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SPARCclassic/SPARCclassic X/SPARCstation LX Service Manual

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1. Power supply Diskette drive Hard drive connector Video SIMM slot data connector data connector Keyboard soft O power on connector SIMM slot 00401 Bank 3 SIMM slot U0302 Bank 2 N SIMM slot U0303 Bank 1 SIMM slot U0402 Bank 3 x SIMM slot U0301 Bank 2 SIMM slot 0304 Bank 1 l SBus slot 0 1 SBus slot 1 NVRAM 7 connector 6 ISDN SCSI terminator Keyboard Aud ae PTC udio power oar Boot PROM mouse PTC 6 j edge connector AUI PTC FIGURE 10 3 Main Logic Board Layout SPARCstation LX System Part 270 2474 Identifying Replaceable System Board Components Before you attempt to replace or install a new SPARCclassic SPARCclassic X SPARCstation LX board or subassembly make sure that you have the right unit 10 5 10 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Visually identify each CRU by looking at the a
2. n FIGURE 7 Serial Connector 7 FIGURE B 8 Parallel Connector 8 FIGURE B 9 13W3 Video Connector B 9 FIGURE 8 10 Audio Ports B 10 FIGURE B 11 Audio Line out Connector B 10 FIGURE B 12 Audio Line in Connector 0 FIGURE 8 13 Internal SCSI Connector B 11 FIGURE 8 14 Diskette Drive Connector B 12 FIGURE B 15 SBus Connector B 13 FIGURE B 16 Power Connector B 14 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Tables NVRAM Parameters Used During POST and Boot Sequence 2 5 Summary of Autoboot and Diagnostic Switch Parameters 5 Diagnostic Tools 7 On Board Diagnostics 2 8 Interpreting the Keyboard Diagnostic LEDs 2 Listing of POST Tests 6 Troubleshooting Tips 4 1 Power Supply Connector Pin Assignments 4 4 Troubleshooting Disk Drive Errors 6 Physical Memory Address Ranges for 4 Mbyte and 16 Mbyte SIMMs 8 Physical Memory Address Ranges for 1 Mbyte and 2 Mbyte SIMMs 4 9 Determining the Defective DSIMM 4 9 Safety Precautions 5 2 535 Mbyte Conner Drive Configuration Jumpers 7 535 Mbyte Seagate Drive Configuration Jumpers 9 1 0 Gbyte Seagate Drive Configuration Jumpers 1 1 0 Gbyte Conner Drive Configuration Jumpers 9 13 Safety Precautions 10 3 Acronyms for Components of the Main Logic Board 10 7 Tables xiii TABLE 2 1 TABLE 2 2 TABLE 2 3 TABLE 2 4
3. O O SCSI terminator External drive External drive External drive SCSI cable optional AC power cable ae 9 H 1 on eA q Monitor AC power cable system unit iS Monitor power cable 13W3 video cable Keyboard cable Keyboard Mouse and cable Thick Ethernet via adapter FQ H Audio input r output jacks ISDN connectors SPARCstation LX Parallel Twisted pair connector Ethernet connector LJ FIGURE 7 4 Reconnecting System Components Chapter 7 Internal Access 7 See the Desktop SPARC Hardware Owner s Guide or Using a SPARCclassic X Terminal for complete details about cabling To turn on power to the system See Section 6 2 Powering On the System on page 6 4 7 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Major Subassemblies This chapter describes how to remove and replace the system unit s major subassemblies Section 8 1 P
4. System Board Test Connect a terminal to serial port A or use a tip connection to another workstation to receive additional POST failure information To set up a tip connection to another workstation see Section 3 4 1 Setting Up a tip Connection to Another Workstation Press and hold the Stop d keys While holding the keys down turn the system power switch on Watch the keyboard LEDs a The Caps Lock key on the keyboard should flash on and off indicating that the system is running the Power On Self Test POST If the Caps Lock key fails to flash on and off after you have pressed and held the Stop d keys POST failed b To further troubleshoot the system board see Section 4 2 2 1 Caps Lock Key Fails to Flash On and Off During POST Observe the keyboard LEDs If a failure occurs during POST an LED may light up TABLE 3 1 in Chapter 3 Power On Self Test POST describes types of problems that occur when an LED on the keyboard lights up Replace the defective part indicated Caps Lock Key Fails to Flash On and Off During POST Remove optional SBus cards and SIMMs Leave a pair of SIMMs in Bank 1 Run POST again before replacing the system board Remove all other parts to eliminate the possibility that parts you removed could cause the POST failure Chapter 4 Troubleshooting Procedures 4 5 A D252 4 2 2 1 Disk Drive Errors TABLE 4 3 presents disk drive error
5. 25 Selected On Board Tests For information about how to run the On Board Diagnostics see Appendix C On Board Diagnostics TABLE 2 4 lists specific on board diagnostic tests for SPARCclassic and SPARCstation LX systems TABLE 2 4 On Board Diagnostics Description and Requirements Tests the floppy drive s ability to respond to commands Requires a formatted diskette in the drive Tests the system video graphics hardware and monitor The diag switch NVRAM parameter must be set to True for the test to run Tests the SCSI logic on the main logic board The diag switch NVRAM parameter must be set to True for the test to run Performs internal and external loopback tests on the AUI thick Ethernet interface A cable must be connected to the system AUI Ethernet port and to an Ethernet tap or the test will fail the external loopback phase Performs internal and external loopback tests on the twisted pair Ethernet TPE interface A cable must be connected to the system TPE port and to a TPE hub or the test will fail the external loopback phase If the tpe link test parameter is False disabled the external loopback test will appear to pass even if a cable is not connected Performs internal and external loopback tests on the auto selected system Ethernet interface A cable must be attached to the system and to an Ethernet tap or hub or the external loopback test will fail Tests internal or external SCSI disks t
6. 7 Disconnect the terminal and reconnect the graphics monitor keyboard and Ethernet connector See the Desktop SPARC Hardware Owner s Guide or Using a SPARCclassic X Terminal for installation instructions 11 4 3 Removing the Main Logic Board This section explains how to remove a faulty main logic board from the system unit 11 24 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Note Removing and replacing the main logic board is a drastic step to take See Section 11 4 2 Before Replacing the Main Logic Board on page 11 21 for troubleshooting information To remove the main logic board Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit detach all peripherals and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the sy
7. 1 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 CHAPTER 2 Troubleshooting Overview This chapter describes the different types of diagnostic firmware and software tools available to you for troubleshooting and explains how they are related and when to use them Section 2 1 Default Boot Mode Section 2 2 Boot PROM Diagnostics Section 2 3 Low Level POST Code Section 2 4 Diagnostic Tools and When to Use Them Section 2 5 Power On Self Test Section 2 6 Selected On Board Tests Section 2 7 Sundiag System Exerciser Section 2 8 Forth Toolkit Section 2 9 SunDiagnostic Executive 21 Default Boot Mode The flowchart in FIGURE 2 1 outlines the roles played by various diagnostics during the default boot mode s operation Note The operating system diagnostic tools as indicated in FIGURE 2 1 do not apply to the SPARCclassic X terminal 2 2 Boot PROM Diagnostics The diagnostics are stored in the Open Boot PROM and include the following 2 1 Power On Self Test On Board Diagnostics The Power On Self Test POST tests the core CPU functionality The progress of testing can be monitored using the keyboard LEDs the video monitor and the system s serial port A If there is system trouble you may want to run the extended On Board Diagnostics to take advantage of more extensive tests including but not limited to Et
8. Each connector is keyed to fit only one way For connector locations see Chapter 11 Main Logic Board and Component Replacement Connect the 12 pin connector from the power supply harness to its mating connector on the main logic board Connect the 3 pin connector from the power supply harness to the keyboard soft power on connector on the main logic board Connect the LED speaker cable to its mating connector on the main logic board Connect the diskette drive and hard disk drive data cables to their connectors at the front of the main logic board Chapter 8 Major Subassemblies 3 a Speaker power LED assembly System I O board Main logic board Main logic board extractor lever Se FIGURE 8 8 Plugging in the Main Logic Board 4 Reinstall any SBus cards if applicable See Section 11 1 2 Replacing SBus Cards on page 11 4 for installation details 5 Refer to Chapter 7 Internal Access to perform the following procedures m Detaching the wrist strap m Closing the system unit m Reconnecting system components 6 Refer to Chapter 6 Power Off and On to turn the power on 8 14 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Storage Devices This chapter includes information about how to replace the system storage drives Section 9 1 Hard Disk Drive Section 9 2 Disk Drive Bracket Section 9 3 Diskette Drive CHAPTER 9 Hard Dis
9. 11 18 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Power supply Keyboard soft Diskette drive Hard drive connector power on data connector data connector a 2 gt 7 4 6 SIMM slot U0401 Bank 3 SIMM slot U0302 Bank 2 a SIMM slot 00303 Bank 1 SIMM slot 00402 Bank 3 Monitor control connector SIMM slot 00301 Bank 2 Ps SIMM slot 20304 Bank 1 used by SBus frame buffer cards E SBus slot 0 SBus slot 1 NVRAM Leo Boot PROM 3 connector AUIPTC Audio power Keyboard I O board SCSI terminator PTC mouse PTC edge connector PTC FIGURE 11 12 Main Logic Board Layout SPARCclassic SPARCclassic X Chapter 11 Main Logic Board and Component Replacement 11 19 Diskette drive Hard drive data connector data connector 3 o SIMM slot U0401 Bank 3 SIMM slot U0302 Bank 2 SIMM slot U0303 Bank 1 SIMM slot U0402 Bank 3 SIMM slot 0301 Ban
10. For example Test memory All of the system main memory will be tested if the system diag switch parameter is True If the diag switch parameter is False this test uses the selftest megs parameter in NVRAM to determine how much memory to test The default for the selftest megs parameter is 1 so only 1 megabyte of memory is tested Appendix C On Board Diagnostics 7 ok probe scsi all iommu f e0000000 sbus f e0001000 dma 1 81000 esp 1 80000 Unit 0 Disk SEAGATE ST41600N SUN1 3G00286965 Copyright c 1991 Seagate All rights reserved iommu f e0000000 sbus f 0001000 espdma f 400000 esp f 800000 Unit 0 Disk SEAGATE ST1480 SUN04245828 Copyright c 1991 Seagate All rights 9 ok probe scsi Target 3 Unit 0 Disk SEAGATE ST1480 SUN04245828 Copyright c 1991 Seagate All rights reserved Target 2 Target 3 reserved C 1 6 To change the amount of memory tested using the selftest megs parameter type this command ok setenv selftest megs 16 This sets the desired memory size to 16 megabytes Any whole number may be used as long as it does not exceed the actual size of memory in megabytes installed in the system When the test memory diagnostic is running the number of megabytes being tested is displayed and counted down to zero during the test See the Open Boot Command Reference for a detailed description and step by step instructions for the available o
11. SIMM slot 00304 Bank 1 i o f FIGURE 4 2 DSIMM Slot Locations TABLE 4 4 Physical Memory Address Ranges for 4 Mbyte and 16 Mbyte SIMMs Physical Memory Address Ranges Bank SIMM 4 Mbyte SIMMs 16 Mbyte SIMMs 1 U0304 0000000 through 07FFFFF 0000000 through 1FFFFFF 1 U0303 0000000 through O07FFFFF 0000000 through 1FFFFFF 2 U0301 2000000 through 27FFFFF 2000000 through 3FFFFFF 2 U0302 2000000 through 27FFFFF 2000000 through 3FFFFFF 3 U0402 4000000 through 47FFFFF 4000000 through 5FFFFFF 3 U0401 4000000 through 47FFFFF 4000000 through 5FFFFFF SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 4 8 TABLE 4 5 Physical Memory Address Ranges for 1 Mbyte and 2 Mbyte SIMMs Physical Memory Address Ranges Bank SIMM 1 Mbyte SIMMs 2 Mbyte SIMMs 1 U0304 0000000 through 01FFFFF 0000000 through 01FFFFF 1 U0303 0000000 through 01FFFFF 0400000 through 05FFFFF 2 U0301 2000000 through 21FFFFF 2000000 through 21FFFFF 2 U0302 2000000 through 21FFFFF 2400000 through 25FFFFF 3 U0402 4000000 through 41FFFFF 4000000 through 41FFFFF 3 U0401 4000000 through 41FFFFF 4400000 through 45FFFFF TABLE 4 6 Determining the Defective DSIMM If the physical address ends in The defective DSIMM is in U0304 110301 or U0402 U0303 110302 or U0401 0 1 2 3 8 9 A or B 4 5 6 7 C D E or F Note Both DSIMMs in a memory bank have the same p
12. 68 MB 2 MB 16 MB 16 MB 2 MB 16 MB 16 MB 72 MB 4 MB 16 MB 16 MB 4 MB 16 MB 16 MB 96 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB TABLE 11 2 Configuration Matrix for Memory Modules Total Slot Slot Slot Slot Slot Slot Memory U0304 U0301 U0402 U0303 U0302 U0401 16 MB 4 MB 4 MB 4 MB 4 MB 24 MB 4 MB 4 MB 4 MB 4 MB 4 MB 4 MB 32 MB 16 MB 16 MB 40 MB 4 MB 16 MB 4 MB 16 MB 48 MB 4 MB 4 MB 16 MB 4 MB 4 MB 16 MB 64 MB 16 MB 16 MB 16 MB 16 MB 72 MB 4 MB 16 MB 16 MB 4 MB 16 MB 16 MB 96 MB 16 MB 16 MB 16 MB 16 MB 16 MB 16 MB Removing a DSIMM The procedure for removing a DSIMM is the same regardless of the type of DSIMM Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the boards Handle boards only by the edges Do not touch the components themselves or any metal parts Always wear a grounding wrist strap when handling the boards Attach the wrist strap to the metal casing of the power supply at the rear of the unit top Chapter 11 Main Logic Board and Component Replacement 11 13 11 3 2 an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to compl
13. B 7 type 13W3 video connecor B 9 POST overview 2 4 power turning off 6 2 6 4 turning on 6 4 power on fails 4 2 power supply external devices 1 7 features 1 7 voltage 1 7 wattage 1 7 powering on the system 6 4 Power On Self Test POST 2 4 3 1 probe scsi 4 6 C 7 probe scsi all C 7 R rear panel cables 7 1 regulatory compliance information A 3 related books xvii replacing CRUs tools needed 5 3 Index 3 L light emitting diode LED 8 4 M main logic board MLB See MLB memory 1 5 address ranges 4 8 configuration 1 5 error reporting 4 7 location U number 4 7 maximum 1 5 physical address 4 7 slot arrangement 4 8 MLB customer replaceable units CRUs 1 4 removing 8 9 11 24 replacing 8 12 11 29 SPARCclassic and X terminal 10 4 SPARCstation LX 10 5 to 10 6 test 4 5 test points 11 18 troubleshooting 11 21 monitor 1 7 mounting bracket exploded view 12 4 N NVRAM nonvolatile random access memory See NVRAM null modem cable 3 5 NVRAM open boot commands 1 6 parameters 2 4 0 On Board Diagnostics 1 on board test disk0 2 8 floppy 2 8 net 2 8 net aui 2 8 net tpe 2 8 screen 2 8 power supply 4 3 test points 11 18 test lt device path gt C 3 test all C 3 C 4 test memory C 7 thick Ethernet C 5 tip 3 5 tip window 3 5 tools needed to replace CRUs 5 3 troubleshooting 2 1 turning off power 6 2 6 4 twisted pair Ethernet TPE C
14. SIMM slot U0303 Bank 1 SIMM slot U0402 Bank 3 d SIMM slot U0301 Bank 2 SIMM slot U0304 Bank 1 SBus slot 0 1 SBus slot 1 NVRAM LED speaker connector Boot PROM ISDN Jumpers AUI PTC SCSI terminator P TC Audio power I O board PTC edge connector Keyboard mouse PTC FIGURE 11 14 Main Logic Board Layout SPARCstation LX Part 270 2474 11 4 2 Before Replacing the Main Logic Board This section explains what steps to perform before removing and replacing the main logic board Chapter 11 Main Logic Board and Component Replacement 1 Note Removing and replacing the main logic board is a drastic step to take Therefore it is important to try to troubleshoot all other possibilities before removing and replacing the main logic board To check for and eliminate other possible problems before you replace the main logic board do the following 1 Preparation a Follow the instructions in Chapter 6 Power Off and On and in Chapter 7 Internal Access about halting your system opening the system unit and attaching a wrist strap The wrist strap should be attached to the metal casing of the power supply inside the system unit b Make sure that the system unit s power is in the Standby position by
15. interfaces 10BaseT also called twisted pair Ethernet or TPE and 10288505 0 called thick Ethernet or AUI Only one on board interface may be connected at a time The system can automatically select which interface is connected and active The AUI port is first tested by transmitting packets and checking for No Carrier or response packets If the AUI test fails the TPE port is then tested Entering watch net causes this automatic selection to take place You may see these messages k watch net Internal loopback test succeeded External loopback test Auto selecting Ethernet cable I F rying AUI AUI Carrier Loss rying TPE Received packet on TPE Select cable TPE succeeded O You may also control the selection of Ethernet interfaces to monitor by using specific commands Use watch tpe to monitor the 10BaseT TPE connection or watch aui to monitor the 10Base5 thicknet connection Appendix C On Board Diagnostics 5 For example k watch tpe Internal loopback test succeeded External loopback test succeeded Looking for Ethernet packets is a good packet X is a bad packet Type any key to stop Q The watch net all command monitors Ethernet packets on any Ethernet interface installed in the system For example if you have an SBus Ethernet card installed in one of the system SBus slots watch net all will start by monitoring Ethernet transmissions dete
16. megabytes The X terminal comes with either 4 or 8 megabytes of DRAM expandable to 96 megabytes Physically DRAM chips are grouped in single in line memory modules DSIMMs that plug into DSIMM slots located on the main logic board of the system unit see FIGURE 10 1 and FIGURE 10 2 The main logic board contains six DSIMM slots capable of accepting either 1 2 4 or 16 megabyte DSIMMs The maximum memory configuration is 96 megabytes using six 16 megabyte DSIMMs You can combine different types of DSIMMs in the same system however you must add DSIMMs in identical pairs That is you can add a pair of 4 megabyte DSIMMs or a pair of 16 megabyte DSIMMs but you can t add a single DSIMM or add one of each type FIGURE 1 4 Typical DSIMM Video SIMM SPARCstation LX systems can accommodate an optional 1 megabyte video SIMM VSIMM The VSIMM plugs into a VSIMM slot on the main logic board and allows SPARCstation LX systems to support the following video display resolutions 1600 x 1280 m 1280 4 1152 900 double buffered SBus Cards You can add various SBus cards to the system s two SBus slots on the main logic board FIGURE 10 1 and FIGURE 10 2 show the location of the SBus slots See the Section 11 1 SBus Cards on page 11 1 for information about how to remove and replace SBus cards Chapter 1 Product Description 5 2 1 1 2 1 2 FIGURE 1 5 Typical SBus Card The following is a sampling
17. 13 N C 38 TermPWR 14 N C 39 N C 15 Ground 40 Ground 16 Ground 41 atn 17 Ground 42 Ground 18 Ground 43 bsy 19 Ground 44 ack 20 Ground 45 rst 21 Ground 46 msg 22 Ground 47 sel B 6 B 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 TABLE 6 Pinout for External SCSI Connector Continued Description cd req Pin Description 23 Ground 24 Ground 25 Ground Note Pin 38 is 5V fused and supplied by a schottkey diode Description B Transmit Data A Transmit Clock DCE source B Receive Data A Receive Clock B Transmit Clock DCE source B Request to Send A Data Terminal Ready N C N C N C A Transmit Clock DTE source B Transmit Clock DTE source Appendix System Connectors B 7 Serial Connector Pin 14 15 16 17 18 19 20 21 22 23 24 25 1300000000000001 2500000000000014 FIGURE B 7 Serial Connector TABLE B 7 Pinout for Serial Connector Pin Description N C A Transmit Data A Receive Data A Request to Send A Clear to Send A Data Set Ready Signal Ground A Carrier Detect N C N C eo ON DBD oO RA Q N m e O B Data Terminal Ready N B Carrier Detect B Clear to Send ray ies B 7 Description AutoFxDt Error Init SlctIn Ground Ground Ground Ground Ground Ground Ground Ground Pin 14 15 16 17 18 19 20 21 22 23 24 25 P
18. 28 29 30 Description eject N C Ground N C Ground N C Ground Index Ground drive select 0 Ground N C Ground FIGURE B 14 Diskette Drive Connector TABLE B 12 Pin eo oo NOAUA FF QO NY Se e e e wo N e O B 13 8 12 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Description Ground hd select Ground disk change Description sb_d 30 sb_siz 1 sb_rd Ground sb_a 1 sb_a 3 sb_a 5 5 VDC sb_a 7 sb_a 9 sb_a 11 Ground sb_pa 13 sb_pa 15 sb_pa 17 System Connectors 3 Pinout for Diskette Drive Connector Continued Pin 31 32 33 34 Description N C Ground motor Ground TABLE B 12 Pin 14 15 16 17 SBus Connector Internal Description Pin sb_clk 73 sb_bg 74 sb_as 75 Ground 76 sb_d 1 77 sb_d 3 78 sb_d 5 79 5 VDC 80 sb_d 7 81 sb_d 9 82 sb_d 11 83 Ground 84 sb_d 13 85 sb_d 15 86 sb_d 17 87 Appendix B Pinout for SBus Connector Pin 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 SS TUUUOOCU000000 000000000000 000000000000000000000 PH ODDUONDD0 000000000000 00000000000000000000000000 FIGURE B 15 SBus Connector Description sb_d 31 sb_siz 0 sb_siz 2 sb_irq7 sb_a 0 sb_a 2 sb_a 4 sb_merr sb_a 6 sb_a 8 sb_a 10 sb_err sb_pa 12 sb_pa 14 sb_pa 16 B 14 TABLE B 13 Description Pin Ground 25 sb_br 26 sb_sel 27 sb_irq1 28 sb_d 0 29 sb_d 2
19. 5 U unit illustration bottom 12 3 top 12 2 V video connectors See connectors video display resolutions 1 5 Video Frame Capture Board 1 6 video output none 4 2 video single in line memory module VSIMM See VSIMM VSIMM installing 11 9 resolutions supported 1 5 WwW watch aui C 4 watch clock C 4 watch net C 4 watch net all C 4 watch tpe C 4 wrist strap attaching 7 4 detaching 7 4 requirements environmental A 2 input power A 1 S safety precautions table 10 3 SBus boards 1 5 cards 1 5 options 1 6 printer board 1 6 slots 1 5 SCSI disconnecting cable 7 1 factory address setting 9 4 ID jumper location 9 4 verifying a defective controller 4 6 serial cable 3 5 speaker replacing 8 4 8 6 specifications physical A 3 SunDiagnostic Executive 2 10 system abnormal response 6 3 closing 7 4 differences 1 2 front panel 1 1 I O board removing replacing 8 12 opening 7 2 rear panel 1 1 subassembly access 7 1 system components 1 1 system I O board location 8 7 removing 8 7 system overviews SPARCclassic 1 1 SPARCclassic X 1 1 SPARCstation LX 1 1 system power supply location 8 1 T test C 3 MLB 4 5 Index 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993
20. Antistatic Mat ISDN Enabling Kit FD a A Q N Disk Drive Bracket Shoulder Screw TABLE 12 3 Part Number List Related Hardware Documentation Item Description 1 Desktop Storage Pack Installation amp Operation Manual Desktop Storage Module Installation amp User s Guide Desktop SPARC Hardware Owner s Guide Desktop SPARC Hardware Product Notes 2 3 4 5 Sundiag User s Guide 6 Sundiag User s Guide Addendum for SMCC Hardware 7 Open Boot Command Reference 8 Open Boot Command Summary 9 SPARCstation LX Hardware Setup Instructions 10 SPARCclassic Hardware Setup Instructions 11 SPARCclassic X Terminal Hardware Setup Instructions Chapter 12 Illustrated Parts Breakdown TABLE 12 3 Part Number List Related Hardware Documentation Continued Item Description Sun Part No 12 SPARCclassic X Upgrade Guide 801 4721 13 Installing SPARCclassic SPARCclassic X SPARCstation LX SIMMs 801 2211 14 Sun ISDN BRI SBIH Hardware Configuration Guide 800 6863 12 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 APPENDIX A System Specifications This appendix contains system specifications including input power requirements environmental requirements physical specifications and regulatory compliance information All specifications are applicable to both SPARCclassic and SPARCstation LX systems Not all specifications will be applicable to the SPARCclassic X terminal which does n
21. DSIMMs and VSIMMs in these systems xvii Desktop Storage Pack Installation amp Operation Manual explains how to install a Desktop Backup Pack Desktop Disk Pack or Desktop SunCD Pack Desktop Storage Module Installation amp User s Guide explains how to install and daisy chain Desktop Storage Modules SunDiagnostic Executive User s Guide for SPARCstations explains how to run extensive configurable tests that are independent of the operating system you use The SunDiagnostic Executive is the tool of choice when you need thorough diagnostics With the SunDiagnostic Executive you can determine which customer replaceable unit needs to be replaced Sun ISDN BRI SBI Hardware Configuration Guide explains about configuring ISDN jumpers Notes Cautions and Warnings to this equipment Unqualified personnel who tamper with this equipment may be N Caution Improper handling by unqualified personnel can cause serious damage held liable for any resultant damage to the equipment Individuals who remove any outer panels to access this equipment must observe all safety precautions and ensure compliance with skill level requirements certification and all applicable local and national laws Procedures contained in this document must be performed by qualified Field Service trained maintenance providers Note Before you begin carefully read each of the procedures in this manual If you have not performed sim
22. EN Remote spin up I ft wol Factory default FIGURE 9 4 Jumper Settings for 424 Mbyte Drive 9 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 AO 1 0 or 1 when jumpered SCSI device A1 E2 2 when jumpered address jumpers A2 E3 4 when jumpered Serial port jumpers SCSI address 3 not jumpered E1 and E2 jumpered SCSI power 2 terminator E5 jumpered Power connector SCSI power terminator E6 not jumpered Data connector FIGURE 9 5 Jumper Settings for Conner 535 Mbyte Drive TABLE 9 1 describes the 535 megabyte Conner drive s factory jumper settings TABLE 9 1 535 Mbyte Conner Drive Configuration Jumpers Pin Pair Description Factory Set E1 SCSI ID address Yes E2 SCSI ID address Yes E3 SCSI ID address No Chapter 9 Storage Devices 9 7 TABLE 9 1 535 Mbyte Conner Drive Configuration Jumpers Continued Pin Pair Description Factory Set E4 Wait spin disabled No E5 Disk power termination Yes E6 SCSI bus power termination No Motor enabled ME jumpered Parity disabled PE jumpered Manufacturing header pins Power connector Data connector FIGURE 9 6 Jumper Settings for Seagate 535 Mbyte Drive 9 8 SPARCclassic SPARCclassic X SPARCstation LX Servic
23. Enter n at the gt prompt to enter the Forth Toolkit The On Board Diagnostics reside in the boot PROM Sundiag System Exerciser Runs under the operating system It displays real time use of the system resources and peripherals The Sundiag System Exerciser tells you if your system is functioning correctly If Sundiag fails run the Power On Self Test If all power on self tests pass then run the SunDiagnostic Executive to identify the problem See the Sundiag User s Guide for more information This test is not applicable to the SPARCclassic X terminal Forth Toolkit Allows input to the system at the boot PROM level Supports functions such as changing NVRAM parameters resetting the system running diagnostic tests displaying system information and redirecting input and output See the Open Boot Command Reference for more information SunDiagnostic Executive Runs extensive configurable subsystem tests that are independent of the operating system Run the SunDiagnostic Executive if all tests pass when you run the POST Running the SunDiagnostic Executive allows you to determine which customer replaceable unit needs to be replaced See the latest version of SunDiagnostic Executive User s Guide for the SPARCstations for more information This test is not applicable to the SPARCclassic X terminal Chapter 2 Troubleshooting Overview 7 Power On Self Test For more information about the POST see Chapter 3 Power On Self Test POST
24. In Connector FIGURE B 12 Audio Line in Connector B 11 B 11 1 B 11 2 8 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 This connector is used to connect external sound sources such as a compact disc player or cassette tape player to the system B 12 SCSI Connector Internal 1 66 25 50 coco 0000 1000 FIGURE 8 13 Internal SCSI Connector TABLE B 11 Pinout for Internal SCSI Connector Pin Description Pin Description 1 Ground 26 5 VDC 2 sd0 27 N C 3 Ground 28 N C 4 sd1 29 Ground 5 Ground 30 Ground 6 sd2 31 Ground 7 Ground 32 atn 8 sd3 33 Ground 9 Ground 34 N C 10 sd4 35 Ground 11 Ground 36 bsy 12 sd5 37 Ground 13 Ground 38 ack 14 sd6 39 Ground 15 Ground 40 rst 16 sd7 41 Ground 17 Ground 42 msg 18 sdp 43 Ground 19 Ground 44 sel 20 Ground 45 Ground Appendix System Connectors 1 Pinout for Internal SCSI Connector Continued Description cd Ground reg Ground io Pin 46 47 48 49 50 Description Ground Ground N C N C N C TABLE B 11 Pin 21 22 23 24 25 Diskette Drive Connector Internal Description direction Ground step Ground write data Ground write gate Ground track 0 Ground write protect Ground read data 3 1 OO OO 4 2 33 000000 QO00000000000000 Pinout for Diskette Drive Connector Pin 18 19 20 21 22 23 24 25 26 27
25. Section C 1 4 Watch net Watch aui Watch tpe and Watch net all Section C 1 5 Probe scsi Probe scsi all Section C 1 6 Test memory Section C 2 Returning to the Monitor Prompt You have access to a number of additional tests in the boot PROM called On Board Diagnostics To invoke these tests you must enter the Forth Toolkit Caution To run the On Board Diagnostics you must halt the system in an orderly manner When the operating system or any other standalone program has already booted do not press Stop a to halt the system Abruptly aborting program execution may cause damage to data files C 1 Running the On Board Diagnostics 1 Save all your work and quit all applications Consult your software documentation for instructions on ending a work session and saving your files C 1 2 Return to the operating system environment If you are in a windowing environment exit from it and wait for the operating system prompt to appear See the documentation supplied with your windowing system 3 Halt the operating system See the documentation supplied with your operating system for instructions on how to halt it For example if you are using the Solaris 2 x operating system a At the system prompt type su and press Return b Type your superuser password and press Return 4 To inform other system users of your intentions and to then halt the system use Step c 5 To halt the system imm
26. TABLE 3 1 TABLE 3 2 TABLE 4 1 TABLE 4 2 TABLE 4 3 TABLE 4 4 TABLE 4 5 TABLE 4 6 TABLE 5 1 TABLE 9 1 TABLE 9 2 TABLE 9 3 TABLE 9 4 TABLE 10 1 TABLE 10 2 TABLE 11 1 Memory Configuration Matrix SPARCclassic X Terminal 11 12 TABLE 11 2 Configuration Matrix for Memory Modules 11 13 TABLE 11 3 SPARCstation LX ISDN Jumper Settings 4 TABLE 12 1 Part Number List Customer Replaceable Units 12 5 TABLE 12 2 Part Number List Miscellaneous Items 7 TABLE 12 3 Part Number List Related Hardware Documentation 12 7 TABLE A 1 Input Power Requirements and Power Dissipation A 1 TABLE A 2 Environmental Requirements 2 TABLE A 3 Physical Specifications A 3 TABLE A 4 Regulatory Compliance Information A 3 TABLE B 1 Pinout for Attachment Unit Interface AUI Connector 2 TABLE B 2 Pinout for Twisted Pair Ethernet Connector B 3 TABLE B 3 Pinout for ISDN Terminal Endpoint Connector B 3 TABLE B 4 Pinout for ISDN Network Termination Connector 4 TABLE B 5 Pinout for Keyboard Mouse Connector 5 TABLE B 6 Pinout for External SCSI Connector 6 TABLE B 7 Pinout for Serial Connector 7 TABLE B 8 Pinout for Parallel Connector B 8 TABLE B 9 Pinout for 13W3 Video Connector 9 TABLE B 10 Audio Ports B 10 TABLE B 11 Pinout for Internal SCSI Connector B 11 TABLE B 12 Pinout for Diskette Drive Connector B 12 TABLE B 13 Pinout for SBus Connector B 13 TABLE B 14 Pinout for Power Connector B 14 xiv SPARCclassic SPARCclassic
27. a part restarting the system is relatively simple Reconnect the cables See Section 7 5 Reconnecting the External Cables on page 7 7 6 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 2 Turn the power in this sequence 1 External drive units if any starting with the unit that is furthest electrically from the system unit 2 Monitor if you turned it off 3 Desktop SPARCstation system unit 3 Boot the operating system The operating system may start to boot automatically or you may need to enter a command at the system prompt What you do next depends on the operating system software you are using Consult the documentation supplied with your operating system for instructions on booting and logging in to your system Chapter6 Power OffandOn 6 5 6 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 CHAPTER 7 Internal Access This chapter describes how to access the subassemblies inside the system unit and how to close the system unit after you have finished Section 7 1 Disconnecting the External Cables Section 7 2 Opening the System Unit Section 7 3 Attaching the Wrist Strap Section 7 4 Closing the System Unit Section 7 5 Reconnecting the External Cables Disconnecting the External Cables Detach all cables connected to the rear of the system unit Take care to remember where each cable attache
28. conditions and corrective actions TABLE 4 3 Troubleshooting Disk Drive Errors Symptom Corrective Action Read write or parity error Replace the disk drive indicated by the failure reported by the operating system message The operating system identifies the internal or applications disk drive 0 SCSI target ID 3 as sd0 and internal disk drive 1 SCSI target ID 1 88 1 Drive fails to boot or does not SCSI controller may be defective See Section 4 3 1 respond to commands Verifying the Built In SCSI Controller If SCSI controller is OK the SCSI ID jumpers or configuration jumpers may be set incorrectly Refer to Chapter 9 Storage Devices Slow disk drive response If many SCSI devices are connected to the same SCSI bus and if some of these devices such as the 1 05 Gbyte disk drive are fast SCSI devices you may want to install an FSBE S SCSI host adapter card to the fast SCSI devices and put these fast SCSI devices on a separate SCSI bus to speed up disk drive response Verifying the Built In SCSI Controller To check whether the built in SCSI controller is defective test the drive response to the probe scsi command To test additional SCSI host adapters added to the system use the probe scsi all command Refer to Section C 1 5 Probe scsi Probe scsi all on page C 7 At the ok prompt type probe scsi See the following example ok probe scsi Target 1 Unit 0 Disk
29. documentation supplied with your operating system for instructions on how to halt it For example if you are using the Solaris 2 x operating system 1 At the system prompt type su and press Return 2 Type your superuser password and press Return 3 Type usr sbin init 0 and press Return Chapter6 Power OffandOn 6 3 6 1 2 For example to halt the system immediately type nevada su Password welcome Password does not appear on screen nevada usr sbin init 0 After halting the operating system wait for either the gt or ok prompt The system displays system halt messages followed by either the gt or ok prompt When either prompt appears you can safely turn off the power in the proper sequence Turn off the power to the system components in this order a External drive units if you have any b System unit c Monitor Powering On the System Caution Before turning on power to your system be sure to close the system unit It is not safe to operate your SPARCstation while the system unit is open Caution These devices are equipped with a 3 wire grounded power cord To reduce the risk of electrical shock always plug the power cord into a properly grounded power outlet Caution Always allow 10 seconds between turning off the power and turning it back on again This pause prevents possible damage to power supply components in your system unit After turning off the power to replace
30. enable Yes WP Write protect No PE Parity enable Yes Chapter 9 Storage Devices 9 11 TABLE 9 3 1 0 Gbyte Seagate Drive Configuration Jumpers Continued Abbreviation Description Factory Set TE Termination enable No TP Termination power No from drive TP Termination power No to SCSI bus SCSI ID device AO E1 0 or 1 when jumpered address jumpers___ 1 2 2 when jumpered SCSI ID address 3 A2 E3 4 when jumpered EO and E1 jumpered Motor Enable E5 jumpered Serial port pins Power connector Data connector SCSI power terminator E8 not jumpered FIGURE 9 9 Jumper Settings for Connor 1 0 Gbyte Drive 9 12 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 TABLE 9 4 describes the 1 0 gigabyte Connor drive s factory jumper settings TABLE 9 4 1 0 Gbyte Conner Drive Configuration Jumpers Pin Pair Description Factory Set E1 SCSI ID address Yes E2 SCSI ID address Yes E3 SCSI ID address No E4 Reserved No E5 Motor enable Yes E6 Delay spin No E7 Disable parity No E8 SCSI bus power No termination Installing a Hard Disk Drive To install a hard disk Refer to FIGURE 9 10 Determine which type of disk drive mounting bracket you have a If the disk drive bracket does not have grommets continue with Step 3 b If the disk drive bracket has grommets skip Step 3 and move on to Step 4 For a drive bracket without grommets partially insert th
31. have a self test program Tests are executed in order using the device tree viewed with the show devs command as reference Disks tapes and CD ROMs are not tested by test all Watch clock This test reads a register in the NVRAM TOD Nonvolatile RAM Time of Day chip on the main logic board and displays the result as a seconds counter The counter should count from 0 to 59 repeatedly until you interrupt it by pressing any key on the keyboard The following screen gives you an example of a watch clock test 2 C 1 3 ok watch clock seconds register of the real time clock chip ticking once a second Watching the It should be Type any key to stop 41 Watch net Watch aui Watch tpe and Watch net all These tests monitor broadcast Ethernet packets on the Ethernet cable s connected to the system Good packets received by the system are indicated by a period displayed on the screen Errors are indicated with an X and the error description C 1 4 6 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 For example ok watch net Internal loopback test succeeded External loopback test Auto selecting Ethernet cable I F Trying AUI Received packet on AUI Select cable AUI succeeded Looking for Ethernet packets is a good packet is a bad packet Type any key to stop SPARCclassic and SPARCstation LX systems have two types of on board Ethernet
32. is not a handle Pulling on the SBus card retainer can cause it to break Place the SBus card on an antistatic mat A 11 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 SBus card retainer Lift card at front corners Do not use plastic SBus card retainer as a handle FIGURE 11 1 Removing the SBus Card Replace the SBus slot filler panel if necessary If you will not be installing a replacement SBus card install the filler panel before closing the system unit FIGURE 11 2 Failure to do so can cause cooling problems inside the system unit N SBus slot filler panels Vi le 6 6 e 2 E oO 50o p eeen o he FIGURE 11 2 SBus Slot Filler Panels Chapter 11 Main Logic Board and Component Replacement 11 3 Replacing SBus Cards Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling t
33. lift easily be sure that it has cleared the hooks 8 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 EV FIGURE 8 1 Removing and Replacing the Power Supply 8 1 2 Replacing the Power Supply To install a new power supply 1 Remove the faulty power supply as described in the previous section 2 Install the new power supply 1 Align the holes in the bottom of the power supply with the hooks in the system unit top see FIGURE 8 1 2 Lower the power supply into the unit top as shown 3 Properly position the power supply by pushing it firmly toward the rear of the unit about 0 25 inch until it engages with the hooks 3 Reattach the wrist strap to the metal casing of the new power supply Chapter 8 Major Subassemblies 8 3 Connect the AC power cord between the system unit and an AC wall outlet to provide the ground path for the wrist strap Reinstall the disk drive mounting bracket Reinstall the disk drive mounting bracket in front of the power supply For detailed instructions see Section 9 2 2 Replacing the Disk Drive Mounting Bracket on page 9 19 Be sure to reconnect the power supply wiring harness to the diskette drive hard disk drive and main logic board Connect the 12 pin and 3 pin connectors from the wiring harness to the power connector and keyboard soft power on connector on the main logic board Connect the 4 pin connectors fr
34. mode However it may be easier to understand the failure message output when it is accompanied by more detailed POST progress messages available via the ttya serial port An example of a POST failure message output over the ttya serial port is shown below FAILURE NVRAM 52000003 Battery Failure Exp 00000000 Obs 0000000a Chapter 3 Power On Self Test POST 3 Normal Mode Under Normal mode when the system is turned on control is sent to the Open Boot PROM Depending on the options set in the Open Boot PROM for example if autoboot is enabled set to true the operating system will load Diagnostic testing is not run oe Full Diagnostic Mode Diagnostic mode is the mode which tests the major hardware system board components and if the POST is successful probes the installed SBus modules Diagnostic mode runs if one of these conditions is met m You press and hold the Stop d keys while you turn the on the power m You set the diag switch NVRAM parameter to true in the Open Boot PROM You disconnect the keyboard and you set the diag switch NVRAM parameter to true in the Open Boot PROM Note POST does not perform extensive testing on any system board component POST detects only major failures To view error messages returned by POST connect a terminal to serial port A or use a tip connection to another workstation If you do not connect a terminal to serial port A or use a tip connection
35. of the SBus cards available for SPARCclassic and SPARCstation LX systems Note that this is not an all inclusive list GX Graphics Accelerator Card This card controls the video output from the system unit and accelerates the generation of graphic images The GX Graphics Accelerator card occupies one SBus slot on the main logic board On the SPARCclassic X terminal the card is supported as a factory installed option but not as an add on board Color Frame Buffer Card This card occupies one SBus slot This card controls the video output from the system unit to a color monitor Second Ethernet Card This card provides you with an extra Ethernet port The Ethernet card is used in applications in which your SPARCstation acts as a gateway between two physically distinct Ethernet networks This card has two connectors standard thick Ethernet and twisted pair Ethernet It occupies one SBus slot Video Frame Capture Card This card occupies one SBus slot This card takes video input and displays it on color or monochrome monitors SBus Printer Card This card occupies one SBus slot This card connects the system to printing plotting and scanning devices Nonvolatile RAM NVRAM The NVRAM chip on the main logic board contains the time of day clock and the nonvolatile RAM FIGURE 10 1 and The nonvolatile RAM stores the default system configuration parameters These parameters define how the system is configured at the lowe
36. other system component the AC power cord should remain connected and poses no safety hazard Caution When the system power switch is in the Standb position and the AC Speaker power LED assembly UNIT BOTTOM Main logic board extractor lever Se FIGURE 8 3 System I O Board and Unit Bottom 2 Place an antistatic mat shiny side down next to the system unit 3 Remove any SBus cards installed in the system unit See Section 11 1 SBus Cards on page 11 1 for removal procedures 8 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 4 Disconnect all cables attached to the main logic board For connector locations choose the appropriate board illustration in Chapter 11 Main Logic Board and Component Replacement 1 Disconnect the 12 pin power supply cable from its mating connector by squeezing the clip at the end of the cable and pulling straight up 2 Disconnect the keyboard soft power on cable from its connector next to the 12 pin power supply connector 3 Disconnect the LED speaker cable from its mating connector on the main logic board 4 Disconnect the diskette drive and hard disk drive data cables from their connectors at the front of the main logic board 5 Remove the main logic board 1 Pull the main logic board extractor lever toward the front of the system unit to disconnect the main logic board from the system I O board see FIGURE 8 4 2 Rais
37. outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Place the antistatic mat shiny side up next to the system unit The mat is supplied with the replacement SBus card Detach any external cables connected to the faulty SBus card if applicable Detach any internal cables leading from the SBus card to the main logic board if applicable Detach the cables from their connectors on the main logic board Remove the faulty SBus card Place your index fingers or thumbs beneath the corners of the SBus card where it plugs into its slot Lift up the card to release it from the slot see FIGURE 11 1 Caution The plastic SBus card retainer
38. step 3 d d At the gt prompt type n and press Return When the ok prompt appears you have entered the Forth Toolkit Chapter 11 Main Logic Board and Component Replacement 3 6 Use the commands shown below to set the diagnostic switch to True set the autoboot switch to False and reset the system ok setenv diag switch true ok setenv auto boot false ok reset As the POSTs run view the results on the terminal screen f If all POSTs pass go to step 5 Otherwise proceed as follows i If the Limited Main Memory Address Test fails the U number of the faulty DSIMM is displayed on the terminal Replace the defective DSIMM using Section 11 3 DRAM Single In line Memory Modules DSIMMs on page 11 10 ii If any other POST fails or the system appears dead replace the main logic board The appropriate removal replacement procedures in Section 11 1 SBus Cards g If you replaced the main logic board or a DSIMM return to step 3 of this procedure 4 If you still have not identified the problem go to the next step Otherwise skip ahead to step 7 5 Run the SunDiagnostic Executive with the cache disabled The SunDiagnostic Executive is an independent operating system It runs exhaustive subsystem tests independent of your system s normal operating system See the SunDiagnostic Executive User s Guide for Desktop SPARCstations 6 At the gt or ok prompt turn off the system s power switch
39. test memory test iommu sbus ledma 1 test net test floppy test floppy disk drive test net test net device specifier is an alias test scsi test scsi device specifier is an alias watch clock show ticks of real time clock watch net monitor broadcast packets using auto selected interface watch aui R monitor broadcast packets using AUI interface watch tpe monitor broadcast packets using TPE interface watch net all probe scsi monitor broadcast packets on all net interfaces show attached SCSI devices probe scsi all show attached SCSI devices for all host adapters test all xecute test for all devices with selftest method test memory test all memory if diag switch is true otherwise test memory specified by selftest megs CLl Test lt alias name gt Test lt device path gt The test command combined with a device alias or device path name will execute that device self test program If a device has no self test program this message will be displayed No selftest method for lt device name gt To run the self test program for a device type the test command followed by the device alias or device path name An example is shown below ok test floppy Testing floppy disk system A formatted disk should be in the driv Test succeeded Appendix C On Board Diagnostics 3 Test all The test all command tests all devices in the system that
40. the components themselves or any metal parts Always wear a grounding wrist strap when handling the boards Attach the wrist strap to the metal casing of the power supply at the rear of the unit top Removing the System I O Board To remove the system I O board Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit detach all peripherals and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running Chapter 8 Major Subassemblies 7 8 3 8 3 1 power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any
41. the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard To replace a DSIMM Identify and remove the faulty DSIMM See Section 11 3 2 Removing a DSIMM on page 11 13 Make sure you use the wrist strap and antistatic mat For any DSIMM you remove be sure to note its original slot Remove the replacement DSIMM from its protective packaging and place it on the antistatic mat Determine where to install the new DSIMM and any others you may have removed The replacement DSIMM should go where the faulty DSIMM was located Any other DSIMMs you removed should go in the slots where they were originally installed Note The six DSIMM slots are logically grouped into pairs labeled 1 2 and 3 When installing DSIMMs you must make sure that each pair of DSIMM slots is identically configured For more information see the discussion of paired DSIMMs in Section 11 3 DRAM Single In line Memory Modules DSIMMs Install the DSIMMs Since the DSIMMs are closely spaced they must be installed in the proper order Start with the slot closest to the center of the main logic board and work outward toward the board s front edge Hold each DSIMM at its edges and insert it into the plastic guides at an angle about 30 degrees from the vertical position see FIGURE 11
42. the screen will be blank during the POST Diagnostic mode In this case use the keyboard LEDs to display error conditions See Section 3 7 Status Lights LEDs and Indicators 3 3 Abbreviated Diagnostic Mode A brief Power On Self Test POST is run if you disconnect the keyboard and you set the diag switch NVRAM parameter to false in the Open Boot PROM The brief Power On Self Test is silent no progressive test messages are printed out If an error or errors occur during the abbreviated Power On Self Test all error messages are displayed on the TTY or tip window 3 4 3 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Setting Up a tip Connection to Another Workstation You can use the serial port on your SPARCstation to connect to another Sun workstation either the same type of SPARC system or a different type of Sun workstation or server system This connection lets you use a shell window on the Sun workstation as a terminal to the SPARCstation 10 being tested The tip method is recommended because it lets you use SunOS windowing and operating system features to help you work with the boot PROM To make a tip connection follow these steps Connect the system s serial port ttya to another Sun workstation ttya serial port using a serial connection cable This connection is made with a 3 wire null modem cable Connect wires 3 2 2 3 and 7 7 At the other Sun workstation add
43. when the system is operating normally FIGURE 3 3 shows the location of the system LED Chapter 4 Troubleshooting Procedures shows flow diagrams of actions to take when the system LED is not lit Diskette drive optional System power LED FIGURE 3 3 System Power LED on Front of System This section describes the keyboard LED sequences displayed at power up when POST fails If a failure occurs in POST the keyboard displays a specific LED pattern See FIGURE 3 4 and TABLE 3 1 During normal system operation the LEDs should not be interpreted as diagnostic error indicators Following the system initialization the operating system boots automatically unless the NVRAM configuration options specify not to do so Note The Caps Lock key LED located just above the left hand Shift key is not used as a power on test failure indicator but flashes on and off while POST is running 3 7 3 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Scroll Lock Num Lock LED LED Caps Lock LED Caps Lock Compose UNIX keyboard U S keyboard LED FIGURE 3 4 Arrangement of the Type 5 Keyboard LEDs If the Caps Lock key fails to flash on and off after you have pressed and held the Stop d keys when you power on the system POST failed See Section 4 2 2 System Board Test for tr
44. when you turn on the system power Power on does not succeed The system fails to initialize but the LEDs on the keyboard light and there is a tone from the keyboard 4 1 1 Check that the power cord is connected to the monitor and to the wall outlet 2 Verify that the wall outlet is supplying AC power to the monitor Use a Volt Ohmmeter VOM 3 Verify that the video cable connection is secure between the monitor and the system video output port Use a VOM to perform the continuity test on the video cable If the power cord and video cable connection are good and there is still no video output reseat the video card for the monitor 4 If the monitor power supply is internally fused check the fuse The fuse could be blown Power On Does Not Succeed 4 2 1 Turn off the system power switch 4 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Check that the system power cord is properly connected to the system rear panel power receptacle and to the wall outlet Verify with a VOM that the wall outlet is supplying AC power to the system Turn the system power switch on and observe the keyboard The LEDs on the keyboard should briefly light You should hear a tone from the keyboard If you hear no tone or see no lights on the keyboard the system s power supply may be defective See Section 4 2 1 Power Supply Test If you hear a tone and see lights on the k
45. 1 6 Monitors Keyboard and Mouse Each system uses a keyboard an optical mouse and one of the following types of video monitors 15 inch color monitor 381 mm 16 inch mid range color monitor 407 mm 16 inch premium color monitor 407 mm 19 inch grayscale monitor 483 mm 19 inch color monitor 483 mm Chapter 1 Product Description 7 1 2 The main logic board has a built in frame buffer that controls video output from the system unit and can drive either color or grayscale monitors External Storage Devices You can add expansion storage devices to increase the mass storage capacity of the SPARCclassic and SPARCstation LX systems The following are some of the external storage devices available m Desktop Backup Pack 150 Mbytes tape drive only Desktop Disk Pack 207 Mbytes hard disk drive only Desktop Disk Pack 424 Mbytes hard disk drive only Desktop SunCD Pack compact disc drive m Desktop Storage Module 1 3 Gbytes hard disk drive only Desktop Storage Module 2 3 Gbytes tape drive only Desktop Storage Module 5 0 Gbytes tape drive only See the external storage device installation guide that comes with the device for installation procedures and for information about daisy chaining external drive units External storage devices are not available for the SPARCclassic X terminal 1 3 System Interconnections FIGURE 1 6 illustrates how to connect the basic components of the SPARCc
46. 11 Then by pushing gently on its top edge rotate the DSIMM into an upright position You should hear it click into place SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 a 11 16 Note Each DSIMM is keyed so it can only be installed in one way 2 Notched corner ay JE ensures proper ARA JE insertion 6 WANN Jed be ele SGAE gi FIGURE 11 11 Installing a DSIMM 5 Refer to Chapter 7 internal Access to perform the following procedures m Detaching the wrist strap m Closing the system unit m Reconnecting system components 6 Refer to Chapter 6 Power Off and On to turn the power on Caution When you are finished installing parts inside the system unit be sure to close the system unit before turning on the power It is not safe to operate the system unit while it is open See Section 7 4 Closing the System Unit on page 7 4 for instructions 114 Main Logic Board This section explains how to remove and replace the main logic board MLB Chapter 11 Main Logic Board and Component Replacement 7 Main Logic Board Voltage Test Points There are no voltage test points on the main logic board If you need to measure voltages the safest place is at the power supply connection on the main logic board see FIGURE 11 12 and FIGURE 11 13 See Section 11 4 2 Before Replacing the Main Logic Board on page 11 21 for
47. 1398 35 U S Type 5 Keyboard 320 1072 36 U S UNIX Type 5 Keyboard 320 1073 37 French Type 5 Keyboard 320 1074 38 Danish Type 5 Keyboard 320 1075 39 German Type 5 Keyboard 320 1076 40 Italian Type 5 Keyboard 320 1077 41 Holland Dutch Type 5 Keyboard 320 1078 42 Norwegian Type 5 Keyboard 320 1079 43 Portuguese Type 5 Keyboard 320 1080 44 Spanish Type 5 Keyboard 320 1081 45 Swedish French Type 5 Keyboard 320 1082 46 Swiss French Type 5 Keyboard 320 1083 47 Swiss German Type 5 Keyboard 320 1084 48 U K Type 5 Keyboard 320 1085 49 Korean Type 5 Keyboard 320 1086 50 Taiwan Type 5 Keyboard 320 1087 51 Nihon Go Type 5 Keyboard 320 1088 52 Finnish Type 5 Keyboard 320 1089 53 19 Grayscale Monitor 365 1154 54 15 SVGA Monitor 365 1286 55 16 Mid range Color Monitor 365 1151 12 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 12 7 Sun Part No 365 1159 365 1167 540 2220 Sun Part No 250 1007 330 1455 330 1458 250 1088 330 1145 595 2459 240 2145 Sun Part No 800 6316 800 7235 801 2175 801 2179 801 5319 801 5497 800 6076 800 5675 801 2177 801 2210 801 4250 TABLE 12 1 Part Number List Customer Replaceable Units Continued Item Description 56 16 Premium Color Monitor 57 19 Color Monitor 58 Speaker Box TABLE 12 2 Part Number List Miscellaneous Items Item Description 1 Wrist Strap Vertical Stand side piece Vertical Stand base piece Antistatic Mat with Sun Logo Disposable
48. 30 sb_d 4 31 sb_irq2 32 sb_d 6 33 sb_d 8 34 sb_d 10 35 sb_irq3 36 sb_d 12 37 sb_d 14 38 sb_d 16 39 Pin eo oo NAAU FEF OO NY SE e Se Se Se e ao F W N e QO Description 5 VDC sb_pa 19 sb_pa 21 sb_pa 23 Ground sb_pa 25 sb_pa 27 sb_reset 12 VDC TABLE B 13 Pinout for SBus Connector Continued Description Pin Description Pin Description Pin sb_irq4 40 sb_ack8 64 5 VDC 88 sb_d 19 41 sb_pa 18 65 sb_d 18 89 sb_d 21 42 sb_pa 20 66 sb_d 20 90 sb_d 23 43 sb_pa 22 67 sb_d 22 91 sb_irq5 44 sb_ack32 68 Ground 92 sb_d 25 45 sb_pa 24 69 sb_d 24 93 sb_d 27 46 sb_pa 26 70 sb_d 26 94 sb_d 29 47 N C 71 sb_d 28 95 sb_irq6 48 12 VDC 72 5 VDC 96 Pin 16 17 18 19 20 21 22 23 24 Power Connector Internal FIGURE 8 16 Power Connector TABLE B 14 Pinout for Power Connector Pin Description Pin Description 1 5 Vdc 7 5 Vdc 2 5 Vde 8 5 Vdc 3 Ground 9 Ground 4 Ground 10 Ground 5 12 Vdc 11 12 Vdc 6 POK 12 12 Vde SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 B 15 B 14 APPENDIX 6 On Board Diagnostics This appendix explains On Board Diagnostic tests The following topics and tests are described Section C 1 Running the On Board Diagnostics Section C 1 1 Test lt alias name gt Test lt device path gt Section C 1 2 Test all Section C 1 3 Watch clock
49. 4 for installation details 8 Refer to Chapter 7 Internal Access to perform the following procedures 11 30 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Detaching the wrist strap m Closing the system unit m Reconnecting system components 9 Refer to Chapter 6 Power Off and On to turn the power on Nonvolatile RAM NVRAM This section describes the removal and replacement procedures for the NVRAM chip If you replace the main logic board you must transfer the NVRAM chip from the faulty board to the replacement board Caution The NVRAM chip is a delicate electronic component that is extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the NVRAM Always wear a grounding strap when handling the NVRAM Removing the NVRAM To remove the NVRAM Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit detach all peripherals and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Insid
50. 501 2061 525 1203 525 1343 530 1643 530 1678 530 1870 530 1793 TABLE 12 1 Part Number List Customer Replaceable Units Description 207 Mbyte Internal Disk Drive 424 Mbyte Internal Disk Drive 535 Mbyte Internal Disk 1 0 Gbyte Internal Disk Drive Tri density Floppy Drive 70 Watt Power Supply System I O Board Internal Speaker Power LED Assembly Main Logic Board 0 Mbyte SPARCclassic Main Logic Board 0 Mbyte SPARCstation LX Main Logic Board 4 Mbyte SPARCclassic X Main Logic Board 8 Mbyte SPARCclassic X Upgrade SPARCclassic X 4 Mbyte to Classic 16 Mbyte Upgrade SPARCclassic X 8 Mbyte to Classic 16 Mbyte 1 Mbyte DSIMM Module 2 Mbyte DSIMM Module 4 Mbyte DSIMM Module 16 Mbyte DSIMM Module 1 Mbyte VSIMM Module NVRAM TOD NVRAM TOD SPARCclassic X Diskette Drive Data Cable Internal Hard Drive Data Cable Internal 13W3 Video Cable SCSI II Cable Chapter 12 Illustrated Parts Breakdown Item eo oo NOAA FF WO NY N N N N N N HB BBP Be BP BP eB me nae n ao A Wo N e O O0 N DTD oO A WO N KF O TABLE 12 1 Part Number List Customer Replaceable Units Continued Item Description Sun Part No 26 AUI Audio Adapter Cable 530 1856 27 AUI Adapter Cable 530 2021 28 Serial Interface Y Cable 530 1869 29 SunMicrophone 370 1414 30 ISDN Cable 4 0 m 530 1871 31 Twisted Pair Ethernet Cable 530 1871 32 Keyboard Cable 530 1442 33 Type 4 Mouse Type 4 Pad 365 1059 34 Type 5 Mouse Type 5 Pad 370
51. 7 Diagnostic Executive 2 10 diagnostics boot PROM 2 1 default boot mode 2 1 defective CRUs 2 10 firmware 2 1 on board C 1 SBus device probe 2 4 software 2 1 software and SPARCclassic X terminal 2 1 tools overview 2 2 tools summary 2 7 disk drive See hard disk drive diskette drive 1 7 9 21 density 1 7 diskette types 1 7 removing 9 22 replacing 9 23 display resolutions 1 5 DRAM 1 5 DRAM dynamic random access memory See DRAM drive diskette See diskette drive hard See hard disk drive DSIMM 11 11 installing 11 16 locating faulty 4 7 maximum memory 1 5 removing 11 14 dynamic random access memory DRAM See DRAM dynamic single in line memory module DSIMM See DSIMM E Electrical Static Discharge ESD See ESD mat environmental requirements A 2 error hard disk drive 4 6 read write or parity 4 2 4 6 ESD mat 5 4 Ethernet board 1 6 external devices 1 1 Index 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 scsi 8 tape0 2 9 ttya 2 9 ttyb 2 9 opening system unit 7 2 operating system halting 6 3 options 1 7 P part numbers listing 12 4 related documentation 12 7 physical specifications A 3 pin assignment B 1 audio ports B 9 board power supply connector 4 4 diskette drive connector B 12 parallel connector B 8 power supply internal B 14 SBus connector internal B 13 SCSI external B 6 SCSI internal B 11 serial
52. ARCclassic X SPARCstation LX DSIMMs and VSIMMs 11 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Removing the VSIMM Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the boards Handle boards only by the nonconducting edges Do not touch the components themselves or any metal parts Always wear a grounding wrist strap when handling the boards Attach the wrist strap to the metal casing of the power supply at the rear of the unit top To remove the VSIMM from the system unit Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should no
53. Bus Card 11 6 VSIMM Slot Location 11 8 Removing the VSIMM_ 11 9 Installing the VSIMM 11 10 Typical DSIMM 11 11 DSIMM Slot Locations 11 12 Removing a DSIMM 11 15 Installing a DSIMM 11 17 Main Logic Board Layout SPARCclassic SPARCclassic X 11 19 Main Logic Board Layout SPARCstation LX Part 270 2233 11 20 Main Logic Board Layout SPARCstation LX Part 270 2474 11 21 Extracting the Main Logic Board 11 27 Raising the Speaker LED Assembly 11 27 Removing and Replacing the Main Logic Board 11 28 Plugging in the Main Logic Board 11 30 Locating the NVRAM 11 32 Removing the NVRAM 11 32 Default SPARCstation LX ISDN Jumper Settings 11 33 Exploded View of the Unit Top 12 2 Exploded View of the Unit Bottom 12 3 Exploded View of the Disk Drive Mounting Bracket 12 4 Attachment Unit Interface AUI Connector B 2 Twisted Pair Ethernet Connector 3 ISDN Terminal Endpoint Connector 3 ISDN Network Termination Connector 4 Keyboard Mouse Connector B 5 External SCSI Connector 6 Figures xi GURE 11 3 GURE 11 4 GURE 11 5 GURE 11 6 GURE 11 7 GURE 11 8 GURE 11 9 GURE 11 10 GURE 11 11 GURE 11 12 GURE 11 13 GURE 11 14 GURE 11 15 GURE 11 16 GURE 11 17 GURE 11 18 GURE 11 19 GURE 11 20 GURE 11 21 GURE 12 1 GURE 12 2 GURE 12 3 GURE B 1 GURE B 2 GURE B 3 GURE B 4 GURE B 5 GURE B 6 n
54. C Test FPU SP Overflow CEXC Test FPU SP Divide by 0O CEXC Test 3 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 3 7 Power On Self Test POST Chapter 3 TABLE 3 2 Listing of POST Tests Continued U SP Inexact CEXC Test U SP Trap Priority gt Test U SP Trap Priority lt Test U DP Invalid CEXC Test U DP Overflow CEXC Test U DP Divide by 0 CEXC Test U DP Inexact CEXC Test U DP Trap Priority gt Test U DP Trap Priority lt Test FP FP FP FP FP FP FP FP FP PROCO Interrupt Regs Tests ft Interrupts OFF Test ft Interrupts ON Test So So PROCO User Timer Test PROCO Counter Timer Test DMA2 E_CSR Register Test LANCE Address Port Tests LANCE Data Port Tests 22 D_CSR Register Test 22 D_ADDR Register Test A2 D_BCNT Register Test 22 D_NADDR Register Test P Registers Tests A2 P_CSR Register Test A2 P_LADDR Register Test A2 P_BCNT Register Test ORT Registers Tests D D D D PP NVRAM Access Test TOD Registers Test POST Error Messages The POST error messages returned to the terminal are self explanatory For example if no DSIMM is installed in the system POST will tell you that no DSIMM is installed and the slot number of the SIMM slot Use the error messages returned by POST to troubleshoot the system 3 6 Status Lights LEDs and Indicators The LED at the front of the chassis lights up
55. Cstation LX Service Manual November 1993 NVRAM TOD Keyboard soft power on cable Main logic power cable Diskette drive data cable Hard drive data cable Internal speaker and X power LED assembly L A qi Ut Z 2 A we Main logic board 2 extractor lever UNIT BOTTOM FIGURE 12 2 Exploded View of the Unit Bottom Chapter 12 Illustrated Parts Breakdown 12 3 Screw holes Drive select switch Va hidden from view Diskette drive power cable Diskette drive data cable Screw holes Diskette drive Cable management guides Captive screw No FIGURE 12 3 Exploded View of the Disk Drive Mounting Bracket rive mounting bracket 12 2 Replacement Part List TABLE 12 1 provides the part numbers for customer replaceable units TABLE 12 2 provides part numbers for miscellaneous items and TABLE 12 3 part numbers for related documentation 12 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 12 5 Note Although the part numbers are correct as of the publication date of this document they are subject to change Consult your authorized Sun sales representative or service provider to confirm part numbers before you order new or replacement parts Sun Part No 370 1417 370 1392 370 1424 370 1546 370 1419 300 1101 501 2269 540 2233 501 2262 501 2474 501 2079 501 2313 556 1774 556 1775 501 2289 501 2433 501 1991 501 2059
56. E 11 17 Avoid handling any of the delicate electronic components or touching any of the circuit board traces b Tilt the board to avoid the speaker assembly and lower it onto the floor of the system unit c Align the board s edge connector with its mating connector on the system I O board d Push the main logic board extractor lever toward the rear of the system unit to plug the main logic board into the system I O board see FIGURE 11 18 e Lower the speaker assembly back to its original position Chapter 11 Main Logic Board and Component Replacement 11 29 11 4 4 Speaker power LED assembly System I O board Main logic board Main logic board NE extractor lever FIGURE 11 18 Plugging in the Main Logic Board 6 Reconnect all cables that attach to the main logic board Each connector is keyed to fit one way only For connector locations see FIGURE 11 12 and FIGURE 11 13 a Connect the 12 pin connector from the power supply harness to its mating connector on the main logic board b Connect the 3 pin connector from the power supply harness to the keyboard soft power on connector on the main logic board c Connect the LED speaker cable to its mating connector on the main logic board d Connect the diskette drive and hard disk drive data cables to their connectors at the front of the main logic board 7 Reinstall any SBus cards if applicable See Section 11 1 2 Replacing SBus Cards on page 11
57. M 3 SPARCstation LX ISDN Jumper Settings 11 33 11 5 11 6 Illustrated Parts Breakdown 12 1 Illustrations of Selected CRUs 12 1 Replacement Part List 4 System Specifications A 1 Input Power Requirements A 1 Environmental Requirements A 2 Physical Specifications A 3 Regulatory Compliance A 3 System Connectors 1 Attachment Unit Interface AUI Connector 2 Twisted Pair Ethernet Connector 3 ISDN Terminal Endpoint Connector 3 ISDN Network Termination Connector 4 Keyboard Mouse Connector B 5 SCSI Connector External B 6 Serial Connector B 7 Parallel Connector 8 13W3 Video Connector 9 Audio Ports and Audio Module 9 B 10 1 Audio Ports B 9 Signals for the Audio Ports B 10 B 11 1 Audio Line Out Connector 0 B 11 2 Audio Line In Connector 0 SCSI Connector Internal 1 Contents vii 12 1 12 2 A l A 2 A 3 AA B 1 B 2 B 3 B 4 B 5 B 6 B 7 B 8 B 9 B 10 B 11 B 12 12 9 13 Diskette Drive Connector Internal B 12 8 14 SBus Connector Internal B 13 B 15 Power Connector Internal B 14 C On Board Diagnostics C 1 C 1 Running the On Board Diagnostics 1 C 1 1 Test lt alias name gt Test lt device path gt C 3 C 1 2 Test all C 4 6 1 3 Watch clock 4 C 1 4 Watch net Watch aui Watch tpe and Watch net all 4 C 1 5 Probe scsi Probe scsi all 27 6 1 6 Test memory C 7 6 2 Returning to the Monitor Prompt C 8 Glossary Glossary 1 SPARCclassic SPARCclassic X SPARCstation LX Service Manual N
58. SEAGATE 511480 SUN0424 Copyright c 1991 Target 3 Unit 0 Disk SEAGATE 511480 SUN0424 Copyright c 1991 4 3 4 3 1 4 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 a If the disk drive responds and a message is displayed the system SCSI controller has successfully probed the devices This indicates that the system board is working correctly b If a disk doesn t respond i Verify that the SCSI target ID is set correctly Make sure that every SCSI disk and other SCSI device on the SCSI bus has a different SCSI target ID ii Verify that all SCSI cables and the SCSI terminator are connected securely iii Check the SCSI cables to make sure there are no bent pins iv If you have not found the problem after checking the previous causes replace the unresponsive drive v If the problem still occurs after replacing the drive replace the system board vi If replacing the disk drive and the system board does not correct the problem replace the internal disk drive cable assembly Determining Faulty DSIMM Locations The Sundiag System Exerciser SunDiagnostic Executive and POST diagnostics can report memory errors encountered during program execution For general information about diagnostics see Chapter 2 Troubleshooting Overview Memory error messages on the video monitor usually indicate a physical memory address where the error was detected Depending on the diag
59. SPARCclassic SPARCclassic X SPARCstation LX Service Manual Sun microsystems THE NETWORK IS THE COMPUTER Sun Microsystems Computer Company A Sun Microsystems Inc Business 901 San Antonio Road Palo Alto CA 94303 4900 USA 650 960 1300 fax 650 969 9131 Part No 801 2176 13 Revision A November 1993 Send comments about this document to docfeedback sun com 1997 Sun Microsystems Inc 901 San Antonio Road Palo Alto California 94303 4900 U S A All rights reserved This product or document is protected by copyright and distributed under licenses restricting its use copying distribution and decompilation No part of this product or document may be reproduced in any form by any means without prior written authorization of Sun and its licensors if any Portions of this product may be derived from the UNIX system licensed from Novell Inc and from the Berkeley 4 3 BSD system licensed from the University of California UNIX is a registered trademark in the United States and in other countries and is exclusively licensed by X Open Company Ltd Third party software including font technology in this product is protected by copyright and licensed from Sun s suppliers RESTRICTED RIGHTS Use duplication or disclosure by the U S Government is subject to restrictions of FAR 52 227 14 g 2 6 87 and FAR 52 227 19 6 87 or DFAR 252 227 7015 b 6 95 and DFAR 227 7202 3 a Sun Sun Microsystems the Sun logo and So
60. X SPARCstation LX Service Manual November 1993 Preface The SPARCclassic SPARCclassic X SPARCstation LX Service Manual describes how to Identify system problems by running diagnostic programs Remove and replace customer replaceable units CRUs This book is written for Sun Field Service representatives original equipment manufacturers OEMs value added resellers VARs and other customers with self maintenance contracts Document Organization This book is divided into seven parts A table at the beginning of each part lists the chapters sections and their page numbers Part 1 System Information describes an overview of the SPARCclassic SPARCclassic X SPARCstation product line s standard features and its external options Part 2 Troubleshooting provides a troubleshooting overview explains how to run the Power On Self Test POST and other system diagnostics and gives troubleshooting procedures for some frequently encountered problems Part 3 Preparing for Service explains safety requirements the symbols used in this book the tools required for replacing customer replaceable units and how to shut down power off and power on the system Part 4 Subassembly Removal and Replacement describes how to open and close the system attach and remove a wrist strap and remove and replace subassemblies Part 5 System Board provides an overview of the system board and describes
61. abib i UNIT TOP 7 0 FIGURE 10 4 View of Open System Unit 10 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 CHAPTER 1 1 Main Logic Board and Component Replacement This chapter describes procedures for removing and replacing the main logic board and its components In addition the default SPARCstation LX ISDN jumper settings are also described Section 11 1 SBus Cards Section 11 2 Video SIMM VSIMM Section 11 3 DRAM Single In line Memory Modules DSIMMs Section 11 4 Main Logic Board Section 11 5 Nonvolatile RAM NVRAM Section 11 6 SPARCstation LX ISDN Jumper Settings 11 1 SBus Cards This section describes the procedures for removing and replacing a faulty SBus card If you are adding a new SBus card and not replacing one refer instead to the Desktop SPARC Hardware Owner s Guide and the documentation supplied with the new card 11 1 1 Removing SBus Cards To remove an SBus card from the system unit 11 1 1 Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap Caution The AC power cord should remain attached between the system unit and an AC wall
62. able from its connector next to the 12 pin power supply connector c Disconnect the LED speaker cable from its mating connector on the main logic board d Disconnect the diskette drive data cable if present and the hard disk drive data cable from their connectors at the front of the main logic board Remove the NVRAM chip See Section 11 5 Nonvolatile RAM NVRAM on page 11 31 for details Place the NVRAM chip on the antistatic mat Save the chip for installation on the replacement main logic board Remove the main logic board a Pull the MLB main logic board extractor lever toward the front of the system unit to disconnect the main logic board from the system I O board see FIGURE 11 15 b Raise the speaker assembly to allow removal of the main logic board see FIGURE 11 16 c Grasp the board by the SBus connectors with both hands Tilt the board slightly to avoid the speaker assembly and lift it up and out of the system unit see FIGURE 11 17 Avoid handling any of the delicate electronic components or touching any of the circuit board traces d Place the main logic board on an antistatic mat SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 11 26 Speaker power LED assembly System I O board Main logic board Main logic board WN extractor lever FIGURE 11 15 Extracting the Main Logic Board QO Squeeze the two levers at the base of the assembly and slide t
63. and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Caution The SIMMs installed in your system must be specifically designed to operate in it Do not transfer a SIMM from a different Sun system unless you are sure it is compatible with your system To replace the VSIMM on the main logic board Chapter 11 Main Logic Board and Component Replacement 11 9 11 2 2 1 Remove the faulty VSIMM See Section 11 2 1 Removing the VSIMM on page 11 7 Make sure you use the wrist strap and antistatic mat 2 Install the new VSIMM The VSIMM is keyed so it can be installed only in one way Grasp the VSIMM by its top corners and align it with its connector see FIGURE 11 7 Applying equal pressure to both corners push down the VSIMM until it is firmly seated in its connector 3 Refer to Chapter 7 Internal Access to perform the following procedures m Detaching the wrist strap Closing the system unit m Reconnecting system components 4 Refer to Chapter 6 Power Off and On to turn the power on Notched corner ensu
64. ata cable Detach the data cable from the diskette drive and set it aside for use with the replacement drive 9 22 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 This completes the diskette drive removal process Replacing the Diskette Drive To replace the diskette drive Remove the defective diskette drive as instructed in the preceding section On the replacement drive verify the proper setting of the drive select switch Make sure the switch position matches that of the defective drive See FIGURE 9 16 for the switch location Connect the data cable to the replacement drive see FIGURE 9 16 Use the end of the cable that has no pull tab The connector is keyed so it will fit only one way Install the diskette drive see FIGURE 9 16 a Slide the diskette drive and attached cable into the cavity in the disk drive mounting bracket Make sure the drive s printed circuit board is facing up b Thread the data cable through the opening on top of the drive mounting bracket c Align the four screw holes in the mounting bracket with the holes in the diskette drive insert the screws and fasten the diskette drive securely in the bracket Replace the disk drive mounting bracket in the unit top See Section 9 2 2 Replacing the Disk Drive Mounting Bracket on page 9 19 Chapter9 Storage Devices 9 23 7 9 24 SPARCclassic SPARCclassic X SPARCstation LX Service Manual Novemb
65. ation LX systems Dynamic Random Access Memory DRAM Single In line Memory Module A small printed circuit card that contains dynamic random access memory DRAM chips External Storage Module An external unit that contains disk and or tape drive s that can be connected to a Desktop SPARCstation A high level programming language A major feature of Forth is that user defined operators can be used as if they are primitives An interactive command interpreter based on the Forth programming language While in the Toolkit you will see the ok prompt The Toolkit gives you access to an extensive set of functions for performing fault isolation and debugging A printed circuit board that can be installed in an SBus slot of the system unit that controls a video display Identification Input Output For example an input output device Integer Unit SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Desktop Storage Module Desktop Storage Pack DSP Desktop SunCD Pack Diagnostic Executive disk disk drive diskette diskette drive DRAM DSIMM ESM Forth Forth Toolkit frame buffer board ID IU Glossary 2 Light Emitting Diode Indicated by the gt prompt From the gt prompt you can boot the system continue the execution of a halted program or enter the Forth Toolkit If disaster befalls your operating system the monitor automatically starts A video displa
66. ay cause personal injury if touched Caution The system board and related modules and cards have surface mount components which may break when the board is flexed To minimize the amount of board flexing observe the following precautions Hold the system board only by the edges Do not place the system board on a hard surface Use a cushioned antistatic mat See Chapter 12 Illustrated Parts Breakdown for the part number Transport the board in an antistatic bag Protect yourself and the equipment by observing the safety precautions described in TABLE 10 1 TABLE 10 1 Safety Precautions Problem Precaution ESD Electrostatic discharge Make sure that the power cord connects the system to a grounded electrical outlet The power cord provides a ground path for the system unit Electric shock Make sure that the system power switch is in the standby position before opening the system for service ESD ESD Wear a wrist strap when handling printed circuit boards Use the antistatic mat see Chapter 12 Illustrated Parts Breakdown when working on a printed circuit board In addition to providing ESD protection the mat also cushions the board to prevent breakage of parts mounted on the bottom of the board ESD Handle a printed circuit board by the edges only Store a board in an antistatic bag Replace the cover to keep out foreign objects and to prevent overheating Install filler panels in all u
67. ay the following system UNIX Bourne and Korn shell prompt SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 UNIX C shell prompt UNIX Bourne and Korn shell prompt x 6 TABLE P 1 Typographic Conventions Continued Typeface or Symbol Meaning Example E 8 TE Superuser prompt all shells Superuser prompt all shells Mouse buttons are referred to in this way SELECT Mouse ADJUST Buttons MENU Related Books The following books provide additional information and are occasionally referenced in this manual m Open Boot Command Summary provides quick reference information about the various functions of the Open Boot PROM m Open Boot Command Reference provides information about advanced functions of the Open Boot PROM a Sundiag User s Guide covers information about Sundiag a system exerciser that runs under the SunOS operating system Sundiag displays real time use of system resources and peripherals a Sundiag User s Guide Addendum for SMCC Hardware covers Sundiag topics that are specific to SPARCstation systems m Desktop SPARC Hardware Owner s Guide provides step by step instructions on how to install the system s hardware and software Using a SPARCCclassic X Terminal contains instructions on how to install the SPARCclassic X hardware Installing SPARCCclassic SPARCclassic X SPARCstation LX SIMMs provides step by step information on how to install
68. cted by that card When you interrupt the test on that interface by pressing any key watch net all then goes on to test the next Ethernet interface it finds in the system For example k watch net all iommu f e0000000 sbus f e0001000 lebuffer 1 40000 le 1 60000 Internal loopback test succeeded External loopback test succeeded Looking for Ethernet packets is a good packet X is a bad packet Type any key to stop O iommu f e0000000 sbus f e0001000 ledma f 400010 le f c00000 Internal loopback test succeeded External loopback test succeeded Looking for Ethernet packets is a good packet X is a bad packet Type any key to stop 6 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Probe scsi Probe scsi all The probe scsi test sends an inquiry command to internal and external SCSI devices connected to the system s on board SCSI This test is not applicable to the SPARCclassic X terminal If a SCSI device is connected and powered up the target address unit number device type and manufacturer name should be displayed For example The probe scsi all test sends an inquiry command to all SCSI devices on all the SCSI host adapters installed in the system The first identifier listed in the display is the SCSI host adapter address in the system device tree followed by the SCSI device identification data
69. d by harmful electrical charges if you do not wear a wrist strap Parts that require the use of a wrist strap are packed with one Chapter 7 Internal Access 3 6 To attach a wrist strap 1 Wrap the grounding strap twice around your wrist Make sure the adhesive side is against your skin 2 Attach the end with the adhesive copper strip to the metal casing of the power supply in the top of the system unit Attach end to metal case of power supply Wrap the wrist strap twice around your wrist adhesive against your skin FIGURE 7 2 Attaching the Wrist Strap To detach a wrist strap 1 Unwrap the grounding strap from your wrist 2 Detach the end with the adhesive copper strip from the metal casing of the power supply in the top of the system unit 7 4 Closing the System Unit To close the system unit 1 Preparation a Check that there are no loose tools or screws in the unit b Check that all SBus cards and SIMMs are seated properly c Check that all internal cable connections are tight 7 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 d Check that the power supply wiring is tucked inside the system to avoid pinching the wiring when you close the system unit Detach and remove the wrist strap Grasp the unit top near the power supply see FIGURE 7 3 Rotate the
70. dures m Detaching the wrist strap m Closing the system unit 9 20 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Reconnecting system components 6 Refer to Chapter 6 Power Off and On to turn the power on Diskette Drive The diskette drive is in the unit top at the front right side see FIGURE 9 12 A 34 pin data cable and a 4 pin power cable connect to the rear of the drive Four Phillips head screws attach the diskette drive to the mounting bracket The drive and the mounting bracket described previously are secured to the chassis by a single captive Phillips head screw at the center rear of the bracket See FIGURE 9 14 and FIGURE 9 16 Caution The hard disk drive and diskette drive contain electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the components Do not touch the components themselves or any metal parts Always wear a grounding strap when handling these drives Attach the strap to your wrist and to the metal casing of the power supply Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Cau
71. e 2 10 main board 1 4 replacement 10 1 replacement part numbers 12 4 tools for replacing 5 3 D devices external 1 1 external storage options 1 8 Index 1 Index SYMBOLS etc remote 3 5 A access to subassemblies 7 1 attachment unit interface AUI See AUI audio ports connector B 9 AUI C 5 autoboot switch 2 5 B board power supply connector 4 4 pin assignment 4 4 test 4 3 boot failure 4 1 boot PROM diagnostics 2 1 C cables external connections 1 3 internal connections 1 4 1 8 10 4 null modem 3 5 removing external 7 1 serial 3 5 central processing unit CPU board See MLB See CPU board closing system unit 7 4 F Forth Toolkit 2 7 frame buffer board 1 6 G graphics I O devices 1 7 grounding strap 7 4 GX graphics accelerator board 1 6 H halting operating system 6 3 hard disk drive 1 7 9 1 207 Mbyte jumper settings 9 4 424 MB 9 10 424 Mbyte jumper settings 9 6 boot failure 4 1 Conner 535 Mbyte jumper settings 9 7 error 4 6 fails to boot 4 6 mounting bracket exploded view 12 4 replacing bracket 9 19 Seagate 1 0 Gbyte jumper settings 9 11 Seagate 535 Mbyte jumper settings 9 8 hung system 6 3 halting 6 3 l input power requirements A 1 Input Output I O board See system I O board J jumper settings hard disk drive verifying 9 4 SCSI settings 9 3 K keyboard LED 3 8 internal 1 4 10 4 diskette drive 1 7 hard disk drive 1
72. e Manual November 1993 9 9 TABLE 9 2 describes the 535 megabyte Seagate drive s factory jumper settings Factory Set Storage Devices 535 Mbyte Seagate Drive Configuration Jumpers Description Reserved Motor start delay Motor start is enabled at unit s start command Write protect disabled Parity disabled Reserved Drive does not supply power termination to itself Drive does not supply power termination to the SCSI bus Chapter 9 TABLE 9 2 Abbreviation RS DS ME WP PE SS TP TP MO 6 0 SCSI ID 0 jumpers T connector Power connector 5 A2 SCSI device address AO Power and data connectors FIGURE 9 7 Jumper Settings for 1 0 Gbyte Drive Part 370 1546 9 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Drive configuration jumpers Motor enable ME jumpered Parity enable PE jumpered Manufacturing header pins not used SCSI ID jumpers SCSI address set to 3 AO and A1 jumpered connector connector FIGURE 9 8 Jumper Settings for Seagate 1 0 Gbyte Drive TABLE 9 3 describes the 1 0 gigabyte Seagate drive s factory jumper settings TABLE 9 3 1 0 Gbyte Seagate Drive Configuration Jumpers Abbreviation Description Factory Set SS Reserved No DS Delayed start No ME Motor
73. e System I O Board 8 12 Storage Devices 9 1 9 1 Hard Disk Drive 9 1 9 1 1 Removing a Hard Disk Drive 9 2 9 1 2 Preparing a Hard Drive for Installation 9 3 9 1 2 1 Verifying the Jumper Settings 9 4 Contents v 9 1 3 Installing a Hard Disk Drive 3 9 2 Disk Drive Bracket 5 9 2 1 Removing the Disk Drive Mounting Bracket 6 9 2 2 Replacing the Disk Drive Mounting Bracket 9 19 9 3 Diskette Drive 1 9 3 1 Removing the Diskette Drive 2 9 3 2 Replacing the Diskette Drive 9 23 10 System Board Overview 10 1 10 1 Before You Begin 1 10 2 Damage Prevention 2 10 3 Handling System Boards and Assemblies 10 2 10 4 Main Logic Board Layouts 4 10 5 Identifying Replaceable System Board Components 10 6 11 Main Logic Board and Component Replacement 11 1 11 1 SBus Cards 11 1 11 1 1 Removing SBus Cards 1 11 1 2 Replacing SBus Cards 4 11 2 Video SIMM VSIMM 11 6 11 2 1 Removing the VSIMM 11 7 11 2 2 Replacing the VSIMM 11 9 11 3 DRAM Single In line Memory Modules DSIMMs 11 10 11 3 1 DSIMM Configurations 1 11 3 2 Removing a DSIMM 11 13 11 3 3 Replacing a DSIMM 11 15 11 4 Main Logic Board 11 17 11 4 1 Main Logic Board Voltage Test Points 11 18 11 4 2 Before Replacing the Main Logic Board 11 21 11 4 3 Removing the Main Logic Board 11 24 11 4 4 Installing the New Main Logic Board 9 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Nonvolatile RAM NVRAM 11 31 11 5 1 Removing the NVRAM 1 11 5 2 Replacing the NVRA
74. e standard mounting screws into the drive screw holes Use the holes that are closest to the corners of the drive Now skip ahead to Step 5 If the drive bracket has grommets insert a shoulder screw into each grommet leaving enough clearance for the drive to be lowered into the bracket Lower the hard drive into the bracket and tighten the four screws Note The drive may not sit perfectly flat until it is completely fastened Chapter9 Storage Devices 9 13 9 1 3 Keyboard soft ae power on cable Hard drive power cable Main logic power cable Cable Pull tab management guides d Hard drive data cable Data cable connector Power supply Hard disk drive Disk drive screw holes Disk drive mounting bracket UNIT TOP US ae ad lt a aw Ry If the mounting bracket has a If the mounting bracket has no grommets follow step 3 SS grommets follow step 4 Shoulder screw FIGURE 9 10 Installing a Hard Disk Drive 6 Attach the hard drive data cable to the data cable connector on the disk drive The location of the data connector on the disk drive is shown in FIGURE 9 10 The data cable connector is keyed to fit only one way Caution Carefully align the connector pins with the socket to avoid damaging the pins Do not force the connection 9 14 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 7 Locate the disk drive power cab
75. e system Verify that SCSI ID jumpers are set correctly and that every disk drive on the SCSI bus is set to a different SCSI address Verify that the configuration jumpers on the disk drive are set correctly See Chapter 9 Storage Devices Verify that the power cord is connected Use a Volt Ohmmeter VOM to check voltages See Section 4 1 No Video Output on the System Monitor Problem LED on front of system is not lit Disk drive fails to boot or does not respond Operating system does not recognize disk drive at boot up No video output on monitor Troubleshooting Tips Continued Action If many SCSI devices are connected to the same SCSI bus and if some of these devices are fast SCSI devices you can install an FSBE S SBus card to the fast SCSI devices to speed up performance Replace the disk drive indicated by the failure message The operating system identifies the internal disk drive 0 SCSI target ID 3 as 580 and internal disk drive 1 SCSI target ID 1 88 1 The power supply may be defective See Section 4 2 1 Power Supply Test The system board may be defective See Section 4 2 2 System Board Test No Video Output on the System Monitor TABLE 4 1 Problem Slow disk drive response Read write or parity error reported by the operating system or applications Power on does not succeed LEDs on keyboard do not light and there is no tone from the keyboard
76. e the speaker assembly to allow removal of the main logic board see FIGURE 8 5 3 Grasp the board by the SBus connectors with both hands Tilt the board slightly to avoid the speaker assembly and lift it up and out of the system unit see FIGURE 8 6 Avoid handling any of the delicate electronic components or touching any of the circuit board traces 4 Place the main logic board on an antistatic mat Chapter 8 Major Subassemblies 9 Speaker power LED assembly System I O board Main logic board at the base of the assembly and slide the assembly up FIGURE 8 5 Raising the Speaker LED Assembly 8 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Main logic board System I O board Speaker power LED assembly UNIT BOTTOM Main logic board extractor lever FIGURE 8 6 Removing and Replacing the Main Logic Board 6 Remove the system I O board 1 On the SPARCclassic X terminal pull the plastic connector covers off the inactive ports to gain access to the screws Chapter 8 Major Subassemblies 1 2 Use a small flat blade screwdriver to remove the 10 screws that secure the system I O board to the system unit chassis see FIGURE 8 7 Take care to remember where each screw belongs 3 Pull the system I O board away from the back panel to remove it Ss ns 0 Pe gt Remove screws 10 p
77. e the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply Chapter 11 Main Logic Board and Component Replacement 1 11 5 11 5 1 under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard 2 Locate the NVRAM chip carrier on the main logic board See FIGURE 11 19 3 Hold the NVRAM chip carrier on both ends and lift the chip straight up Gently wiggle the carrier as necessary see FIGURE 11 20 4 Place it on the antistatic mat FIGURE 11 19 Locating the NVRAM FIGURE 11 20 Removing the NVRAM 11 32 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Replacing the NVRAM To install the NVRAM on the main logic board Hold the NVRAM chip on both sides of the carrier Carefully align the pins and inse
78. e wrist strap which must be attached Electrostatic Wear a wrist strap when handling printed circuit boards drives Discharge ESD or other components such as SIMMs ESD An approved antistatic mat provides protection from static damage when used with a wrist strap The mat also cushions and protects small parts that are attached to printed circuit boards Chapter 12 Illustrated Parts Breakdown lists the part number of the mat ESD Handle a printed circuit board by the edges only Store a board in an antistatic bag System damage and Replace the cover after performing service on the system overheating System damage and Install filler panels in all unused SBus slots Openings on the overheating back of system board reduces the cooling capability of the system Item AC power cord Wrist strap ESD mat Printed circuit boards Cover SBus slot filler panels Symbols The following symbols mean Caution This equipment contains lethal voltages Accidental contact can result in serious injury or death Caution Physical danger due to a non electrical hazard or danger of irreversible damage to data or to the operating system 5 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Caution Improper handling by unqualified personnel can cause serious damage to this equipment Unqualified personnel who tamper with this equipment may be held liable for any resulting damage to t
79. ediately continue with Step d a Type usr sbin shutdown 5 and press Return The example above uses 5 minutes for a warning period to other system users Use appropriately chosen switch settings to inform other system users of your intentions see shut down 1 Continue with Step 4 b Type usr sbin init 0 and press Return For example to halt the system immediately type nevada su Password welcome Password does not appear on screen nevada usr sbin init 0 See the documentation supplied with your operating system for instructions on how to halt it The system synchronizes the file systems and brings you to either the gt or ok prompt If you see the ok prompt skip ahead to step 5 otherwise continue with step 4 6 Enter n at the gt prompt to get to the ok prompt 7 Enter reset at the ok prompt 8 When you see the system banner press Stop a to access the Forth Toolkit 9 Enter help diag at the ok prompt to get a list of tests that comprise the On Board Diagnostics 10 Enter the name of the test you wish to execute 6 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 The following example shows a list of On Board Diagnostic tests Note There are no SCSI device or floppy disk drive tests for the SPARCclassic X terminal ok help diag Category Diag diagnostic routines test device specifier run selftest method for specified devic Examples test memory
80. elow are either not available or are inactive and are consequently covered by connector covers Diskette drive slot SCSI port Audio port Parallel port Internally the SPARCclassic X terminal differs from the basic SPARCclassic system by the absence of the disk drive and diskette drive The annotations to FIGURE 1 2 and FIGURE 1 3 indicate the differences among the SPARCclassic system the SPARCstation LX system and the SPARCclassic X terminal 1 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 1 3 System unit AC power receptacle ia power switch SBus card connector openings ISDN network termination port ISDN terminal endpoint port Twisted pair Ethernet port TP amp gt AUI Audio port vB 6 OG 6 as Parallel port Lock block Courtesy AC power outlet SCSI port Note Shaded items on SPARCstation LX only Chapter 1 Product Description as Serial Audio ports A B input ang jac Audio 13W3 video ort monitor Inactive and covered on the SPARCclassic X terminal FIGURE 1 2 Rear Panel of the System Unit Keyboard port a SBus card system option SBus slots VSIMM
81. eplace the speaker power LED assembly Remove the faulty speaker power LED assembly as described in the previous section Squeeze the replacement speaker assembly where indicated in FIGURE 8 2 and slide it down into its channel guides until it snaps into place Caution Do not touch or press on the speaker cone You may damage the speaker or the sound quality Reconnect the speaker LED cable to its connector on the main logic board The connector is keyed to fit only one way For the connector location see Chapter 11 Main Logic Board and Component Replacement Refer to Chapter 7 Internal Access to perform the following procedures m Detaching the wrist strap m Closing the system unit 8 2 2 AN 8 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Reconnecting system components 5 Refer to Chapter 6 Power Off and On to turn the power on System I O Board The system I O board is located in the bottom half of the system unit see FIGURE 8 3 It provides all of the system s I O connectors through cutouts in the unit s rear panel The main logic board plugs into the system I O board Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the boards Handle boards only by the non conducting edges Do not touch
82. eplaceable Unit An external unit containing a tape drive that can be connected to a Desktop SPARCstation An external unit containing a disk drive that can be connected to a Desktop SPARCstation Glossary 1 AUI address board boot boot PROM boot PROM diagnostics cables cache card CPU CRU Desktop Backup Pack Desktop Disk Pack An external data storage that contains a disk drive or a tape drive A generic name for an external unit containing a tape drive a disk drive or a CD ROM drive that can be connected to a Desktop SPARCstation The external unit containing the tape drive is referred to as the Desktop Backup Pack The external unit containing a disk drive is specifically referred to as the Desktop Disk Pack The external unit containing a compact disc drive is specifically referred to as the Desktop SunCD Pack An external unit containing a compact disc drive See SunDiagnostic Executive A round platter or set of platters coated with magnetic medium and organized into concentric tracks for storing data The mechanism that rotates a disk A removable disk of magnetic medium for storing software and information The outer jacket of the diskette is made of firm plastic that measures 3 5 inches 88 9 millimeters across A device that reads and writes diskettes The diskette drive access is located on the front panel of the system units A diskette drive is optional on both SPARCclassic and SPARCst
83. er 6 1 6 1 6 1 1 2 Return to the operating system environment If you are in a windowing environment exit from it and wait for the system prompt to appear See the documentation supplied with your windowing system Note On a SPARCclassic X terminal just click SELECT on the Halt button in the Terminal Controls window The system responds with an OK gt prompt You can then skip to Step 5 of this procedure 3 Halt the operating system See the documentation supplied with your operating system for instructions on how to halt it For example if you are using the Solaris 2 x operating system 1 At the system prompt type su and press Return 2 Type your superuser password and press Return 4 To inform other system users of your intentions and to then halt the system use Step 3 5 To halt the system immediately continue with Step 3 a Type usr sbin shutdown 5 and press Return The example above uses 5 minutes for a warning period to other system users Use appropriately chosen switch settings to inform other system users of your intentions see shut down 1 Continue with Step 4 b Type usr sbin init 0 and press Return For example to halt the system immediately type nevada su Password welcome Password does not appear on screen nevada usr sbin init 0 6 After halting the operating system wait for either the gt or ok prompt The system displays system halt messages followed b
84. er 1993 CHAPTER 10 System Board Overview This chapter describes how to prepare for replacing the system board and its components and assemblies when you are replacing parts Each SPARCclassic SPARCclassic X SPARCstation LX system board is illustrated and their customer replaceable units CRUs identified m Section 10 1 Before You Begin Section 10 2 Damage Prevention m Section 10 3 Handling System Boards and Assemblies m Section 10 4 Main Logic Board Layouts m Section 10 5 Identifying Replaceable System Board Components 10 1 Before You Begin Before you begin to replace CRUs make sure you do the following Halt your system m Gather the proper tools Disconnect external peripherals if any m Open the system unit m Attach a wrist strap Instructions for the procedures listed above are described in Chapter Power Off and On and in Chapter Internal Access 10 1 Damage Prevention Caution Use an antistatic mat the part number is listed in Chapter 12 Illustrated Parts Breakdown when working with the system board An antistatic mat contains the amount of cushioning needed to protect the underside components to prevent board flexing and to provide antistatic protection 10 2 Handling System Boards and Assemblies Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be
85. er On Self Test POST on page 3 1 The SunDiagnostic Executive is described in the SunDiagnostic Executive User s Guide for the SPARCstations Note The SunDiagnostic Executive is not applicable to the SPARCclassic X terminal SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 29 2 10 Power On Self Test POST This chapter describes the Power On Self Test POST for normal full and abbreviated modes available with your SPARCclassic and SPARCstation LX Section 3 1 Power On Self Test POST Section 3 2 Normal Mode Section 3 3 Full Diagnostic Mode Section 3 4 Abbreviated Diagnostic Mode Section 3 5 Tests the POST Runs Section 3 6 POST Error Messages Section 3 7 Status Lights LEDs and Indicators The Power On Self Test POST diagnostics reside in the Open Boot PROM located on the system board There are two POST modes Normal and Diagnostic CHAPTER 3 Power On Self Test POST The Power On Self Test POST runs when you turn on the system unit power switch and any of the following conditions apply Keyboard is disconnected a Stop d keys are held down when you turn on the power diag switch NVRAM parameter is set to true The POST comprises a sequence of tests designed to evaluate the major hardware components of the main logic board in the short time before the operating system is booted The POST does not perform extensive
86. ert diskettes into the diskette drive Tighten the captive screw Tighten the captive Phillips head screw at the center rear of the bracket to secure it to the chassis Be careful not to overtighten the screw or damage may result Chapter9 Storage Devices 9 19 7 Main logic power cable Diskette drive Pull tab data cable gL A Keyboard soft power on cable Diskette drive power cable hidden from view F Power supply DP i Pull tab Hard drive power cable Hard drive data cable Hard disk drive Drive bracket screw holes Drive mounting bracket Captive screw UNIT TOP FIGURE 9 15 Replacing the Disk Drive Mounting Bracket 4 Reconnect the cables see FIGURE 9 15 Each connector is keyed to fit only one way For connector locations on the main logic board see Chapter 11 Main Logic Board and Component Replacement a Connect the power cable to the hard disk drive b Secure the diskette drive data cable if present and the power supply wiring harness in the cable management guides above the diskette drive see FIGURE 9 12 c Connect the hard disk data cable and the diskette drive data cable if present to their respective connectors on the main logic board see FIGURE 9 15 d Connect the internal power cable and the keyboard soft power on cable to their respective connectors on the main logic board 5 Refer to Chapter 7 Internal Access to perform the following proce
87. ete the ground Caution The AC power cord should remain attached between the system unit and Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard To remove a DSIMM 1 Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap Be sure to leave the system unit plugged in to an AC wall outlet to provide a proper ground path 2 Locate the DSIMM slots on the main logic board See FIGURE 11 9 3 Place an antistatic mat shiny side up next to the system unit The mat is supplied with the replacement DSIMMs 4 Locate and remove the faulty DSIMM See Section 4 4 Determining Faulty DSIMM Locations on page 4 7 The DSIMMs are held in thei
88. eyboard but the system still fails to initialize see Section 4 2 2 System Board Test If the system power supply is internally fused check the fuse The fuse could be blown If the power supply is working you should hear the fans humming Power Supply Test Use a VOM Volt Ohmmeter to check the power supply output voltages Place the VOM negative probe on one of the logic ground pins in the connector and test the 12V 12V and 5 1V power pins individually with the positive probe pins 1 through 7 See FIGURE 4 1 Note The power supply connector J1401 for SPARclassic and SPARCclassic X or J1601 for SPARCstation LX must remain connected to the system board Replace the power supply assembly if any of the voltages are not present See Section 8 1 Power Supply Chapter 4 Troubleshooting Procedures 3 4 2 1 7 112 o m m 0 m m m i m m mig i o f f FIGURE 4 1 Power Supply Connector TABLE 4 2 shows the pin assignments on the power supply connector TABLE 4 2 Power Supply Connector Pin Assignments Pin Description Pin Description 1 5 Vdc 7 5 Vdc 2 5 Vdc 8 5 Vdc 3 Ground 9 Ground 4 Ground 10 Ground 5 12 Vdc 11 12 Vdc 6 POK 12 12 Vdc 4 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993
89. g The keyboard LED diagnostics feature described here applies only to a SPARCclassic or SPARCstation LX system with a Sun Type 5 keyboard connected to its keyboard port The LED diagnostics feature does not apply if a different keyboard is connected to the keyboard port or if a terminal and its keyboard are used as a main console instead of a monitor and Sun Type 5 keyboard If the system passes all the POSTs all four LEDs light again and then go off Next the system banner appears on the screen The SPARCstation banner is shown as an example the SPARCclassic X terminal banner will be different From this point on the keyboard LEDs assume their normal functions that is you should no longer interpret the LEDs as diagnostic error indicators N SPARCstation XXX Keyboard Present ROM Rev X XY X X MB memory installed Serial XXX Ss Ethernet address X X YY Z A BB Host ID XXXXXXXX FIGURE 3 2 SPARCstation System Banner Following the system s successful initialization the operating system is booted automatically unless the NVRAM configuration options specify otherwise You can retrieve more detailed POST failure information by connecting a terminal to the ttya serial port If you connect a terminal you must set the NVRAM parameter diag switch to true For more information about the NVRAM parameters see TABLE 2 1 on page 2 5 Test failure messages are displayed on the system monitor whether or not the system is in Diagnostic
90. g a Volt Ohmmeter VOM measure the power supply voltages at the 12 pin power connector on the main logic board 11 22 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Caution Voltage measurements will be inaccurate if the power supply wiring harness is not connected to the main logic board Without load the power supply will not regulate The colored wires of the power harness supply the following signals and voltages Red 5V Blue 12V Brown 12V Gray POR Power on reset Black Ground Note The POR signal is a Transistor Transistor Logic TTL open collector and pull up is on the main logic board The limits for the voltages are 5V 4 90 to 5 10 12V 11 16 to 12 84 12V 11 6 to 13 2 with a hard drive 12V 10 2 to 13 8 without a hard drive If the voltages are correct you can rule out a defective power supply 1 Reconnect the cables and SBus cards one at a time and measure the voltages each time In this way you can determine whether one of the system components is holding down a power supply voltage 2 Close the system unit using the procedure in Section 7 4 Closing the System Unit on page 7 4 Enter the Forth Toolkit a Turn on the system and the terminal The system will start to boot b Interrupt the boot sequence by pressing the Break key on the terminal keyboard c If you see the ok prompt go to step 3 e If you see the gt prompt continue with
91. h the SBus slot on the main logic board Press gently on the corners of the SBus card until the connection is secure See FIGURE 11 4 Do not force the card Caution Do not press down the SBus card retainer as this can cause it to break Using excessive force to secure the connection may bend or damage the connector pins Refer to the manual supplied with the replacement card for instructions on any additional hardware setup Attach any internal cables leading from the SBus card to the main logic board if applicable Attach any external cables that must be connected to the SBus card if applicable Chapter 11 Main Logic Board and Component Replacement 11 5 SBus card retainer Press down on corners of card Do not press on the plastic SBus card retainer FIGURE 11 4 Connecting the SBus Card 10 Refer to Chapter 7 Internal Access to perform the following procedures m Detaching the wrist strap m Closing the system unit Reconnecting system components 11 Refer to Chapter 6 Power Off and On to turn the power on 12 Refer to the guide for your SBus product to complete any required software installation configuration or additional setup procedures 112 Video SIMM VSIMM This section describes the procedures for removing and replacing a faulty Video SIMM The VSIMM is an option on SPARCstation LX systems only Complete installation procedures can be found in Installing SPARCclassic SP
92. hat have a self diagnostic program contained in the drive controller The drive must be spinning before this test is executed or the test will fail Enter a boot lt disk alias gt command to cause the drive to spin up disk0 SCSI target 0 disk1 SCSI target 1 disk2 SCSI target 2 disk and disk3 SCSI target 3 Performs a diagnostic self test on the CD ROM drive The CD ROM must be set to SCSI target 6 and have a CD inserted or the test will fail 2 6 Test test floppy test screen test scsi test net aui test net tpe test net test disk test disk0 test disk1 test disk2 test disk test cdrom 2 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 TABLE 2 4 On Board Diagnostics Continued Description and Requirements Tests the SCSI tape drive by executing the drive self test program tape and tape0 SCSI target 4 tapel SCSI target 5 Test outputs an alphanumeric test pattern on the system serial ports tt ya serial port A ttyb serial port B You must attach a terminal to the tested port to observe the output This test executes the keyboard self test The four LEDs on the keyboard should flash on at once and this message is displayed Keyboard Present Test test tape test tapeO test tapel test ttya test ttyb test keyboard Sundiag System Exerciser Use the Sundiag System Exerciser to determine real time use of system resources and peripheral e
93. he assembly up FIGURE 11 16 Raising the Speaker LED Assembly Chapter 11 Main Logic Board and Component Replacement 11 27 Main logic board Speaker power System I O board LED assembly UNIT BOTTOM Main logic board extractor lever Se FIGURE 11 17 Removing and Replacing the Main Logic Board 11 28 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Installing the New Main Logic Board This section explains how to install a replacement main logic board in the system unit To install the main logic board Remove the defective main logic board as described in the previous section Install the NVRAM on the replacement main logic board Take the NVRAM chip you removed from the old main logic board and install it on the new main logic board See Section 11 5 Nonvolatile RAM NVRAM on page 11 31 for details Install the DSIMMs Remove DSIMMs taken from the old main logic board and install them in the corresponding DSIMM slots of the new logic board See Section 11 3 3 Replacing a DSIMM on page 11 15 for installation details Install the optional VSIMM if applicable See Section 11 2 2 Replacing the VSIMM on page 11 9 for installation details Install the new main logic board a Grasp the board by the SBus connectors with both hands and guide the main logic board extractor lever through the rectangular cutout in the main logic board see FIGUR
94. he equipment Caution Hot surface Avoid contact Surfaces are hot and may cause personal injury if touched gt gt System Precautions Individuals who service this equipment must observe all safety precautions and ensure compliance with skill level requirements certification and all applicable local and national laws Procedures contained in this document must be performed by trained maintenance providers Only people who have been trained at the Sun Microsystems training facilities or at Sun Microsystems affiliates and have been certified as required by local and national laws are considered qualified Caution Before you begin carefully read each of the procedures in this manual If you have not performed similar operations on comparable equipment do not attempt to perform these procedures 33 Tools Required To remove and replace customer replaceable units CRUs you will need the following tools and materials Small Phillips head screwdriver Small flat blade screwdriver Wrist strap Antistatic surface Volt Ohmmeter VOM for checking voltages and continuity Needlenose pliers Conductive foam to store chips Container for screws Chapter5 Safety and Tools Requirements 5 3 5 4 You will need an antistatic surface on which to place static sensitive parts such as boards cards modules and SIMMs The replacement procedures will let you know when you need to place a part on an antistat
95. he power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard To install a replacement SBus card in the system unit Remove the faulty SBus card See Section 11 1 1 Removing SBus Cards on page 11 1 Make sure you use the wrist strap and antistatic mat Be sure to remember which slot contained the faulty SBus card Read the manual supplied with the replacement SBus card Pay particular attention to the section describing the jumper or switch settings slot requirements and tools needed Remove the replacement card from its antistatic bag Hold the card by the edges Place the SBus card on an antistatic surface either an antistatic mat or the antistatic bag in which the card was shipped If required set the jumpers or switches on the card Refer to the manual supplied with the replacement SBus card Align the mounting plate of the new SBus card with the rectangular opening in the system unit s back panel see FIGURE 11 3 and FIGURE 11 4 Position the card in the same location that the faulty card occupied Insert the two locating tabs on the card s mounting plate into the slots above the rectangular opening in the back panel 11 1 2 11 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 FIGURE 11 3 Positioning the SBus Card Connect the SBus card to its slot Align the connector on the card wit
96. hernet SCSI memory and diskette drive tests See Appendix C On Board Diagnostics for more information Note The SCSI and diskette drive controller tests do not apply to the SPARCclassic X terminal The following sections describe the relationship between the various diagnostic tools and the role each tool plays during the default boot mode A graphical depiction is provided by the flowchart in FIGURE 2 1 The figure shows the path followed in processing for the default boot mode and where in the sequence other diagnostic tests are available or are encountered These descriptions assume you are using a graphics monitor to view test results 2 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Power on switch False default Low level POST Display errors on keyboard LEDs and serial port A Probe SBus devices and interpret their drivers System banner appears on screen High level tests Press Stop a to get to the ok prompt True default Auto False boot y ok prompt False default Boot command at ok prompt On board diagnostics Boot from device alias net Boot from device alias disk Boot user specified device and program v Sun Diagnostic Normal Executive operating system Sundiag System Exerciser Not applicable to the SPARCclassic X terminal FIGURE 2 1 Default Boot Mode Chapter 2 Tr
97. how to remove and replace the system board replaceable parts and components on the system board Part 6 Illustrated Parts Breakdown provides illustrations of the major replaceable parts and lists part numbers Part 7 Appendixes Glossary and Index defines physical electrical and environmental specifications lists connector pinouts and signal descriptions explains how to run selected on board diagnostics and provides a glossary of technical terms and an index What Typographic Changes and Symbols Mean The following table describes the type changes and symbols used in this book Example Edit your login file Use 1s a to list all files system You have mail Press the Return key Press Stop a system su assword To delete a file type rm filename Read Chapter 6 in User s Guide These are called class options You must be root to do this Typographic Conventions Meaning The names of commands files and directories on screen computer output In text key names are capitalized Press and hold the Stop key then type the second character What you type contrasted with on screen computer output Command line placeholder replace with a real name or value Book titles new words or terms or emphasized words TABLE P 1 Typeface or Symbol AaBbCc123 Return Stop a AaBbCc123 AaBbCc123 AaBbCc123 Code samples are included in boxes and may displ
98. hysical address range The last digit in the physical address reported determines which of the two DSIMMs in a bank caused the memory error see TABLE 4 6 Chapter 4 Troubleshooting Procedures 9 4 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Safety and Tools Requirements This chapter describes standards safety procedures and precautions you should follow whenever you need to replace or remove assemblies or subassemblies from your system m Section 5 1 Safety Requirements Section 5 2 Symbols m Section 5 3 System Precautions m Section 5 4 Tools Required CHAPTER 5 Safety Requirements For your protection observe the following safety requirements Follow all cautions warnings and instructions marked on the equipment m Ensure that the voltage and frequency rating of the power outlet to be used matches the electrical rating labels on the system Use properly grounded power outlets 5 1 5 1 To protect both yourself and the equipment observe the safety precautions listed in TABLE 5 1 TABLE 5 1 Safety Precautions Problem Precaution Electric shock Unplug the AC cord from the AC wall socket before working on the power supply Grounding Leave the AC power cord plugged into the AC wall outlet when replacing drives SIMMs chips or the system board Leaving the AC power cord plugged into the wall outlet provides a grounding path for th
99. ic surface The following items can be used as antistatic surfaces Bag that is used to wrap a Sun replacement part Shipping container that is used to package a Sun replacement part Inner surface of the system unit cover Sun electrical static discharge ESD mat with Sun logo Contact your Sun sales representative to purchase it Disposable ESD mat You can purchase it through your Sun sales representative SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 5 4 Power Off and On This chapter explains steps to perform before removing a customer replaceable unit CRU m Section 6 1 Powering Off the System m Section 6 2 Powering On the System CHAPTER 6 Powering Off the System Before you begin any removal or replacement procedure you must halt the system in an orderly manner The procedure depends on whether your system is working normally or not as described in the next sections Caution When the operating system or any other standalone program has already booted do not use the Stop a keys to halt the system Using the Stop a keys to abort program execution can damage data files Powering Off When the System Is Working Normally To halt your system when it is working normally Save all your work Consult your software documentation for instructions on ending a work session and saving your files If you do not save your work you could lose it when you switch off the pow
100. ilar operations on comparable equipment do not attempt to perform these procedures xviii SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Product Description This chapter presents an overview of the major components of the SPARCclassic SPARCstation LX systems and the SPARCclassic X terminal Acquaint yourself with the overview before servicing and maintaining the hardware for these products Section 1 1 System Unit Section 1 2 Monitors Keyboard and Mouse m Section 1 3 External Storage Devices m Section 1 4 System Interconnections The SPARCclassic or the SPARCstation LX systems also can have an external storage device or other small computer system interface SCSI serial or parallel port devices attached The SPARCclassic X terminal software does not currently support external devices CHAPTER 1 System Unit The heart of the SPARCclassic and SPARCstation LX systems is the system unit which contains the following components Main logic board MLB Internal hard disk drive Internal diskette drive optional Power supply FIGURE 1 1 and FIGURE 1 2 show the front and rear panels of the system unit 1 1 Diskette drive optional System power LED FIGURE 1 1 Front Panel of the SPARCclassic and SPARCstation LX System Units The SPARCclassic X terminal chassis looks identical to the chassis shown above except that the components on the list b
101. inout for Parallel Connector Description Strobe Data 0 LSB Data 1 Data 2 Data 3 Data 4 Data 5 Data 6 Data 7 Ack Busy PE Slct Parallel Connector 1300000000000001 2500000000000014 FIGURE B 8 Parallel Connector TABLE B 8 oo Noa Ae ON TD 5 Se e e e wo N e O B 8 B 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 13W3 Video Connector 1 5 0 00 Ai 6 10 A2 A3 FIGURE B 9 13W3 Video Connector TABLE B 9 Pinout for 13W3 Video Connector Pin Description Pin Description Al Video Red 5 Composite Sync A2 Video Green 6 Ground A3 Video Blue 7 Ground 1 Ground 8 Sense 1 2 Ground 9 Sense 0 3 Sense 2 10 Ground 4 Ground B 9 Audio Ports and Audio Module Audio Ports The audio ports are on all models with the SPARCclassic SPARCclassic X SPARCstation LX system board on the SPARCclassic X terminal the ports are covered and inactive Section B 11 Signals for the Audio Ports gives the signals for the audio ports Appendix System Connectors 9 B 10 B 10 1 FIGURE B 10 Audio Ports TABLE B 10 Audio Ports Line Out Line In Left Channel Left Channel Right Channel Right Channel Return Return Signals for the Audio Ports Audio Line Out Connector FIGURE B 11 Audio Line out Connector This connector is used to connect the system audio output to a stereophonic amplifier and external loudspeakers Audio Line
102. isconnect the power cable attached to the hard disk drive see FIGURE 9 12 c Disconnect the main logic power cable and the keyboard soft power on cable from the main logic board see FIGURE 9 12 d Disconnect the diskette drive data cable if present and the hard disk data cable from their connectors on the main logic board see FIGURE 9 12 Note When pulling up the data cable s pull tab brace the main logic board near the socket to minimize board flex 41 9 16 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 UNIT BOTTOM SBus card SBus slots t ti system option VSIMM module option on SPARCstation LX only Main logic board System l Speaker Power LED assembly Keyboard soft power on cable Main logic power cable Diskette drive data cable optional Cable management guides Diskette drive optional DSIMMs fully populated Hard drive data cab Hard drive power cab Power supply Hard drive UNIT TOP FIGURE 9 12 Open View of System Unit 4 Loosen the captive Phillips head screw that secures the disk drive mounting bracket to the system chassis See FIGURE 9 13 and FIGURE 9 14 for the screw s location Lift up the bracket as you loosen the screw until the bracket disengages from the unit top Chapter9 Storage Devices 9 17 Main logic power cable Diskette drive Pull tab data cable L b Keyboard soft power on cable Dis
103. it bottom Remove the screw that secures the lock block to the back panel see FIGURE 7 1 Grasp the unit top at its rear corners and carefully open the system unit like a suitcase see FIGURE 7 1 Lay the unit top flat on the table behind the unit bottom The unit top and bottom are still connected by the power and data cables leading from the disk drive and power supply to the main logic board Note The unit top contains the power supply and disk drive and is the heavier of the two sections SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 72 2 A Remove lock block from back panel System unit opens like a suitcase FIGURE 7 1 Opening the System Unit Caution When you are finished installing parts inside the system unit be sure to close the system unit before turning on the power It is not safe to operate the system unit while it is open See Section 7 4 Closing the System Unit on page 7 4 for instructions Attaching the Wrist Strap A wrist strap or grounding strap provides grounding for static electricity between your body and the chassis of the system unit Electric current and voltage do not pass through the wrist strap Before you handle any components inside the system unit attach the wrist strap to your wrist and to the metal casing of the power supply Caution Boards and modules can be damage
104. k 2 SIMM slot U0304 Bank 1 SBus slotO SBus slot 1 E ISDN Jumper AUI PTC SCSI terminator 1 O board PTC edge connector Video SIMM slot ZN Keyboard mouse PTC 0000 Power supply 0000 0 connector Keyboard soft power on connector NVRAM LED speaker connector Monitor control connectors used by SBus frame buffer cards Boot PROM Audio power PTC FIGURE 11 13 Main Logic Board Layout SPARCstation LX Part 270 2233 11 20 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Hard drive data connector Diskette drive data connector Video SIMM slot Keyboard soft power on connector SIMM slot U0401 Bank 3 SIMM slot U0302 Bank 2
105. k Drive One 3 5 inch hard disk drive can be installed in the top section of the system chassis A 50 pin SCSI data cable and a 4 pin power cable connect to the rear of the drive The hard disk drive is mounted beside the optional diskette drive and can be accessed without removing the disk drive mounting bracket Caution The hard disk drive and diskette drive contain electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the components Do not touch the components themselves or any metal parts Always wear a grounding strap when handling these drives Attach the strap to your wrist and to the metal casing of the power supply Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground 9 1 9 1 Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not a
106. kette drive power cable hidden from view Power supply Pull tab Hard drive power cable Hard drive data cable Hard disk drive Drive bracket screw holes Drive mounting bracket Captive UNIT TOP screw FIGURE 9 13 Removing the Disk Drive Mounting Bracket 5 Remove the disk drive mounting bracket a Carefully bend the power cables where they exit the power supply so that the mounting bracket can be removed without snagging or cutting the cables b Tilt the bracket up and away from the power supply see FIGURE 9 13 c Lift the bracket out of the system unit and place it on an antistatic mat 9 18 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Captive screw Disk drive mounting bracket ZZ FIGURE 9 14 Detail of Disk Drive Mounting Bracket Replacing the Disk Drive Mounting Bracket To replace the disk drive mounting bracket Preparation Before setting the disk drive bracket flat in the unit top connect the power cable to the diskette drive if present and the data cable to the hard drive see FIGURE 9 15 and FIGURE 9 16 Install the bracket Tilt the disk drive bracket toward the front of the unit Gently lower the bracket into position in front of the power supply see FIGURE 9 15 Note The disk drive bracket must engage a securing ridge at the inside front of the unit top If the bracket is installed incorrectly you will not be able to ins
107. laces FIGURE 8 7 Removing the System I O Board 8 3 2 Replacing the System I O Board To replace the system I O board 1 Replace the system I O board a Position the system I O board so that its connectors protrude through their respective openings in the system unit chassis b Align the screw holes in the chassis with the holes in the system I O board and secure the board with the 10 screws provided see FIGURE 8 7 Replace the plastic connector covers if necessary 2 Reinstall the main logic board a Grasp the board by the SBus connectors with both hands Insert the main logic board extractor lever through the rectangular cutout in the main logic board see FIGURE 8 6 Avoid handling any of the delicate electronic components or touching any of the circuit board traces 8 12 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Tilt the board to avoid the speaker assembly and lower it onto the floor of the system unit Align the board s edge connector with its mating connector on the system I O board Push the main logic board extractor lever toward the rear of the system unit to plug the main logic board into the system I O board see FIGURE 8 8 Lower the speaker assembly back to its original position e Reconnect all cables that attach to the main logic board
108. laris are trademarks or registered trademarks of Sun Microsystems Inc in the United States and in other countries All SPARC trademarks are used under license and are trademarks or registered trademarks of SPARC International Inc in the United States and in other countries Products bearing SPARC trademarks are based upon an architecture developed by Sun Microsystems Inc The OPEN LOOK and Sun Graphical User Interfaces were developed by Sun Microsystems Inc for its users and licensees Sun acknowledges the pioneering efforts of Xerox Corporation in researching and developing the concept of visual or graphical user interfaces for the computer industry Sun holds a nonexclusive license from Xerox to the Xerox Graphical User Interface which license also covers Sun s licensees who implement OPEN LOOK GUIs and otherwise comply with Sun s written license agreements THIS PUBLICATION IS PROVIDED AS IS WITHOUT WARRANTY OF ANY KIND EITHER EXPRESS OR IMPLIED INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY FITNESS FOR A PARTICULAR PURPOSE OR NON INFRINGEMENT Copyright 1997 Sun Microsystems Inc 901 San Antonio Road Palo Alto Californie 94303 4900 U S A Tous droits r serv s Ce produit ou document est prot g par un copyright et distribu avec des licences qui en restreignent l utilisation la copie et la d compilation Aucune partie de ce produit ou de sa documentation associ e ne peut tre reprodui
109. lassic and SPARCstation LX workstations and the SPARCclassic X terminal For more detailed installation procedures see Desktop SPARC Hardware Owner s Guide or Using a SPARCclassic X Terminal Note The external drive in FIGURE 1 6 is not part of the SPARCclassic X terminal See FIGURE 1 2 and FIGURE 1 3 for differences between the SPARCclassic X terminal and the SPARCclassic workstation 1 4 1 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Monitor 0 SCSI terminator External drive External drive External drive SCSI cable optional AC power cable gt AC power cable system unit 13W3 video Keyboard ee Mouse X cable cable cable O Thick Ethernet via adapter cable Oe p Audio 1 output jacks ISDN connectors EH SPARCstation LX only Twisted pair connector Ethernet L FIGURE 1 6 Connecting the Major System Components Serial connectors Chapter 1 Product Description 9 Monitor power
110. le coming from the power supply and connect it to the disk drive The disk drive power cable has a small 4 pin connector The power connector on the hard drive is located next to the data connector and is shown in FIGURE 9 1 Make the connection so that the beveled edge of the connector is facing down 8 Attach the disk drive data cable to the disk drive data connector on the main logic board See FIGURE 9 11 for the connector s location The connector is keyed to fit only one way Disk drive data a anI 20 connector m m m iO m g FIGURE 9 11 Main Logic Board This completes the procedure for installing the disk drive Disk Drive Bracket The disk drive bracket resides in the top part of the system unit in front of the power supply see FIGURE 9 13 It houses both the diskette drive and the hard disk drive The hard drive may be removed independently of the disk drive mounting bracket but you must remove the disk drive bracket before removing the diskette drive or power supply Refer to FIGURE 9 12 through FIGURE 9 15 for the location of the disk drive mounting bracket and the captive screw that secures it to the system Chapter9 Storage Devices 9 15 9 2 Removing the Disk Drive Mounting Bracket To remove the disk drive mounting bracket Prepare to work on the system as described in Chapte
111. les See Monitor 1 or 2 Glossary 3 LED monitor 1 monitor 2 NVRAM On Board Diagnostics POR POST PTC printed circuit board PROM RAM ROM SBus card SCSI SunDiagnostic Executive Sundiag System Exerciser system monitor A device comprising a video display and keyboard that are used to type and display information A terminal may be connected to either of the RS 232 serial interface ports on the back panel of the SPARCstation system unit It is not synonymous with the term monitor Time of Day clock Video Random Access Memory VRAM Single In line Memory Module A small printed circuit card that contains video random access memory VRAM chips A device that provides grounding for static electricity between your body and the system unit s chassis Electric current and voltage do not pass through the wrist strap SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 terminal TOD VRAM VSIMM wrist strap Glossary 4 color frame buffer board 1 6 connectors audio ports B 9 external audio line in B 11 audio line out B 10 internal diskette drive pinout B 12 power pinout B 14 SBus pinout B 13 parallel pinout B 8 SCSI internal B 11 serial pinout B 7 type 13W3 video pinout B 9 CPU board removing 11 24 replacing 11 29 test points 11 18 troubleshooting 11 21 CRU customer replaceable unit 1 4 CRU identification 10 6 locating defectiv
112. lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the boards Handle boards only by the non conducting edges Do not touch the components themselves or any metal parts Always wear a grounding wrist strap when handling the boards Attach the wrist strap to the metal casing of the power supply at the rear of the unit top 10 3 A AN AN 10 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Caution Hot surface Avoid contact Surfaces are hot and m
113. megabyte memory modules The maximum memory configuration is 96 megabytes using six 16 megabyte DSIMMs Chapter 11 Main Logic Board and Component Replacement 1 11 3 1 Bank 3 Bank 2 Bank 1 Bank 3 Bank 2 Bank 1 Slot U0401 2 MB SIMM slot U0401 3 oe SIMM slot U0302 D 0 SIMM slot U0303 z ae SIMM slot U0402 a SIM slot Uo301 SIMM 4 Memory Configuration Matrix SPARCclassic X Terminal Slot Slot U0303 U0302 1 MB 1 MB 2 MB 2 MB 4 MB 1 MB 1 MB 2 MB 4 MB 2 MB 2 MB 2 MB 2 MB 4 MB 4 MB 2 MB 4 MB 4 MB 4 MB 16 MB 1 MB 1 MB 2 MB 16 MB 2 MB 2 MB 4 MB 16 MB 2 MB 4 MB SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Slot U0402 2 MB 5 4 on FIGURE 11 9 DSIMM Slot Locations Slot U0301 1 MB 2 MB MB MB MB 1 4 2 2 MB 4 MB 4 MB 4 MB 1 MB 16 MB 2 MB 16 MB 4 MB Slot U0304 MB MB MB MB MB MB MB MB MB MB 1 2 4 1 2 2 2 4 2 4 16 MB MB MB MB MB MB 1 2 2 4 2 TABLE 11 1 Total Memory 8 MB 8 MB 8 MB 12 MB 12 MB 12 MB 16 MB 16 MB 20 MB 24 MB 32 MB 36 MB 36 MB 40 MB 40 MB 44 MB TABLE 11 1 Memory Configuration Matrix SPARCclassic X Terminal Continued Total Slot Slot Slot Slot Slot Slot 48 MB 4 MB 4 MB 16 MB 4 MB 4 MB 16 MB 64 MB 16 MB 16 MB 16 MB 16 MB
114. module option on SPARCstation LX only Main logic board Speaker Power LED assembly Keyboard soft power on cable Main logic power cable System I O board Diskette drive data cable Diskette drive p DSIMMs fully populated Hard drive data 6 Power supply Hard drive Nphappligable to tne inal UNIT TOP FIGURE 1 3 System Unit Internal Components Lid Main Logic Board The main logic board MLB resides in the bottom half of the system unit It plugs into the system input output I O board which provides all of the external connectors to the system unit s back panel see FIGURE 1 2 The different SPARCclassic SPARCclassic X SPARCstation LX MLB layouts are in Chapter 10 System Board Overview FIGURE 10 1 shows a simplified layout of the SPARCclassic and the SPARCclassic X main logic board while FIGURE 10 2 and FIGURE 10 3 show the SPARCstation LX main logic boards Customer replaceable units CRUs residing on the main logic board include Memory modules Video single in line memory modules VSIMMs SPARCstation LX only SBus cards Nonvolatile random access memory NVRAM 1 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Memory Modules SPARCclassic and SPARCstation LX system units come equipped with at least 16 megabytes of dynamic random access memory DRAM expandable to 96
115. mpered ISDN termination is assumed set at the ISDN jack in the wall 13 Not jumpered ISDN termination is assumed set at the ISDN jack in the wall 12 1 2 Jumpered ISDN termination is on the system board default 2 3 Jumpered ISDN termination is assumed set at the ISDN jack in the wall 183 Not jumpered ISDN termination is assumed set at the ISDN jack in the wall SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 11 34 CHAPTER 12 Illustrated Parts Breakdown This chapter provides an illustrated parts breakdown IPB of the major parts that comprise the SPARCclassic SPARCclassic X and SPARCstation LX systems and a list of customer replaceable units and their part numbers m Section 12 1 Illustrations of Selected CRUs m Section 12 2 Replacement Part List Note Remember that diskette drive and hard drive parts do not apply to the SPARCclassic X terminal 12 1 Illustrations of Selected CRUs FIGURE 12 1 through FIGURE 12 3 show exploded view illustrations of the SPARCclassic SPARCstation LX system unit 12 1 Hard drive data cable Diskette drive Diskette drive data cabl hidden R Hard drive power connect Keyboard soft power on cable Main logic power cable Drive mountin bracket Diskette drive power cable Hard drive power cable FIGURE 12 1 Exploded View of the Unit Top 12 2 SPARCclassic SPARCclassic X SPAR
116. n board diagnostic tests Returning to the Monitor Prompt If you need to return to the monitor prompt from the Forth Toolkit type old mode at the gt prompt ok old mode gt C 2 6 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Glossary Attachment Unit Interface is an Ethernet adapter cable A location within a computer system s memory The word location is a synonym Reference is usually made to an address for the purpose of retrieving or storing information See printed circuit board To load the system software into memory and start it running The PROM chip on the main logic board This chip contains boot code consisting of a Forth Monitor program The boot PROM is connected to the I O data bus The diagnostic firmware contained in the boot PROM These diagnostics include the Power On Self Test POST and On Board Diagnostics Wires or bundles of wires configured with connectors at each end and used to connect two or more hardware devices A mechanism for accelerating a microprocessor s performance A cache is a small fast memory between the microprocessor and main memory It quickens a microprocessor s access time to main memory It also stores the most recently used information data instructions etc and provides such information again to the microprocessor more rapidly than could main memory See printed circuit board Central Processing Unit Customer R
117. ng Environment Temperature Wet Bulb Vibration Shock A 2 A 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Physical Specifications TABLE A 3 lists the physical specifications for the system unit keyboard and optical mouse TABLE A 3 Physical Specifications Height Width Depth Net Weight Component inches mm inches mm inches mm Ibs kg System Unit 4 6 118 9 6 245 10 4 264 11 0 4 95 Keyboard Type 5 1 7 44 20 1 510 7 2 182 3 5 1 6 Mouse 2 0 50 4 0 100 3 0 80 0 3 0 14 A 3 Regulatory Compliance TABLE A 4 lists regulatory compliance information TABLE A 4 Regulatory Compliance Information Product Safety EMI Ergonomics X Ray Emissions UL 1950 FCC Class B German Federal DHHS PTB CSA C22 2 No 950 VDE Class B Republic ZH 1 618 IEC 950 NEMKO CB DOC Class B ISO 9241 EN60950 TUV VCCI Class 2 EN41003 TUV Appendix A System Specifications 3 A 4 A 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 APPENDIX B system Connectors This appendix contains pinouts and illustrations of the various system connectors The following connectors are described Section B 1 Attachment Unit Interface AUI Connector Section B 2 Twisted Pair Ethernet Connector Section B 3 ISDN Terminal Endpoint Connector Section B 4 ISDN Network Termination Connector Section B 5 Keyboard Mouse Connec
118. ng FIGURE 9 2 through FIGURE 9 7 matches your drive b Compare the jumper settings in the figure to the settings on your drive c If the settings are not the same change them to match the settings in the figure a S SCSI device address Al a 42 WS enable 0 0 l i Power Data connector connector FIGURE 9 2 Jumper Settings for 207 Mbyte Drive With Jumpers on the Left Hand Side 9 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 SS enable self seek EP enable parity checking WS enable wait spin A2 SCSI device Ai address AO Power Data connector connector FIGURE 9 3 Jumper Settings for 207 Mbyte Drive With Jumpers on the Right Hand Side Chapter 9 Storage Devices 9 5 42 Internal term power SCSI p device A1 Term power to Bus address Delay spin up 5 Parity
119. nnection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Disconnect the speaker LED cable from its connector on the main logic board For the connector location see Chapter 11 Main Logic Board and Component Replacement Squeeze the speaker assembly where indicated in FIGURE 8 2 and slide it up and out of the system unit Caution Do not touch or press on the speaker cone You may damage the speaker or the sound quality Chapter 8 Major Subassemblies 8 5 Squeeze the two levers at the base of the assembly and slide the assembly up FIGURE 8 2 Removing and Replacing the Speaker Power LED Assembly Replacing the Speaker Power LED Assembly To r
120. nostic program you are running a DSIMM location number U number or a memory address may be displayed If the error message displays the location number see FIGURE 4 2 for DSIMM location numbers follow the instructions in Section 11 3 2 Removing a DSIMM on page 11 13 for removing the defective DSIMM at the numbered location To replace the DSIMM follow the directions in Section 11 3 3 Replacing a DSIMM on page 11 15 If the error message displays a physical memory address consult TABLE 4 4 or TABLE 4 5 depending on your DSIMMs capacity to see which memory bank contains the physical address Then look up the last digit of the address in TABLE 4 6 to find out which of the two DSIMMs in that bank caused the memory error Chapter 4 Troubleshooting Procedures 4 7 4 4 For example in a system using 16 Mbyte DSIMMs if an error is detected at physical memory address 12fe958 TABLE 4 4 shows that the error occurred in memory bank 1 DSIMMs U0304 and U0303 TABLE 4 6 then shows that the defective DSIMM is in slot 110304 Follow the instructions in Section 11 3 2 Removing a DSIMM on page 11 13 for removing the defective DSIMM at that location Then to install the replacement follow the instructions in Section 11 3 3 Replacing a DSIMM on page 11 15 SIMM slot U0401 Bank 3 5 SIMM slot 00302 Bank 2 2 ee SIMM slot 0803 Bank 1 z SIMM slot 00402 Bank 3 E 3 SIMM slot U0301 Bank 2
121. nother Workstation 3 5 Tests the POST Runs 6 POST Error Messages 3 8 Status Lights LEDs and Indicators 8 3 1 3 2 3 3 3 4 3 5 3 6 3 7 Troubleshooting Procedures 4 1 No Video Output on the System Monitor 4 2 Power On Does Not Succeed 2 4 2 1 Power Supply Test 4 3 4 2 2 System Board Test 4 5 4 2 2 1 Caps Lock Key Fails to Flash On and Off During POST 4 5 Disk Drive Errors 4 6 4 3 1 Verifying the Built In SCSI Controller 4 6 Determining Faulty DSIMM Locations 7 4 1 4 2 4 3 4 4 Safety and Tools Requirements 5 1 Safety Requirements 1 Symbols 2 System Precautions 5 3 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 5 1 5 2 5 3 5 4 Tools Required 5 3 Power Off and On 6 1 6 1 Powering Off the System 1 6 1 1 Powering Off When the System Is Working Normally 1 6 1 2 Powering Off When the System Does Not Respond Normally 3 6 2 Powering On the System 6 4 Internal Access 1 7 1 Disconnecting the External Cables 1 7 2 Opening the System Unit 7 2 7 3 Attaching the Wrist Strap 3 74 Closing the System Unit 7 4 7 5 Reconnecting the External Cables 7 Major Subassemblies 1 8 1 Power Supply 8 1 8 1 1 Removing the Power Supply 1 8 1 2 Replacing the Power Supply 3 8 2 Speaker Power LED Assembly 8 4 8 2 1 Removing the Speaker Power LED Assembly 4 8 2 2 Replacing the Speaker Power LED Assembly 6 8 3 System I O Board 8 7 8 3 1 Removing the System I O Board 8 7 8 3 2 Replacing th
122. nused SBus board slots Open slots severely reduce the correct airflow in the system and can lead to equipment damage The following items are customer replaceable units Chapter 10 System Board Overview 10 3 System damage and overheating System damage and overheating Item AC power cord Wrist strap ESD mat Printed circuit boards Cover Filler panels 10 44 Main Logic Board Layouts The main logic board MLB resides in the bottom half of each system unit see FIGURE 10 4 FIGURE 10 1 shows a simplified layout of the SPARCclassic and the SPARCclassic X terminal main logic board TABLE 10 2 lists acronyms and abbreviations for certain components Power supply Keyboard soft Diskette drive Hard drive connector power on data connector data connector connector 1 2 lt gt m lt SIMM slot U0401_Bank 3 SIMM slot 00302 Bank 2 SIMM slot U0303_Bank 1 sr SIMM slot 00402 Bank 3 onitor e ey abu ZN SIMM slot U0301 Bank 2 frame buffer cards a SIMM slot U0304_ Bank 1 SBus slot 0 SBusslot1 lt gt 0000 LED speaker aa connector AUI PTC Audio power Keyboard I O board SCSI terminator PTC mouse PTC edge connecto
123. om the harness to the hard disk drive and diskette drive if present Each connector is keyed to fit only one way Refer to Chapter 7 Internal Access to perform the following procedures m Detaching the wrist strap m Closing the system unit Reconnecting system components Refer to Chapter 6 Power Off and On to turn the power on After turning the power back on check for proper operation of the system unit and the newly installed power supply If the newly installed power supply still does not work properly a problem may exist in the system unit such as a blown component or a short circuit Speaker Power LED Assembly This section describes the removal and replacement procedures for the speaker power LED assembly This assembly is mounted on the right hand side of the system unit bottom see FIGURE 8 8 Removing the Speaker Power LED Assembly To remove the speaker power LED assembly Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 8 2 8 2 1 8 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Caution The AC power cord should remain attached between the system unit and an AC wall outlet This co
124. ompt If the auto boot parameter is set to false the system proceeds to the Forth Toolkit ok prompt or to the system monitor gt prompt Using the Forth Toolkit you can direct the system to boot the operating system from a location that you specify or you can execute a variety of additional tests called On Board Diagnostics See the Open Boot Command Reference for a complete description of the Forth Toolkit If the auto boot parameter is set to true the default the system boots a standalone program To determine which program and device to boot from the system checks the diag switch NVRAM parameter TABLE 2 2 summarizes the effect of the auto boot and diag switch parameters TABLE 2 2 Summary of Autoboot and Diagnostic Switch Parameters 1 Autoboot Switch Diagnostic Switch Parameter Parameter Result False False or True gt or ok prompt True False Boot operating system from device alias disk or net for SPARCclassic X True True Boot operating system from device alias net Chapter 2 Troubleshooting Overview 2 5 1 The boot parameters represented here are default settings The defaults may be changed by following the pro cedures listed in the Open Boot Command Summary Once the operating system is running you can invoke the Sundiag System Exerciser if further diagnostic testing is warranted Refer to Section 2 7 Sundiag System Exerciser on page 2 9 for additional information Anothe
125. on 7 3 Attaching the Wrist Strap on page 7 3 2 Make sure that the system unit s power is in the Standby position Make sure that the green LED at the front of the chassis is not lit and that the fan in the power supply is not running 3 Remove the disk drive mounting bracket The disk drive mounting bracket must be removed before the power supply can be lifted out of the system unit Follow the directions in Section 9 2 1 Removing the Disk Drive Mounting Bracket on page 9 16 for removing the disk drive mounting bracket ignore step 1 and the Caution that follows it 4 Make sure that you disconnected the power supply wiring harness from the diskette drive hard disk drive and main logic board 5 Disconnect the system unit AC power cord and detach the wrist strap from the power supply For this procedure the power cord must not bee connected between the system unit and the AC wall outlet Caution Make sure that the system unit is unplugged from the AC power outlet and that the power switch is in the Standby position before you remove replace or install the power supply Failure to take this precaution may result in severe electrical shock 6 Remove the power supply see FIGURE 8 1 Grasp the power supply firmly and slide it about 0 25 inch toward the front of the unit to disengage it from the four hooks in the bottom of the system unit Lift the power supply straight up and out If the power supply does not
126. on cable Pull tab Main logic power cable Hard drive power cable Cable Hard drive management data cable guides Hard disk drive Power supply Disk drive mounting bracket Drive screw holes N 0 Disk drive bracket without grommet Disk drive bracket with grommet Shoulder screw FIGURE 9 1 Hard Disk Drive in the Disk Drive Bracket 9 1 2 Preparing a Hard Drive for Installation To prepare a hard drive for installation you must first verify that the SCSI ID jumpers on the drive controller board are set correctly After you are satisfied that the SCSI ID jumpers are correct follow the directions later in the chapter for installing the hard drive Chapter9 Storage Devices 9 3 9 1 2 1 Verifying the Jumper Settings The SCSI ID jumpers must be set to SCSI address 3 This is the factory default setting but you should verify the jumper settings The location of the SCSI ID jumpers depends on the type of drive shipped with your system FIGURE 9 2 through FIGURE 9 7 show the jumper locations and settings for the various types of replacement drives Note that only one of these illustrations applies to your hard drive To verify the jumper settings on the hard drive 1 Remove the replacement drive from its protective packaging and set it with the component side up on the antistatic mat You now have access to the drive controller board 2 Inspect the jumper settings a Determine which illustration amo
127. or Conner 535 Mbyte Drive 9 7 Jumper Settings for Seagate 535 Mbyte Drive 9 8 Jumper Settings for 1 0 Gbyte Drive Part 370 1546 9 10 Jumper Settings for Seagate 1 0 Gbyte Drive 9 11 Jumper Settings for Connor 1 0 Gbyte Drive 9 12 Installing a Hard Disk Drive 9 14 Main Logic Board 9 15 Open View of System Unit 9 17 Removing the Disk Drive Mounting Bracket 9 18 Detail of Disk Drive Mounting Bracket 9 19 Replacing the Disk Drive Mounting Bracket 9 20 Disk Drive Mounting Bracket 9 22 Main Logic Board Layout SPARCclassic SPARCclassic X Systems 4 Main Logic Board Layout SPARCstation LX System Part 270 2233 10 5 Main Logic Board Layout SPARCstation LX System Part 270 2474 10 6 View of Open System Unit 10 8 Removing the SBus Card 11 3 SBus Slot Filler Panels 11 3 GURE 8 3 GURE 8 4 GURE 8 5 GURE 8 6 GURE 8 7 GURE 8 8 GURE 9 1 GURE 9 2 GURE 9 3 GURE 9 4 GURE 9 5 GURE 9 6 GURE 9 7 GURE 9 8 GURE 9 9 GURE 9 10 GURE 9 11 GURE 9 12 GURE 9 13 GURE 9 14 GURE 9 15 GURE 9 16 GURE 10 1 GURE 10 2 GURE 10 3 GURE 10 4 GURE 11 1 GURE 11 2 n n n n n n SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Positioning the SBus Card 5 Connecting the S
128. ot come equipped with a diskette drive or hard disk drive Section A 1 Input Power Requirements m Section A 2 Environmental Requirements m Section A 3 Physical Specifications m Section A 4 Regulatory Compliance Input Power Requirements TABLE A 1 lists the input power requirements for the system unit TABLE A 1 Input Power Requirements and Power Dissipation Parameter Specification Nominal Frequencies 50 Hz or 60 Hz nominal Nominal Voltage Range 100 120 Vac or 200 240 Vac 100 240 Vac Auto Maximum Current AC RMS 2 A 100 120 Vac 1 A 200 240 Vac AC Operating Range 87 264 Vrms 47 63 Hz Maximum VA Rating 153 8 VA Maximum Power Consumption 107 7 Watts Maximum Heat Output 367 5 BTU hr A 1 A 1 1 Maximum input current with accessory connected to accesory outlet is 6A Environmental Requirements TABLE A 2 lists the environmental requirements for both operating and non operating environments TABLE A 2 Environmental Requirements 10 to 40 C 50 to 104 F 20 to 80 relative noncondensing at 40 C 104 F 25 C 77 F maximum 0 to 3048 m 0 to 10 000 ft 5 22 Hz 0 01 inches p p 22 500 Hz 0 25 g p p 5 g pk 10 msec 1 2 sine wave 20 to 75 C 4 to 167 F 46 C 115 F maximum 5 22 Hz 0 02 inches p p 22 500 Hz 0 5 g p p 5 g pk 10 msec 1 2 sine wave Operating Environment Temperature Humidity Wet Bulb Altitude Vibration Shock Non Operati
129. oubleshooting Overview 3 Low Level POST Code When you turn on the system power the low level POST is initiated if any of the following circumstances apply Keyboard is disconnected m Stop d keys are held down when you turn on the power diag switch NVRAM parameter is set to True The low level POST code which is stored in the boot PROM is designed to test the most basic functions of the system hardware The status of the POST is conveyed by four LEDs on the Type 5 keyboard The Caps Lock LED flashes on and off to indicate that the tests are in progress If a failure is detected during low level POST one of the other three LEDs will light to indicate the nature of the failure See Chapter 3 Power On Self Test POST for more information If the low level POST passes the system probes for SBus devices and interprets their drivers Next a system banner appears on the screen and the high level testing begins During this time the screen displays a series of messages that start with the word Testing Any problems detected during this phase of testing are indicated with error messages on the screen When the high level POSTs are finished the system checks parameters stored in the NVRAM to determine the next step Depending on the parameter settings the system will Boot the operating system from a specified location Continually cycle through the POST sequence S
130. oubleshooting information Chapter 3 Power On Self Test POST 9 3 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 CHAPTER 4 Troubleshooting Procedures This chapter describes how to troubleshoot SPARCclassic and SPARCstation LX system problems Each problem is described and a set of procedures is provided for a solution to the problem Section 4 1 No Video Output on the System Monitor Section 4 2 Power On Does Not Succeed Section 4 3 Disk Drive Errors Section 4 4 Determining Faulty DSIMM Locations TABLE 4 1 describes commonly encountered troubleshooting problems and tips for solving them TABLE 4 1 Troubleshooting Tips Action Verify that the power switch is turned on and that the power cord is connected If both the power switch and the power cord are connected shut down the system and verify that the LED cable is connected If the LED cable is connected the power supply is defective Replace the power supply See Chapter 8 Major Subassemblies Shut down the system The SCSI controller may be defective See Section 4 3 1 Verifying the Built In SCSI Controller If the SCSI controller is OK verify that SCSI ID jumpers are set correctly and that every disk drive on the SCSI bus is set to a different SCSI address Verify that the configuration jumpers on the disk drive are set correctly See Chapter 9 Storage Devices Shut down th
131. ovember 1993 viii Figures 1 2 Figures Front Panel of the SPARCclassic and SPARCstation LX System Units Rear Panel of the System Unit 1 3 System Unit Internal Components 4 Typical DSIMM 5 Typical SBus Card 1 6 Connecting the Major System Components 9 Default Boot Mode 2 3 Arrangement of Type 5 Keyboard Diagnostic LEDs 2 SPARCstation System Banner 3 3 System Power LED on Front of System 3 8 Arrangement of the Type 5 Keyboard LEDs 3 9 Power Supply Connector 4 4 DSIMM Slot Locations 4 8 Opening the System Unit 7 3 Attaching the Wrist Strap 4 Closing the System Unit 7 6 Reconnecting System Components 7 7 Removing and Replacing the Power Supply 8 3 Removing and Replacing the Speaker Power LED Assembly 6 GURE 1 1 GURE 1 2 GURE 1 3 GURE 1 4 GURE 1 5 GURE 1 6 GURE 2 1 GURE 3 1 GURE 3 2 GURE 3 3 GURE 3 4 GURE 4 1 GURE 4 2 GURE 7 1 GURE 7 2 GURE 7 3 GURE 7 4 GURE 8 1 GURE 8 2 System I O Board and Unit Bottom 8 Extracting the Main Logic Board 8 10 Raising the Speaker LED Assembly 8 10 Removing and Replacing the Main Logic Board 8 11 Removing the System I O Board 8 12 Plugging in the Main Logic Board 8 14 Hard Disk Drive in the Disk Drive Bracket 3 Jumper Settings for 207 Mbyte Drive With Jumpers on the Left Hand Side 9 4 Jumper Settings for 207 Mbyte Drive With Jumpers on the Right Hand Side 9 5 Jumper Settings for 424 Mbyte Drive 9 6 Jumper Settings f
132. ower Supply m Section 8 2 Speaker Power LED Assembly m Section 8 3 System I O Board CHAPTER 8 Power Supply The power supply is a self contained metal assembly in the system unit top just behind the disk drive mounting bracket see FIGURE 9 12 The power supply is held in place by four hooks in the unit top that mate with four slots in the power supply In addition the screw at the rear of the system unit that holds the top and bottom halves of the unit together also retains the power supply The power supply wiring harness branches into four separate power cables A 12 pin power cable connects to the main logic board in its right front corner see FIGURE 9 13 Nearby a 3 pin cable provides the keyboard soft power on signal from the main logic board to the power supply Two 4 pin power cables supply power to the hard disk drive and diskette drive if present The power supply is auto sensing and will operate with input voltage of 100 120 Vac or 200 240 Vac without adjustment If the power supply fails to operate replace it FIGURE 8 1 shows how to remove and replace the power supply Removing the Power Supply To remove the power supply 8 1 8 1 8 1 1 1 Prepare to work on the system as described in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and that the fan is not running Then open the system unit and attach a wrist strap as described in Secti
133. phique cette licence couvrant aussi les licenci s de Sun qui mettent en place les utilisateurs d interfaces graphiques OPEN LOOK et qui en outre se conforment aux licences crites de Sun CETTE PUBLICATION EST FOURNIE EN L ETAT SANS GARANTIE D AUCUNE SORTE NI EXPRESSE NI IMPLICITE Y COMPRIS ET SANS QUE CETTE LISTE NE SOIT LIMITATIVE DES GARANTIES CONCERNANT LA VALEUR MARCHANDE L APTITUDE DES PRODUITS A REPONDRE A UNE UTILISATION PARTICULIERE OU LE FAIT QU ILS NE SOIENT PAS CONTREFAISANTS DE PRODUITS DE TIERS co Ca Adobe PostScript Contents Preface xv Product Description 1 1 1 1 System Unit 1 1 1 1 Main Logic Board 4 1 1 2 Memory Modules 1 5 1 1 2 1 Video SIMM 5 1 1 2 2 SBus Cards 1 5 1 1 3 Nonvolatile RAM NVRAM 1 6 1 1 4 Internal Hard Disk Drive 1 7 1 1 5 Internal Diskette Drive 1 7 1 1 6 Power Supply 1 7 1 2 Monitors Keyboard and Mouse 1 7 1 3 External Storage Devices 1 8 1 4 System Interconnections 1 8 Troubleshooting Overview 2 1 2 1 Default Boot Mode 2 1 2 2 Boot PROM Diagnostics 2 1 2 3 Low Level POST Code 2 4 2 4 Diagnostic Tools and When to Use Them 2 7 Contents iii Power On Self Test 8 Selected On Board Tests 2 8 Sundiag System Exerciser 2 9 Forth Toolkit 2 9 SunDiagnostic Executive 2 10 20 2 6 2 7 2 8 2 9 Power On Self Test POST 3 1 Power On Self Test POST 3 1 Normal Mode 4 Full Diagnostic Mode 4 Abbreviated Diagnostic Mode 4 3 4 1 Setting Up a tip Connection to A
134. ppropriate system board layout illustration from FIGURE 10 1 FIGURE 10 2 or FIGURE 10 3 and by looking at the unit bottom illustration in FIGURE 10 4 TABLE 10 2 lists acronyms and abbreviations for certain components of the MLB TABLE 10 2 Acronyms for Components of the Main Logic Board Acronym Abbreviation Full Expression NVRAM Nonvolatile Random Access Memory PROM Programmable Read Only Memory PTC Positive Temperature Coefficient DRAM Dynamic Random Access Memory DSIMM Dynamic Single In line Memory Module VSIMM Video Single In line Memory Module AUI Attachment Unit Interface Ethernet adapter cable LED Light Emitting Diode ISDN Integrated Services Digital Network The SPARCclassic SPARCclassic X SPARCstation LX system board CRUs are listed below Unit bottom DSIMMs VSIMM SBus cards Speaker power LED assembly Main logic board NVRAM System I O board Internal cables Diskette drive data cable Not applicable to SPARCclassic X terminal Hard disk drive data cable Not applicable to SPARCclassic X terminal Note As noted in the part labels shown in FIGURE 10 4 some items are not applicable to the SPARCclassic X terminal Chapter 10 System Board Overview 10 7 SBus card system option SBus slots VSIMM module option on SPARCstation LX only Main logic board System VO board Speaker Power LED assembly Keyboard soft power on cable Main logic power cable Diskette drive data c
135. quipment such as Desktop Storage Modules and External Storage Modules The Sundiag System Exerciser verifies that the system is functioning properly For information about how to use the Sundiag System Exerciser see the Sundiag User s Guide If Sundiag passes the system is operating properly If Sundiag fails the error messages should indicate the part of the system that has failed If the error messages are not descriptive enough you may need to run POST or the SunDiagnostic Executive Note The Sundiag System Exerciser is not applicable to the SPARCclassic X terminal 27 Forth Toolkit The Forth Toolkit is a basic diagnostic utility and system interface If there is any problem with your operating system the Forth Toolkit automatically starts as indicated by the appearance of the ok prompt You can also choose to access the Forth Toolkit by halting the system For information on how to access the Forth Toolkit see Appendix C On Board Diagnostics Chapter 2 Troubleshooting Overview 9 2 8 For extensive information about tests you can run from the Forth Toolkit see Open Boot Command Reference SunDiagnostic Executive The SunDiagnostic Executive is an independent operating system It runs exhaustive subsystem tests that are independent of the normal operating system Run the SunDiagnostic Executive if all POSTs pass but your system still has a problem For information about POST see Section 3 1 Pow
136. r 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Place an antistatic mat shiny side up next to the system unit Disconnect cables a Free the power and diskette drive data cables if present from the cable management guides located above the diskette drive see FIGURE 9 12 b D
137. r PTC FIGURE 10 1 Main Logic Board Layout SPARCclassic SPARCclassic X Systems FIGURE 10 2 and FIGURE 10 3 illustrate the SPARCstation LX main logic boards 10 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Power supply Diskette drive Hard drive connector Video SIMM slot data connector data connector Keyboard soft power on connector SIMM slot U0401 Bank 3 SIMM slot 00302 Bank 7 SIMM slot 00303 Bank 1 SIMM slot 00402 Bank 3 iN SIMM slot 00301 Bank SIMM slot U0304 Bank 1 SBus slotO SBus slot 1 NVRAM LED speaker connector Monitor control connectors used by SBus frame buffer cards ISDN Jumpers MOUSE 0 board edge connector Boot PROM Audio power Keyboard AUI PTC Te terminator FIGURE 10 2 Main Logic Board Layout SPARCstation LX System Part 270 2233 Chapter 10 System Board Overview 10 5
138. r slots by metal clips To release the modules pry apart the clips with your fingernails while pushing the top of the module gently forward about 30 degrees from the vertical position See FIGURE 11 6 Then pull the DSIMM out of its socket Any DSIMMs you remove should be placed on the antistatic mat 11 14 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Note The DSIMMs are closely spaced In order to remove a DSIMM you may need to remove adjacent DSIMMs first Keep track of which DSIMMs are installed in which slots If you are removing a defective DSIMM take care not to get it mixed up with the other DSIMMs FIGURE 11 10 Removing a DSIMM 11 3 3 Replacing a DSIMM The procedure for replacing a DSIMM is the same regardless of the type of SIMM Chapter 11 Main Logic Board and Component Replacement 5 Caution The SIMMs installed in your system must be specifically designed to operate in it Do not transfer a SIMM from a different Sun system unless you are sure it is compatible with your system Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service
139. r standalone diagnostic program you can run is the SunDiagnostic Executive Refer to Section 2 9 SunDiagnostic Executive on page 2 10 for further information To boot user specified programs such as the SunDiagnostic Executive you must be at the gt prompt or ok prompt See Appendix C On Board Diagnostics for a detailed procedure on how to access the gt or ok prompt Note Remember that the System Exerciser and the SunDiagnostic Executive do not run on the SPARCclassic X terminal 2 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 2 4 Diagnostic Tools and When to Use Them TABLE 2 3 provides a summary of the available diagnostic tools and describes when to use each tool TABLE 2 3 Diagnostic Tools Diagnostic Tool When or Why to Use the Tool Power On Self Test POST Executes automatically at power on when Stop d keys are pressed or when the diag switch parameter is set to True The POST code resides in the boot PROM and is driven by the POK signal from the power supply POST tells you if there is a problem with the main logic board the NVRAM or the DSIMMs in the default bank installed On Board Diagnostics Tests functions such as the Ethernet and SCSI interfaces system memory and the diskette drive controller The SCSI and diskette drive controller tests do not apply to the SPARCclassic X terminal You must be at the ok prompt the Forth Toolkit to run the On Board Diagnostics
140. res proper insertion FIGURE 11 7 Installing the VSIMM 113 DRAM Single In line Memory Modules DSIMMs This section describes the procedures for removing and replacing faulty DSIMMs To determine the location of a faulty DSIMM see Section 4 4 Determining Faulty DSIMM Locations on page 4 7 11 10 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 DSIMM Configurations The main logic board contains six DSIMM slots capable of accepting either 1 2 4 or 16 megabyte DSIMMs The six DSIMM slots are logically grouped into three memory banks with two DSIMM slots to a bank Each slot is labeled 1 2 or 3 to indicate its corresponding memory bank You can combine different types of DSIMMs in the same system but you must observe the following restriction The two DSIMM slots within each bank must be identically configured that is they should both contain the same type of DSIMM or else both should be empty FIGURE 11 8 shows a typical DSIMM If you are merely expanding memory and not repairing it refer instead to the document supplied with your memory upgrade Installing SPARCclassic SPARCclassic X SPARCstation LX SIMMs FIGURE 11 8 Typical DSIMM FIGURE 11 9 shows the DSIMM slot locations on the main logic board TABLE 11 1 shows the configuration matrix for the SPARCclassic X terminal using 1 2 4 and 16 megabyte memory modules TABLE 11 2 shows the configuration matrix using 4 and 16
141. ription Pin Description 1 PS1 5 Receive Data 2 PS1 6 Transmit Data 3 Transmit Data 7 PS2 4 Receive Data 8 PS2 Appendix System Connectors 3 ISDN Network Termination Connector FIGURE B 4 ISDN Network Termination Connector Pinout for ISDN Network Termination Connector Description Transmit Data Receive Data PS2 PS2 Description PS1 PS1 Receive Data Transmit Data TABLE B 4 Pin 1 2 3 4 Note The 5 Volt line is fuse protected SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 B 4 B 4 Keyboard Mouse Connector Pinout for Keyboard Mouse Connector Description Keyboard Out Keyboard In KBD_PWR_ON_L 5 Vde Pin 5 6 7 8 Description Ground Ground 5 Vdc Mouse In FIGURE B 5 Keyboard Mouse Connector TABLE B 5 Pin 1 2 3 4 Note All signals are standard TTL levels The 5V supply is fuse protected B 5 Appendix System Connectors B 5 SCSI Connector External D000000000000000000000000 sol MO UOUDC00 0000000 000000000 2 FIGURE B 6 External SCSI Connector TABLE B 6 Pinout for External SCSI Connector Pin Description Pin Description 1 Ground 26 800 2 Ground 27 sd1 3 Ground 28 sd2 4 Ground 29 sd3 5 Ground 30 sd4 6 Ground 31 sd5 7 Ground 32 sd6 8 Ground 33 sd7 9 Ground 34 sdp 10 Ground 35 Ground 11 Ground 36 Ground 12 N C 37 N C
142. rt the NVRAM chip into its socket The carrier is keyed so the NVRAM can be installed only one way Push down on the NVRAM chip until it is fully seated in its socket Refer to Chapter 7 Internal Access to perform the following procedures m Detaching the wrist strap m Closing the system unit m Reconnecting system components Refer to Chapter 6 Power Off and On to turn the power on 11 5 2 SPARCstation LX ISDN Jumper Settings The SPARCstation LX is configured for ISDN support Shown in FIGURE 11 21 are the default jumper settings for the main logic board addresses J1801 and J1802 respectively TABLE 11 3 fully describes these jumper settings Jumper block J1801 pins 1 and 2 jumpered Jumper block J1802 0 pins 1 and 2 jumpered FIGURE 11 21 Default SPARCstation LX ISDN Jumper Settings Chapter 11 Main Logic Board and Component Replacement 3 11 6 TT 0000 The SPARCstation LX system board is delivered with the jumpers set for termination on the system board For more information about setting these jumpers the Sun ISDN BRI SBI Hardware Configuration Guide TABLE 11 3 SPARCstation LX ISDN Jumper Settings Address Jumper Pins Setting Description 111 1 2 Jumpered ISDN termination is on the system board default 2 3 Ju
143. s to the system unit Note Do not disconnect the power cord from the system unit s power receptacle The power cord should remain connected to a grounded power outlet To disconnect the SCSI cable 1 Press in on both the finger clips of the connector that attaches the device to the system unit 2 Pull the connector off 7 1 7 1 Opening the System Unit Caution Before opening the system unit make sure the system power switch is in the Standby position The green LED on the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected it poses no safety hazard To open the system unit and gain access to the CRUs inside it Make sure that the system power switch is in the Standby position The green LED on the front of the system unit should not be lit and the fan should not be running Leave the AC power cord connected to both the system unit and wall outlet Position the system on the table with the rear panel facing you Leave enough space to lay the unit top flat on the table behind the un
144. st level You can modify these parameters using the Forth Toolkit For additional details see the manual Open Boot Command Reference 1 1 3 1 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Internal Hard Disk Drive Diskful systems have one 3 5 inch embedded SCSI hard disk drive installed in the top half of the system unit Depending on your system configuration the drive may be a 207 megabyte a 424 megabyte a 535 megabyte or a 1 0 gigabyte disk The SPARCclassic X terminal is not a diskful system Internal Diskette Drive The top half of the system unit accommodates a 3 5 inch triple density diskette drive which is Sun IBM and NEC compatible It uses 3 5 inch 88 9 mm diskettes types HD 2HD and 2DD and supports densities of 720 kilobytes 1 2 megabytes and 1 44 megabytes The diskette drive is optional on both SPARCclassic and SPARCstation LX systems It is not available for the SPARCclassic X terminal Power Supply The 70 watt power supply is housed in the unit top It connects to the main logic board via a 12 pin connector and provides 5 12 and 12 volts DC The power supply also supplies the power on reset signal Some of the power supply s features include the following Auto sensing Output voltage regulation Overcurrent protection m Overvoltage crowbar feature Internal fusing The external devices have their own power supplies 1 1 4 1 1 5 1
145. stem unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Place an antistatic mat shiny side down next to the system unit Remove any SBus cards See Section 11 1 SBus Cards on page 11 1 for removal procedures Remove all DSIMMs from the main logic board Note carefully the slot where each DSIMM resides so it may be installed in the same slot on the replacement main logic board See Section 11 3 2 Removing a DSIMM on page 11 13 for removal procedures Remove the optional VSIMM if present See Section 11 2 1 Removing the VSIMM on page 11 7 for removal procedures Chapter 11 Main Logic Board and Component Replacement 5 6 Disconnect all cables attached to the main logic board For connector locations refer to FIGURE 11 12 and FIGURE 11 13 in Section 11 4 Main Logic Board on page 11 17 a Disconnect the 12 pin power supply cable from its mating connector by squeezing the clip at the end of the cable and pulling straight up b Disconnect the keyboard soft power on c
146. t be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Locate the VSIMM slot on the main logic board See FIGURE 11 5 Chapter 11 Main Logic Board and Component Replacement 11 7 11 2 1 VSIMM slot 0 4 m m m m m m m m JL oN TIl FIGURE 11 5 VSIMM Slot Location 3 Place an antistatic mat shiny side up next to the system unit The mat is supplied with the replacement VSIMM 4 Remove the faulty VSIMM Grasp the VSIMM at its top corners and carefully wiggle it free from its connector see FIGURE 11 6 Be careful not to touch any of the components on the VSIMM 5 Place the VSIMM on the antistatic mat 11 8 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 FIGURE 11 6 Removing the VSIMM Replacing the VSIMM Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit
147. te sous aucune forme par quelque moyen que ce soit sans l autorisation pr alable et crite de Sun et de ses bailleurs de licence s il y ena Des parties de ce produit pourront tre deriv es du syst me UNIX licenci par Novell Inc et du syst me Berkeley 4 3 BSD licenci par l Universit de Californie UNIX est une marque enregistr e aux Etats Unis et dans d autres pays et licenci e exclusivement par X Open Company Ltd Le logiciel d tenu par des tiers et qui comprend la technologie relative aux polices de caract res est prot g par un copyright et licenci par des fournisseurs de Sun Sun Sun Microsystems le logo Sun et Solaris sont des marques d pos es ou enregistr es de Sun Microsystems Inc aux Etats Unis et dans d autres pays Toutes les marques SPARC utilis es sous licence sont des marques d pos es ou enregistr es de SPARC International Inc aux Etats Unis et dans d autres pays Les produits portant les marques SPARC sont bas s sur une architecture d velopp e par Sun Microsystems Inc Les utilisateurs d interfaces graphiques OPEN LOOK et Sun ont t d velopp s de Sun Microsystems Inc pour ses utilisateurs et licenci s Sun reconna t les efforts de pionniers de Xerox Corporation pour la recherche et le d veloppement du concept des interfaces d utilisation visuelle ou graphique pour l industrie de l informatique Sun d tient une licence non exclusive de Xerox sur l interface d utilisation gra
148. testing on any component of the main logic board Only major failures can be detected by the POST 3 1 Four different LEDs on the keyboard are used to indicate the progress and results of the POST These LEDs are on the Caps Lock Compose Scroll Lock and Num Lock keys as shown in FIGURE 3 1 To indicate the beginning of the POSTs the four LEDs briefly light all at once The monitor screen remains blank and the Caps Lock LED flashes for the duration of the POST Scroll Lock Num Lock LED LED Caps Lock LED Caps Lock Compose UNIX keyboard U S keyboard LED FIGURE 3 1 Arrangement of Type 5 Keyboard Diagnostic LEDs If the system fails any POST one of the LEDs will light to indicate the nature of the problem The LED may be lit continuously or for just a few seconds TABLE 3 1 provides the meaning of each diagnostic LED TABLE 3 1 Interpreting the Keyboard Diagnostic LEDs Diagnostic LED Failed Part Num Lock LED is lit Main logic board Scroll Lock LED is lit NVRAM Compose LED is lit DSIMM U0303 or U0304 Compose LED is lit Last installed memory bank ROM 2 14 or later 3 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Note The Caps Lock LED is not used as a failure indicator it flashes on and off to indicate that the POSTs are runnin
149. the connector wiring and voltages Caution Printed circuit boards are made of delicate electronic components that are extremely sensitive to static electricity Ordinary amounts of static from your clothes or work environment can destroy the boards Handle boards only by the nonconducting edges Do not touch the components themselves or any metal parts Always wear a grounding wrist strap when handling the boards Attach the wrist strap to the metal casing of the power supply at the rear of the unit top Caution The AC power cord should remain attached between the system unit and an AC wall outlet This connection provides the ground path necessary to protect internal system components from harmful static discharges Inside the system unit be sure the power supply wiring harness is connected to the main logic board to complete the ground Caution Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard 11 4 1
150. the following lines to the file etc remote hardwire dv dev ttya br 9600 el C S Q U D ie 0e D In a Shell Tool window on the Sun workstation type tip hardwire Some commands will not work properly in a Command Tool window The system will reply connected hostnames tip hardwire connected The Shell window is now a tip window directed to the Sun workstation serial port When you are finished running POST and want to disconnect the tip window type kill 9 and the process ID number of the tip hardwire process hostname kill 9 PID of tip hardwire process Chapter 3 Power On Self Test POST 5 3 4 1 3 5 Tests the POST Runs Following is a sample listing of the full diagnostic mode tests completed by POST TABLE 3 2 Listing of POST Tests U Context Table Reg Test U Context Register Test U TLB Replace Ctrl Reg Tst U Syne Fault Stat Reg Test U Sync Fault Addr Reg Test U TLB RAM NTA Pattern Test 4 U TLB CAM NTA Pattern Test IOMMU SBUS Config Regs Test IOMMU Control Reg Test IOMMU Base Address Reg Test IOMMU TLB Flush Entry Test IOMMU TLB Flush All Test SBus Read Time out Test EBus Read Time out Test D Cache RAM NTA Test D Cache TAG NTA Test I Cache RAM NTA Test I Cache TAG NTA Test emory Address Pattern Test FPU Register File Test FPU Misaligned Reg Pair Test FPU Single precision Tests FPU Double precision Tests FPU SP Invalid CEX
151. tion Verify that the system power switch is in the Standby position The green LED at the front of the system unit should not be lit and the fan should not be running When the system power switch is in the Standby position and the AC power cord remains connected to a power outlet hazardous AC voltage is still present in the power supply primary Do not attempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Chapter9 Storage Devices 9 21 0 9 3 1 Removing the Diskette Drive To remove the diskette drive 1 Preparation Follow the instructions for removing the disk drive mounting bracket in Section 9 2 1 Removing the Disk Drive Mounting Bracket 2 Remove the four Phillips head screws holding the diskette drive to the disk drive mounting bracket see FIGURE 9 16 3 Remove the diskette drive from the bracket Slide the diskette drive out of the bracket as shown in FIGURE 9 16 and place it on an antistatic mat Screw holes Drive select switch hidden from view Diskette drive power cable Diskette drive data cable Screw holes Diskette drive Thread data cable through this opening in top of bracket Captive screw No rive mounting bracket FIGURE 9 16 Disk Drive Mounting Bracket 4 Detach the diskette drive d
152. tor Section B 6 SCSI Connector External Section B 7 Serial Connector Section B 8 Parallel Connector Section B 9 13W3 Video Connector Section B 10 Audio Ports and Audio Module Section B 12 SCSI Connector Internal Section B 13 Diskette Drive Connector Internal Section B 14 SBus Connector Internal Section B 15 Power Connector Internal B 1 Attachment Unit Interface AUI Connector SU QD0000000000 SU 000000000000 FIGURE B 1 Attachment Unit Interface AUI Connector TABLE B 1 Pinout for Attachment Unit Interface AUI Connector Pin Description Pin Description 1 AUIDO_L 14 AUIDO 2 AUL DI 15 AULDLL 3 AUL CLL 16 AUL CI 4 ENET_PWR 17 GND 5 EMCTL 18 RESET_SENSE_L 6 CHIDX 19 CHIDR 7 CHI_CLK 20 CHIDFS 8 CODFS 21 CODCK 9 N C 22 N C 10 Vcc 23 GND 11 Vec 24 GND 12 Codec_PWR_DN_L 25 MIDI_OUT 13 MIDI_IN 26 MIDI_IN_L B 1 8 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 B 2 Twisted Pair Ethernet Connector FIGURE B 2 Twisted Pair Ethernet Connector TABLE 2 Pinout for Twisted Pair Ethernet Connector Pin Description Pin Description 1 Transmit Data 5 N C 2 Transmit Data 6 Receive Data 3 Receive Data 7 N C 4 N C 8 N C B 3 ISDN Terminal Endpoint Connector 8 1 FIGURE B 3 ISDN Terminal Endpoint Connector TABLE 8 3 Pinout for ISDN Terminal Endpoint Connector Pin Desc
153. ttempt to service the power supply under these conditions Disconnect the AC power cord prior to handling the power supply When servicing any other system component the AC power cord should remain connected and poses no safety hazard Removing a Hard Disk Drive To remove a hard disk drive from the system unit Prepare to work on the system as described in Chapter 6 Power Off and On and in Chapter 7 Internal Access Halt the system and verify that the power LED is not lit and the fan is not running Then open the system unit and attach a wrist strap as described in Section 7 3 Attaching the Wrist Strap on page 7 3 Place an antistatic mat shiny side up next to the system unit Disconnect the hard drive data cable from its connector on the main logic board See FIGURE 9 1 for the cable location Disconnect the hard drive power cable from the hard drive See FIGURE 9 1 for the cable location Disconnect the data cable from its connector on the hard drive Set the data cable aside for installation on the replacement drive Remove the four screws securing the hard drive to the drive bracket Lift the hard drive straight up to remove it from the system unit Place the drive on the antistatic mat This completes the hard disk drive removal process 4 9 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Diskette drive Pull tab data cable Keyboard soft power
154. unit top at a 15 degree angle and rotate your hand position so that thumbs and fingers point up and the five interlock hooks can be aligned Note The interlock hooks do not engage until the unit is lowered to a 45 degree angle Continue to hold the cover with your hands Reconnect the unit top and bottom see FIGURE 7 3 a Rest the front edges together to connect the interlock hooks by pushing gently toward the back of the unit b As you lower the unit top continue to push back to secure the connection The unit top will rest slightly forward c Gently push the unit top back a few millimeters until the unit top and bottom are aligned Attach the lock block Attach the lock block by inserting the PEM screw through the block on the outside through the security loop on the inside and into the power supply see FIGURE 7 3 Tighten the screw with a screwdriver Be careful not to overtighten the screw Chapter 7 Internal Access 5 Align hooks ee een rear QS Interlock hooks Reattach lock block to back panel FIGURE 7 3 Closing the System Unit 7 6 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 7 5 Reconnecting the External Cables Refer to FIGURE 7 4 to reconnect the system cables
155. uppress the boot process and enter the Forth Toolkit ok prompt Suppress the boot process and enter the system monitor gt prompt TABLE 2 1 contains a list of NVRAM parameters and explains their effect on the power up sequence For more on NVRAM parameters see the Open Boot Command Summary 2 3 2 4 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 Note At any point during the high level POST you can abort the POST process and access the Forth Toolkit or system monitor by pressing the Stop and a keys simultaneously TABLE 2 1 NVRAM Parameters Used During POST and Boot Sequence NVRAM Parameter Description selftest megs This parameter determines how many megabytes of memory Default 1 to test during high level POST The minimum is zero the maximum is the amount actually installed in the system diag switch When set to True this parameter forces the system to test Default False automatically all available memory It also enables diagnostic message output to serial port A If a properly configured terminal or tip window is connected diagnostic progress can be monitored through this port Finally a True setting causes the system to boot the operating system from the device and file specified in the diag device and diag file NVRAM parameter fields auto boot When set to False this will suppress the boot process The Default True system halts with either the gt prompt or the ok pr
156. verifying that the green LED at the front of the chassis is not lit and that the fan in the power supply is not running The AC power cord should remain attached to the system unit and AC wall outlet Inside the system unit the power supply wiring harness should remain connected to the main logic board to complete the ground c Attach a terminal to serial port A on the system unit For details see the Desktop SPARC Hardware Owner s Guide A terminal enables you to view the output of the POST results as they are run Alternatively you can set up a tip connection to another workstation see Section 3 4 1 Setting Up a tip Connection to Another Workstation on page 3 5 for details d Disconnect the video monitor the keyboard and the Ethernet cable from the system unit e Remove any SBus cards from the system See Section 11 1 SBus Cards for removal replacement procedures f Disconnect the hard disk drive and the diskette drive from their power and data cables See FIGURE 9 12 on page 9 17 and FIGURE 9 13 on page 9 18 for cable locations 2 Verify the connections of internal parts a Make sure that all SIMMs are correctly seated the power supply harness is connected to the main logic board and all replaceable chips on the board are correctly seated in their sockets See FIGURE 11 12 and FIGURE 11 13 for SIMM locations b Follow the directions in Chapter 6 Power Off and On for turning on the power c Usin
157. y either the gt or ok prompt When either prompt appears you can safely turn off the power in the proper sequence 7 Turn off the power to the system components in this order 1 External drive units if you have any 2 System unit 6 2 SPARCclassic SPARCclassic X SPARCstation LX Service Manual November 1993 3 Monitor Powering Off When the System Does Not Respond Normally To halt a system that is hung or frozen and unresponsive to commands If your system is on a network wait a few minutes before proceeding Your system s slow response may be due to network problems or delays Check with the person in charge of your network If the response is not due to the network go to the next step Press Stop a or Break If you use a Wyse WY 50 VT100 or compatible terminal as the console with your SPARCstation system unit press Break instead of Stop a Note If the system does not respond to the mouse and keyboard pressing Stop a will not be effective You may have to turn the power off wait at least 10 seconds and turn the power on again Then try pressing Stop a once more Note Steps 3 through 6 are not necessary for the SPARCclassic X terminal When the ok or gt prompt appears boot the operating system Enter boot at the ok prompt or b at the gt prompt When you see the login prompt log in to the system with your user name and password Halt the operating system See the
158. y unit that is part of a Desktop SPARCstation It is not synonymous with the term terminal Nonvolatile RAM A test that allows you to test the control registers the network controller the diskette drive system memory the cache the system clock and watch the network for valid packets Power On Reset TTL open collector signal from the power supply which is activated after DC voltages have risen Power On Self Test The POST runs automatically when you turn on the system s power switch or reboot the system The POST stored in the boot PROM is a series of rudimentary tests designed to verify that a viable boot path exists for loading more extensive diagnostic software such as the Diagnostic Executive Positive Temperature Coefficient A self healing device that replaces a fuse After an error occurs the PTC resets Any board with electronic wiring etched on it Programmable Read Only Memory Random Access Memory Read Only Memory A printed circuit board installed in an SBus slot of the system unit Small Computer System Interface pronounced scuzzy An independent operating system running exhaustive subsystem tests independent of SunOS Use the SunDiagnostic Executive after you have run POST and need to troubleshoot which part needs to be replaced Diagnostic software that runs under SunOS displays real time use of system resources and peripheral equipment such as Desktop Storage Packs and External Storage Modu

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