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Service Manual - System 200/410

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6. NNN FS ES NNN N N ON ON ON GN ON ON Ui UU ON Ui gt gt m ON C3 04 04 04 C3 C3 04 04 C3 04 C3 C3 NN N HH i E gt N N TABLE OF CONTENTS continued INSTALLATION continued Adjustments Track Following Adjustuent Tach Gain Adjustment System Check Out System Controls and Indicators Operating Procedures Disc System Load Alternate Disc Load Alternate Tape Load From System Tapes Writing Prototype Sectors 1 thru 15 Formatting Disc Installing Operating Updating System Software Creating Backup Tape THEORY OF OPERATION Imtroduction Functional Description o Processor Model 1340 1345 Video Display Terminal Model 7250 Disc Drive Model 2400 Magnetic Cartridge Drive Model 6400 Matrix Printer Model 3200 Processor Functional Description Central Processing Unit 1340 1345 Main Memory ow e 8154 Disc Drive Controller Magnetic Cartridge Controller Accessory PCB Bus Structure Input Output Channel Busses Direct Memory Access DMA Channel Busses Software s MAINTENANCE Introduction Preventive Maintenance Corrective Maintenance Special Tools and Test Equipment Qd
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13. Is Proprietary Notice Displayed On VDT Tape Run away Check Tape Drive cable installed per Table 2 7 NO YES YES YES Adjust Disc Drive flow chart at Tape Cartridge per Section 2 3 8 Verify correct System Tape Check memory address switches per section 2 3 3 3 CPU Accessory Memory or VDT problem Tape Drive problem refer to Tape Drive Service Manual Refer to Chapter 3 Re load system from tape to disc as explained in Section 2 6 6 Run Machine Level then BASS diagnostics per Section 4 2 3 2 and 4 2 3 3 5 REMOVAL REPLACEMENT PROCEDURES 5 0 INTRODUCTION This chapter contains information and procedures to aid in the removal replacement of the System 200 410 Processor Disc Drive Cabinet assemblies sub assemblies Also contained in this chapter is a listing of spared parts for the Model 1340 1345 Processor Removal replacement procedures for peripheral sub assemblies can be found in the respective peripheral Service Manual 5 1 MODEL 2400 DISC DRIVE The following is the recommended procedure to remove replace the entire Model 2400 Disc Drive unit mounted in the System 200 410 Processor Disc Drive Cabinet see Figures 2 4 and 2 8 5 1 1 REMOVAL REPLACEMENT 1 Set Processor front panel POWER switch to OFF 2 Set Processor SERVICE switch to OFF 3 Set Pr
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15. 1 INTRODUCTION 1 0 PURPOSE This Service Manual is intended to aid the Service Representative in the installation and maintenance of the Basic Four System 200 410 computer systems The System 200 and 410 are very similar in structure and operation therefore the information contained in this Manual applies to both Systems unless specified otherwise Detailed information for the Video Display Terminal Printer Disc Drive and Magnetic Tape Cartridge Drive MTCD will not be included in this Manual For more detailed information refer to the respective Service Manuals BFC Document Number Equipment 8019 Video Display Terminal Service Manual Model 7250 8012 Matrix Printer Service Manual Model 3200 8005 Disc Drive Service Manual Model 2400 8015 Magnetic Tape Cartridge Drive Service Manual Model 6400 Additional technical information on the CPU may be found in the Model 1300 Central Processing Unit Technical Manual BFC Document Number SM 1020 These Service Manuals will be referenced within this document when applicable 1 1 PHYSICAL DESCRIPTION TABLE 1 1 The System 200 410 consists of a Processor Fixed Media Disc Drive Video Display Terminal s Printer s and Magnetic Tape Cartridge Drive MTCD Optional equipment presently available include 9 track reel to reel tape drive various high speed printers binary synchronous communications and additional video display terminals 1 1 Both systems can be exp
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17. Is Proprietary Notice Displayed On VDT Screen ves Verify Bisc Drive radial cable and VDT interface Cable installed pin to pin per Table 2 7 Perform manual VDT boot check per section 2 4 1 Refer to VDT service manual You Enter Flow Chart At 9 Disc Drive Probiem Refer to Disc Drive Service Manual Check Disc Drive cables installed per Table 2 7 3200 MATRIX PRINTER Install paper and ribbon in Printer per Service Manual Set Printer Power switch to ON Does Check Power lamp fuse illuminate and Q fan operate ves print head NO seek right margin then left margin Yes Does Top of Forms and Ready lamps illuminate Press Printer Test Switch Is ipple Pattern 0 printed YES Depress Printer Test Switch Refer to Printer Service Manual See Printer Service Manual Refer to Printer Service Manual Refer to Printer Service Manual Set Cartridge Drive Power switch to ON See Cartridge Tape Drive Service Manual Insert Svstem Tape Cartridge See Cartridge Tape Drive Service Manual Does tape go forward then rewind to BOT YES Perform manual Set CPU Sense Switches for Tape System Load see Fig 2 13 Press and release Processor Load Switch
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19. 0000 0007 is an 8 bit uni directional and as its name implies carries information sent from the CPU to the peripheral Controllers The Input Data Bus 1000 1007 is also 8 bit uni directional and carries information sent from the peripheral Controllers to the CPU The control bus 101 102 IO3X is a 3 bit uni directional bus that carries information sent from the CPU 1 0 control register to all peripheral Controllers The bit pattern that appears on the control bus specifies to the selected peripheral Controller what action is to be taken on the Input and Output Data busses refer to Table 3 2 of data transfer either direction requires two steps First a control byte is placed on the output bus This control byte specifies the device address of the Controller to be communicated with bits 0 4 and the nature of the byte to be transferred bits 5 7 Each controller interprets bits 5 thru 7 differently Second a command is placed on the control bus to define the data transfer Table 3 2 shows how the number present on the three 3 control bus lines is decoded by the Controllers 5 14 TABLE 3 2 CONTROL BUS COMMANDS Number 1 0 Activity on Controller Reset Control States WE TFC Control Output Block Acknowledge Interrupt Acknowledge Data Input DIXX Three 5 types of information is sent the CPU to the Controllers on the Output Data bus CPU to Controll
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22. E 800 PATA ovr sies OUTPUT DATA sec 7 LX o pevice add x 219 DATA TRAS FER O Apo 4 0 Figure 3 8 Block of Character 1 0 Timing Diagram 3 2 6 2 Direct Memory Access DMA Channel Busses The DMA channel consists of two 2 physically independent busses that work in conjunction with one another to provide DMA to the CPU Disc Drive Controller and MTCD Controller see Figure 3 2 DMA is a means of directly transferring data between the Disc Drive MTCD or CPU and Main Memory The memory data bus is 8 bit bi directional and provides the path for data transferred between Main Memory and the Disc Drive Controller MTCD Controller and CPU The memory bus is 16 bit uni directional and provides the path for memory address information sent from the Disc Drive Controller MTCD Controller and CPU to the Main Memory Timing and control signals are sent on set of lines that interconnect Main Memory CPU Disc Drive and MTCD Controllers 3 3 SOFTWARE A discussion of the System 200 410 is not complete without an examination of the computer software structure Software or program is the instructions which dictate the exact course of action the computer will take under a particular set of circumstances The System 200 410 utilizes three different software languages all of which are sub sets of one another as shown in Figure
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24. EXECUTE Che 77724 Kour w amp Figure 3 6 2 0 Comman 75 Au 1 0 CON PRESENT EXECUTE RESET COWTROLLER Aw cpu Roo Wwe SPECIFIED Yo Comm ROUTINE FORMAT DISE ROUTE YES o EXECUTE READ WRITE mae n TRANSFER ROUTINE EXECUTE SEARCH FOR HEADER ROUTINE EKECUTE EAECUTE 0 ERROR 75 HEADER wo CPA Foo p E007 WE EXECUTE READ OR WRITE TRANSFER Bay NIE EXECUTE xecore EXECUTE ERROR yes _ ERROR eee yz PETECTED ROOTIVNE Rov Time Simplified Firmware Flowchart Disc Drive Controller The MTCD Controller can recognize the following I O commands as sent by the CPU Inputs Command Byte DMA Write Read Inputs Interrupt Mask CRC Enable Sets CRC Enable FF Last Latch Input Imputs DMA Data Byte Init Latch Inputs MTU Data Byte Select Unit LSB Inputs MTU Status Byte Select Unit MSB DMA Data w o Request Track Select LSB Outputs Test Strobe Track Select MSB Output Loads Status Bus Select Gate Loads LSH DMA Address Rewind Loads MSM DMA Address Reverse Output Sends Data Byte to CPU Forward Send Data Byte to MTU High Speed Sends Interrupt Request to CPU Write Heads Enable DMA Bank Select Write Data Enable Sends Da
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27. carriage return in response to ENTER PROGRAM 2 31 6 7 2 6 6 Enter 2 in response to ENTER NAME or BASS Perform disc formatting INSTALLING OPERATING SYSTEM FROM TAPE The Operating System software can be loaded from the System Tape Cartridge to the disc provided MTCR1 OSMNTC the bootstrap and the serial number are intact Install the system software as follows 2 2 6 7 2 6 8 2 32 Insert System Tape into Tape Drive Set CPU PCB sense switches for Tape Cartridge Alternate Load see Figure 2 15 After the has been rewound and moved to the beginning of tape press Processor Load switch Enter BBIITC followed by carriage return in response to ENTER PROGRAM NAME Enter in response to ENTER PGM NAME MTC or BASS Perform a system installation by selecting Option 6 on MTC menu UPDATING SYSTEM SOFTWARE Insert System Tape containing updated software into Tape Drive Perform Alternate Tape Load refer to Section 2 6 3 Enter BBITTC followed by Carriage return key in response to ENTER PROGRAM Enter in response to ENTER NAME or BASS Perform a system update by selecting Option 7 in MIC CREATING BACKUP TAPE Perform Alternate Disc Load refer to Section 2 6 2 Enter BBIITC followed by CR carriage return key in response t
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31. Gi Qi 04 04 04 1 MOS gt Ga Qi a EL Page NES 9224 2 26 220428 2 28 2 30 2 30 2 31 2 51 2 31 2 31 2 32 2 32 2 32 CHAPTER 4 NNN N N C3 QQ Q3 N T 2 CHAPTER 5 6 6 0 TABLE CONTENTS continued MAINTENANCE continued Troubleshooting Procedure Diagnostic Tests CPU Boot Checker Diagnostic Machine Language Diagnostics Basic All Purpose Service System BASS Diagnostics System Power Up Check REMOVAL REPLACEMENT PROCEDURES Introduction Model 2400 Disc Drive Removal Replacement Spare Parts List REFERENCE DATA Reference Data Page Figure N N N N J t 1 i E i 1 ON tO H I2 60 C3 04 04 04 04 04 S N N N I vi LIST OF ILLUSTRATIONS System 200 410 Typical Configuration Processor Disc Drive 110 VAC Outlet Wiring Peripheral 110 VAC Outlet Wiring Typical System Floor Plan Disc Drive Components View Processor Card Cage Locations and PDU Baud Rate Switch Settings Bytes Sector Disc Drive S r Sel Settings PLOX PCB Processor Disc Drive cabinet Major Assenbii os System Cables Disc Drive Power Supply SORS C COT pin Cable to
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33. 5 VDC 1 5A from CPU supplied via connector 1 on circuit board 65 F to 80 F 18 C to 27 C 40 to 60 no condensation TTL or DTL integrated circuits 2 INSTALLATION 2 0 INTRODUCTION A summary checklist of the major System 200 410 installation tasks are arranged in the proper order of performance as shown in Table 2 1 Reference the section listed in the table for details regarding each task A summary of installation specifications is contained in Table 2 2 TABLE 2 1 INSTALLATION SUMMARY CHECKLIST Unpack shipping containers check inventory and damage Verify customer AC power Verify customer environment 2 Verify system switch settings Check inter power supply resistances Release Disc Drive locking devices 3 2 45 9 5 4 2435 Install verify cables 2 3 6 Perform system power up check 1 Adjust verify Disc Drive 2 5 8 1 Verify System configuration f 2 4 4 2 3 1 LUN LLL ccc 5 4 5 6 7 0 TABLE 2 2 INSTALLATION 5 5 Parameters Characteristics PROCESSOR DISC DRIVE CABINET Dimensions Width 22 4 inches 56 9 CM Depth 32 0 inches 81 3 CM Height 29 0 inches 73 7 CM Weight 275 pounds 124 7 KG Service Clearances Front 36 0 inches 91 4 CM Rear 30 0 inches 76 2 CM Sides 18 0 inches 45 7 CM Electrical Voltage 115 230 VAC Frequency 60 50 HZ Current 10 5 5 25A Environment Temperature 65
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36. to 80 F 18 to 27 Humidity 40 to 60 mo condensation Cable Lengths Power 9 feet 2 7 M Signal N A VIDEO DISPLAY TERMINAL VDT Dimensions Width 18 3 inches 46 4 CM Depth 21 5 inches 54 6 CM Height 12 5 inches 31 8 CM Weight 25 pounds 11 3 KG Service Clearances Front 36 0 inches 91 4 CM Rear 12 0 inches 30 5 CM Sides 6 0 inches 15 2 CM Electrical Voltage 115 230 VAC Frequency 60 50 HZ Current 1 1 0 55A 2 2 20 10 power up surge for 15 seconds TABLE 2 2 INSTALLATION SPECIFICATIONS continued Parameters Characteristics VIDEO DISPLAY TERMINAL VDT Environment Temperature 65 F to 80 F 18 to 27 Humidity 40 to 60 mo condensation Cable Lengths Power Signal MATRIX PRINTER 8 feet 2 4 M 1000 feet maximum 304 8 M Dimensions Width 26 0 inches 66 0 CM Depth 22 0 inches 55 9 CM Height with stand 37 0 inches 94 0 CM Weight 100 pounds 45 4 KG Service Clearances Front 36 0 inches 91 4 CM Rear 30 0 inches 76 2 CM Sides 18 0 inches 45 7 CM Electrical Voltage 115 230 VAC Frequency 60 50 HZ Current 1 75 88A Environment Temperature 65 F to 80 F 18 C to 27 C Humidity 40 to 60 no condensation Cable Lengths Power Signal 8 feet 2 4 M 1000 feet max 304 8 serial interface only 15 feet 4 6 M parallel interface only TABLE 2 2 INSTALLATION 5 5 continued Parameters MAGNETIC TAPE C
37. 1 12 122425 Binary Synchronous Communications Controller 1 135 1 3 4 Parallel Local Printer Controller 1 13 CHAPTER 2 INSTALLATION Introduction 3 Unpacking Procedure Preinstallation Checks 2 0 2 1 2 1 2 5 242 2 5 2 2 1 AC Power Requirements 2 5 22242 Power Receptacles 2 6 2 2 3 Environmental Requirements 2 8 2 2 5 1 Temperature 2 8 2 2 3 2 Humidity 2 8 2 2 3 3 Static 2 8 2 2 4 Space Requirements 2 9 2 System Installation 2 9 2 3 1 15 2 9 24952 Releasing Disc Drive Devices 2 9 2 3 2 1 Head Actuator Lock 2 11 2 3 2 2 Spindle Lock 2 11 2 3 5 Switch Settings 5 1 Accessory S dE ar UM su see a eS 2545 2 4 or 8 Way Controller PCB ee 2593929 Memory PCB s deter EL 2 5 5 4 Disc Drive Interface PCB P N 24201A Moe de Se Se ia 2492950 Disc Drive PLOX PCB P N 24142 2 13 2 5 3 6 Video Display 1 5 2 15 2 3 4 Inter Power Supply Resistance Check 2 15 2 5 5 Power Supply Output Check 2 7 25 5 1 CPU Memory Power Supply ac ah x 2 17 2 5 5 2 Disc Drive Power 5 1 2 21 290 Cable Interconnection s 2 22 25 7 System Power Up 2 24 111
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40. RESERVE This lamp when illuminated indicates the Memory Power Supply voltages are present Figure CIRCUIT BREAKER 9 This Circuit Breaker Switch controls the application of AC power to the Processor PDU Figure 10 SERVICE SWITCH This switch controls the application of AC power to the Memory Power Supply and Figure 2 5 connects the battery to the charger and inverter TABLE 2 8 PROCESSOR DISC DRIVE CONTROLS AND INDICATORS continued 11 POWER This switch controls the application AC Figure 2 4 12 power to the Disc Drive Power Supply motor FAULT and card cage fan This red colored LED when illuminated indicates the Disc Drive logic detected a fault The nature of the fault is specified by the status bits refer to Model 2400 Disc Drive Service Manual Figure 2 4 13 READY This green colored LED when illuminated indicates the Disc Drive is in a ready state 1 heads at cylinder 0 after initial power up or at specified cylinder during normal operation no fault detected and motor at speed Figure 2 4 RUN HALT RESERVE Figure 2 15 Processor Front Panel Switches Indicators 2 6 OPERATING PROCEDURES 2 6 1 DISC SYSTEM LOAD 1 Set CPU sense switches for Disc System Load see Figure 2 13 2 Press and release Processor Front Panel Load switch 5 Enter in response to DO YOU WANT SPOO
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45. Disc Drive Interface PCB Terminator 26 Conductor Ribbon 902622 Disc Cont Radial Disc Drive Imterface PCB Magnetic Tape MTCD Cont Cartridge Drive 50 Conductor Ribbon 900960 NOTE Figure 2 9 identifies the location of connectors listed above Use with single Serial remote Printer Use with Parallel local Printer Additional VDT s Serial Printer use 4 or 8 Way Controller PCB Connect Serial Printer to last terminal port refer to Section 2 3 3 Contrasting stripe Figure 2 11 Cable to Connector Orientation 2 3 7 SYSTEM POWER UP CHECK Perform the System Power Up Check as described in Chapter 4 Section 4 2 3 4 The System Power Up Check presents a logical approach to verifying that the system is operating properly and identifying common equipment problems encountered during installation 2 3 8 ADJUSTMENTS 2 3 8 1 Track Following Adjustment It is recommended that Disc Drive Track Following circuitry be checked as outlined in this procedure when the system is installed First perform Track Following Adjustment then Tach Gain Adjustment refer to Section 2 3 8 2 Adjustment to the Track following circuitry R32 on PAMP PCB should not be attempted unless a Zero Recovery Tape is immediately available 2 24 otherwise hardware damage program errors may result 10 Connect Oscilloscope Channel to test point 16 on PSER PCB Install Disc D
46. Figure 3 2 also shows how each peripheral device is tied to its associated Controller The respective Service Manual describes its relationship Printer VDT Disc Drive and Magnetice Tape Cartridge Drive to the controller 3 2 1 CENTRAL PROCESSING UNIT MODEL 1340 1345 The Central Processing Unit CPU as shown in Figure 3 2 initiates controls and terminates all actions within the computer system as well as performing arithmetic calculations and logical functions The CPU controls the movement and modification of data throughout the system as specified by the program present in Main Memory The CPU hardware is designed with certain arithmetic logical data movement and memory capabilities Each of these capabilities and sub variations are defined by a set that specify the exact action the CPU hardware will take The program is a group of these instructions that are fed to the CPU in a unique order to perform a unique task The CPU used in the System 200 410 is micro programmed The main difference between the micro programmed CPU and the more standard fixed instruction CPU is in the control unit The control unit is the part of the CPU that enables the various control signals to sequence the CPU hardware to perform a given program instruction In the mirco programmed CPU the actions of the control unit are determined by a firmware program contained ina read only memory This program called the micro progra
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53. CONTROLLER The 4 or 8 Channel Terminal Controller option allows up to four 4 or eight 8 serial type VDTs and or printers to be tied to the System The 4 or 8 Channel Terminal Controller is located in the Processor card cage Each channel utilizes the standard RS 232C interface or 8 Channel Terminal Controller Data Format Bit Rate Syne Codes VRC LRC CRC Line Modes Line Control 1 0 Bus Modes Interrupts Modem Interface Power Requirements The following lists the specifications for the 4 5 6 7 or 8 bits 9600 baud maximum Programmable Programmable Synchronous full or half independent transmit and receive 15 Auto answer and line turn around Programmed or concurrent data transfer Data service line conditions and synchronization RS 232C 5 V 1 8A 16 75 V 100mA 1 3 3 BINARY SYNCHRONOUS COMMUNICATIONS CONTROLLER The Binary Synchronous Communications Controller BSC is a modem interface that allows BSC over full and half duplex data links The BSC Controller allows data transmission rates from 200 to 20 000 baud The BSC Controller is a single plug in board mounted in the processor card cage see Figure 2 5 The BSC Controller has a single channel which utilizes an 8 bit character encoded in EBCDIC transparent or non transparent character code assignments All data is transmitted as a serial bit stream Automatic answer is a standard feature The following lists t
54. MAGNETIC TAPE CARTRIDGE DRIVE 6400 AC Power Requirements DC Power Requirements 24 VDC 24 VDC 5 VDC MATRIX PRINTER 3200 Type Printer Speed Form Thickness Form Width Line Feed Rate Vertical Slew Rate Interface Environmental Temperature Relative Humidity AC Power Requirements 1 10 Characteristics 110 VAC 60 HZ 1 220 VAC 50 HZ phase 1 5A phase 0 75A m 1 8A typical 3 4A maximum 1 9A typical 3 5 maximum 1 4A typical 2 6A maximum 9 x 7 dot matrix impact 80 120 or 160 characters per second 0 040 inch maximum 4 inches to 15 inches 10 2 CM to 38 1 CM 60 x 1077 seconds per line feed 3 5 inches per second Serial RS 232C full duplex asynchronous Parallel TTL compatible line drivers and receivers 65 F to 80 18 to 27 405 to 605 no condensation 110 VAC 60 HZ 1 phase 5A 220 VAC 50 HZ 1 phase 2 5A TABLE 1 2 Parameters Type Usable Screen Area Screen Size Horizontal Resolution Keyboard Character Format Character Size Interface Data Transmission Speed Environmental Temperature Relative Humidity AC Power Requirements uLL L LLL L LLLl L UUUUUU _ 1 3 OPTIONS VIDEO DISPLAY TERMINAL 7250 OPERATIONAL SPECIFICATIONS continued Characteristics Cathode Ray Tube electro mechanical keyboard 6 7 x 90 inches 17 02 x 228 6 CM 12 0 inche
55. The Disc Drive Controller see Figure 3 2 provides the interface required to pass information between the CPU and the Disc Drive The Disc Drive Controller provides the following functions e Translate I O commands issued by the CPU into commands that the Disc Drive can recognize e Perform error checking of information passed between the Disc Drive and the CPU e Detect particular conditions and issue interrupt commands to the CPU e Provide Controller and Disc Drive status information to the CPU e Implement DMA transfer between the Disc Drive and the Main Memory Synchronize timing of information transfer The Disc Drive Controller consists of a microprocessor system 2901 that via a resident firmware program and additional logic circuits performs the above functions The microprocessor initiates tests and controls the entire operation of the Controller as specified by its firmware and CPU commands The Disc Drive Controller can recognize and perform the following I O commands as sent by the CPU 1 DMA Transfer 2 Special Transfer 3 Set Lower Cylinder 4 Set Alternate Lower Cylinder 5 Set Upper Cylinder 6 Set Alternate Upper Cylinder 7 Set Head 8 Set Offsets 9 Set Interrupt Mask Bit 10 Reset Interrupt Mask 11 Reset Controller 12 Input Status to CPU 15 Input Alternate Lower Cylinder to CPU 14 Input Alternate Upper Cylinder to CPU 15 No operation The operation of the Disc Drive Controller
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57. cover Install PCB extenders to Disc Drive Servo Control SCON and Velocity Servo VSER PCB s Connect Oscilloscope Channel A to VSER PCB connector pin R46 READY Connect Oscilloscope Channel B to SCON PCB connector pin L26 positive position error voltage Set Oscilloscope controls as follows Volts division 1 Time division 5 milliseconds Trigger source Channel A Slope Minus Trigger mode AUTO Vertical mode ALTERNATE For System 200 without lister compiler 32K memory enter and run the Cylinder 000 to 105 Seek machine level program as follows For systems with lister compiler skip Step 7 and go to Step 8 a On terminal 0 set VDT mode switch rear panel to half duplex b Set CPU PCB sense switches for VDT Bootstrap Load see Figure 2 13 c Press VDT CLEAR key d Press and release Processor Front Panel Load switch e Enter the following hexadecimal numbers 020004870040EF0039C73117170261FAEF001205 97000061039700693A27394761E4 then Motor Bar IV Enter 0200 then motor bar IV Observe that the disc heads are alternating between Cylinders 000 and 105 g Go to Step 9 Switch 1 SENSE SWITCH FUNCTION 1 2 3 4 2 OFF OFF OFF OFF Fixed media disc system load 3 OFF ON OFF Fixed media disc alternate load ON ON ON ON Tape cartridge alternate load 4 ON OFF OFF ON VDT bootstrap load on off Figure 2 13 CPU PCB Sense Switch Settings 8 For System 200 with li
58. is best described by a flowchart of the Disc Drive Controller s firmware program see Figure 3 6 The program is structured such that particular conditions are tested and depending on the results of the test s specified sequence of instructions or routine is executed to perform the specified function 3 2 4 MAGNETIC TAPE CARTRIDGE CONTROLLER The Magnetic Tape Cartridge Controller provides the interface required to pass information between the CPU and the Magnetic Tape Cartridge Drive MTCD see Figure 3 2 The MTCD provides the following functions e commands sent by the CPU start stop timing e Tape record formatting e Tape positioning e Status reporting and interrupt control e DMA transfer The Magnetic Tape Cartridge Controller consists of a microprocessor system Z80 that via a resident firmware program and additional logic circuits performs the above functions The microprocessor initiates tests and controls the entire operation of the Controller as specified by its firmware and CPU commands CPU commands are sent to the Magnetic Tape Cartridge Controller via the I O channel Once received by the Magnetic Tape Cartridge Controller the CPU command is decoded and depending on the command a specific firmware routine is executed 3 11 3 12 ROUTINE PRESSED NO EXECUTE POWER O OR LOAD r Rese yes yasa EXECUTE CPU MTERO LT ROUTING
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62. 01 FILTER A C LINE 1 1 1 1 19 857080 105002 002 CAPACITOR 6 3K 40V 1 1 1 1 20 837090 330002 001 SWITCH ROCKER 1 1 1 1 21 837100 340000 001 CIRCUIT BREAKER 115V 1 0 1 0 22 837110 340002 RELAY POWER 25A 1 1 1 1 23 857120 108004 001 CAPACITOR 1 MFD 600V 1 1 1 1 24 837910 340000 002 CIRCUIT BREAKER 220V 0 1 0 1 25 160191 MDX 03 200 FUSE 3 2A MDX SB 2 1 2 1 26 160192 MDX 01 600 FUSE 1 6A MDX SB 0 1 0 1 I Interchangeable 0 1 2 3 0 1 2 3 required For earlier production of the System 200 order Circuit Breaker MM82402 black lever 5 3 This Page Left Intentionally Blank 6 REFERENCE DATA Title Drawing Number Page Number INTERCONNECT DIAGRAMS Central Processing Unit PCB 903044 uuu 2 Accessory PCB 905046 LU 2 2 ___ 3 Fixed Disc Controller 903028 1 4 Cartridge Tape Controller PCB 903030 C C 5 CPU Power Supply 903038 nee 6 Parallel Printer Controller 901416 7 SCHEMATIC DIAGRAMS 1500 CPU PCB Top View 903044 8 12 1300 CPU PCB Schematic 903045 9 42 Accessory PCB Top View 903046 43 Accessory PCB Schematic 901434 44 65 16 32K Memory PCB Top View 903020 66 77 16 32K Memory PCB Schematic 903021 67 77 Fixed Disc Controller PCB Top View 903028 78 Fixed Disc Controller PCB Schematic 903029 79 90 Cartridge Tape Controller PCB Top View 903030 91 Cartridge Tape Controller PCB Schematic 903031 92 105 CPU Power Supply View 903038 106 C
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65. 22 I pou AVIdSIG OHCIA 26546 1 1 a ee ee 0025 XIULVW 10 9 HdV L 40 0 7 405552044 8 OT 00 JAINA 2514 0424 I pou 14514 OXIA 002 ueis g 1 5 1 Magnetic Cartridge Drive MTCD Controller 1 CPU Power Supply 1 Memory Power Supply In addition the Processor consists of a Power Distribution Unit PDU front panel PCB and battery The following optional PCBs may be present in the Processor card cage 1 4 or 8 Channe1 Serial I O 1 Binary Synchronous Communications Controller 1 or 2 High Speed Parallel Printer Controller 1 9 track Reel to Reel Magnetic Tape Drive Controller The Processor is housed in the lower half of the Processor Disc Drive Cabinet see Figure 2 8 Four two position switches located on the CPU PCB allow the selection of a particular memory device disc or tape to be loaded into main memory Operator controls and indicators are mounted on the Processor Disc Drive Cabinet front door The function of these controls and indicators are explained in Chapter 2 1 1 2 DISC DRIVE MODEL 2400 The Disc Drive Unit is located in the upper portion of the Processor Disc Drive Cabinet see Figure 2 8 The Disc Drive i
66. 3 9 The relationship between these three 3 levels of software is analogous to the structure of a sentence the letters are the micro instructions the words are the machine level macro instructions and the sentence is the BASIC instruction As previously discussed refer to Section 3 2 1 the CPU recognizes only the machine level macro instructions which it decodes and then in turn executes a specified series of micro instructions to perform a given task Therefore in order to run a BASIC program it is necessary that each BASIC instruction be broken down or compiled into a functionally equivalent series of machine level macro instructions 3 17 5 1 BASIC INSTRUCTION Machine Macro Instruction microinstruction Machine Macro Instruction microinstruction microinstruction microinstruction microinstruction microinstruction Machine Macro Instruction Figure 3 9 Software Language Relationship Many of the internal functions of the System 200 410 are managed by a program called the Operating System The Operating System performs the following functions Execution Scheduling e Peripheral Device Allocation and Control e File Management e Disc Control e Error Management Job Control and Memory Management This Page Left Intentionally Blank CHAPTER 4 MAINTENANCE 4 0 INTRODUCTION This chapter contains information required to perform the recommended preventive maintenance p
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69. ARTRIDGE DRIVE Dimensions Width Depth Height Weight Electrical Voltage Frequency Current Environment Temperature Humidity Cable Lengths Power Signal WORK TABLE DESK OPTIONAL Dimensions Width Depth Height Weight 200 410 SYSTEM Electrical Voltage Frequency Current Power Heat Output Characteristics 15 5 inches 34 3 CM 12 0 inches 30 5 CM 6 0 inches 15 2 CM 16 pounds 7 3 KG 115 230 VAC 60 50 HZ 1 5 0 75A 65 F to 80 F 18 C to 27 C 40 to 60 no condensation 10 feet 3 1 CM 6 feet 1 8 CM 36 0 inches 91 4 CM 32 0 inches 81 3 CM 29 0 inches 73 7 CM 103 pounds 46 7 KG 115 230 VAC 60 50 HZ 14 85 7 425A 1708 VA 5808 BTU HR 2 1 UNPACKING PROCEDURE The following is the recommended procedure to unpack the System 200 410 Processor and peripherals from their shipping containers 11 packages should be opened immediately upon arrival and inventoried for completeness Prior to opening the shipping containers carefully inspect them for signs of damage that may have occurred in shipment Any damage must be noted on the carrier s shipping form NOTIFY the Marketing Office of any shortage or damage immediately so that corrective action can be taken Carefully remove the Processor Printer s MTCD VDT s and cables from their respective shipping containers Save all shipping containers and packing materials in the event that reshipment of the equipment is r
70. Connector Orientation Track Following Adjustment Waveform CPU PCB Sense Switch Settings Tach Gain Adjustment Waveform Processor Front Panel Switches indicators System 200 410 Functional Block Diagram Processor Functional Block Diagram Memory Refresh Cycle Timing Diagram Memory Write Cycle Timing Diagram Memory Read Cycle Timing Diagram Simplified Firmware Flowchart Disc Drive Controller I O Character Data Transfer Timing Diagram Block of Character I O Timing Diagram Software Language Relationship I Ds O V UT 1 1 f ON ON 1 I t I 1 I N PO P2 N Z LIST OF TABLES Physical Specifications Operational Specifications Installation Summary Checklist Installation Specifications Inter Power Supply Resistance Check 3 No Load Power Supply Voltages Loaded Power Supply Voltages Disc Drive Power Supply Voltages Interface Cable Installation i Processor Disc Drive Controls and indicators m 64K Main Memory 2 32K Memory PCB s Address Bit Functions Control Bus Commands P uev tls g ds Preventive Maintenance Samary Recommended BASS Diagnostics 9 e Ic oI E l l I 1 00 N N N E ui CO Q O gt gt IS N N N I ERASKIN EELA RAAE E
71. Disc Drive Cabinet is shown in Figure 2 8 Install CPU PCB P N 903044 in card cage slot 4 see Figure 2 5 Connect the two front panel cables 10 conductor ribbon cable P N 901662 as shown in Figure 2 9 Set Disc Drive Power Switch to the OFF position see Figure 2 4 2 17 gt amp gt S a 79 gt 82 5 O o a 42 lt gt rm o 2 4 gt 5 5 4 S 22 oc 0 5 gt 5 gt 2 C d O a M ee Ow z Processor Card Cage 2 18 Processor Disc Drive Cabinet Major Assemblies Figure 2 8 59148 15454 6 7 4910144 495 16 L S JA LUG 917106 434995 u0 94 3 9 f i 300 3 79 3109 060606 3409 99 4 970506 55922 utd 40139402 424 e 2401380 310N 01324 1 405 E 2 19 2 20 10 11 12 15 14 15 16 17 18 19 Test Point Location Imsert Processor Disc Drive Cabinet line cord into designated wall outlet refer to Section 2 2 1 Set Processor Circuit Breaker to the ON position Se
72. LING 2 30 2 6 2 ALTERNATE DISC LOAD E 2 Set CPU sense switches for Normal Disc Load see Figure 2 13 Press and hold Processor Front Panel Test switch Press and release Processor Front Panel Load switch Release Test switch after ALT LOAD INITIALIZATION is displayed on the VDT Press CR carriage return key in response to ENTRY TO OVERRIDE DEFAULT Optionally set CPU sense switches for Alternate Disc Load see Figure 2 13 and skip Steps 2 and 4 2 6 3 ALTERNATE TAPE LOAD FROM SYSTEM TAPE m 24 Insert System Cartridge into Drive allow tape to rewind Set CPU sense switches for Alternate Tape Load see Figure 2 13 Press and release Processor Front Panel Load switch Enter carriage return key in response to MAKE ENTRY OVERRIDE DEFAULT 2 6 4 WRITING PROTOTYPE SECTORS 1 THRU 15 1 Ensure that the bootstrap is present on the disc track 0 and sectors 1 thru 15 have been formatted Perform Alternate Tape Load refer to Section 2 6 3 Enter 5 followed by carriage return in response to ENTER PROGRAM NAME 2 6 5 FORMATTING DISC Make sure that the bootstrap is present on disc sectors 0 thru 15 If necessary create a backup tape as the reformatting process will destroy all data except track 0 Insert system tape in tape drive Perform Alternate Tape Load refer to Section 2 6 3 Enter followed by
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74. PERATIONAL 5 5 TABLE 1 2 TABLE 1 2 Parameters PROCESSOR 1340 1345 Type Microinstruction Execution Speed 1 microcycle Macroinstruction Execution Speed Main Memory Type Word Length Read Cycle Time Write Cycle Time I O Channels Maximum I O Devices DMA Devices Environmental Temperature Relative Humidity AC Power Voltage Current 141 110 220 V Run 110 V 220 V Start Up 110 V 220 V OPERATIONAL SPECIFICATIONS Characteristics General Purpose 8 bit Microprogrammed 200 Nanoseconds 11 to 355 microcycles Dynamic Semiconductor Random Access 8 data bits plus 1 parity bit 600 nanoseconds 600 nanoseconds 1 32 Disc and Tape 65 F to 80 F 18 C to 27 C 40 to 60 no condensation 110 VAC 60 HZ 1 phase 220 VAC 50 HZ 1 phase 4 2 6 3A 17 8 5A 1 7 TABLE 1 2 OPERATIONAL SPECIFICATIONS continued Parameters DISC DRIVE 2400 Type Number of Discs Heads per Surface Bytes per Track Unformatted Bytes per Track Formatted Number of Cylinders Capacity per Head Formatted Disc Rotational Speed Bit Transfer Rate Byte Transfer Rate Data Bytes per Sector Sectors per Track Maximum Density Inner Cylinder Soft Error Rate Hard Error Rate Single Track Seek Maximum Seek Interface Environmental Temperature Relative Humidity 1 8 Characteristics Fixed Media Movable Head Winchester technology 4 2 17 920
75. PPLY VOLTAGES 1 CPU P S TP3 4 75 V to 5 25 V CPU P S TP2 13 5 V to 16 5 V MEMORY P S TP5 4 75 V to 5 25 V MEMORY P S TP3 11 4 V to 12 6 V 2 3 5 2 Disc Drive Power Supply 1 The Disc Drive Power Supply is located directly behind the Processor Disc Drive Cabinet front door see Figure 2 8 The Disc Drive Power Supply is mounted on hinges that allow it to swing out Open the Processor Disc Drive Cabinet front door loosen the two fasteners securing the Disc Drive Power Supply and swing the Power Supply out Remove connectors P301 and P303 from the Disc Drive Power Supply see Figure 2 10 Figure 2 10 Disc Drive Power Supply Connector Pin Designations Set the Disc Drive Power Switch to the ON position Using a multimeter verify the dc voltages at the Disc Drive supply connector pins listed in Table 2 6 The pin number designations on 4501 and J303 are shown in Figure 2 10 TABLE 2 6 DISC DRIVE POWER SUPPLY VOLTAGES Disc Power Supply Connector Pin Plus Minus J301 1 J301 2 44 90 V to 5 10 V J301 5 J301 6 5 10 V to 5 30 V J303 2 J303 1 14 70 to 15 30 J303 4 14 70 V to 15 30 V J303 6 14 85 V to 15 15 V J303 8 14 70 to 15 30 Set Processor Front Panel Power Switch to the OFF position Set Processor Service Switch to the OFF position Set Processor Circuit Breaker to the OFF position Reconnect Disc Drive dc power connectors P301 and P303 t
76. PU Power Supply Schematic 903039 107 Memory Power Supply PCB Top View 903034 108 Memory Power Supply PCB Schematic 903035 109 110 PDU Processor Top View Rev B A AX5 902670 111 113 115 PDU Processor Schematic Rev B 5 902670 112 114 116 UNOILN3QI Su311081NO FHL 11 W31NINd HOV3 03811038 SI 4337171031405 31 9 435 V lt 310N 138 39031 0 342 3903 1M0N32V 138 Asna Asna 5 5 193135 138 8 LfidNI 8 VIVO LNdNI 133 2 VIYA 1 dNI 1 VIVO 104 1 VIVO I dNI LNdNI VIVO LNdNI LAdNI viva LAdNI viva LNdNI LNdNI IndNI VIVO LAdNI VIVO LNdNI 138 380815 VlVO 390815 VlVG 134 134 138 134 134 133 MANN m u HOLIMS 134 5 AldW3 33444 331 184 03345 WNIOIW annous 0901 LndNI 9 T 1N03 N0039 318V1IVAV 104 9 13538 3NIT 40 QN3 10 0N0039 390815 VlvG 1 9 annoud L 118 wlvd LAdNI 041039 9 118 VIVO 1 ANNOYS 119 Viva 9 v 118 VIVO LAdNI ANNOYS 119 VIVO LNdNI annoys 118 VlVO annoud I 118 VIVO gt 91 M31NIMd 03345 ASN ION PLOTS Ss eee ea url Se
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79. System 200 410 BFISD 8035 Service Manual Basic Four 5 Information Systems The information contained herein is proprietary to and considered a trade secret of Management Assistance Inc All rights reserved No part of this publication may be reproduced recorded or stored in a retrieval system or transmitted in any form or by any means whether electronic mechanical photographic or otherwise without prior written permission of the Basic Four Information Systems Division of Management Assistance Inc All Rights Reserved BFISD 8035 Copyright 1981 by Management Assistance Inc All specifications are subject to change without notice Basic Four and MAI are registered trademarks of Management Assistance Inc IN United America Basic Four Information Systems Division Management Assistance Inc 14101 Myford Road Tustin California 92680 714 731 5100 TABLE OF CONTENTS Page CHAPTER 1 INTRODUCTION 1 0 Purpose 1 1 1 1 Physical D seription Table 1 1 1 1 1 Processor Model 1340 1345 1 2 1 1 2 Disc Drive Model 2400 1 4 1 1 3 Video Display Terminal Model 7250 1 5 1 1 4 Magnetic Tape Cartridge Drive Model 6400 1 5 1 1 5 Matrix Printer Model 3200 des 1 6 142 Operational Table 1 21 1 7 1 3 Options 1 11 1 3 1 9 Track 800 Reels to Reel Magnetic Tape Drive 1 11 1 3 2 4 or 8 1 Terminal Controller
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81. ach serial device VDT and Remote Printer is assigned a terminal number as specified by the operating system software The remote printer s is always the last terminal Example A System 410 with 4 VDT s and 1 remote printer is configured as follows VDT s are terminals 0 thru 3 and the remote printer is terminal 4 The following lists the PCB Connector for each terminal PCB Connector Serial Device Assignment Accessory PCB J2 Terminal 0 Accessory PCB J4 Terminal 1 4 8 Way PCB J Terminal 2 4 or 8 Way PCB J1 Terminal 3 4 or 8 Way PCB J2 Terminal 4 4 or 8 Way PCB J3 Terminal 5 8 Way PCB J4 Terminal 6 8 Way PCB 75 Terminal 7 8 Way PCB J6 Terminal 8 8 Way PCB J7 Terminal 9 Fault Lamp Disc Ready Lamp Card Cage 12 Red Interface Seen PCB 03 PCB Connector pin 1 k gt Fan T VFO PCB DET DCER R W PCB p di 7 Spindle Grounding Head Actuator Head Lock shown unlocked position Spindle Lock shown in unlocked position Media Power Switch Fuse R32 Power Distribution Unit PDU Motor Note See Table 2 8 for description of numbered callouts 12 and 13 Figure 2 4 D
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83. al 110 VAC 220 VAC Matrix Printer 110 VAC 220 VAC Magnetic Tape 110 VAC Cartridge Drive 220 VAC 2 2 2 POWER RECEPTACLES Current 15 continuous 30A power up surge for 15 seconds 7 5A continuous 15A power up for 15 seconds 1 1A 0 56A 5 0A 2 5A 1 5 75 The 110 volts Processor Disc Drive Cabinet requires a Hubble 4710 power receptacle or equivalent twist lock type receptacle on a dedicated circuit breaker The Hubble 4710 power receptacle or equivalent must be wired as shown in Figure 2 1 The VDT Printer and MTCD require a standard 2 pole 3 wire outlet The VDT Printer and MTCD may share a single circuit breaker of the proper current rating Verify that the ac outlets are wired as shown in Figure 2 2 2 6 Black Hot White Neutral Green Earth Figure 2 1 Processor Disc Drive 110 VAC Outlet Wiring White Black Neutral Hot Green Earth Figure 2 2 Peripheral 110 VAC Outlet Wiring 2 2 3 ENVIRONMENTAL REQUIREMENTS 2 2 3 1 Temperature It is recommended that the System 200 410 be operated in a room where the ambient temperature is between 65 F to 80 F 18 C to 27 ve The exhaust heat of the System 200 410 is 5 808 BTU Hour 2 2 3 2 Humidity It is recommended that the System 200 410 be operated in a room where the relative humidity is maintained between 40 to 60 non condensating High humidity can cause printer paper handling problems Low h
84. ally store information that is less urgently required by the CPU Programs when ready to be run are transferred from the Disc Drive to the Main Memory where they are read and executed by the CPU Between the CPU and the Disc Drive is the Disc Drive I O Controller The Disc Drive I O Controller performs error checking formatting translation and timing of information transferred between the CPU and the Disc Drive The Controller also performs interrupt processing stores status information and controls Direct Memory Access DMA operations 3 1 4 MAGNETIC TAPE CARTRIDGE DRIVE MODEL 6400 The Magnetic Tape Cartridge Drive provides a large off line storage area for programs and data see Figure 3 1 The main function of the MTCD is to provide backup storage in the event tne programs and or data on the Disc Drive are lost Between the CPU and the MTCD is the MTCD 1 0 Controller which decodes CPU commands monitors MTCD operational status generates Tape Drive control and timing Signals formats information written on tape initiates interrupts performs error checking and controls DMA operations 3 1 5 MATRIX PRINTER MODEL 3200 The Printer provides a hard copy record of the program and or data processed by the program see Figure 3 1 Between the Printer and CPU is a serial 1 0 Controller channel or a parallel 1 0 Controller remote or local printer operation respectively In either case the 1 0 Controller issues t
85. anded by the addition of Printers and Video Display Terminals VDT as well as increased Disc Drive and Main Memory capacity Figure 1 1 illustrates the typical configuration for a System 200 410 computer TABLE 1 1 PHYSICAL SPECIFICATIONS Parameter PROCESSOR DISC DRIVE CABINET Height Width Depth Weight VIDEO DISPLAY TERMINAL Height Width Depth Weight MAGNETIC TAPE CARTRIDGE DRIVE 6400 Height Width Depth Weight MATRIX PRINTER 3200 Height Width Depth Weight 1 1 1 PROCESSOR MODEL 1340 1345 Characteristics 29 0 inches 73 7 CM 22 5 inches 57 2 CM 32 0 inches 81 3 CM 275 pounds 125 KG 12 5 inches 31 8 CM 21 5 inches 54 6 CM 18 3 inches 46 4 CM 25 pounds 11 4 KG 6 0 inches 15 2 CM 13 5 inches 34 3 CM 12 0 inches 30 5 CM 18 8 pounds 8 5 KG 37 0 inches 94 0 CM 26 0 inches 66 0 CM 22 0 inches 55 9 CM 100 pounds 45 4 KG The Processor is made up of a card cage and backplane which contains at minimum the following PCBs 1 2 1 Central Processing Unit CPU 1 2 Channe1 Serial I O Accessory PCB 1 or 2 Dynamic Semiconductor Memory 1 Disc Drive Controller uorjeungrguo 891441 orv 00z ueis s 0026 42811 00 9 FAIXA 1 1 SYST XO 08461 05542044 8 0072 JAINA 2514 VIGAN 04
86. bytes 16 384 bytes 349 5 718 016 bytes 2964 RPM 2 5 7 08 x 10 bits second 916 9 x 107 bytes per second 1 024 bytes 16 sectors 5 636 bits per square inch 1 per 1010 bits 1 per 1017 bits 10 1077 seconds 75 1077 seconds Storage Module Interface using TTL compatible line drivers and receivers on all signals except clock and data 65 F to 80 F 18 C to 27 40 to 60 no condensation TABLE 1 2 OPERATIONAL SPECIFICATIONS continued Parameters DISC DRIVE 2400 AC Power Requirements DC Power Requirements 5 0 VDC 5 2 VDC 15 0 VDC 15 0 VDC MAGNETIC TAPE CARTRIDGE DRIVE 6400 Type Head Recording Density Tape 5 4 Data Transfer Rate Interface Tape Cartridge Tape Length Tape Width Storage Capacity Environmental Temperature Relative Humidity Characteristics 110 VAC 60 HZ 1 phase 220 VAC 50 HZ 1 phase 6 5A 4 0A 4 0A 4 0A Magnetic Tape Cartridge 1 or 4 track dual gap read write erase 6400 bits per inch 4 track version 30 inches per second Read Write 90 inches per second Fast Forward Reverse Search and Rewind 24 x 10 bytes per second nominal TTL compatible line drivers and receivers 300 feet 91 4 M 0 25 inch 0 64 CM 11 5 x 109 bytes unformatted 4 track version 65 F to 80 F 18 C to 27 C 40 to 60 no condensation TABLE 1 2 OPERATIONAL 5 5 continued Parameters
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88. e disconnect the suspected peripheral from the system and operate it off line to isolate the problem or to confirm proper operation 7 Effective troubleshooting in all situations can be accomplished from a good working khowledge of the equipment s Theory of Operation Reference the Service Manual s Functional Description section to help gain an understanding of circuit functions and their locations within the equipment 4 2 8 When replacing a printed circuit board appears to solve the problem reinstall the suspected PCB to verify the problem returns and was not caused by bad contacts or poor seating 9 After it appears that the suspected problem has been solved perform applicable diagnostic programs before placing the system back in its normal operation 4 2 3 DIAGNOSTIC TESTS The following paragraphs list the recommended diagnostic programs functions and implementation 4 2 5 1 CPU and VDT Boot Checker Diagnostic This is short machine language routine entered manually at the keyboard to check that the basic communication functions between the VDT CPU and memory are operational This program should be used as a fault isolation tool when the machine level refer to Section 4 2 3 2 and BASS refer to Section 4 2 3 3 diagnostics cannot be run Perform the CPU and VDT boot checker diagnostic as follows 1 On VDT 0 set mode switch rear Panel to half H duplex 2 Set CPU sense switches for VDT bootstrap load see Figu
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90. e computer components to be spaced far enough apart to allow access for maintenance refer to Table 2 2 A typical arrangement of the System 200 410 components is shown in Figure 2 3 2 3 SYSTEM INSTALLATION 2 3 1 TOOLS The following tools are required to perform the installation procedures contained in this document 1 Digital Multimeter 3 digit 1 10 Foot Measuring Tape 2 Common Screwdriver 1 Oscilloscope Dual Trace 1 Adjusting Tool Slotted 2 Disc Drive PCB Extender MM259010 2 3 2 RELEASING DISC DRIVE LOCKING DEVICES NOTE Prior to applying power to the Processor Disc Drive Cabinet it is important that these locking devices are released 14 545 441 6 7 9 1 9 235 a ERR 181 021 PE i 493ULJd 9ALJQ 2510 PES 4058592044 89 98 2 10 2 3 2 1 Head Actuator Lock Release the Disc Drive Head Actuator Lock see Figure 2 4 by first removing the Processor Disc Drive Cabinet top cover then rotating the Head Actuator Lock clockwise until the locking arm rests against the disc housing 2 3 2 2 Spindle Lock Release and reposition the Disc Drive Spindle Lock mechanism located on the underside of the Disc Drive see Figure 2 4 by loosening the two mounting screws and sliding the locking plate outward until the grounding head rests centered on the spindle Retighten the two mounting screws 2 3 3 SWITCH SETTINGS E
91. equired at a later date i Insure that the System is complete Compare the items sent with the Shipping List If it is found that the system is incomplete make a list of the missing items and report it to your Marketing Office Visually inspect all items for shipping damage Pay particular attention to inspect the cables and connectors for pinched wires and or poor electrical connections Report any damaged parts to your Marketing Office Remove the Processor Disc Drive Cabinet top cover and remove the layer of foam on the top of the Disc Drive For reshipment replace the layer of foam on the top of the Disc Drive 2 2 PREINSTALLATION CHECKS 2 2 1 AC POWER REQUIREMENTS It is important that the System 200 410 receive proper ac power Therefore prior to selecting a location to install the system check that The ac power outlet s are the proper voltage 110 volts ac 60 Hertz or 220 volts ac 50 Hertz as applicable and near enough to the equipment so that power extension cables are not necessary The ac line is not subject to voltage variations greater than 10 or frequency variations greater than 0 2 The ac line is not shared by devices that cause large transients examples air conditioners heaters welding equipment and other equipment with large motors e The line can meet the following system current requirement Component Voltage Processor Disc Drive 110 VAC single line 220 VAC Video Display Termin
92. er commands Program controlled transfers character at a time data Block of character transfers some controllers are not capable of block of character transfers Two 2 types of information is sent to the CPU by the Controller on the Input Data bus Controller status e Answer bytes in response to a CPU command Block of character transfers some controllers are not capable of block of character transfers The required signals and their time relationship to perform character I O transfer and block of character I O transfer respectively are shown in Figures 3 7 and 3 8 3 16 AND DEVICE ADDRES HERE 067 Tutu 1 20015 eoonscc CONTROL OUTPUT scons DATA ID CONTROLLER RETURN BYTE muere TIMING HODE AMD DEVICE ADDRESS TRAN SFEL HERE TRANSFER HERE Ru 5 Pone ma e CONTROL DATA DOT CB ooTPUT TUM IMG Boose gt Figure 5 7 I O Character Data Transfer Timing Diagram BLOCK REQUE 8 06 1 56 20 4 pSEC max 65 4 BLOCK OWLEGE DATA 400 Sec ve EARS DATA Hp LOA7 THRO LOGS ADDRESS TRANS ree DATA IN DIKX fL
93. essor 1 1 4 MAGNETIC TAPE CARTRIDGE DRIVE MODEL 6400 The Magnetic Tape Cartridge Drive MTCD consists of a drive motor four track read write erase head four 4 separate printed circuit boards one 1 interconnect board and a power supply which are contained in a single enclosure The MTCD utilizes Basic Four Model 6903 tape cartridges with 1 4 inch wide tape 1 5 The MTCD is connected to a Magnetic Tape Cartridge Drive Controller PCB located in the Processor card cage by a single ribbon cable 1 1 5 MATRIX PRINTER MODEL 3200 The Matrix Printer consists of a paper feed mechanism print head mechanism internal control electronics and a power supply which are contained in a single enclosure The Printer will accept forms up to 15 inches wide The Matrix Printer is supplied in two versions Parallel interface local operation and Serial interface remote operation Both versions can operate at speeds of 80 120 or 160 characters per second The Parallel interface version is connected to a Printer Controller PCB located in the Processor card cage Interconnection is made via a ribbon cable The Serial interface version is directly connected to the Accessory PCB or optional 4 or 8 Way Terminal Controller via a cable 1 000 feet maximum length or connected by telephone lines via modems Matrix Printer operator controls include On Off Line switch Power switch Test switch and Top of Forms switch 1 6 1 2 O
94. he specifications for the BSC Controller e Modem Rates 20 000 bits second maximum e Modem Interface RS 232C half and full duplex e Transmission Codes EBCDIC or Transparent EBCDIC Data Link Discipline IBM Binary Synchronous Communication e Synchronization Modem supplied clock 1 3 4 PARALLEL LOCAL PRINTER CONTROLLER This option allows an additional high or medium speed Parallel Interface Printer to be tied to the System 200 410 Parallel Printers cannot be located more than 30 feet from the Processor as cable lengths must be restricted The Parallel Printer Controller is located in the Processor card cage see Figure 2 5 The Controller provides two separate interfaces although only one may be on line with the system One interface connector P2 is used with Basic Four s High Speed Printers e g Model 3600 the other interface connector P3 is used with Basic Four s Medium Speed Printers e g Model 3100 3200 3510 The following lists the specifications for the Parallel Printer Controller e Number of Columns characters per Print Line Medium Speed Printer Up to 132 characters per line of print High Speed Printer Up to 132 characters per line of print 1 13 Maximum Output Data Rate Medium Speed Printer High Speed Printer Input Power Requirements Environmental Temperature Relative Humidity Circuit Types 132 characters per second 150 or 300 lines per minute 300 or 600 lines per minute
95. iming and control signals to the Printer and CPU interprets and sends Printer status information and interrupt commands to the CPU The serial I O Controller channel utilizes standard RS 232C interface protocol when communicating with the Printer 3 2 PROCESSOR FUNCTIONAL DESCRIPTION Within the dotted lines of Figure 3 2 is an illustrated functional block diagram of the Processor The Processor consists of the following devices Central Processing Unit CPU Main Memory e Disc Drive Controller e Magnetic Tape Cartridge Drive MTCD Controller 2 Channel Serial Interface Accessory PCB e Optional Controllers Communication between the CPU and the rest of the Processor devices is accomplished by various busses as shown in Figure 3 2 Each bus handles information of a particular type 39qdiuluvo O9IL3NOVW 8 YOOTG Ieuor3ounj 55 77 lt 3 5 LIA 16 195 H3LNIHd 8 9141 4 A 80553304 l 81894 W 508 ssauaqv KHON3W 508 VLIVA 10111402 j m 82d 311081 H3110H1NO2 H3110H1NO2 92 1VNINH31L 2 3dV 1 2 1 810 TVNOILdGO 39QIHLHVD 161005 5 viva Sna ViVa For reference purposes
96. inal s e Verify that the baud rate switch located on the VDT rear panel is set to 9600 baud e Verify that the duplex switch located on the VDT rear panel is set to F full duplex 2 3 4 INTER POWER SUPPLY RESISTANCE CHECK To ensure that the Processor power supplies not short circuited perform the following procedure prior to applying power to the system Figure 2 7 PLOX 24142 3 5 Bytes Sector Disc Drive Sectors Track Switch Settings PLOX PCB Remove the Processor Disc Drive Cabinet rear panel and extract all PCB s except memory power supply and CPU power supply from the card cage backplane connectors See Figure 2 5 to identify the location of each PCB With a multimeter set to the R x 1 resistance range check that short circuits do not exist between any of the power supply outputs as shown in Table 2 3 Test all possible combinations at the test points indicated in Table 2 3 TABLE 2 3 INTER POWER SUPPLY RESISTANCE CHECK Memory P S TP3 2 3 5 POWER SUPPLY OUTPUT CHECK N The Processor Service Switch and Circuit Breaker must be in the OFF position whenever a PCB or cable is inserted or extracted from a connector otherwise hardware damage and or program errors may result CPU Memory Power Supply Connect both battery wires to the battery white wire to minus black wire to plus The location of the battery within the Processor
97. ion switches located on the Disc Drive PLOX PCB control the bytes sector 1118 and sectors track 16 Verify that the switches are set as shown in Figure 2 7 Remove the Processor Disc Drive Cabinet top cover to gain access to the Disc Drive card cage jim pue suor3 e201 eS PIE 106692014 6 2 08 4 01 pue 6 5300 1 0114 4959 40 8 2 9416 4 2956 930N LL nay 8 53015 ut aq 55 434 501140 1015 pue x 44 dd 491104300 2510 9 01380 LI x89d 4055922 6 824 4911043409 49148144 OL 934 043 v 4911043405 SUOLZEDLUNWWOD 6 16401340 KA0U9W x 49 104300 8 40 p 8 824 2 824 4911043409 0211 Z 4 uamog v S 9 1 8 6 OI TI el 9140 2510 n 1 mw um Ln dayeoug 1113419 6 9514 9514 2 uo31Ms apas OD JL dh rh dh dh gh dh dh d J MOd 21 UOLINGLUYSLG 2 14 a ff select particular baud rate set the corresponding switch position to ON Set all other switch positions to OFF switch shown is set to 9600 baud 5 9600 Baud 4800 Baud 2400 Baud 1200 Baud 600 Baud 300 Baud 4 150 Baud a 110 Baud Figure 2 6 Baud Rate Switch Settings 2 3 3 6 Video Display Term
98. isc Drive Components Top View Prior to system power up verify that system switches are set on the following PCBs 2 5 5 1 Accessory PCB e Verify that the Processor Accessory PCB see Figure 2 5 switch 581 VDT port baud rate is set to the 9600 baud position see Figure 2 6 e Verify that the Processor Accessory PCB SW2 is set to the correct baud rate for the device assigned 2400 for Serial Printer 9600 for VDT see Figure 2 6 2 3 3 2 4 or 8 Way Controller PCB Systems containing multiple VDTs and Serial Printers require a 4 or 8 Way Controller PCB see Figure 2 5 Set the baud rate switch for each channel to equal the corresponding VDT or Serial Printer s specified baud rate Switch settings are shown in Figure 2 6 2 3 3 3 Memory PCB s Verify that the memory select switch S1 on each of the two memory PCB s is set so that a contiguous block of memory is addressed beginning at location 0 A chart is printed on each memory module listing the switch settings 2 3 3 4 Disc Drive Interface PCB P N 24201A One eight position switch controls the device address read only mode and diagnostic Verify that the switch 15 set as follows switch position 1 thru 3 ON 4 thru 7 OFF 8 ON See Figure 2 4 for the location of the Interface PCB within the Disc Drive card cage Remove the Processor Disc Drive Cabinet top cover to gain access to the Disc Drive card cage 2 3 3 5 Disc Drive PLOX PCB P N 24142 Three eight posit
99. m is made up of many micro instructions arranged in subroutines The micro instructions produce the most fundamental actions of the CPU e g move the contents of a register to a bus The subroutines are groups of micro instructions that perform commonly required data manipulations A group of these micro program subroutines is the equivalent of a machine level macro instruction i e when the CPU receives a particular machine level macro instruction a corresponding sequence of micro program subroutines is executed to produce the action specified by the machine level macro instruction The advantage of the micro programmed CPU is flexibility and efficiency By altering the micro program the CPU can be made to act in an entirely different manner A more detailed description of the CPU hardware and its operation can be found in the 1300 CPU Technical Manual Document No SM 1020 and M1300 Series CPU Organization and Description Reference Manual 3 2 2 MAIN MEMORY Main Memory functions as the storage medium for programs and data currently being executed upon by the CPU see Figure 3 2 Main Memory may be organized up to 96k words or nine 9 bits in length Eight 8 bits of each word represents data and the remaining bit is the parity bit for the word an LED on the memory PCB illuminates when a parity error has occurred Because the Main Memory is a dynamic semiconductor type each cell 1 bit cell must be refreshed every
100. nce one by one The results of the process are written into Main Memory to be stored or sent to an I O Controller which transfers the results to its associated peripheral device 8 euor3ounj 017 002 545 814 5 O I 8 2514 TVNOILdO n SI T 013103 0 1 1 1 55 00 4 LOA 3 2 3 1 2 VIDEO DISPLAY TERMINAL MODEL 7250 The Video Display Terminal VDT provides a two way interface between the CPU and the operator see Figure 3 1 The operator enters commands programs and data at the VDT keyboard The CPU returns characters for display and under program control the results of processed data and requests for operator action Between the CPU and the VDT is a serial 1 0 Controller channel that functions to translate format and insure that the information travelling between the CPU and the VDT is sent and received at the proper time The serial 1 0 Controller channel utilizes standard RS 232C interface protocol when communicating with the VDT 3 1 3 DISC DRIVE MODEL 2400 The Disc Drive provides the CPU with a large storage area for programs and data see Figure 3 1 Both the Disc Drive and the Main Memory provide information storage However because the Disc Drive accesses the information stored at a much slower rate than Main Memory the Disc Drive will gener
101. o ENTER PROGRAM NAME Enter in response to ENTER NAME or BASS Insert a Certified Tape Cartridge into Tape Drive Do not use a System Tape or Zero Recovery Tape Perform a full backup by selecting Option 1 or a selective backup using Option 2 CHAPTER 3 THEORY OF OPERATION 3 0 INTRODUCTION This chapter provides a brief functional description of the System 200 410 computer system It is intended as an introduction to fundamental concepts and system relationships More detailed information about particular parts of the system e g CPU Printer Disc Drive can be found in their respective Service Manual or Technical Manual 3 1 FUNCTIONAL DESCRIPTION A functional block diagram of the System 200 410 is shown in Figure 3 1 A more detailed functional description of the processor can be found at the beginning of Section 3 2 The following paragraphs describe the basic function s of each block and its relationship to the rest of the system 3 1 1 PROCESSOR MODEL 1340 1345 The Processor consists of a Central Processing Unit CPU Main Memory and Input Output 1 0 Controllers The CPU functions as the central control point to initiate all actions within the system as specified by the program The Main Memory stores the program until commanded by the CPU to transfer a small portion of the program called an instruction to the CPU to be processed instructions are processed in seque
102. o the Disc Drive Power Supply 2 3 6 CABLE INTERCONNECTION Install Verify system interface cables as described in the following procedure 2 22 1 Position the System 200 410 components in the desired locations refer to Section 2 3 Install all cables as listed in Table 2 7 The location of connectors within the system are identified in Figure 2 9 It is important that cables and connectors are properly identified and connected pin to pin prior to applying power to the Processor and associated peripherals otherwise hardware damage and or program errors may result A simple method to ensure that cables are properly connected is to align the arrow marked on the cable connector to the arrow marked on the mating connector An illustration of a properly connected cable is shown in Figure 2 11 TABLE 2 7 INTERFACE CABLE INSTALLATION Front panel 21 10 Conductor Ribbon 901662 CPU PCB P2 Front Panel J3 10 Conductor Ribbon 901662 CPU P S P3 CPU PCB P3 50 Conductor Ribbon 901490 Accessory PCB J3 Accessory PCB J4 4 Conductor Cable 902625 or 906041 Printer serial and or Printer Cont PCB P3 26 Conductor 13 tw pr 902626 or 906305 902625 or 4 Conductor Cable 906041555 VDT Main 1 0 Triple Connector 902687 Disc Cont PCB P3 Command Bus 50 Conductor Ribbon Printer 11 1 Accessory PCB J2
103. ocessor CIRCUIT BREAKER to OFF 4 Unplug Processor ac line cord from wall 5 Unplug Disc Drive ac line cord from Processor Power Distribution Unit PDU 6 Remove Processor Disc Drive Cabinet top rear and side covers 7 Remove Disc Drive interface cable strain relief strap located at the front of the Disc Drive the strap is secured with three screws 8 Unplug the two 2 Disc Drive cables at the Disc Drive PCB connectors 9 Remove the Disc Drive PDU top cover and remove the three 3 Power Supply ac wires Barrier Strip TB 100 413 414 15 and the three 3 Power Supply ac wires Barrier Strip TB 100 6 7 10 10 Remove the 10 pin dc power cable connector located inside the Disc Drive PDU 11 12 13 14 15 16 17 Rotate the head actuator lock counter clockwise to the locked position refer to Section 2 3 2 1 Set the spindle lock mechanism to th locked position refer to Section 2 5 2 2 Remove the three 3 1 4 inch nuts use a 7 16 inch wrench that secure the Disc Drive to the cabinet frame Lifting the Disc Drive out of the cabinet requires two 2 persons the Disc Drive weighs 85 pounds With one person at each side of the Disc Drive grasp the base casting firmly being careful not to damage the Disc Drive backplane pins and lift the Disc Drive out of the cabinet Set the Disc Drive down gently being careful not to damage the Motor Brake Remove the three 3 rubber shock moun
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106. re 2 12 3 Press VDT CLEAR key 4 Press and release Processor LOAD switch 5 Type in the following hexadecimal numbers 02000487FFBFEFAF48390097D000491AFD1FF500 6 Press VDT motor bar IV 7 Type the following hexadecimal numbers 0200 then press motor bar IV 8 The VDT will display 0123456789 2 indicating the diagnostic ran sucessfully 4 2 3 2 Machine Language Diagnostics CPU Diagnostic CPU This diagnostic checks that the CPU and its firmware operate properly by performing each of the machine language instructions and verifying that the instruction s was performed correctly 4 3 In general the program 15 self explanatory The Service Representative will be prompted to perform the required tasks Run CPU as follows 1 Set CPU sense switches for Fixed Media Disc Alternate Load see Figure 2 12 2 Set VDT mode switch rear panel to full F duplex 3 Press and release Processor Load switch 4 The VDT will display the proprietary notice then BASS INITIALIZATION MAKE ENTRY OVERRIDE DEFAULT 5 Within 10 seconds the operator will press the carriage return key on the VDT 6 The operator will type then press the carriage return key in response to ENTER PROGRAM 7 The operator will be asked to DEPRESS CONSOLE INTERRUPT to enable various test functions within the diagnostic To enable a particular test function the operator must press the Processor Front Panel CLEAR s
107. rive PCB extender MM 259010 to Disc Drive VSER PCB see Figure 2 4 Connect Oscilloscope Channel B to VSER PCB connector pin R2 Set Oscilloscope Trigger Source to Channel A minus slope Set Processor Front Panel Power switch to ON Observe that Disc Ready lamp see Figure 2 4 is illuminated Observe Oscilloscope Channel A and verify peaks B and C see Figure 2 12 are of equal amplitude If peaks B and C are not of equal amplitude adjust R32 on PAMP PCB only if a Zero Recovery Tape is readily available Observe Oscilloscope Channel B and verify that zero volts 10 5 volts level is present If R32 on PAMP PCB was adjusted perform the following operations a Zero Recovery Procedure b Write Prototype Sectors 1 thru 15 refer to Section 2 6 4 c Format Disc refer to Section 2 6 5 4 Install System Software refer to Section 2 6 6 Equal Amplitude Figure 2 12 Track Following Adjustment Waveform 2 25 2 3 8 2 Tach Gain Adjustment It is recommended that the Disc Drive Tach Gain be adjusted when the system is installed The Tach Gain is adjusted such that the average time to complete a seek between cylinders 000 and 105 is between 31 0 and 31 3 milliseconds Perform the Tach Gain Adjustment after first performing Track Following Adjustment refer to Section 2 3 8 1 The Tach Gain is adjusted as follows 1 2 Set Processor Front Panel Power Switch to OFF Remove Processor Disc Drive Cabinet top
108. rocedures adjustments and to aid the Service Representative in corrective maintenance of the System 200 410 4 1 PREVENTIVE MAINTENANCE Preventive maintenance consists of performing the recommended inspection cleaning lubrication adjustments etc at regular intervals to prevent equipment failure Due to the electronic nature of the equipment preventive maintenance tasks consume little of the Service Representative s time and are well worth the effort in terms of increasing equipment reliability System 200 410 preventive maintenance is summarized in Table 4 1 TABLE 4 1 PREVENTIVE MAINTENACE SUMMARY Frequency This manual 2 3 5 2400 Service Manual Equipment 2 months Verify Adjust power supply voltages clean dust Processor Disc Drive 2 months Verify Adjust power supply voltages inspect belt clean dust MTCD 6400 Service Manual 2 months Verify Adjust P S clean head and capstan clean dust Printer 2 months 3200 Service Manual Inspect Adjust tractor belts lube lead screw and carriage guide rods clean chaf and dust VDT 2 months Verify Adjust P S clean dust VDT Service Manual 2 months is nominal Frequent Infrequent use and mild harsh environmental conditions require P M at shorter longer intervals 4 2 MAINTENANCE Corrective maintenance consists of rectifying unexpected equipment failures This section is designed to provide a logical
109. s diagonal Center 900 TV lines at 40 feet Corners 750 TV lines at 40 feet Standard typewriter upper case letters only Standard 10 key adding machine Special control keys 5 x 7 dot matrix 0 119 inch high x 0 082 inch wide Serial RS 232C full duplex asynchronous 9600 or 2400 baud standard 65 F to 80 F 18 C to 27 40 to 60 no condensation 110 VAC 60 HZ 1 phase 1 1A 220 VAC 50 HZ 1 phase 55A The following paragraphs briefly describe the options presently available for the System 200 410 1 3 1 9 800 BPI REEL TO REEL MAGNETIC TAPE DRIVE The Reel to Reel Magnetic Tape Drive provides a means of storing large quantities of data These tape units can be used in applications where the shorter data access time of the disc memory is not needed 1 11 The Reel to Reel Magnetic Tape Drive requires a special Tape Drive 1 0 Controller located in the Processor card cage The following is a list of specifications for the Reel to Reel Tape Drive Recording Mode Data Density Tape Velocity Data Transfer Rate Rewind Velocity Compatibility Tape Reel Size 9 track NRZI 800 bits per inch 12 5 inches per second 2 500 to 10 000 characters per second 50 inches per second 9 track ASCII or 7 track industry compatible format Computer grade 0 5 inch wide 1 5 mil thick 7 inch diameter IBM hub 1 3 2 4 OR 8 CHANNEL TERMINAL
110. s a fixed media type i e the discs are not removable The four 4 discs and head Setiat are mounted on a metal platform sealed in a plastic housing This sealed unit referred to as the Deck Plate Assembly may only be opened at the factory when maintenance is necessary The Deck Plate Assembly motor and PDU are attached to a single base casting 1 4 The Disc Drive card cage which contains nine 9 PCBs is mounted to the Deck Plate Assembly Access to these PCBs is gained by lifting off the Processor Disc Drive cabinet top cover The DC power is supplied from a physically separate power supply located behind the Processor in the lower portion of the Processor Disc Drive Cabinet see Figure 2 8 The Disc Drive power supply AC input must be connected to the Processor PDU to insure proper power on off sequencing The Disc Drive is connected to a Disc Drive Controller PCB located in the Processor card cage via two ribbon cables 1 1 5 VIDEO DISPLAY TERMINAL MODEL 7250 The Video Display Terminal VDT is comprised of a standard typewriter keyboard 10 numeric keyboard Cathode Ray Tube CRT display and supplementary electronic circuitry contained in a single enclosure Data communication between the VDT and Processor is by full duplex asynchronous communication lines which are directly connected via a cable or via telephone lines When directly connected the VDT can be located up to 1 000 feet away from the Proc
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112. ster compiler gt 40K memory and System 410 computers enter and run the Cylinder 000 and 105 Seek BASIC program as follows a Set CPU PCB Sense switch for Fixed Media Disc System Load see Figure 2 13 b Press and release Processor Front Panel Load switch c Enter the following 10 LET X 4 for 25 MB disc or 10 LET X 8 for 50 MB disc or 10 LET X 12 for 75 MB disc 20 DIM A 1024 50 GET O 1 A 40 GET O X 16 105 A 50 GOTO 30 RUN d Observe that the disc heads are alternating between Cylinders 000 and 105 2 27 9 Observe Oscilloscope Channel A READY if necessary adjust potentiometer R54 located on VSER PCB such that READY is false high for 31 0 to 31 3 milliseconds see Figure 2 14 10 Observe Oscilloscope Channels A and B and verify that POS POSITION ERROR VOLTAGE Channel B is less than 3 volts peak to peak when READY is true low see Figure 2 14 FH Channel B 0 volts POS POSITION Less than 1 54 B B 7 V is true L es 0 volts Figure 2 14 Tach Gain Adjustment Waveform 2 4 SYSTEM CHECK OUT Before running diagnostics insure that the system is configured prop rly System configuration is verified by running utility Program Z This program will list the VDT s Printers etc that the operating system software is programmed to manage System Check Out is accomplished by performing the diagnos
113. t Printer Function Burn In Test sm 17 0 2 0 9 0 11 55 diagnostics except 0 11 and 5 12 Cartridge Diagnostics selected as follows 1 2 Set CPU sense switches for Fixed Media Disc System Load see Figure 2 12 Press and release Processor Load switch Type in response to DO YOU WANT SPOOLING Type RUN BASS in response to READY Enter date and time as requested Select B 4 SERVICE SYSTEM Select the BASS programs listed in Table 4 2 except 5 M11 and M12 Enable and reset error file as requested by diagnostic At the completion of all selected BASS diagnostics the error file will be displayed Tape Cartridge diagnostics 5 M11 and 5 M12 are selected as follows 1 2 10 Set CPU sense switches for Fixed Media Disc Alternate Load see Figure 2 12 Insert scratch tape media into tape drive Press and release Processor LOAD switch The VDT will display ENTRY TO OVERRIDE DEFAULT within 10 seconds press the VDT space bar Type followed by carriage return key in response to ENTER PROGRAM NAME Type BASS in response to ENTER PROGRAM NAME or BASS Enter the date and time as requested Select B 4 SERVICE SYSTEM Select 5 M11 and or M12 Enable and reset error file as requested by diagnostic At the completion of the diagnostic s the error file will be displayed 4 2 3 4 System Po
114. t Processor Service Switch to the ON position Set Processor Front Panel Power Switch to the ON position Using a multimeter set to the 20 volts dc range verify measurements 1 thru 6 as listed in Table 2 4 Measure all voltages between Ground Memory Power Supply TP1 or CPU Power Supply TP4 TABLE 2 4 NO LOAD POWER SUPPLY VOLTAGES 4 75 V to 5 25 V 11 4 V to 12 6 V CPU P S TP3 CPU P S TP1 CPU P S TP2 14 25 V to 15 75 V MEMORY P S TP5 4 75 V to 5 75 Bkup MEMORY P S TP4 4 75 V to 5 25 V Bkup MEMORY P S TP3 11 4 V to 12 6 V Bkup Set Processor Front Panel Power Switch to OFF Verify presence of Back up Bkup voltages measurements 4 thru 6 as listed in Table 2 4 Verify absence 1 6 0 volts dc of unprotected voltages measurements 1 thru 3 as listed in Table 2 4 Set Processor Service Switch to the OFF position Set Processor Circuit Breaker to the OFF position Install all PCB s in Processor card cage see Figure 2 5 Set Processor Circuit Breaker to the ON position Set Processor Service Switch to the ON position Set Processor Front Panel Power Switch to the ON position Using a multimeter set to the 20 volts 4 range verify measurements 1 thru 6 as listed in Table 2 5 Measure all voltages between Ground Memory Power Supply TP1 or CPU Power Supply TP4 5 MEMORY P S TP4 4 75 V to 5 25 V 6 TABLE 2 5 LOADED POWER SU
115. ta to MTU w o Wait Test Latch Reset Z80 Interrupt The MTCD Controller may access memory directly both read and write bypassing the CPU DMA is accomplished via the DMA channel 3 2 5 ACCESSORY PCB The Accessory PCB located adjacent to the CPU PCB in the Processor card cage contains the following circuits e Two serial I O ports e Timing and control for memory refresh Real Time Clock Power Fail Logic e Control micro code ROM for CPU The Accessory PCB is connected to the 1 0 Channel to allow data communication between the CPU and the VDT s and or serial Printer see Figure 3 2 The Accessory PCB and CPU are connected together by a short 50 wire ribbon cable It is through this cable that the CPU gains access to the micro instruction control ROM located on the Accessory PCB 3 13 3 2 6 BUS STRUCTURE A bus for the purposes of this discussion is a set of wires used a path over which information is transmitted from any of several sources to any of several destinations Each bus is shared by several devices with the CPU as one end point see Figure 3 2 The following paragraphs describe the function and basic operation of the CPU busses 3 2 6 1 Input Output Channel Busses The Input Output 1 0 Channel consists of three 3 physically independent busses that work in conjunction with one another to provide data communications between the CPU and the peripheral Controllers see Figure 3 2 The Output Data
116. tic programs listed in Chapter 4 Section 4 2 3 2 5 SYSTEM CONTROLS AND INDICATORS A functional summary of the Processor Disc Drive Cabinet controls and indicators is shown in Table 2 8 The VDT MTCD and Printer controls and indicators are described in their respective Service Manual 2 26 TABLE 2 8 PROCESSOR DISC DRIVE CONTROLS AND INDICATORS 1 POWER Figure 2 15 2 DISC READY Figure 2 15 LOAD Figure 4 TEST Figure 2 15 5 CLEAR Figure 2 15 6 RUN This momentary latching switch indicator controls the application of AC power to the Disc Drive CPU Power Supply and fans The lamp when illuminated indicates AC power is applied This lamp when illuminated indicates that both the Disc Drive and Disc Controller PCB are in a ready state This momentary switch indicator when pressed and released transfers the operating system software from either disc or tape as specified by the sense switches to main RAM memory This momentary switch indicator is wired in parallel with sense switch 3 Pressing the TEST switch corresponds to sense switch 3 being in the ON state This momentary switch indicator when pressed will issue a front panel interrupt command to the CPU This lamp when illuminated indicates the CPU is in the RUN state Figure 2 15 7 HALT This lamp when illuminated indicates the CPU is in the HALT state Figure 8
117. troubleshooting approach and to aid in isolating a problem to a specific peripheral at which time the Service Manual for that peripheral should be referenced to obtain procedures flowcharts to further isolate the problem to a specific module or assembly 4 2 1 SPECIAL TOOLS AND TEST EQUIPMENT Maintenance procedures contained in this document require special tools or test equipment 4 2 2 TROUBLESHOOTING PROCEDURE The procedures listed below are intended to provide a directed approach toward troubleshooting the System 200 410 thus reducing overall maintenance time When troubleshooting the system it is suggested that the following steps be performed 1 Get an accurate description of the problem from the operator or other responsible person then verify the problem 2 Perform the System Power Up check refer to Section 2 3 4 as a secondary verification of the suspected problem or as confirmation that basic system functions are in order 3 If the problem is of an intermittent nature run applicable diagnostic s in an effort to induce the problem on a controlled basis 4 Perform a visual inspection and verify that all cabling is connected properly and all connectors and printed circuit bo rds are seated properly 5 Check the AC line as a possible cause of problems e g sharp drops in voltage transients and poor grounds are common problems Also check DC voltage levels in suspected equipment 6 possibl
118. ts as the replacement drive is shipped without these mounts Set the Disc Drive unit on the special shipping pallet designed for the Model 2400 Secure the Disc Drive to the pallet mounting points with three 3 1 4 inch N C 1 2 inch bolts Be sure that the spindle lock and head actuator lock are set to the locked position To replace the Model 2400 Disc Drive reverse the preceding steps 16 thru 1 5 2 5 PARTS LIST The following lists the Spare Parts for the Model 1340 and 1345 Processor Item BFC MM Vendor 1340 200 1345 410 No Number Part Number Part Description 115 60 220 50 115 60 220 50 01 831000 903055 PCBA BACKPLANE 1340 1 1 0 0 02 820090 902140 PCBA 1320 CPU BD 1 1 I I 05 831060 903046 1340 ACCESSORY BD 1 1 0 0 04 831001 903145 001 PCBA BACKPLANE 12 SLOT I I 1 1 05 820091 903044 1300 SERIES CPU BD I I 1 1 06 851061 903149 002 1345 ACCESSORY BD I 1 1 07 831030 930034 001 PCBA POWER SUPPLY MEM 1 1 1 1 08 831040 930038 001 PCBA POWER SUPPLY CPU 1 1 1 1 09 831071 903081 PCBA CONTROL PANEL 1 1 1 1 10 854010 902074 002 OVERLAY CONTROL PANEL 1 1 1 1 11 837030 330003 SWITCH 5 CONTROL PANEL 1 1 1 1 12 081007 901490 CABLE RIBBON CPU ACC BD 1 1 1 1 13 837130 901662 001 CABLE FRONT PANEL 2 2 2 2 14 824010 100564 FAN 100 3 3 3 3 15 837040 180005 TRANSFORMER 1 1 1 1 16 837050 183000 BATTERY 12V 1 1 1 1 17 837060 133001 BRIDGE RECTIFIER 1 1 1 1 18 837070 181004 0
119. two milliseconds otherwise the charge held in the cell will leak off Figure 3 3 shows the required timing relationships to perform a memory refresh cycle Refresh timing and control is supplied to Main Memory by circuitry located on the Accessory PCB k Tho i MEME 5 aia READ a 566 o Y MERORY REFRESH ee Yoo nsec NOTE TIMES INDICATED REC MINIMUN FoR ATION Figure 3 3 Memory Refresh Cycle Timing Diagram 3 7 Main Memory is connected to the CPU Disc Controller and MTCD Controller by a memory data bus two 2 memory address busses and timing and control signals see Figure 3 2 It is on these busses that the information is transferred to from Main Memory to the rest of the system in a DMA The first 24k words of Main Memory are dedicated to the storage of the BASIC Operating System Software BOSS Another 8k of Main Memory is dedicated to the storage of the Compiler Lister The remaining memory is assigned to user task storage The Main Memory consists of two 2 PCBs Each PCB stores either 8k 16k 32k or 64k words or bytes The minimum memory requirement for the System 200 is 32k System 410 is 40k Maximum Main Memory size is therefore 96k The function of the address bits for a 64k main memory 2 32k modules is sho
120. umidity can cause excessive static charge build up 2 2 3 3 Static It is recommended that static free carpet be installed or that the existing carpeting be specially treated for this condition or the system be installed in an area without carpeting Static problems can be minimized by the installation of carpet containing Brunslon fiber avoid wool carpet In cases of existing carpet if it is not non static it should be treated by spraying with a non static fluid The carpets should be cleaned before spraying The following is a list of some of the brands of non static fluids that are available AS 20 Anti Static Agent Bigelow Anti Shock Spray Carbona Stop Shock Wallerstein Company Bigelow Sanford Inc Carbona Product Company 6301 Lincoln 140 Madison Avenue 50 50 Greenpoint Avenue Morton Grove Illinois New York City New York Long Island City New York 2 2 4 SPACE REQUIREMENTS Consult with the customer to select a suitable location for the System 200 410 There are no strict requirements as to where the computer may be installed with the exception of ac power refer to Section 2 2 1 However the following guidelines will aid in selecting the most ideal location from both a maintenance and customer usability point of view e Avoid areas where the operator will face into direct sunlight while operating the VDT e Select an area that is central to the areas providing input to the computer e Select an area that allows th
121. wer Up Check The following flowchart presents a logical approach to verifying that the system is operating properly and identifying common equipment problems 4 6 START Set Processor Circuit Breaker to ON Set processor Service Verify Refer to Switch to ON fuses Front Panel Chapter Cables installed 3 1 pin to pin per Set Processor Front Panel Power to ON Is Disc Drive rotating NO YES Cabnet Fans Rotating YES Is Disc Drive Interface PCB Fault lamp OFF and is Ready lamp ON NO YES Is the Processor Halt and NO Check that Disc Drive cord is plugged into processor PDU Check that Fan Power connector is plugged into processor PDU Verify Disc Drive cables installed pin to pin per Table 2 7 Check CPU Power Supply AC Input Cable Table 2 7 Check that Disc Drive Power switch is set ON Check that 115VAC is present at fan s terminals Refer to Disc Drive Service Manual Check front panel to CPU Power Supply Cable Refer to Disc Drive Service Manual A 1 Set VDT s Power Switch to ON Check YBF fuse Is Increase brightness Refer to Cursor displayed 5 contre DT Service on Manual Screen Set CPU sense Switches for Disc System Load See Figure 2 122 Depress and release Processor Load Switch
122. witch within 10 seconds after the question is displayed disable a particular test function take no action Memory Diagnostic MEM 16 This diagnostic checks that the memory PCB s are functioning properly by writing known data patterns into all memory locations and then reading the memory locations and comparing the results with the known data patterns No operator intervention is required other than turning power off and on as prompted by the diagnostic Run MEM 16 as follows 1 Set CPU sense switches for Fixed Media Disc Alternate Load see Figure 2 12 2 Set VDT mode switch rear panel to full F duplex 3 Press and release Processor Load switch 4 The VDT will display the Proprietary Notice BASS INITIALIZATION MAKE ENTRY TO OVERRIDE DEFAULT 5 Within 10 seconds the operator will press carriage return key 6 The operator will type MEM 16 then press CR carriage return key in response to ENTER PROGRAM 4 2 3 3 Basic All Purpose Service System BASS Diagnostics It is recommended that the BASS diagnostics listed in Table 4 2 be run at the time of system installation to verify proper operation of the peripherals TABLE 4 2 RECOMMENDED BASS DIAGNOSTICS Tape Cartridge Drive Exerciser Read Only Functional Verification Test D23 D24 Disc DMA Write Verfication Test Direct File Disc Exerciser 0 0 Printer Ripple Tes
123. wn in Table 3 1 The required signals and their time relationships to perform memory write cycles and memory read cycles respectively are shown in Figures 3 4 and 3 5 TABLE 3 1 64 MAIN MEMORY 2 32K MEMORY PCB S ADDRESS BIT FUNCTIONS MA11 MA13 Select Bank of 9 Chips 8 Banks MA14 MA15 Select Memory Module 2 Modules Used MA17 Not Use Some System 200s do not contain the Compiler Lister program Chip Row Select Select Memory Location Within Chip 4096 Locations Chip Column Select m lt n v DmR V n J VALID ADDRESS 560 SEC STABLE DATA MOST Be HIGH DURING ARTE CYCLE NOTE TIMES INDICATED ARE MINIMUM FoR CORRECT OPERATION Figure 3 4 Memory Write Cycle Timing Diagram E 200nS EC gt RTXX Ne ue Eon nT 5 400 56 y MEMORY ADORESS VALID ADDRESS RODTAGATE t _ CC E f MOST HIGH DURING READ CYCLE Memory OO MSEC max READ 2 bara apus k a RIS gt NOTES CU UNLESS TIMES DICATED ARE MINIMUM A FOR CORRECT TION 2 E i LONGER DATA wu E VALID LONGER Figure 3 5 Memory Read Cycle Timing Diagram 3 2 3 DISC DRIVE CONTROLLER

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