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Toshiba Portege 610CT - Maintenance Manual

1. MEE STITT TE T Figure E 9 Canadian keyboard Appendix F Wiring Diagrams F 1 Printer Wraparound Connector 9 PD7 15 8 PD6 14 7 PD5 13 6 PD4 16 10 4 2 12 3 PD1 17 2 PDO 11 Figure F 1 Printer wraparound connector F 2 RS 232 C Wraparound Connector 3 TD n E Meme E Figure F 2 RS 232 C wraparound connector F 3 RS 232 C Direct Cable 9 Pin to 9 Pin 3 4 DTR 6 7 RTS 1 5 GND 5 2 RD 3 1 CD 7 6 DSR 4 9 RI Figure F 3 RS 232 C direct cable 9 pin to 9 pin 610CT ERROR AUTFD SELECT STROBE ACK PE SLIN BUSY RD CTS CD DSR RI RD DSR CTS RI CD GND TD RTS DTR F 1 F 4 RS 232 C Direct Cable 9 Pin to 25 Pin 4 RTS 2 TD 3 3 RD 4 DTR 5 CTS 22 RI 5 GND GND 7 RTS 8 CD 6 DSR 20 DTR 8 CTS 9 Figure F 4 8 232 direct cable 9 to 25 pin 2 Appendix G BIOS Rewrite Procedures This Appendix explains how to rewrite the system BIOS program when you update the system BIOS Tools To rewrite the BIOS you need the following tool BIOS rewrite disk for 610CT Rewriting the BIOS 1 Set the system to Boot Mode 2 Turn off the power to the 610C
2. ins Oel Figure E 1 US keyboard E 2 United Kingdom UK Keyboard ert E e s ai Figure E 2 UK keyboard 6107 50 E 3 German GR Keyboard Ee ce ee 5429 0 Figure E 3 GR keyboard E 4 French FR Keyboard ie Ie te ee C ETE E EAE e ec fe 1 ic 2 Figure E 4 FR keyboard E 5 Spanish SP Keyboard Leg cx e e e e f o ep err ee c a a Pears ett Figure 5 SP keyboard E 6 Italian IT Keyboard EP ETE IC TC IC EE Figure E 6 IT keyboard E 7 Scandinavian SC Keyboard ilex tex tex ey a es je ea jer Figure E 7 SC keyboard E 8 Swiss German SL Keyboard 0440 4544 C C CU E A d ese E AE AG TE E NC Te TE CAE IC ACE TC IC TC TIC TE A AL ALT ALTE 280 Figure E 8 SL keyboard 4 Cr 28
3. J 4 19 5 Turn the computer back over and open the display panel Remove the tape secur ing the cables and disconnect the following cables LED from PJ9 FL inverter from PJ13 display from PJ12 speaker from PJ18 display panel open sensor from PJ17 and microphone from PJ2 6 Unthread the microphone cable FL inverter Speaker Sensor Display cable cable cable able Microphone Cable PJ2 Figure 4 16 top cover s nine latches 7 Unlatch nine latches securing the top cover to the base cover figure 4 17 Figure 4 17 Separating the top cover 8 Remove the top cover and display assembly 420 gt eee O10 CT Installing the Top Cover To install the 610CT top cover follow the steps below and refer to figures 4 15 to 4 17 610CT 1 2 Set the top cover in place and snap in the nine latches figures 4 16 and 4 17 Rethread the microphone cable Connect the following cables LED to PJ9 FL inverter to PJ13 display to PJ12 speaker to PJ18 display panel open sensor to PJ17 and microphone to PJ2 Replace the tape to secure the cables Close the display and turn the computer upside down Secure the top cover with eight M2x8 silver screws and two M2x6 silver screws Replace the HDD keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 6 4 5 4 4 4 3 and 4 2 4 21 48 RT
4. N Select items Enter Specify Esc Exit NOTE To exit the menu press the Esc key Ifa test program is in progress press Ctrl Break to exit the test program or press Ctrl C to stop the test program C 610CT 3 execute the DIAGNOSTIC TEST MENU from the DIAGNOSTICS MENU set the highlight bar to 1 and press Enter The following DIAGNOSTIC TEST MENU will appear TOSH BA personal computer PT610CT DIAGNOSTICS version X XX c copyright TOSHIBA Corp 19XX DIAGNOST SYSTEM TEST MEMORY TEST C TEST MENU KEYBOARD TEST DISPLAY TEST FLOPPY DISK TEST PRINTER TEST ASYNC TEST HARD DISK TEST REAL TIMER TEST NDP TEST EXPANSION TEST SOUND TEST ERROR RETRY COUNT SET FDD amp HDD EXIT TO DIAGNOSTI CS MENU N Select items Enter Specify Esc Exit Refer to sections 3 4 through 3 15 for detailed descriptions of each Diagnostic Test 1 through 12 Function 88 sets the floppy disk drive and hard disk drive error retry count Function 99 exits the submenus of the DIAGNOSTIC TEST MENU and returns to the DIAGNOSTICS MENU 4 Select the option you want to execute and press Enter The following message will appear
5. 1 2 EB EE BH H E E a lt lt PRESS 1 BUTTON2 THEN END gt gt 111111111 There are eight directions of arrow mark as shown below ____ i _ __ a E When the button is pressed it alternates as shown below 3 13 3 7 Display Test To execute the Display Test select 4 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen The Display test contains eleven subtests that test the 610CT display in various modes Move the highlight bar to the subtest you want to execute and press Enter Subtest 01 Subtest 02 3 14 VRAM Read Write This subtest writes constant data FFFFh AAAAh 5555h 0000h and address data to video RAM 1MB This data is then read from the video RAM and compared to the original data Character Attributes This subtest displays the following character attribute modes normal intensi fied reverse and blinking as shown in the display below The character attribute modes display the foreground color and intensified color 16 colors or 16 level gray scale using black blue red magenta green cyan yellow and white from the color display The display below appears on the screen when this subtest is executed CHARACTER ATTRIBUTES NEXT LINE SHOWS NORMAL DI
6. 3 20 2 Operations 1 Selecting 5 and pressing Enter in the DIAGNOSTIC MENU logs error informa tion into RAM or onto a floppy disk The error information is displayed in the following format XXXXX ERRORS CNT TS NAME PASS STS ADDR WD RD HSTS STATUS NAME 001 FDD 02 0000 103 00001 00 00 FDD WRITE PROTECTED 001 FDD 01 0000 180 00001 00 00 FDD TIME OUT ERROR Address Error status Pass count HDC status Subtest number Read data Test name Write data Error count Error status name 1 Next 2 Prev 3 Exit 4 Clear 5 Print 6 FD Log Read 7 FD Log Write 610CT 3 43 3 44 The error information displayed on the screen can be manipulated by the following number keys The 1 key scrolls the display to the next page The 2 key scrolls the display to the previous page The 3 key returns to the Diagnostic Menu The 4 key erases all error log information in RAM The 5 key outputs the error log information to a printer The 6 key reads the log information from a floppy disk The 7 key writes the log information to a floppy disk In the case of error retry OK a capital R will be placed at the beginning of the error status However it is not added to the error count 610CT 3 21 Running Test 3 21 1 Function Description This function automatically executes the following tests in sequence System test subtest number 01 2 Memory test subtest number 01 02 04 06 07 3 Display test subtest nu
7. Printer test RS 232 C test Timer initialization TIMER IN ERRUPT ERROR RTC UPDATE ERROR NDP initialization Expansion I O ROM Check 1 Check 2 Check 3 Check 4 610CT Expansion system ROM If the following error codes are displayed go to Procedure 5 Olh O5h 06h 07h OAh OBh ODh 15h 16h 18h 1Fh 22h 25h 40h 41h 42h 54h 55h 65h 70h 80h 90h AOh A6h If error code 4Ah is displayed go to the Keyboard Troubleshooting procedures in Section 2 7 If error code 5Ah is displayed go to the HDD Troubleshooting Procedures in Section 2 6 If error code 60h is displayed go to the FDD Troubleshooting Procedures in Section 2 5 2 13 Procedure 3 Printer Port LED Check on Resume Mode The printer port LED displays the IRT status and test status by turning lights on and off as an eight digit binary value for resume mode To use the printer port LED follow these steps 1 the computer s power on then set to resume mode 2 Turn the computer off 3 Plug the printer port LED into the printer connector 4 Turn the computer on 5 Read the LED status from left to right as you face the back of the computer 6 Convert the status from binary to hexadecimal notation 7 Ifthe final LED status is FFh normal status go to Procedure 4 8 If the final LED status matches of the test status values in table
8. the display module face down and remove one 2 5 4 silver screw and one M2 5x2 silver screw securing the FL unit cover 4 Lift off the FL unit cover M2 5x2 ase lt FL unit cover M2 5x4 screw Figure 4 28 Removing the FL unit screws 5 Free the FL cable from latches and remove tape securing the cable 6 Remove the FL unit Figure 4 29 Removing the FL 442 Installing the Fluorescent Lamp Unit To install the 610CT fluorescent lamp unit follow the steps below and refer to figures 4 28 and 4 29 1 Seat the FL unit secure the cable in the latches and replace the tape 2 the FL unit cover in place and secure it with one M2 5x4 silver screw and one M2 5x2 silver screw 3 Replace the display module FL inverter board display mask PCMCIA card optional memory module and battery pack as described in sections 4 17 4 16 4 15 4 4 4 3 and 4 2 610 C T 443 4 19 Microphone Removing the Microphone To remove the 610CT microphone follow the steps below and refer to figure 4 30 1 Turn off the power to 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory module PCMCIA card keyboard HDD top cover and display mask as described in sections 4 2 through 4 7 and 4 15 3 Pinch the microphone cover to free it from two latches then remove the cover 4 Remove the microphone 5
9. Left Alt Left Shift Right Alt Right Shift Left Alt Caps Lock f these selections are made you cannot warm boot the system by pressing Ctrl Alt Del i Pointing Devices This option enables or disables the AccuPoint Auto selected The AccuPoint is disabled when a PS 2 mouse or serial mouse is connected otherwise the Accupoint is enabled Default Simultaneous If a PS 2 mouse or serial mouse is connected to an optional port replicator both the Accupoint and the external mouse are enabled Boot Priority Use this option to select the disk drive priority for boot up FDD gt HDD computer looks for bootable files first on the FDD and next on the HDD Default HDD gt FDD computer looks for bootable files first on the HDD and next on the FDD You can reverse the order by holding down the F10 key while the computer is booting This procedure alternates the setup setting 7 Battery Save Options The following set of options can be selected in the submenu of User Setting which is one of the Battery Save Mode options a Processing Speed This feature changes the CPU processing speed High operates at 90 MHz Default Low CPU operates at half speed 610 7 3 1 b CPU Sleep Mode Use this option to enable or disable the CPU sleep function Enabled Enables sleep mode Disabled Disables slee
10. 2 Remove the battery pack optional memory module PCMCIA card display mask and FL inverter board as described in sections 4 2 4 3 4 4 4 15 and 4 16 3 Remove four silver M2x6 screws at each corner of the display module 4 Rotate the display module partially out of the cover from left to right 5 Disconnect the flexible cable from CN11 M2x6 screws Figure 4 27 Removing the display module screws 440 CF Installing the TFT Color Display Module To install the 610CT TFT color display module follow the steps below and refer to figure 4 27 1 Connect the flexible cable to CN11 2 Seat the display module in the display cover and secure four silver M2x6 screws one at each corner of the panel 3 Replace the FL inverter board display mask PCMCIA card optional memory module and battery pack as described in sections 4 16 4 15 4 4 4 3 and 4 2 610 77 441 4 18 Fluorescent Lamp Unit Removing the Fluorescent Lamp Unit To remove the 610CT fluorescent lamp FL follow the steps below and refer to figures 4 28 and 4 29 1 Turn off the power to 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory module PCMCIA card display mask FL inverter board and display module as described in sections 4 2 4 3 4 4 4 15 4 16 and 4 17 3
11. Parity Error Framing Error Overrun Error Line Status Error Modem Status Error No Carrier Card Modem Error Card Modem No Dial Tone Card Modem Bad Command Error Bad Address Mark Error Record Not Found HDC Not Reset Error Drive Not Initialized HDC Overrun DRQ DMA Boundary Error Bad Sector Bad Track Error ECC Error ECC Recover Enabled HDC Error Seek Error Time Out Error Drive Not Ready Undefined Error Write Fault Status Error Access Time Out Error No Co Processor Control Word Error Status Word Error Bus Error Addition Error Multiply Error PCMCIA Address Line Error REG Line Error Line Error CE 2 Line Error DATA Line Error WAIT Line Error BSY Line Error BVD 1 Line Error No PCMCIA 3 35 3 17 Hard Disk Test Detail Status When an error occurs in the hard disk test the following message is displayed HI DC status XXXXXXXX Detailed information about the hard disk test error is displayed on the screen by an eight digit number The first four digits represent the hard disk controller HDC error status number The last four digits are not used The hard disk controller error status is composed of 2 bytes the first byte displays the con tents of the HDC status register in hexadecimal form and the second byte displays the HDC error register The contents of the HDC status register and error register are listed in tables 3 4 and 3 5 Table 3 4 Har
12. 3 Remove two M2 5x4 screws securing the LED board and speaker assembly 4 Remove the LED board and speaker assembly 5 Rotate the LED board out and unsnap four latches on the LED board to remove it 6 Unsnap two latches on the speaker to remove the speaker 7 Remove the protective rubber cover M2 5x4 screws Figure 4 24 Removing the LED board 434 0 Installing the LED Board and speaker To install the 610CT LED board and speaker follow the steps below and refer to figure 4 24 610CT 1 2 Put the protective rubber cover on the speaker Place the speaker in the assembly and secure the two latches Place the LED board in the assembly and secure the four latches Seat the assembly in the bottom cover Secure the LED board and speaker assembly with two M2 5x4 screws Replace the top cover HDD keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 7 back through 4 2 4 35 4 15 Display Mask Removing the Display Mask To remove the 610CT display mask follow the steps below and refer to figure 4 25 1 4 36 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer Remove the battery pack optional memory module and PCMCIA card as de scribed in sections 4 2 4 3 and 4 4 Remove two rubber seals from the display hinges to expose screws securing the
13. FL Inverter System Board Speaker t LED Board AccuPoint Control Button PJ3 Power Backup Battery Sound Board H Banery Pack FAN Microphone 60 2 15 2 5 Floppy Disk Drive Troubleshooting This section describes how to determine if the 610CT 3 5 inch external floppy disk drive is functioning properly If the 3 5 inch external FDD is not connected to the computer connect it and perform the steps below starting with Procedure 1 and continuing with the other proce dures as required Procedure 1 FDD Head Cleaning Check Procedure 2 Diagnostic Test Program Check Procedure 3 Connector Check and Replacement Check Procedure 1 FDD Head Cleaning Check FDD head cleaning is one option available in the Diagnostic Program Detailed operation is given in chapter 3 Tests and Diagnostics After loading Toshiba MS DOS run the Diagnostic Program and then clean the FDD heads using the cleaning kit If the FDD still does not function properly after cleaning go to Proce dure 2 If the test program cannot be executed on the 610CT go to Procedure 3 216 M 610CT Procedure 2 Diagnostic Test Program Execution Check The Floppy Disk Drive Diagnostic Test program is stored on the 610CT Diagnostics Disk After loading Toshiba MS DOS run the diagno
14. PJ6 P REP Connector 72 pin Table C 6 P REP connector pin assignments 72 pin Signal name AGREEN 110 ARED 110 PD5 100 PE 100 IFDASL 000 IFRDAT 000 IFAMON 000 EXKBCK 100 DSR1 100 DCIN RXD1 000 DCD1 100 Signal Name ABLUE 110 AUTFD 000 PINT 000 ERROR 000 DSKCHG 000 IFLOWD 000 MOUSCK 100 CTS1 100 DCIN DCIN DTR1 110 GND EXKBDT 100 IFRADY 000 SELCT 100 GND PD0 100 GND VCC PD1 100 PD3 100 ACK 000 IFSTEP 000 GND IFWEN 000 IFINDX 000 SLIN 000 PD2 100 STROB 000 VCC 5 110 VCC PD6 100 IFWDAT 000 IFWPRQ 000 GND GND RTS1 110 DCIN DCIN TXD1 010 MOUSDT 100 PRCHEK 000 IFDIRC 000 IFTRKO 000 PD7 100 VCC CHSYNC 110 GND VCC DCIN GND RT1 100 GND IFHMED 000 IFSSEL 000 BUSY 100 PD4 100 VCC VCC C 5 C 7 C 8 C 6 PJ7 KB Connector 19 pin Table C 7 KB connector pin assignments 19 pin Signal name 00 001 KBOT02 001 KBRT1 100 KBRT3 100 KBRT5 100 KBRT7 100 KBOT04 001 KBOT06 001 KBOT08 001 KBOT10 001 PJ9 LED Connector 12 pin Signal name GND GND DCRED 101 CHGSP 120 HDDLED ARWLED 101 Signal Name KBOT01 001 100 KBRT2 100 KBRT4 100 KBRT6 100 KBOTO03 001 KBOT05 001 KBOTO07 001 KBOTO09 001 Table C 8 LED connector pin assignments 12 pin Signal Name GND GND DCGRN 101 CHHRQ 100 CAPLED 101 NUMLED 101 610CT C 9 610CT Signal name
15. you use such software try to change the software setting to IRQIO If you cannot change the software setting change the hardware setting to IRQT d DMA direct memory access channel Use this option to set the DMA channel The available settings are Channel 0 Channel 1 Default Channel 3 Password This option allows you to set or reset the password for power on and instant security Registered password has been registered Not registered password has not been registered For details on setting the password refer to the 610 User s Manual Others Whether or not you need to configure the computer with these options depends primarily on the kind of software or peripherals you use a Power up Modes This option lets you choose between AutoResume and boot mode You can also set this option using hotkeys AutoResume is effective with either the internal LCD or with an external monitor Boot Turns boot mode Default Resume Turns on the AutoResume feature b CPU Cache Use this feature to enable or disable the CPU cache Enabled Enables the CPU cache Default Disabled Disables the CPU cache When enable is selected a subwindow similar to the one below is displayed to let you select the cache write policy The options for this setting are Write Policy default and Write back 3 57 3 58 c Write Policy Write back Write back policy provides better system performance becau
16. If drive C is not listed return to the FDISK menu and choose the option to create a DOS partition on drive C Recheck the system If the problem still exists go to Procedure 2 Check3 If drive C is listed as active in the FDISK menu go to Check 4 If drive C is not listed as active return to the FDISK menu and choose the option to set the active partition for drive C Recheck the system If the problem still exists go to Proce dure 2 Check4 Remove the system disk from the FDD and cold boot the computer If the prob lem still exists go to Procedure 2 Otherwise the HDD is operating normally 610CT 219 Procedure 2 Message Check When the 610CT HDD does not function properly some of the following error messages may appear on the display Start with Check 1 below and perform the other checks as instructed Check 1 Check 2 Check 3 Check 4 2 20 If any of the following messages appear perform Check 2 If the following mes sages do not appear perform Check 4 HDC ERROR After 5 seconds this message will disappear or HDD 0 ERROR After 5 seconds this message will disappear or HDD 1 ERROR After 5 seconds this message will disappear If either of the following messages appears perform Procedure 3 If the following messages do not appear perform Check 3 Insert system disk in drive Press any key when ready or Non System disk or disk error Replace and press any
17. Remove the protective rubber cover from the microphone Microphone cover Microphone Figure 4 30 Removing the microphone Installing the Microphone To install the 610CT microphone follow the steps below and refer to figure 4 30 1 Replace the protective rubber cover on the microphone 2 Seat the microphone 3 Replace the microphone cover and secure the two latches 4 Replace the display mask top cover HDD keyboard PCMCIA card optional memory module and battery pack as described in sections 4 15 and 4 7 back through 4 2 444 4 20 Display Cable Removing the Display Cable To remove the 610CT display cable follow the steps below and refer to figure 4 31 1 Turn off the power to 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory module PCMCIA card keyboard HDD top cover display mask and microphone as described in sections 4 2 through 4 7 4 15 and 4 19 3 Remove four M2 5x5 screws to release the cover assembly from the display assembly 4 Disconnect the LCD harness from the LCD flex cable and remove it from the unit LCD flex cable LCD harness M2 5x5 screws ee Figure 4 31 Removing the display cable Installing the Display Cable To install the 610CT display cable follow the steps below and refer to figure 4 31 1 Connect the LCD harness to the LCD flex cable and replace
18. Removing the System Board To remove the 610CT system board follow the steps below and refer to figure 4 22 1 4 30 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer Remove the battery pack optional memory card optional PCMCIA card top cover hard disk drive RTC and back up batteries AccuPoint control button contact sound board and power supply board as described in sections 4 2 through 4 11 Remove five M2 5x4 screws Lift out the system board Remove the metal cover M2 5x4 screws Figure 4 22 Removing the system board 610CT Installing the System Board To install the 610CT system board follow the steps below and refer to figure 4 22 NOTE New system boards do not have fans attached Therefore when you remove a malfunctioning system board for replacement be sure to retain the fan for use in the new system board 1 Seat the system board 2 Replace the metal cover 3 Secure the system board with five M2 5x4 screws 4 Replace the power supply board sound board AccuPoint control button contact RTC and back up batteries top cover HDD keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 11 back through 4 2 610 C T 2731 4 13 Fan Removing the Fan To remove the 610CT fan follow the steps below and refer to figure 4 23 1 Turn off the power to the 610CT Disc
19. Replace the battery pack as described in section 4 2 When you turn the computer on it should automatically recognize the total memory capacity Verify that the added memory is recognized 610CT 4 4 Optional PCMCIA Card Removing an Optional PCMCIA Card To remove an optional PCMCIA card from the 610CT follow the steps below and refer to figure 4 7 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack and optional memory module as described in sections 4 2 and 4 3 3 Open the cover to the PCMCIA slot 4 Pull out the eject button for the card you want to remove and press the button The card will pop out slightly Figure 4 7 Removing the PCMCIA card 5 Grasp the card and pull it out 610 CT O 441 Installing an Optional PCMCIA Card To install an optional PCMCIA card in the 610CT follow the steps below and refer to figure 4 8 1 Insert the PCMCIA card as shown in figure 4 8 When the card is almost fully seated you will feel some resistance Press gently to assure a firm connection but do not force the card into position Figure 4 8 Installing the PCMCIA card 2 When the card is fully seated an eject button will pop out the top button is for the top connector and the bottom button is for the bottom connector 3 Pull the eject button slightly and bend it to lock the card 4 Close the cover 5
20. Slide the battery lock to free the battery release latch then slide the battery release latch to pop the battery out slightly to the left figure 4 1 Battery release latc Battery pack Figure 4 1 Unlocking the battery pack A slight gap will open between the right end of the battery pack and the computer With your left hand slip your fingers into the gap and pull the battery pack to the left until it stops about 1 cm or half an inch Grasp the left end of the battery pack and lift it up to remove it figure 4 2 Figure 4 2 Lifting out the battery pack 610CT Installing the Battery Pack To install the 610CT battery pack follow the steps below and refer to figures 4 1 to 4 3 1 Place the right end of the battery pack at the red line marked on the alignment guide The battery pack should seat level with the computer Figure 4 3 Installing the battery pack 2 Gently press down on the center of the battery pack and at the same time push it to the right When the battery is nearly seated you will feel a slight resistance Press the battery in carefully until you feel it click into place then lock the battery lock figure 4 3 610 C _ _ 47 4 3 Optional Memory Module Removing an Optional Memory Module To remove an optional memory module from the 610CT follow the steps below and refer to figure 4 4 1 Turn off the power to 610CT Disconnect the AC adapter power cord and al
21. 2 2 go to procedure 5 Table 2 2 Printer port LED resume mode error status Error status Meaning of status RAM BIOS error Press the reset switch Suspend process error The system will suspend while FDD is accessed etc The system has optional ROM or an optional card CGA MDA Backup RAM checksum error Main memory checksum error Video RAM checksum error Extended memory checksum error Backup RAM checksum error Main memory checksum error Video RAM checksum error Extended memory checksum error Card modem error Password error 2 14 _ _ _6 0 Procedure 4 Diagnostic Test Program Execution Check Execute the following tests from the Diagnostic Test Menu Refer to chapter 3 Tests and Diagnostics for more information on how to perform these tests System test Memory test Printer test ASYNC test Real Timer test NDP test PCMCIA test uU gy eoa prs If an error is detected during any of these tests go to Procedure 5 Procedure5 Replacement Check The system board may be damaged Disassemble the 610CT following the steps described in chapter 4 Replacement Procedures and perform the following check Check Replace the system board with a new one If the problem still exists other FRUs may be damaged eia parallel device PCMCIA Card Memory Module 1 D 1 Int HDO
22. 610CT Diagnostic Disk format the HDD with a low level format option Refer to Chapter 3 Tests and Diagnostics for more information about the diagnostic program If the following message appears on the display the HDD low level format is complete Partition and format the HDD using the MS DOS FORMAT com mand Format complete If you cannot format the HDD using the Test and Diagnostic program go to Procedure 4 2 21 Procedure 4 Diagnostic Test Program Execution Check The HDD test program is stored in the 610CT Diagnostics Disk Perform all of the HDD tests in the Hard Disk Drive Test Refer to chapter 3 Tests and Diagnostics for more infor mation about the HDD test program If an error is detected during the HDD test an error code and status will be displayed per form Check 1 The error codes and statuses are described in table 2 4 If an error code is not generated the HDD is operating properly Table 2 4 Hard disk drive error code and status Bad command Bad address mark Record not found HDC not reset Drive not initialized HDC overrun DRQ DMA boundary error Bad sector error Bad track error ECC error ECC recover enabled HDC error Seek error Time out error Drive not ready Undefined error Write fault Status error Access time out error Data compare error Check 1 Replace the HDD unit with a new one following the instructions i
23. Type select 0 2DD 2DD 1 2D 2D 2 2D 2HD 3 2HD 2HD Select a media drive type number and press Enter A message similar to the one below will be displayed Warning Disk data will be destroyed Insert work disk into drive A Press any key when ready Remove the Diagnostics Disk from the FDD insert the work disk and press any key The following message will be displayed when the FDD format is executed DD TYPE DD TYPI DD TYPI rj RACK XXX EAD X ECTOR XX rr Ay Hr d Format start track head XXX X After the floppy disk is formatted the following message will appear Format complete Another format 1 Yes 2 No Typing 1 displays the message from step c above Typing 2 returns the test to the DIAGNOSTIC MENU COPY program a b When COPY is selected the following message appears FLOPPY DISK FORMAT amp COPY VX XX Type select 0 2DD 2DD 1 2D 2D 2 2D 2HD 3 2HD 2HD Selecting a media drive type number will display a message similar to the one below Insert source disk into drive A Press any key when ready 610CT 4 610CT c d Remove the Diagnostics Disk from the FDD insert the source disk and press any key The following message will appear indicating the program has started FDD TYPE TRACK XXX FDD TYPE HEAD X FDD TYPE SECTOR XX Copy start trac
24. batteries top cover keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 8 back through 4 2 610 C T 425 4 10 Sound Board Removing the Sound Board To remove the 610CT sound board follow the steps below and refer to figure 4 20 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card key board HDD top cover RTC and backup batteries and AccuPoint control button contact as described in sections 4 2 through 4 9 3 Remove one M2 5x3 screw 4 Remove the sound board cover 5 Carefully lift up the sound board so the microphone and headphone ports are clear of the side cover and disconnect the sound board cable from PJ20 6 Lift out the sound board Sound board M2 5x3 screw Sound board cover Sound board Figure 4 20 Removing the sound board 4 26 M 610CT Installing the Sound Board To install the 610CT sound board follow the steps below and refer to figure 4 20 1 Partially position the sound board so the microphone and headphone ports on the sound board can be placed into the side cover 2 Connect the sound board cable to PJ20 and seat the sound board 3 Replace the sound board cover 4 Secure the sound board and the sound board cover with one M2 5x3 screw 5 Replace the AccuPoint control button contact R
25. directly to the panel 2 4 If water or other liquid is left on the panel s surface for a long period it can change the screen s tint or stain it Be sure to quickly wipe off any liquid 5 Glass is used in the panel so be careful not to drop it or let it strike a hard object which could cause breakage or cracks 2 amp 610CT 6 CMOS LSI circuits are used in the module so guard against damage from electro static discharge Be sure to wear a wrist or ankle ground when handling the module 7 Do not expose the module to direct sunlight or strong ultraviolet rays for long periods 8 Do not store the module at temperatures below specifications Cold can cause the liquid crystals to freeze lose their elasticity or otherwise suffer damage 610 A 4 9 Do not disassemble the LCD module Disassembly can cause malfunctions 10 If you transport the module do not use packing material that contains epoxy resin amine or silicon glue alcohol or oxime These materials can release gas that can damage the panel s polarization 610CT Appendix B Board Layout B 1 610CT System Board Front View rt 9 Del ual 2 she LIPPE o X tle is S 2 2 Pn E ics ss om 42 T Figure B 1 Board layout front 9 r D Y E B 1 B 2 Sys
26. display mask Remove two brass M2 5x6 screws at the bottom corners of the display mask Slip your fingers between the top of the display s cover and the display mask and pull out gently to release six latches Start with the latches at the center Continue around the plastic cover to release four latches on each side and five latches at the bottom Display mask M2 5x6 brass screw 4 Latches Figure 4 25 Removing the display mask 610CT Installing the Display Mask To install the 610CT display mask follow the steps below and refer to figure 4 25 1 Set the display mask in place and press firmly to secure the latches Start at the bottom five latches and work your way around the sides four latches on each side and finally secure the six latches at the top 2 Secure two M2 5x6 screws at the bottom corners of the display cover 3 Replace two rubber seals to cover the screws 4 Replace the PCMCIA card optional memory module and battery pack as de scribed in sections 4 4 4 3 and 4 2 610CT S48 4 16 FL Inverter Board Removing the FL Inverter Board WARNING To reduce the risk of accidental electric shock when you turn on the power to check the FL inverter during disassembly never touch the exposed areas that carry high voltage To remove the 610CT FL inverter board follow the steps below and refer to figure 4 26 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and a
27. for the system to turn on automatically For example if you are expecting to receive a modem transmission at a time when you are away or asleep you can set this option to the time of the transmission This option does not automatically turn off the system This feature operates in either Resume or boot mode 00 00 00 Sets the power on time 24 hour clock Disabled Disables the alarm NOTE Do not remove the AC adapter and battery pack at the same time when you use this feature If you do so the setting will be lost You must reset this option when you restore power h Keyboard This option lets you change the keyboard layout and set the Fn key equiva lent when you are using an external keyboard Selecting this option displays the following subwindow Keyboard Int Keyboard key layout Normal Ext Keyboard Fn key equivalent Disabled Int Keyboard layout This option lets you select the arrangement of the Caps Lock Ctrl and Alt keys according to the following illustrations Alternative Normal Default Ext Keyboard Fn key equivalent Use this option to set a key combination on an external keyboard to emulate the Fn key on the computer s internal keyboard Setting an Fn key equivalent will enable you to use Hotkeys by pressing the set combination in place of the Fn key 610CT Disabled Fn key equivalent Default Fn Equivalent Left Ctrl b Left Alt Right Ctrl Right
28. properly Tools and Equipment The use of ElectroStatic Discharge ESD equipment is very important for your safety and the safety of those around you Proper use of these devices will increase the success rate of your repairs and lower the cost for damaged or destroyed parts The following equipment is necessary to disassemble and reassemble the 610CT 4 4 One M2 Phillips screwdriver to remove and replace screws Tweezers to lift out screws that you cannot grasp with your fingers ESD mats for the floor and the table you are working on An ESD wrist strap or heel grounder Anti static carpeting or flooring Air ionizers in highly static sensitive areas 610CT Screw Tightening Torque When you fasten screws be sure to follow the torque list below Overtightening can damage components and screws undertightening can result in electrical shorts or other damage if screws or components come loose M2 022N m 2 2 kgfecm M2 5 0 36 Nem 3 5 kgfecm FDD 0 22 Nem 22 kgfecm HDD 0 3 Nem 3 1 kgfecm or less 610 45 4 2 The Battery Pack Removing the Battery Pack To remove the 610CT battery pack follow the steps below and refer to figures 4 1 and 4 2 1 4 6 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer Close the display if it is open Turn the computer upside down
29. time 60 ns Data transfer is 64 bit width Available hyper page mode EDO BIOS ROM Flash EEPROM 128 MB one 128Kx8 bit chip memory 64 KB in the ROM are used for system BIOS 40 KB in the ROM are used for VGA BIOS 40 KB in the ROM are reserved Access time 150 ns Data transfer is 8 bit width Video RAM 1 MB Two 256Kx16 bit DRAM 5 volt operation Optional memory One expansion memory slot is available for 8 16 and 32 MB memory modules which may consist of 1 MBx16 bit chips Total maximum memory size is 40 MB if a 32 MB memory module is installed 3 3 volt operation No parity bit Access time 60 ns Data transfer is 64 bit width Available hyper page mode EDO One super integration SI The following components Two DMACs 82C37 equivalent Two PICs 82C59 equivalent Two SIOs 16550 equivalent One SIO is not used One PIT 82C54 equivalent One FDC TC8565 equivalent One VFO TC8568 equivalent One I O port decode One SIO port control One printer port control supported ECP One FDD control One speaker control One power communication control 1 6 System Controller Gate Array SCPCNT6 GA This gate array has the following functions CPU control SMI control CPU clock control Memory control 64 bit bus memory control 32 bit bus memory control Bus control 64 bit data bus lt gt 32 bit data bus 32 bit local bus control Address latch control I O register control Process
30. 010 PDBO1 110 PDBO3 110 PDBO05 110 PDBO7 110 BUSY 110 SELCT 110 ERROR 010 SLIN 010 GND GND GND GND PJ3 FDD Connector 26 pin Signal name VCC VCC VCC VCC IFHMED 000 IFLOWD 000 SLFDLD 100 GND GND GND GND GND GND Table C 2 PRT connector pin assignments 25 pin Signal Name PDBO0 110 PDBO2 110 PDB04 110 PDBO06 110 ACK 010 PE 110 AUTFD 010 PINT 010 GND GND GND GND Table C 3 FDD connector pin assignments 26 pin Signal Name IFINDX 000 IFDASL 000 DSKCHG 000 IFRADY 000 IFAMON 000 IFDIRC 000 IFSTEP 000 IFWDAT 000 IFWEN 000 IFTRKO 000 IFWPRO 000 IFRDAT 000 IFSSEL 000 C 3 C 4 C 5 C4 PJ4 HDD Connector 44 pin Signal name RESET 000 SD07 100 006 100 005 100 004 100 003 100 002 100 001 100 000 100 GND N C FIOWR 000 FIORD 000 IOCRDY 100 N C IRQ14 100 SA01 100 5 00 100 HDDCS0 000 HDDLED 000 VCC GND PJ5 Asynchronous Connector 9 pin Signal name DCD1 101 TXD1 011 GND RTS1 101 1 101 Table C 4 HDD connector pin assignments 44 pin Signal Name GND SD08 100 SD09 100 SD10 100 011 100 012 100 SD13 100 014 100 SD15 100 N C GND GND GND N C GND 0 916 000 N C SA02 100 HDDCS 1 000 GND VCC Pull Up 47K Table C 5 Asynchronous connector pin assignments 9 pin Signal Name RXD1 001 DTR1 111 DSR1 101 CTS1 101 610CT C 6 610CT
31. 1 1 Features The Toshiba 610CT is one of the lightest and most advanced portable computers available Utilizing advanced technology and high speed components the 610CT offers excellent display legibility battery operation and IBM PC AT compatibility The 610CT system unit has the following features 610CT Microprocessor A Pentium Processor 90MHz with Voltage Reduction Technology VRT that operates at 90 MHz 2 9 Volts Cache memory A 16 KB cache memory which is stored in the Pentium Processor Disk storage An internal 720 million byte MB Hard Disk Drive HDD with an average access time of 15 milliseconds A 3 5 inch external Floppy Disk Drive FDD supports 2HD floppy disks 1 44 MB and 2DD floppy disks 720 KB Memory Standard with 8 MB of CMOS Random Access Memory RAM 3 3 Volts This includes 640 KB of conventional memory and 7 360 KB of extended memory which can be utilized as expanded memory compatible with the Lotus Intel Microsoft Ex panded Memory Specifications LIM EMS TFT color LCD A high resolution Thin Film Transistor TFT full color LCD displays 640x480 pixels The internal display controller supports VGA functions for internal display and Super VGA SVGA for external display Keyboard An easy to use 82 84 key keyboard provides a numeric keypad overlay for fast nu meric data entry or for cursor and page control The computer s keyboard supports software that uses a 101 or 102 key enhan
32. 6789 lt gt A 0123456789 lt gt AB 0123456789 lt gt 0 0123456789 lt gt ABCD 0123456789 lt gt 0123456789 lt gt ABCDEF 123456789 lt gt 23456789 lt gt ABCDEFGH BCDEFGHIJKLMNOPO RSTUVWXYZ N abcdefghijklmnopqrstuvwx CDEFGHIJKLMNOPORSTUVWXYZ N abcdefghijklmnopqrstuvwxy DEFGHIJKLMNOPORSTUVWXYZ N abcdefghijklmnopqrstuvwxyz EFGHIJKLMNOPORSTUVWXYZ N abcdefghijklmnopqrstuvwxyz FGHIJKLMNOPORSTUVWXYZ N abcdefghijklmnopqrstuvwxyz GHIJKLMNOPORSTUVWXYZ N abcdefghijklmnopqrstuvwxyz l HIJKLMNOPORSTUVWXYZ _ abcdefghijklmnopqrstuvwxyz IJKLMNOPQRSTUVWXYZ N abcdefghijklmnopqrstuvwxyz l 3456789 2 80ABCDEFGHIJKLMNOPORSTUVWXYZ N abcdefghijklmnopqrstuvwxyz C 456789 lt gt ABCDEFGHIJ PRESS ENTER KEY KLMNOPORS TUVWXYZ _ abcdefghijklmnopaqrstuvwxyz Cu Pressing Enter toggles between tests To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break 320x200 Character Display mode 4 D This subtest displays two color sets for the color display in 320x200 dot graphics mode 4 and D One example is shown below GREEN CYAN MAGENTA BROWN WHITE Pressing Enter toggles between tests To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break 610CT Subtest 06 640x200 Cha
33. C and Backup Batteries Removing the RTC and Backup Batteries To remove the 610CT RTC and backup batteries follow the steps below and refer to figure 4 18 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card key board and top cover as described in sections 4 2 through 4 7 3 Peel off the tape securing the backup battery cable 4 Disconnect the RTC battery cable from PJ15 on the system board 5 Slide the RTC battery free of the brackets holding it in place to remove the battery 6 Disconnect the backup battery cable from PJ21 on the power supply board and lift out the battery Note that the cable is under the edge of the clear plastic protec tor Backup battery Backup battery cable RTC battery RTC battery cable E Figure 4 18 Removing the RTC and backup batteries 4 22 Installing the RTC and Backup Batteries DANGER Always use the RTC battery or backup battery that is authorized by Toshiba to be compatible with the unit Since other batteries have different specifications they may be incompatible with the unit and may burst or explode To install the 610CT RTC and backup batteries follow the steps below and refer to figure 4 18 1 Connect the backup battery cable to PJ21 on the power supply board a
34. DA07 100 OO0O0O0 0 000000 0 CADB09 100 CADB09 100 IORB 000 DADB11 000 N C OEB 000 CE2B 000 CADB10 100 CDB15 100 CE1B 000 CDB14 100 CDBO07 100 OO0O0O0 0 000000 0 CDA13 100 CDA06 100 CDA12 100 CDA05 100 CDA11 100 CDA04 100 CDA1 000 CDA03 100 GND GND GND CDB13 100 CDB06 100 CDB12 100 CDB05 100 CDB11 100 CDB04 100 CDB1 000 CDB03 100 GND GND GND 610CT C 10 C 11 610CT PJ12 LCD Connector 40 pin Signal name LCDV SHFCLK 140 Table C 10 LCD connector pin assignments 40 pin Signal Name LCDV ENDATA 140 GND PNLD23 140 GND PNLD22 140 GND PNLDO03 140 GND PNLDO02 140 GND PNLDO04 140 GND PNLDO5 150 GND PNLD10 140 GND PNLD06 150 GND PNLD11 150 GND PNLDO7 140 GND PNLD14 140 GND PNLD12 140 GND PNLD15 140 GND PNLD13 140 GND PNLD18 140 GND PNLD19 140 GND PNLD20 140 GND PNLD21 140 OO0O0O0C0O0O 00 00 00000000 0 PJ13 LCD Connector 5 pin Table C 11 LCD connector pin assignments 5 pin Sinai ame 10 Pin No Signal Name DSPV 002 DSPV GND 004 GND BRIGHT 100 C 9 C 12 PJ14 PS I F Connector 60 pin Table C 12 PS I F connector pin assignments 60 pin Signal name VCC VCC VCC IPSSWL 000 IPSSWR 000 IPSSEL 100 SUBBAT DCIN DCIN DCIN GND GND GND B5V PVT PCLR 000 PSBUSY 000 RCLR 100 PSSMI 000 GND GND GND LOBAT 000 ENVCC 000 PSBEEP 000 PSSD 100 B3V CPUV CPUV CPUV
35. GND GND GND CDA2 000 WPA 100 CDA10 100 CDA02 100 CDA09 100 CDA01 100 CDA08 100 CDA00 100 BVDA1 100 PJ11 PCMCIA Connector 140 pin Signal Name GND GND GND SDB2 000 WPB 100 CDB10 100 CDBO02 100 CDB09 100 CDB01 100 CDB08 100 CDB00 100 BVDB1 100 Table C 9 PCMCIA connector pin assignments 140 pin 1 2 CADAO0 100 BVDA2 100 1 100 REGA 000 CADA02 100 N C CADAO3 100 WAITA 000 CADA04 100 CRESTA 100 CADA05 100 N C CADB00 100 BVDB2 100 CADB01 100 REGB 000 CADB02 100 N C CADB03 100 WAITB 000 CADB04 100 CRESTB 100 CADB05 100 N C CADA06 100 CADA25 100 CADAO07 100 CADA24 100 CADA12 100 CADA23 100 CADA15 100 CADA22 100 CADA16 100 MCVPPA MCVPPA MCVCCA CADBO06 100 CADB25 100 CADBO07 100 CADB24 100 CADB12 100 CADB23 100 CADB15 100 CADB22 100 CADB16 100 MCVPPB MCVPPB MCVCCB 7 C 8 Signal name MCVCCA CADA21 100 BSYA 000 CADA20 100 WEA 000 CADA19 100 CADA14 100 CADA18 100 CADA13 100 CADA17 100 CADA08 100 Signal MCVCCB CADB21 100 BSYB 000 CADB20 100 WEB 000 CADB19 100 CADB14 100 CADB15 100 CADB13 100 CADB17 100 8 100 Table C 9 PCMCIA connector pin assignments 140 pin 2 2 IOWA 000 CADA09 100 IORA 000 CADA11 100 N C OEA 000 CE2A 000 CADA10 100 CDA15 100 CE1A 000 CDA14 100 C
36. HHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH Pressing Enter displays the following message Setting the color CRT 1 yes 2 no If an external CRT display is connected to the 610CT choose 1 to display the following message Border color test 7 times press Enter key Press Enter to execute the border color test To exit this subtest and return to the DISPLAY TEST menu press Ctrl 4 Break 318 a 610CT Subtest 10 Subtest 11 610CT LED DAC Pallet This subtest checks the indicator icons Caps Lock Overlay and Num Lock by key operation Caps Num Overlay LED test 1 Press Caps Lock key Caps on off 2 Press Fn 10 key Arrow on off 3 Press F11 key Num on off PRESS Enter KEY Press Enter to display the following two messages After pressing Enter it writes the 2A and 15 data to 6 bit of 256x3 RGB then reads new data and compares the result with original data DAC pallet W R CMP test about 5 seconds Processor latch test Processor latch test 1 256 times 2 endless To exit press Ctrl Br
37. HKBEEP 100 GND GND IPSSELR 000 GND GND PVT GND ATBEEP 100 VCC VCC 610CT C 18 PJ21 Sub battery Connector 2 pin Table C 18 Sub battery connector pin assignments 2 pin oe 9e C 19 PJ22 DC Jack Connector 3 Table C 19 DC jack connector pin assignments 3 pin vame 10 Fimo vo 002 GND 001 DCIN 003 GND 610CT C 13 Appendix D 610CT Keyboard Scan Character Codes Table D 1 Scan codes set 1 and set 2 1 3 gt sS e T Y U o gt Make Code set 1 Break Make Code set 2 Break D 1 D 2 Table D 1 Scan codes set 1 and set 2 2 3 Enter Shift L No 102 key Z Shift R Ctrl Alt L Space ALT R Ins Del Make Code set 1 Break Make Code set 2 Break 610CT Table D 1 Scan codes set 1 and set 2 3 3 Code set 1 Make F1 F2 F3 F4 F5 F6 F7 F8 F9 F10 F11 F12 PrintSc Pause Fn Notes 1 2 2 4 5 6 7 Scan codes differ by mode Scan codes differ by overlay function Combination with Fn key makes different codes Break Fn key does not generate a code by itself This key corresponds to key No 42 in 102 key model Refer to tabl
38. L inverter board specifications Specifications Voltage 10 Power 3 Voltage 1 100 r m s Current 5 0 Frequency 44 112 amp I0CT 1 7 Power Supply The power supply provides five kinds of voltages to the 610CT system board The power supply has one microprocessor which operates at 500 KHz and performs the following func tions 1 Determines if the AC adapter or battery is connected to the computer 2 Detects DC output and circuit malfunctions 3 Controls the LED icon and speaker 4 Turns the battery charging system on and off and detects a fully charged battery 5 Determines if the power can be turned on and off 6 Provides more accurate detection of a low battery 7 Calculates the remaining battery capacity The power supply output rating is specified in table 1 5 Table 1 5 Power supply output rating DC voltage V System logic FDD HDD Regulation tolerance Display RS 232C CPU RAM VGA l O 610CT 1 8 Batteries The 610CT has three types of batteries 1 Main battery pack Backup battery Real Time Clock RTC battery These battery specifications are listed in table 1 6 Table 1 6 Battery specifications Battery name Material Output voltage Capacity Main battery Lithium lon 4 000 mAH Backup battery Nickel Metal Hydride 110 mAH RTC battery Nickel Metal Hydride 30 mAH 1 8 1 Main Battery The r
39. Replace the battery pack and optional memory module as described in sections 4 2 and 4 3 412 610CT 4 5 Keyboard Removing the Keyboard To remove the 610CT keyboard follow the steps below and refer to figures 4 9 through 4 12 1 Turn off the power to 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory module and optional PCMCIA card as described in sections 4 2 4 3 and 4 4 3 Open the display if it closed 4 Use a thin metal tool to unlatch 12 latches that secure the keyboard cover figure 4 0 Keyboard cover Figure 4 9 Unlatching the keyboard cover 5 Remove one M2x4 screw with washer in front of the keyboard figure 4 10 M2x4 screw with washer Figure 4 10 Removing one keyboard screw 610 7 4 13 6 Insert the thin metal tool between the keyboard and top cover to lift up the key board figure 4 11 Lift up slightly so notches at the back of the keyboard clear corresponding holes on the top cover Do not remove the keyboard cable Figure 4 11 Lifting the keyboard 7 Disconnect the AccuPoint cable from PJ2 and the keyboard cable from PJ7 figure 4 12 Keyboard cable AccuPoint cable PJ2 PJ7 Figure 4 12 Removing the keyboard cable 8 Lift out the keyboard 4 14 aoa naam OL OCT Installing the Keyboard To install t
40. SPLAY NNNNNNNNNNNNNNNNNNNNNNNNNNNNNN NEXT LINE SHOWS INTENSIFIED DISPLAY NEXT LINE SHOWS REVERSE DISPLAY RRRRRRRRRRRRRRRRRRRRRRRRRRRRRR NEXT LINE SHOWS BLINKING DISPLAY BBBBBBBBBBBBBBBBBBBBBBBBBBBBBB 00 08 BLACK 01 09 BLUE 04 OC RED 05 OD MAGENTA 02 OA GREEN 03 OB CYAN 07 OF WHITE PRESS Enter KEY 610CT Subtest 03 610CT After pressing Enter 16 colors or 16 gray scales of mode 13h appear in the 320x200 graphics mode as shown below BLACK BLUE GREEN CYAN RED MAGENTA BROWN WHITE GRAY LIGHT BLUE LIGHT GREEN LIGHT CYAN LIGHT RED LIGHT MAGENTA YELLOW INTENSE WHITE Pressing Enter toggles between the two tests To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break Character Set In this subtest the character set addressed to FFh is displayed in the 40 25 character mode as shown below CHARACTER SET IN 40 25 FTL Oe tat HOS 0123456789 lt gt 7 ABCDEFGHIJKLMNO PQORSTUVWXYZ _ abcdefghijklmnopaqrstuvw xyz i Gu amp amp ta amp c sBaQ111AA mr6o00009O Uc twrPtf SIGGAN goer 44 Adina iin 24 IE rr ere Hill Foc Bor Xo r26056esen Jemt JU 4 Press Enter KEY To exit this subt
41. SYSTEM TEST XXXXXXX PT610CT DIAGNOSTIC TEST VX XX Ctrl Break test end key stop SUB TEST XX PASS COUNT XXXXX ERROR COUNT XXXXX WRITE DATA XX READ DATA XX ADDRESS XXXXXX STATUS SUB TEST MENU 01 ROM checksum 02 HW status 03 Version check 04 Fan ON OFF 05 Thermistor check 99 Exit to DIAGNOSTIC TEST MENU Select items Enter Specify Esc oEx t one shown above NOTE The menu displayed by your 610CT may be slightly different from the 610CT 3 3 Select the desired subtest number from the subtest menu and press Enter The following message will appear TEST LOOP YES Selecting YES increases the pass counter by one each time the test cycle ends and then restarts the test cycle Selecting NO returns the subtest menu to the main menu after the test is complete The following message will appear ERROR STOP YES Use the left or right arrow keys to move the cursor to the desired option and press Enter Selecting YES stops the test program when an error is found and displays the operation guide on the right side of the display screen as shown below ERROR STATUS NAME HALT OPERATION 1 Test end 2 Continue 3 Retry These three selections have the following functions Terminates the test program and exits to the subtest menu 2 Continues the test 3 Restarts the test from the error Selecting NO keeps the test runnin
42. Section 3 16 Sequential Read This subtest is a sequential reading of all the tracks on the HDD starting at track 0 When all the tracks on the HDD have been read the test starts at the maximum track and reads the tracks on the HDD sequentially back to track 0 Address Uniqueness This subtest writes unique address data to each sector of the HDD track by track The data written to each sector is then read and compared with the original data There are three ways the HDD can be read Forward sequential Reverse sequential Random Random Address Data This subtest writes random data to random addresses on the HDD cylinder head and sector This data is then read and compared to the original data 3 27 Subtest 04 Subtest 05 Subtest 06 Subtest 07 Subtest 08 Subtest 09 Subtest 10 3 28 Cross Talk amp Peak Shift This subtest writes eight types of worst pattern data shown below to a cylinder then reads the data while moving from cylinder to cylinder Worst pattern data Cylinder B5ADAD 0 cylinder 4A5252 1 oylinder EB6DB6 2 cylinder 149249 3 cylinder 638638 4 cylinder 9C49C4 5 cylinder 2DB6DB 6 cylinder 24924 7 cylinder Write read compare CE This subtest writes BSADADh worst pattern data to the CE cylinder on the HDD then reads the data from the CE cylinder and compares it with the original data Write specified address This subtest writes
43. Signal Name VCC VCC VCC KBCMDT 100 KBCMCK 100 MOUSCK 100 MOUSDT 100 DCIN DCIN DCIN GND GND GND GND PVT ACPUTH DCGRN 100 DCRED 100 GND GND GND GND PSRD 100 SUSSTA 100 PNLOF 000 P12V B3V CPUV CPUV CPUV 610CT C 13 PJ15 RTC Battery Connector 3 pin Table C 13 RTC battery connector pin assignments 3 pin Puis conie doi EI C 14 PJ16 Fan Connector 3 pin Table C 14 Fan connector pin assignments 3 pin Pin Wo name Pin No Signal Name 001 FANON 002 002 GND 003 GND C 15 PJ17 Panel Sensor Connector 3 pin Table C 15 Panel sensor connector pin assignments 3 pin icm ree te I C 16 PJ18 Speaker Connector 2 pin Table C 16 Speaker connector pin assignments 2 pin 610CT C 17 PJ20 Sound I F Connector 70 pin Signal name SA05 100 GND SA07 100 SA09 100 GND SD00 100 002 100 004 100 006 100 GND SA04 100 SA02 100 Table C 17 Sound I F connector pin assignments 70 pin Signal Name SA06 100 GND SA08 100 AEN 100 GND 001 100 003 100 005 100 007 100 GND SA03 100 SA01 100 5 00 100 IORD 000 DACK1 000 BLAWR 000 GND IRQ9 100 IRQ7 100 DRQO 100 GND SDMUTE 100 SPKP 100 GND IOWR 000 DACK0 000 RESET 100 GND C14R3M 101 IRQ5 100 IRQ10 100 DRQ1 100 GND SPKVOL 100 SPKM 100 GND CSPTON 000 PSPNBP 100 GND IPSSELL 000 GND GND GND GND GND VCC VCC
44. T 3 Remove the external cable and PCMCIA 4 Connect the external 3 5 inch floppy disk drive to 610CT 5 Turn on the power while holding down the F12 key Keep holding down the key until the system speaker sounds a beep 6 When the message is displayed insert the BIOS rewrite disk into the FDD Press Enter key to start the BIOS rewrite 7 When the BIOS rewrite is finished eject the BIOS rewrite disk and press the reset switch to restart the system 610CT
45. TC and backup batteries top cover HDD keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 9 back through 4 2 427 4 11 Power Supply Board Removing the Power Supply Board To remove the 610CT power supply board follow the steps below and refer to figure 4 21 1 4 28 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer Remove the battery pack optional memory card optional PCMCIA card key board HDD top cover RTC and back up batteries AccuPoint control button contact and sound board as described in sections 4 2 through 4 10 Lift out the sound board support Disconnect the power supply cable from PJ14 on the system board Lift out the power supply board Power supply board Sound board support Figure 4 21 Removing the power supply board 610CT Installing the Power Supply Board To install the 610CT power supply board follow the steps below and refer to figure 4 21 610CT 1 2 Seat the power supply board in the bottom cover Connect the power supply cable to PJ14 on the system board Replace the sound board support Replace the sound board AccuPoint control button contact RTC and back up batteries top cover HDD keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 10 back through 4 2 4 29 4 12 System Board
46. and J to move be tween items in a column 2 Press either the spacebar or BkSp to change the value Accepting Changes and Exiting the SETUP Window 1 Press End to accept the changes you made If the changed item does not require the system to reboot the following message is displayed Are you sure Y N If the changed item requires the system to reboot the following message is dis played Are you sure Y N The changes you made will cause the system to reboot The changes you made will cause the system to reboot 3 52 6 2 To make other changes press N Repeat the steps above 3 To accept the changes press Y NOTE You can press Esc to quit at any time without saving changes SETUP asks you to confirm that you don t want to save your changes The Factory Preset Configuration When you access SETUP the current configuration is displayed 1 To show the factory preset configuration press Home 2 accept the default settings press End and then press Y SETUP Options The SETUP screen is divided into functionally related groups This section describes each group and its options 1 Memory This group lists the computer s memory allocations You cannot change these values a Total This field displays the total amount of memory installed and is automatically calculated by the computer b Base Th
47. bles may be disconnected Disassemble the display unit and check the following cable connections Refer to chapter 4 Replacement Procedures for more information about how to disassemble the computer FL inverter board System board LCD unit Display switch Figure 2 3 Display connection If any of these cables is not connected firmly reconnect it and repeat Procedures 1 and 2 If the problem still exists perform Procedure 4 Procedure 4 Replacement Check The FL FL inverter board LCD module and system board are connected to the display circuits Any of these components may be damaged Refer to chapter 4 Replacement Proce dures for instructions on how to disassemble the computer and then perform the following checks If the FL does not light perform Check 1 If characters are not displayed clearly perform Check 3 If some screen functions do not operate properly perform Check 3 If the FL remains lit when the display is closed perform Check 4 Check 1 Replace the FL unit with a new and test the display again If the problem still exists perform Check 2 2 26 IOC Check 2 Check 3 Check 4 Check 5 Check 6 610CT Replace the FL inverter board with a new one and test the display again If the problem still exists perform Check 3 Replace the LCD module with a new one and test the display again If the problem still exists perform Check 4 Replace the panel sensor swi
48. c d e f Drive number select 1 1 2 2 Select a drive number and press Enter The following message will appear Interleave number 1 1 8 Select an interleave number 1 8 and press Enter Pressing only Enter selects 1 Unlock format select 1 no 2 yes Select whether the disk has an unlock format NOTE This option appears only when an HDD manufactured by JVC is installed For JVC HDDs which are the only disks with unlock formats you must select 2 yes If 1 is selected with a JVC disk an error will be generated The system defaults to 1 and this message does not appear when other disks are installed Bad track register Next the Bad Track register prompt will appear as shown below Enter the cylinder and head numbers of bad tracks and press Enter Note that if there are no bad tracks pressing Enter alone is the same as executing All Track Format described in item e below WARNING Current DISK data will be completely destroyed Press Bad cylinder number dddd key Press Bad head number dd key Enter the cylinder and head number in the format above in decimal notation Repeat for each bad track you want to format After entering the bad tracks press Enter to execute the format All track format All tracks are formatted as good tracks except those registered as bad tracks in item d above or those identified as bad tracks in track verification de scribed in ite
49. ced keyboard Batteries Three different batteries a main battery a backup battery and a Real Time Clock RTC battery Personal Computer Memory Card International Association PCMCIA card slot Two PCMCIA slots enable you to install an MiNC Toshiba card modem or other industry standard PCMCIA release 2 01 card Parallel port One Centronics compatible parallel interface port RS 232 C port One 9 pin serial interface port 3 5 inch external FDD port One 3 5 inch external FDD port Port replicator port One port replicator port enables connection of an optional port replicator or external monitor adapter The port replicator allows connection of a PS 2 mouse PS 2 key board external monitor printer DC IN serial I O and 3 5 inch FDD Memory module slot One Toshiba optional memory module slot enables you to install a Toshiba optional memory module AccuPoint A pointer control stick located in the center of the keyboard Sound System A Sound Blaster Pro compatible sound system to give multimedia capability with a built in microphone and speaker The sound system provides a volume control dial and headphone and microphone jacks to connect external audio devices 610CT The 610CT Personal Computer is shown in figure 1 1 Figure 1 1 610CT The 610CT system configuration is shown in figure 1 2 Fort Repicator parallel device PCMCIA Card Memory Module Int HDO AC Adapter x Mcd Syst
50. cription The System Configuration program contains the following configuration information for the 610CT 1 BIOS ROM version 2 Boot ROM version 3 KBC version 4 PS Micom Version 5 Base memory size 6 The number of floppy disk drives 7 The number of ASYNC ports 8 number of hard disk drives 9 The number of printer ports 10 Extended Memory Size 11 CPU type 12 The number of Co processors 3 23 2 Operations Selecting 8 from the DIAGNOSTIC MENU and pressing Enter displays the following system configuration SYSTEM CONFIGURATION BIOS ROM VERSION VX XX BOOT ROM VERSION VX XX KBC VERSION VX XX PS MICOM VERSION VX XX 1 MATH CO PROCESSOR 639KB MEMORY XXXXXKB EXTENDED MEMORY FLOPPY DISK DRIVE S 1 ASYNC ADAPTER 1 HARD DISK DRIVE S 1 PRINTER ADAPTER 2 PCMCIA SLOTS 1 SOUND SYSTEM Press Enter Key Press Enter to return to the DIAGNOSTIC MENU 3 50 6 3 24 SETUP 3 24 1 This program displays the current system setup information as listed below 610CT 1 Function Description Memory a Total b Base c Extended Memory d Shadow BIOS ROM Display a Display Adapter b LCD Display Mode c Display Colors d Power On Display e Text Mode Stretch Hard Di
51. ctioning properly Start with Procedure 1 and continue with the other procedures as instructed Procedure 1 External Monitor Check Procedure 2 Diagnostic Test Program Execution Check Procedure 3 Connector Check Procedure 4 Replacement Check Procedure 1 External Monitor Check Connect the external monitor adapter to the computer s port replicator port and an external monitor to the external monitor adapter then boot the computer The computer automati cally detects the external monitor even if Resume mode is enabled If the external monitor works correctly the internal LCD display may be damaged Go to Procedure 3 If the external monitor appears to have the same problem as the internal LCD the display controller may be damaged Go to Procedure 2 Procedure 2 Diagnostic Test Program Execution Check The Display Test program is stored on the 610CT Diagnostic Disk This program checks the display controller on the system board After loading Toshiba MS DOS run the Diagnostic Program Refer to chapter 3 Tests and Diagnostics for details If an error is detected go to Procedure 3 If an error is not detected the display is function ing properly 60 2 2 05 Procedure 3 Connector Check The Display unit has an LCD module FL panel close switch and FL inverter board The FL and FL inverter board are connected by cable The LCD module and system board are con nected by signal cable as shown below Any of these ca
52. ctor pin assignments 140 pin 1 2 Signal name Signal Name B3V B3V GND HD36 100 HD35 100 HD37 100 HD34 100 HD38 100 HD33 100 GND B3V HD39 100 HD32 100 HD40 100 HD44 100 B3V HD45 100 B3V GND HD42 100 HD46 100 HD43 100 HD47 100 HD16 100 HD20 100 GND B3V HD17 100 HD21 100 HD18 100 HD22 100 HD19 100 HD23 100 B3V GND HD24 100 HD28 100 HD25 100 HD29 100 HD26 100 HD30 100 GND B3V HD27 100 HD31 100 HD00 100 HD04 100 HD01 100 HD05 100 B3V HGND 02 100 HD06 100 HD03 100 HD07 100 HD08 100 HD12 100 GND B3V HD09 100 HD13 100 HD10 100 HD14 100 HD11 100 C 1 C 2 Signal name HD15 100 GND HD52 100 HD53 100 HD54 100 B3V HD55 100 HD60 100 HD61 100 HD62 100 HD63 100 CAS1 001 Table C 1 SIMM connector pin assignments 140 pin 2 2 Signal Name B3V HD48 100 HD49 100 HD50 100 GND HD51 100 HD56 100 HD57 100 HD58 100 HD59 100 GND 50 001 53 001 CAS5 001 CAS7 001 N C N C N C N C GND 50 001 ERAS1 001 N C N C N C CAS2 001 CAS4 001 CAS6 001 N C N C GND N C N C ERAS2 001 ERAS3 001 N C N C N C N C GND N C GND N C GND MAO00 101 MAO02 101 MA04 101 GND MAO07 101 MAO08 101 MA10 101 N C GND N C GND N C GND 01 101 03 101 05 101 MAO06 101 MAO09 101 MA11 101 GND 610CT C 2 610 PJ2 PRT Connector 25 Signal name STROB
53. d adjustment volume Subtest 03 SINE wave playback This subtest expands the sine wave data table to 64KB and creates sine wave data The play data is transferred between DMA and CODEC and plays the sound It is a long beep Also using the oscilloscope observe the sine waveform 610 7 3533 3 16 Error Code and Error Status Names Table 3 3 lists the error codes and error status names for the Diagnostic Test 3 34 Table 3 3 Error codes and error status names 1 2 Device name COMMON Error code Error status name Data Compare Error System ROM Checksum Error Memory Parity Error Protected Mode Not Changed Memory Read Write Error Cache Memory Error Keyboard Mouse Interface Error IPS Interface Error Interface Error Retransmit Error Mouse Handler Not Supported PS 2 Mouse amp IPS Not Bad Command Address Mark Not Found Write Protected Record Not Found Media Removed DMA Overrun Error DMA Boundary Error CRC Error FDC Error Seek Error FDD Not Drive Error Time Out Error Write Buffer Error Printer Time Out Fault Select Line Out Of Paper Power Off Busy Line DSR On Time Out CTS On Time Out RX READY Time Out TX BUFFER Full Time Out 610CT 610CT Table 3 3 Error codes and error status names 2 2 Device name Async cont Error code Error status name
54. d disk controller status register contents BSY Busy Description 0 HDC is busy 1 HDC is ready DRDY Drive ready 0 Hard disk drive is not ready to accept any command 1 Hard disk drive is ready DWF Drive write fault 0 DWF error is not detected 1 Write fault condition occurred DSC Drive seek complete 0 The hard disk drive heads are not settled over a track 1 The hard disk drive heads are settled over a track DRQ Data request 0 Drive is not ready for data transfer 1 Drive is ready for data transfer CORR Corrected data 0 Other 1 Correctable data error is corrected IDX Index 0 Other 1 Index is sensed 3 36 ERR Error 0 Other 1 The previous command was terminated with some error 610CT BBK1 Bad block mark Table 3 5 Error register contents Description 0 Other 1 A bad block mark is detected UNC Uncorrectable 0 There is no uncorrectable data error 1 Uncorrectable data error has been detected Not used IDNF Identification 0 Other 1 There was no ID field in the requested sector Not used ABRT Abort 0 Other 1 Illegal command error or a drive status error occurred TKOO Track 0 0 The hard disk ha
55. d off as an eight digit binary value for boot mode Figure 2 2 shows the printer port LED Figure 2 2 Printer port LED To use the printer port LED follow these steps 1 Tum on the 610CT power then set to boot mode 2 Turn off the computer s power 3 Plug the printer port LED into the 610CT Printer connector 4 Hold down the space bar and turn on the computer s power 5 Read the LED status from left to right as you are facing the back of the computer 6 Convert the status from binary to hexadecimal notation 7 If the final LED status is FFh normal status go to Procedure 3 8 If the final LED status matches any of the test status values in table 2 1 perform Check 1 NOTE If an error condition is detected by the IRT test the printer port LED displays an error code after the IRT test ends For example when the printer port LED displays 22 and halts the IRT test has already completed the test In this instance the IRT indicates an error has been detected during the next item system memory test 60 211 Table 2 1 Printer port LED boot mode error status 1 2 Error status Test item Message Pre init for warm start test PIT test ER CH 2 OUT 1 ERROR DATA XX E DATA XX PIT initialization PIT function test MEMORY RE First G4KB memory test FIRST 64 System memory initialization Interrupt vector initial
56. disk for 3 5 inch external FDD A cleaning kit to clean the floppy disk drive heads Head Cleaning A PCMCIA wraparound connector for the I O card test PCMCIA test A printer wraparound connector for the printer wraparound test Printer test An RS 232 C wraparound connector for the RS 232 C port wraparound test ASYNC test 09 i ooooooo The following sections detail the tests within the Diagnostic Test function of the DIAGNOS TIC TEST MENU Refer to Sections 3 18 through 3 24 for detailed information on the remaining seven Service Program Module functions 610CT MMMM M 941 3 2 Executing the Diagnostic Test Toshiba MS DOS is required to run the 610CT Diagnostic Test Program To start the Diag nostic Test Program follow these steps 1 Insert the 610CT Diagnostics disk in the computer s external floppy disk drive and turn the computer on 2 At the system prompt change to drive A and type the test command and press Enter The following menu will appear TOSHIBA personal computer PT610CT DIAGNOSTICS version X XX c copyright TOSHIBA Corp 19XX DIAGNOSTICS MENU DIAGNOSTIC TEST HARD DISK FORMAT HEAD CLEANING LOG UTILITIES RUNNING TEST FDD UTILITIES SYSTEM CONFIGURATION EXIT TO MS DOS SETUP 1
57. e The 610CT 3 5 inch external Floppy Disk Drive FDD is a thin high performance reliable drive that supports 720 KB formatted 2DD and 1 44 MB formatted 2HD 3 5 inch floppy disks The 610CT FDD is shown in figure 1 4 Figure 1 4 3 5 inch external FDD The specifications for the FDD are listed in table 1 1 Table 1 1 3 5 inch external FDD specifications 2 MB mode 1 MB mode Storage capacity KB Unformatted Formatted Number of heads 2 Number of cylinders 80 Access time ms Track to track 3 Average 181 181 Head settling time 15 15 Recording track density tpi 135 135 Data transfer rate Kbps 500 250 Rotation speed rpm 300 300 Recording method Modified Frequency Modulation MFM 1 8 14 2 5 Hard Disk Drive The 720 MB Hard Disk Drive HDD is a random access non volatile storage device It has a non removable 2 5 inch magnetic disk and mini winchester type magnetic heads The HDD is shown in figure 1 5 Figure 1 5 2 5 Inch HDD Specifications for the HDD are listed in table 1 2 Table 1 2 2 5 inch HDD specifications MK1724FCV Storage capacity MB Formatted Number of disks Data heads Data surfaces Bytes per sector Rotation speed rpm Recording method 610CT 1 5 Keyboard The 82 USA or 84 European keyboard is mounted on the 610CT system unit The key board is connected to the keyboard controller on
58. e D 6 scan codes with Ctrl key Refer to table D 7 scan codes with Alt key 610CT Make Code set 2 Break D 3 Table D 2 Scan codes with left Shift key Code set 1 Code set 2 Make Break Make Break Note The table above shows scan codes with the left Shift key In combination with the right Shift key scan codes are changed as below With left Shift With right Shift EO AA B6 2 0 36 EO FO 12 EO FO 59 EO 12 59 Table D 3 Scan codes in Numlock mode Code set 1 Code set 2 Make Brea Make Brea 0 4 0 1 O A Table D 4 Scan codes with Fn key Code set 1 Code set 2 Make Break Make Break ENT CTRL LALT ARROW NUMERIC Table D 5 Scan codes in overlay mode Code set 1 Code set 2 Make Break Make Break AXc uUuoOo coccoo GNZIISSS I sS a DEN gt Se Table D 6 Scan codes with Ctrl key Code set 1 Code set 2 Make Break Make Common EO B7 EO AA EO 12 EO 7C 7C EO FO 12 Ctrl E0 B7 E0 7C FO 7C Shift E0 B7 E0 7C FO 7C Alt D4 84 B4 610CT 05 Table D 7 Scan codes with Alt key Key top Make Pause Common E1 ID 45 E1 SD C5 E1 14 77 FO 14 77 Ctrl EO 46 EO C6 EO 7E EO FO 7E This key generates only make codes 0 06 60 Appendix E Key Layout E 1 United States US Keyboard TETTE
59. ead screws Bracket M3x4 flat head screws Figure 4 14 Removing the HDD bracket 610 C T 9 4417 Installing the Hard Disk Drive To install the 610CT hard disk drive follow the steps below and refer to figures 4 13 and 4 14 1 Seat the HDD in its bracket 2 Secure the HDD to the bracket with four M3x4 flat head screws 3 Seat the HDD into the bottom cover making sure to align the connectors 4 Press the HDD gently to secure the connection 5 Secure the HDD bracket with one M2x4 screw 6 Replace the keyboard optional PCMCIA card optional memory module and battery pack as described in sections 4 5 4 4 4 3 and 4 2 mmm 6I0CT 4 7 Top Cover Removing the Top Cover To remove the 610CT top cover follow the steps below and refer to figures 4 15 through 4 17 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card key board and HDD as described in sections 4 2 through 4 6 3 Close the display and turn the computer upside down 4 Remove eight M2x8 silver screws from the bottom of the computer and two M2x6 screws from the battery seating area These screws secure the top cover to the bottom cover figure 4 15 2 8 silver screws 0 2 6 silver screws Figure 4 15 Removing the bottom cover screws
60. eak 3 46 610CT 3 22 Floppy Disk Drive Utilities 3 22 1 Function Description This function formats the FDD copies the floppy disk and displays the dump list for both the FDD and HDD 1 FORMAT NOTE This program is only for testing a floppy disk drive The option is different from the Toshiba MS DOS FORMAT command This program can format a 3 5 inch floppy disk in the following formats a 2D Double sided double density 48 67 5 TPI MFM mode 512 bytes 9 sectors track b 2DD Double sided double density double track 96 135 TPI MFM mode 512 bytes 9 sectors track c 2HD Double sided high density double track 96 135 TPI MFM mode 512 bytes 18 sectors track 2 COPY This program copies data from a source floppy disk to a target floppy disk 3 DUMP This program displays the contents of the 3 5 inch floppy disk and the designated sectors of the hard disk on the display 3 22 2 Operations 1 Selecting 7 from the DIAGNOSTIC MENU and pressing Enter displays the following message FDD UTILITIES 1 FORMAT 2 3 DUMP 9 EXIT TO DIAGNOSTICS MENU 610 C T 347 2 3 3 48 FORMAT program a b c d e Selecting FORMAT displays the following message IAGNOSTICS FLOPPY DISK FORMAT VX XX Drive number select 1 A 2 B Select a drive number to display the following message
61. eak Then press Enter Color display This subtest sets the video mode to 13 and displays color code 0 to 63 at the same time then displays seven screens The first shows many colors at once the next three display 64 shades of red green and blue successively and the last three display 64 shades of red green and blue Also it sets the video mode 5F and displays 256 colors Press Enter to change the display Press Ctrl Break to exit 3 19 3 8 Floppy Disk Test CAUTION Before running the floppy disk test prepare a formatted work disk Remove the Diagnostics Disk and insert a work disk into the FDD The contents of the floppy disk will be erased To execute the Floppy Disk Test select 5 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen The Floppy Disk test contains five subtests that test the 610CT external floppy disk drive The following messages will appear after selecting the Floppy Disk Test from the DIAGNOSTIC TEST MENU Answer each question with an appropriate response to execute the test 1 Select the test drive number of the floppy disk drive to be tested and press Enter Test drive number select 1 FDD 1 2 FDD 2 0 FDD1 amp 2 2 Select the media type of the floppy disk in the test drive to be tested and press Enter Media in drive X mode 0 2DD 1 2D 2 2D 2HD 2DD 3 2HD 3 Select the track you want the test to start on and press Enter Simply pr
62. em Board Speaker AccuPoint Control Button PJ3 Ponet Supply Backup Battery Sound Board in Battery Pack Keyboard Battery Microphone 1 i t LED Board H 1 Figure 1 2 610CT system unit configuration 6107 1 2 System Unit Block Diagram Figure 1 3 is a block diagram of the 610CT system unit 5 5V 45V VCC 5V MSV Power supply microprocessor 5V B3V 3 3 5 BIOS ROM CPUV 2 9V lt 28k x abit B3V CPU B3V CPUV Pentium 90 System Memory B3V Optional Memory T SCPCNT1 GA F65546 TFT color LCD 5 SISCNT1 GA Serial Port 9 Pin B5 Printer Port 25 Pin T6W23A S o DMA x2 PIC x 2 PIT x 1 SIOx2 Ex FDD 3 5 gt FOC x1 VFOx 1 MCV PS u com Speaker H D D 2 5 RTC3V L u RTC Pointing Stick IPS Cont PS 2 Mouse C Int Keyboard PS 2 Keyboard B5V PCMCIA Cont GA PCMCIA CARD os B5V Gane Cont GA B5V Headphone ENDS Sound Microphone Figure 1 3 610CT system board block diagram 610CT The 610CT system board has the following major components 610CT One Intel Pentium 90 MHz with VRT 64 bit microprocessor Intel Pentium processor operates at 90 MHz and 2 9 volts Standard RAM 8 MB four 1Mx16 bit chips 3 3 volt operation No parity bit Access
63. emovable main battery pack is the computer s main power source when the AC adapter is not attached The main battery recharges the backup battery when the system s power is on The backup and main battery maintain the state of the computer when you enable AutoResume Battery Indicator The Battery indicator is located on the front side of the 610CT The indicator shows the status of the removable battery pack power supply and AC adapter The status of each can be determined by color Orange battery is being charged AC adapter is attached Green battery is fully charged AC adapter is attached Nolight The AC adapter is disconnected from the computer or the AC adapter is connected but it cannot charge the battery for one of the following reasons The battery is extremely hot Allow the computer and the battery to reach room temperature before attempting to charge the battery The battery is almost fully discharged The battery will not begin charging immediately in this state it will begin charging a few minutes after the AC adapter is connected The AC adapter is not receiving power 114 60 7 1 8 2 Battery Charging Control Battery charging is controlled by a microprocessor that is mounted on the power supply The microprocessor controls whether the charge is on or off and detects a full charge when the AC adapter and battery are attached to the computer The system c
64. erial port and the PCMCIA card 610 C T 3 55 3 56 b c Parallel Port This option sets the address for the parallel port The options are LPTI 378H Sets the address to 378H Default LPT2 278H Sets the address to 278H LPT3 3BCH Sets the address to 3BCH When you select one of the above options except for Not used a subwindow similar to the one below appears to let you set the parallel port mode The options for this setting are Output default and Bi Directional Option Mode Output For most printers the port should be set to Output With some other parallel devices the setting should be Bi Directional Sound system This item appears only when an optional sound card is installed It allows you to enable or disable the sound card ports Address IRQ DMA Enables port Default Disabled Disables port When Enabled is selected a subwindow similar to the one below appears to let you set the I O address Interrupt level and DMA channel for the sound card SOUND SYSTEM Address 0220H IRQ10 Interrupt Level DMA Channel I O address Use this option to set the I O address from among the following settings 0220h Default 0230h 0240 0250h Interrupt level This option sets the interrupt level for the sound system The available settings are IRQS IRQ7 IRQ9 IRQ10 Default 610CT 610CT NOTE Sound Blaster compatible software uses IRQ7 as the default If
65. essing Enter sets the start track to zero Test start track Enter 0 dd 00 79 4 The floppy disk test menu will appear after you select the start track number Select the number of the subtest you want to execute and press Enter The following message will appear during the floppy disk test FLOPPY DISK XXXXXXX PORT G 610CT DIAGNOSTIC TEST VX XX Ctrl Break test end key stop SUB TEST XX PASS COUNT XXXXX ERROR COUNT XXXXX WRITE DATA XX READ DATA XX ADDRESS XXXXXX STATUS The first three digits in the ADDRESS number indicate which cylinder is being tested The fourth digit indicates the head and the last two digits indicate the sector being tested The first digit in the STATUS number indicates the drive being tested and the last two digits indicate the error status code as explained in table 3 3 3 20 M 610CT Subtest 01 Subtest 02 Subtest 03 Subtest 04 Subtest 05 610CT Sequential Read This subtest performs a Cyclic Redundancy Check CRC that continuously reads all the tracks on a floppy disk The following tracks are read according to the media type in the floppy disk drive Double sided double density 2D Tracks 0 to 39 Double sided double density double track 2DD and double sided high density double track 2HD Tracks 0 to 79 The start track is specified w
66. est and return to the DISPLAY TEST menu press Ctrl Break 3 15 Subtest 04 Subtest 05 3 16 80x25 30 Character Display mode 3 12 In this subtest the character string is displayed shifting one character to the right line by line in the 80x25 and 80x30 character modes as shown below 80 XX CHARACTER DISPLAY 012345678901234567890123456789012345678901234567890123456789012345678901234567 8 0123456789 lt gt GABCDEFGHIJKLMNOPORSTUVWXYZ N abcdefghijklm I 4 5 amp 01234567 4 58 012345678 5567 0123456789 amp 0123456789 0123456789 amp 0123456789 0123456789 lt 0123456789 lt gt 0123456789 lt gt 89 lt gt ABCDEFG 9 lt gt ABCDEFGH HIJKLMNOPQRSTUVWXYZ N abcdefghijklmn JKLMNOPORSTUVWXYZ N abcdefghijklmno lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcdefghijklmnop 7 lt gt ABCDEFGHIJ lt gt ABCDEFGHIJK gt ABCDEFGHIJKL gt ABCDEFGHIJKLMNOPORSTUVWXYZ KLMNOPORSTUVWXYZ N abcdefghijklmnopq LMNOPQRSTUVWXYZ _ abcdefghijklmnopqr NOPQRSTUVWXYZ _ abcdefghijklmnopqrs abcdefghijklmnopqrst 6ABCDEFGHIJKLMNOPQRSTUVWXYZ N abcdefghijklmnopqrstu ABCDEFGHIJKLMNO PORSTUVWXYZ N abcdefghijklmnopqrstuv 0123456789 lt gt ABCDEFGHI JKLMNOPORSTUVWXYZ _ abcdefghijklmnopgqrstuvw 012345
67. execute this subtest the PCMCIA wraparound card is required Subtest 01 PCMCIA wraparound test This test checks the following signal lines of the PCMCIA slot Address line REG CE 1 CE 2 line Data line Speaker line Wait line BSY BVDI line This subtest is executed in the following order Address Contents Address line REG CE 1 CE 2 nn A0 90 80 00 Data line wwewrite data rr read data Speaker line Wait line 40 lt xx lt 80 Other lines BSY BVD1 nn 21 00 332 aoe 61 OCT 3 15 Sound Test To execute the Sound test select 12 from the DIAGNOSTICS TEST MENU press Enter and follow the directions on the screen The Sound test contains three subtests that test the 610CT series Sound functions Subtest 01 CODEC REC PLAY NOTE To execute this subtest the internal microphone and internal headphone or internal speaker are required Tests the functions of the Codec ES688 A D D A converter At the same time tests the microphone and headphone terminals When you execute this subtest the following message is displayed Quick REC amp PLAY for ES488 688 Press any key to REC After pressing any key start the recording and immediately play the sound It takes three seconds Subtest 02 FM synthesizer Tests the OPL YMF262 functions Connect the headphone and check the scale for the right and left sides Also check the soun
68. ey When the read information is higher the display is unchanged 00 OK V1 10 00 OK V1 00 1 26 NG V1 00 153594 OK 1432 ROM BIOS Version BOOT ROM Version KBC Version PS Micom Version Reference data Current data 610CT 37 Subtest 04 Fan on off This subtest checks fan operation The fan cable is securely connected to PJ16 on the system board When you execute this subtest the following message appears Fan ON Press Enter key When you press Enter the fan should spin Fan OFF Press Enter key When you press Enter the fan should stop Subtest 05 Thermistor check This subtest checks the thermistor that controls CPU temperature The ther mistor cable connects to PJ23 on the system board 38 MM 60 3 5 Memory Test To execute the Memory Test select 2 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen Move the highlight bar to the subtest you want to execute and press Enter Subtest 01 Subtest 02 Subtest 03 Subtest 04 610CT Constant data This subtest writes a 256 byte unit of constant data to conventional memory 0 to 640 KB then reads the new data and compares the result with the original data The constant data is FFFFh AAAAh 5555h and 0000h Address pattern data This subtest writes address pattern data created by the exclusive ORing XORing to the address segme
69. firmly connect it Perform Procedure 1 again If the keyboard is still not functioning properly perform Check 2 Check 2 The keyboard controller on the system board may be damaged Replace the system board with a new one Refer to chapter 4 for more information If the keyboard is still not functioning properly perform Check 3 Check 3 Make sure the IPS cable is not damaged and is connected to the power supply board IPS Power supply board If this cable is damaged replace the keyboard with a new one If the cable is disconnected firmly connect it Perform Procedure 1 again If the keyboard is still not functioning properly perform Check 4 61002 223 Check 4 IPS controller on the power supply board may be damaged Replace the power supply board with a new one Refer to chapter 4 for more information If the keyboard is still not functioning properly perform Check 5 Check 5 accupoint control button contact is connected to the sound board The accupoint control button contact may be damaged Replace it with a new one Refer to chapter 4 for more information If the keyboard is still not functioning properly perform Check 6 Check 6 The sound board may be damaged Replace the sound board with a new one Refer to chapter 4 for more information If the problem still exists other FRUs may be damaged mma 2 8 Display Troubleshooting This section describes how to determine if the 610CT display is fun
70. format Pressing Enter toggles between the time and the date To exit press Ctrl Break Subtest 02 Backup Memory This subtest performs the following backup memory check Writes 1 bit of on data to address O1h through 80h Writes 1 bit of off data to address FEh through 7Fh Writes the data pattern AAh through 55h to the RTC 50 byte memory address OEh to 3Fh The subtest then reads and compares this data with the original data To exit press Ctrl Break 610 C T ee 329 Subtest 03 Real Time Carry CAUTION When this subtest is executed the current date and time are erased This subtest checks the real time clock increments making sure the date and time are displayed in the following format Current Current date 12 31 1994 time 23 59 58 Pressing Enter displays the following Current Current date 01 01 1995 time 00 00 00 PRESS Enter KEY TO EXIT TEST Press Ctrl Break to exit 3 30 1 A oo aaa 61 OCT 3 13 NDP Test To execute the NDP test select 10 from the DIAGNOSTICS TEST MENU press Enter and follow the directions on the screen The NDP test contains one subtest that tests the 610CT NDP functions Subtest 01 NDP This test checks the following NDP functions Control word Status word Bus Addition Multiplication DODCUOLCDU Press Ctrl Break to exit 610 C T 3 3 14 Expansion Test NOTE To
71. formatted as a bad track use this option to change the track to a good track Bad track FORMAT This option formats a specified cylinder and track as a bad track If a bad track is detected use this option to label it as a bad track Bad track CHECK This option searches the hard disk for bad tracks by reading data to all the tracks on the hard disk A list of bad tracks is displayed when the program is complete If an error other than a bad track is detected the program is automatically termi nated Operations CAUTION After the HDD has been formatted execute the Toshiba MS DOS FDISK command to partition the HDD Next execute the Toshiba MS DOS FORMAT com mand Refer to the Toshiba MS DOS manual for more information about using these commands Selecting TEST 2 and pressing Enter in the DIAGNOSTIC MENU displays the following messages DIAGNOSTICS HARD DISK FORMAT VX XX 1 All track FORMAT 2 Good track FORMAT 3 Bad track FORMAT 4 Bad track CHECK 9 Go to TEST MENU Woe Select items Enter Finish Esc Exit 1 All track FORMAT 610CT Pressing 1 selects All track FORMAT which lets you format the entire disk All track FORMAT Drive 1 HDD 2 Non Cylinder XXXX Head XX Sector XX Model name gt gt gt 3 39 3 40 The following selections also appear at the bottom of the screen in succession a b
72. fully charged If the Battery LED indicator glows amber the AC adapter is connected and the battery is being charged If the Battery LED indicator does not glow go to Check 1 Check 1 Check 2 Check 3 Check 4 Check 5 2 6 Make sure the AC adapter cable and AC cord are firmly plugged into the DC IN socket and wall outlet If these cables are connected correctly go to Check 2 Make sure the battery pack is installed in the computer correctly If the battery pack is installed correctly go to Check 3 Remove the battery pack and check that the battery and system board terminals are clean and not bent If the battery and or terminal appears dirty clean it them gently with a cotton swab dipped in alcohol If either terminal looks bent or damaged replace the battery or the system board If the terminals are clean and not bent go to Check 4 Connect a new AC adapter If the Battery LED indicator still does not glow go to Check 5 Install a new battery pack If the Battery LED indicator still does not glow go to Procedure 3 610CT Procedure 3 Connection and Replacement Check The power supply board is connected to the system board This connection may become damaged or disconnected from the system board Disassemble the 610CT following the steps described in chapter 4 Replacement Procedures and perform the following checks Check 1 sure the power supply board and system board are firmly connected
73. g even if an error is found Use the arrow keys to move the cursor to the desired option and press Enter Table 3 1 in section 3 3 describes the function of each test on the subtest menu Table 3 3 in section 3 16 describes the error codes and error status for each error 610CT 3 3 Subtest Names Table 3 1 lists the subtest names for each test program in the DIAGNOSTIC TEST MENU Table 3 1 Subtest names 1 2 Test name Subtest No Subtest item SYSTEM ROM checksum H W status Version check Fan on off Thermistor check MEMORY RAM constant data RAM address pattern data RAM refresh Protected mode Memory module Cache memory KEYBOARD Pressed key display 82 84 Pressed key code display PS 2 Mouse connect check Pointing Stick check DISPLAY VRAM read write Character attributes Character set 80 25 30 Character display 320 200 Graphics display 640 200 Graphics display 640 350 480 Graphics display Display page H pattern display Border color LED DAC pallet Color display Sequential read Sequential read write Random address data Write specified address Read specified address PRINTER Ripple pattern Function Wrap around 610CT 35 3 6 Test name Table 3 1 Subtest names 2 2 Subtest No Subtest item Wrap around board Board 1 lt gt board 2 Point to point send Point to point receive Interrupt test Sequential read Address uniqueness Random add
74. harge Data preservation period full charge 8H 1 8 4 RTC Battery The RTC battery provides power to keep the current date time and other setup information in memory while the computer is turned off Table 1 9 shows the charging time and data preser vation period of the RTC battery Table 1 9 RTC battery charging data preservation time RTC Battery Time Charging Time Power On 70 H Power Off Doesn t charge Data preservation period full charge 1 month 1 16 2 1 Troubleshooting Chapter 2 describes how to determine if a Field Replaceable Unit FRU in the 610CT is causing the computer to malfunction The FRUs covered are 1 2 6 Power Supply System Board Floppy Disk Drive Hard Disk Drive Keyboard Display The Diagnostics Disk operations are described in Chapter 3 and detailed replacement proce dures are given in Chapter 4 The following tools are necessary for implementing the troubleshooting procedures 1 2 10 11 610CT A 610CT Diagnostics Disk A Phillips screwdriver 2 mm A Toshiba MS DOS system disk s A 2DD or 2HD formatted work disk for floppy disk drive testing A cleaning kit for floppy disk drive troubleshooting A printer port LED An RS 232 C wraparound connector A printer wraparound connector A multimeter An external monitor adapter An external monitor 2 1 2 2 Troubleshooting Flowchart Use the flowchart in figure 2 1 as a gu
75. harges the battery using quick charge or trickle charge When the AC adapter is attached there are two types of charge quick charge when the system is powered off and trickle charge when the system is powered on Table 1 7 Time required for battery charges Status Charging time Quick charge power off About 4 hours Trickle charge power on Quick Battery Charge About 5 to 8 hours If one of the following occurs the battery quick charge process stops 1 The battery becomes fully charged 2 The AC adapter or battery is removed The battery AC adapter output voltage is abnormal 4 The charge current is abnormal Trickle Battery Charge When the main battery is fully charged and the AC adapter is attached the power supply microprocessor automatically changes quick charge to trickle charge 610CT 1 8 3 Backup Battery The backup battery maintains data for AutoResume The power source used to back up the AutoResume data is determined according to the following priority AC adapter gt Main battery gt Backup battery The backup battery is charged by the main battery or AC adapter when the system is powered on Table 1 8 shows the charging time and data preservation period of the backup battery Table 1 8 Backup battery charging data preservation time Backup Battery Charging Time Power On 40 H Power Off with AC Adapter 40 H Power Off Without AC Adapter Doesn t c
76. he MEMORY TEST XXXKB message proceed from OKB and 640 Perform the System Board Troubleshooting Procedures in section 2 4 Yes If the Password message displays type the password then press ENTER Is Toshiba MS DOS being loaded Perform the Hard Disk Drive Troubleshooting Procedures in section 2 6 Figure 2 1 Troubleshooting flowchart 1 2 2 3 Perform the Keyboard Troubleshooting Procedures in section 2 7 Do typed characters appear correctly Insert the diagnostics disk into the FDD then run the diagnostic test program Perform the Floppy Disk Drive Troubleshooting Procedures in section 2 5 Is the diagnostics test loaded Yes Perform each test After confirming which diagnostic test has detected an error perform the appropriate procedures as outlined below Is an error detected by any of the diagnostics tests System is normal END Figure 2 1 Troubleshooting flowchart 2 2 If the diagnostics program cannot detect an error the problem may be intermittent The Running Test program should be executed several times to isolate the problem Check the Log Utilities function to confirm which diagnostic test detected an error s then perform the appropriate troubleshooting procedures as follows 1 2 4 If an error is detected on the system test memory test display test ASYNC test pr
77. he 610CT keyboard follow the steps below and refer to figures 4 9 through 4 12 610CT 1 2 Connect the AccuPoint cable to PJ2 and keyboard cable to PJ7 figure 4 12 Replace the keyboard Fit tongues on the back of the keyboard into corresponding holes on the top cover and lay the keyboard in place Secure one M2x4 screw with washer in front of the keyboard figure 4 10 Seat the keyboard cover and press firmly to secure the twelve latches figure 4 9 Replace the optional PCMCIA card optional memory module and battery pack as described in sections 4 4 4 3 and 4 2 4 15 4 6 Hard Disk Drive Removing the Hard Disk Drive To remove the 610CT hard disk drive follow the steps below and refer to figures 4 13 and 4 14 1 Turn off the power to 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card and keyboard as described in sections 4 2 4 3 4 4 and 4 5 3 Remove one M2x4 screw from the HDD 4 Pull up on the plastic tab on the HDD bracket and lift up the HDD and bracket 5 Carefully pull the HDD and bracket to disconnect it from the connector and remove it from the unit Hard disk drive Figure 4 13 Removing the HDD with bracket 46 2 6 7 6 Remove four M3x4 flat head screws securing the bracket to the HDD and remove the bracket M3x4 flat h
78. he system board is damaged Go to Procedure 3 If any other message appears perform Check 3 2 9 Check 3 2 10 The IRT checks the system board When the IRT detects an error the system stops or an error message appears If one of the following error messages 1 through 7 9 through 18 23 or 24 is displayed replace the system board If error message 8 is displayed go to the Keyboard Troubleshooting Procedures in section 2 7 If error message 19 or 20 is displayed go to the HDD Troubleshooting Proce dures in section 2 6 If error message 21 or 22 is displayed go to the FDD Troubleshooting Proce dures in section 2 5 1 Q 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 TIMER 2 OUT ERROR PIT ERROR MEMORY REFRESH ERROR FIRST 64KB MEMORY ERROR RTC ERROR CRTC ERROR VRAM ERROR KBC ERROR SYSTEM MEMORY ERROR SYSTEM MEMORY PARITY ERROR EXTENDED MEMORY ERROR EXTENDED MEMORY PARITY ERROR DMA PAGE REGISTER ERROR DMAC 1 ERROR DMAC 2 ERROR IC 1 ERROR IC 2 ERROR DC ERROR DD 0 ERROR DD 1 ERROR O FDD ERROR DD ERROR TIMER INTERRUPT ERROR ya m d md RTC UPDATE ERROR 610CT Procedure 2 Printer Port LED Check on Boot Mode The printer port LED displays the IRT status and test status by turning lights on an
79. hen the FDD test is started from the Diagnostic Test Menu Refer to step 3 at the beginning of this section to set the start track Sequential Read Write This subtest continuously writes data pattern BSADADh to all the specified tracks selected in step 3 above The data is then read and compared to the original data Random Address Data This subtest writes random data to random addresses on all tracks defined in step 3 above The data is then read and compared to the original data Write Specified Address This subtest writes specified data to a specified track head and address Read Specified Address This subtest reads data from a specified track head and address 3 21 3 9 Printer Test To execute the Printer Test select 6 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen The Printer Test contains three subtests that test the output of the printer connected to the 610CT The following messages will appear after selecting the Printer Test from the DIAGNOSTIC TEST MENU Answer each of the following questions with an appropriate response to execute the test NOTE An IBM compatible printer must be connected to the system to execute this test 1 1 XXXXh channel 2 XXXXh channel 3 XXXXh Select the channel number 1 3 The printer I O port address is specified by the XXXXh number The PORTEGE 610CT supports three printer channels Select the printer cha
80. ide for determining which troubleshooting procedures to execute Before going through the flowchart steps verify the following Ask the user if a password is registered and if it is ask him or her to enter the pass word If the user has forgotten the password connect the printer port wraparound board F31PRT then turn the POWER switch on The computer will override the password function by erasing the current password Verify with the customer that Toshiba MS DOS is installed on the hard disk Non Toshiba operating systems can cause the computer to malfunction Make sure all optional equipment is disconnected from the computer 1 Make sure the floppy disk drive is empty 2 2 610CT 610CT START Connect the AC adapter to the DC IN socket Does the DC IN Icon glow Perform the Power Supply Board Troubleshooting Procedures in section 2 3 No Perform the Power Supply Board Troubleshooting Procedures in section 2 3 Does the Battery LED glow Yes Turn the Power Switch on while holding down the space key Does the DC IN Icon flash Yes Perform the Power Supply Board Troubleshooting Procedures in section 2 3 Perform the System Board Troubleshooting Procedures in section 2 4 Is an error message displayed Is the MEMORY TEST XXXKB message displayed Perform the Display Troubleshooting Procedures in section 2 8 Does t
81. in the unit 2 Seat the cover assembly on the display assembly and secure it with four M2 5x5 screws 3 Replace the microphone display mask top cover HDD keyboard PCMCIA card optional memory module and battery pack as described in sections 4 19 4 15 and 4 7 back through 4 2 610 C T MMM 445 Appendix A Handling the LCD Module Precautions for Handling the LCD Module The computer s LCD module can be easily damaged during assembly or disassembly Therefore please observe the following precautions when handling the LCD module 1 When installing the LCD module in the LCD cover be sure to seat it so that it is properly aligned and maximum visibility of the display is maintained OK 4 2 careful to align the holes at the four corners of the LCD module with the corresponding holes in the LCD cover before securing the module with screws Do not force the module into place because stress can affect its performance Also the panel s polarized surface is easily scarred so be careful when handing it 610CT 3 Ifthe panel s surface gets dirty wipe it with cotton or a soft cloth If it is still dirty try breathing on the surface to create a light condensate and wipe it again If the surface is very dirty we recommend a CRT cleaning agent Apply the agent to a cloth and then wipe the panel s surface Do not apply cleanser
82. ing speed control ISA Bus Controller Gate Array SISCNT3 GA This gate array has the following functions Bus control 32 bit data bus lt gt 16 bit data bus ISA bus interface control ISA bus access control DMAC control DMA address generation I O control Suspend Resume sequence Memory control IAS bus interface control Refresh address generation I O register control Suspend Resume sequence PCMCIA Controller Gate Array This gate array has the following functions PCMCIA memory card control Controller Gate Array IOCNT GA This gate array has the following functions Internal Communication controller Others KBC main CPU communication register file KBC interrupt controller KBC communication controller Contrast adjust speaker volume adjust PWM control Sound board interface BIOS ROM interface SIM control 610CT 610CT Video Controller This video controller controls internal TFT color LCD and external SVGA compatible CRT Keyboard Controller KBC One M38802MA chip is used This KBC includes the keyboard scan controller and keyboard interface controller The KBC controls the internal keyboard external keyboard PS 2 mouse Real Time Clock RTC One T9934 chip is used The T9934 has 128 of bytes memory Fourteen bytes of memory are used for the calendar and clock The remaining 114 bytes are used for the system configuration data 1 3 3 5 External Floppy Disk Driv
83. inter test or real timer test perform the system board troubleshooting proce dures in section 2 4 If an error is detected on the keyboard test perform the keyboard troubleshooting procedures in section 2 7 If an error is detected on the floppy disk test perform the floppy disk drive troubleshooting procedures in section 2 5 If an error is detected on the hard disk test perform the hard disk drive troubleshooting procedures in section 2 6 610CT 2 3 Power Supply Troubleshooting The power supply controls many functions and components in the 610CT To determine if the power supply is functioning properly start with Procedure 1 and continue with the other Procedures as instructed The procedures described in this section are Procedure 1 DC IN Icon Indicator Check Procedure 2 Battery LED Indicator Check Procedure 3 Connection and Replacement Check Procedure 1 DC IN Icon Indicator Check The 610CT AC adapter converts AC power to DC power and contains a charging circuit which charges the batteries The adapter connects to the DC IN socket connector on the back side of the computer When the AC adapter is connected to the computer and the power is turned off the AC adapter charges the batteries The DC IN icon displays whether or not the AC adapter is connected and supplying power When the DC IN icon is green the AC adapter is connected and supplying power to the 610CT If the DC IN icon does not light the AC adapter
84. is field displays the amount of base conventional memory 640 KB and is automatically calculated by the computer c Extended This field displays the amount of extended memory the computer has avail able d Shadow BIOS ROM The TSETUP program displays 192 KB of RAM which is reserved for the Shadow BIOS ROM This field displays the amount of the extended memory used for the shadow BIOS ROM 610 C T 9353 2 Display This group of options helps you configure the computer s display a Display Adapter This field displays the internal controller for the VGA internal display Only VGA compatible is displayed You cannot change it b Display Mode The LCD displays text in 80 characters by 25 lines and graphics in 640 by 480 pixels for either Color or Monochrome mode Use this option to set the computer s display mode to Color or Monochrome Color Selects color mode Default Monochrome Selects monochrome mode Some software is displayed better in monochrome mode c LCD Display Colors This option is used to select the color palette of the internal TFT display when the LCD mode is set to Color 16M colors Displays 256 colors out of 262 144 colors This value cannot be changed d Power On Display This option is used to select the display when booting up Internal External Selects an external CRT if one is connected other wise it selects the internal LCD Simultaneous Selects both the i
85. is not supplying power or the AC adapter is not attached to the 610CT go to Check 1 If the DC IN icon is flashing orange the AC adapter s voltage supply is abnormal or the power supply is not functioning properly go to Check 1 If any of the above indicator conditions are abnormal make sure the DC IN icon s LED indicator lights are not burned out before performing the following checks Check 1 sure the correct AC adapter cable is firmly plugged into the DC IN socket on the back of the computer Check2 Ifthe DC IN icon flashes orange when the AC adapter is connected its voltage output is abnormal Connect a new AC adapter and turn the 610CT on again to verify the indicator condition Check3 battery pack may be malfunctioning Replace the battery pack with a new one and turn the computer on again If the problem still exists perform Check 4 Check 4 Place the 610CT in an environment between 20 C and 70 C until it is at the ambient temperature Repeat the steps which caused the computer to operate abnormally If the same problem still occurs perform Procedure 3 60 25 Procedure 2 Battery LED Indicator Check The Battery LED indicator shows the battery charging status The Battery LED identified by a battery icon on the front of the computer glows amber when the AC adapter is charging the 610CT battery pack If the Battery LED indicator glows green the AC adapter is connected and the battery is
86. isibility Less than full brightness for saving power Automatically turns off power to the system if it is not used for the duration set The duration xx can be set to 3 5 10 15 20 or 30 minutes If the CPU becomes too hot the fan is turned on automatically The CPU processing speed does not change When the CPU temperature falls to a normal range the fan is turned off Fan operation is disabled If the CPU becomes too hot the processing speed is lowered When the CPU temperature falls to a normal range the processing speed is increased 3 63 41 General This section explains how to disassemble the 610CT and replace Field Replaceable Units FRUs It may not be necessary to remove all the FRUs in order to replace one The chart below is a guide to which FRUs need to be removed in order to remove others Always start by removing the battery pack then follow the lines on the chart to determine which FRU you must remove next in order to repair the one you think is causing the 610CT to operate im properly Battery Pack Optional Memory Card Optional PCMCIA Card FL inverter Board Keyboard TFT Color Display Hard Disk Drive FL Unit LED Board Microphone and Speaker Top Cover RTC and Backup Battery Accupoint Control Button Contact Sound Board Power Supply Board System Board DLDIDODODDODOOODL Fan Safety precautions Before you begin disassembly read the following safety precautions and obser
87. ization RTC test RTC 1 READ XXH WRIT XXH CMOS RAM test E in CMOS Bad battery in CMOS Bad check sum in CMOS Bad configuration BARAT in CMOS Bad memory size in CMOS Bad HDD type RA in CMOS Bad time function Check system Then press F1 key PIC initialization Display initialization ERROR ERROR DATA XXXXXXXXH DATA XXXXXXXXH KBC test ERROR System memory test TEM MEMORY ERROR ESS XXXXXXXXH DATA XXXXXXXXH DATA XXXXXXXXH M MEMORY PARITY ERROR ESS XXXX0000H XXXXFFFFH Extended memory test XTENDED MEMORY ERROR ESS XXXXXXXXH DATA XXXXXXXXH E DATA XXXXXXXXH DED MEMORY PARITY ERROR ESS XXXX0000H XXXXFFFFH DMA page register test PAGE REGISTER ERROR DATA XXH E DATA XXH 212 M 610CT Table 2 1 Printer port LED boot mode error status 2 2 Error status Test item DMAC test DMAC 1 E WRITE Message RROR READ DATA XXXXH DA XXXXH DMAC 2 E EAD DATA RITE DAT RROR XXXXH A XXXXH DMAC initialization PIC test Keyboard test KBC initialization Mouse initialization HDD initialization FDD initialization
88. k head XXX X Remove the source disk from the FDD insert a formatted work disk and press any key The track head XXX X message will appear and start copying to the target disk When the amount of data is too large to be copied in one operation the message from step b is displayed again After the floppy disk has been copied the following message will appear Copy complete Another copy 1 Yes 2 No e To copy another disk type 1 and the message from step a will be displayed again Entering 2 returns the test program to the DIAGNOSTIC MENU DUMP program a When dump is selected the following message appears b c d e f DIAGNOSTICS HARD DISK amp FLOPPY DISK DUMP VX XX Drive type select 1 FDD 2 HDD Select a format type number If 2 is selected the display will go to step e Select FDD number 1 A 2 B Select a drive number and the following message will be displayed Format type select 0 2DD 1 2D 2 2HD Select a media type number and the following message will appear Insert source disk into drive A Press any key when ready Insert a source disk and press any key and the following message will appear Max address Track 0079 Head 01 Sector 09 Track number Set the track number you want to dump The system will access the disk and dump a list 3 49 3 23 System Configuration 3 23 1 Function Des
89. ke print All characters print This subtest prints the various print types shown below PRINTER TEST THIS LINE SHOWS NORMAL PRINT THIS LINE SHOWS DOUBLE WIDTH PRINT THIS LINE SHOWS COMPRESSED PRINT THIS LINE SHOWS EMPHASIZED PRINT THIS LINE SHOWS DOUBLE STRIKE PRINT 6 ALL CHARACTERS PRINT 1 5 amp 0123456789 lt gt QGABCDEFGHIJKLMNOPQRSTUVWXYZ N opqrstuvwxyz Ayr abcdefghijklmn Subtest 03 Wraparound NOTE To execute this subtest a printer wraparound connector must be connected to the computer s printer port The printer wraparound con nector 34 741986601 wiring diagram is described in Appendix This subtest checks the output and bidirectional modes of the data control and status lines through the printer wraparound connector 610 323 3 10 Async Test To execute the Async Test select 7 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen The async test contains five subtests that test the 610CT asynchronous communication functions Move the highlight bar to the subtest you want to execute and press Enter Subtests 01 through 04 require the following data format Method Asynchronous Speed 9600BPS Data 8 bits and one parity bit EVEN Data pattern 20h to 7Eh The following message will appea
90. key Using the Toshiba MS DOS system disk install a system program on the hard disk using the SYS command If the following message appears on the display the system program has been transferred to the HDD Restart the 610CT If the error message still appears perform Check 4 System transferred The HDD is connected to the system board This connection can become dam aged or disconnected Disassemble the 610CT as described in chapter 4 Replace ment Procedures If the HDD is not connected to the flexible cable connect it to the flexible cable and return to Procedure 1 If the flexible cable is not connected to the system board connect it to the system board and return to Procedure 1 If the HDD and flexible cable are firmly connected to the system board perform Procedure 3 System Board HDD 610CT Procedure 3 Format Check The 610CT HDD is formatted using the low level format program and the MS DOS FOR MAT program To format the HDD start with Check 1 below and perform the other steps as required Check 1 Check 2 610CT Using the Toshiba MS DOS system disk partition the hard disk using the FDISK command Format the hard disk using FORMAT C S U to transfer the system program to the HDD If the following message appears on the display the HDD is formatted Format complete If any other error message appears on the display refer to the Toshiba MS DOS Manual for more information and perform Check 2 Using the
91. l external cables connected to the computer 2 Remove the battery pack as described in section 4 2 3 Turn the computer upside down 4 Remove two M2 5x4 screws securing the memory module socket cover 5 Slide your fingernail or a thin object under the cover and remove it figure 4 4 M2 5x4 screws Memory module socket cover Figure 4 4 Removing the memory module socket cover 48 Y A O O A 6 Remove two screws securing the module to a brace at the center of the module and set them aside figure 4 5 7 Lift up on the plastic tab to disengage the connectors then grasp the module by the edges and remove it Figure 4 5 Removing the memory module 610 C T __ _ 249 Installing an Optional Memory Module To install an optional memory module in the 610CT follow the steps below and refer to figures 4 4 through 4 6 1 4 10 Position the connector on the bottom of the module over the corresponding connector on the computer align the holes on the side of the module over the screw holes on the brace Place your fingers above the connector and press firmly but gently to assure a solid connection The module should be seated level figure 4 6 Memory module Figure 4 6 Inserting the memory module Secure the module to the brace with two screws figure 4 5 Fold down the plastic tab and lay the cover in place Secure it with two screws figure 4 4
92. ll external cables connected to the computer 2 Remove the battery pack optional memory module PCMCIA card and display mask as described in sections 4 2 4 3 4 4 and 4 15 3 Remove two silver M2x6 screws from the FL inverter board 4 over the board and disconnect the FL inverter cable from and the FL cable from CN2 M2x6 screws FL inverter FL cable FL inverter cable Figure 4 26 Removing the FL inverter board 4 38 _ 610CT Installing the FL Inverter Board To install the 610CT FL inverter board follow the steps below and refer to figure 4 26 1 Connect the FL inverter cable to and the FL cable to CN2 on the FL inverter board 2 Secure two silver M2x6 screws to hold the FL inverter board 3 Replace the display mask PCMCIA card optional memory module and battery pack as described in sections 4 15 4 4 4 3 and 4 2 M 439 4 17 TFT Color Display Module Removing the TFT Color Display Module To remove the 610CT TFT color display module follow the steps below and refer to figure 4 27 CAUTION When you remove the FL unit be careful not to let any dust or other foreign matter contaminate the LCD panel Any contamination can affect the perfor mance of the unit 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer
93. m f below Track verification A check is made of all tracks and if an ECC error ECC correctable data error or record not found error is detected at a track that track is automati cally formatted as a bad track 610CT 2 Good track FORMAT If a good track has been erroneously formatted as a bad track you can use this subtest to reformat the track as a good track To format a track as a good track enter the numbers for the drive interleave cylinder and head as indicated in the screen prompt shown below Drive number select 1 41 2 42 Interleave number 1 1 8 Press Cylinder number dddd Press Head number dd Press Enter to return to the Hard Disk Format menu 3 Bad track FORMAT To format a track as a bad track enter the numbers for the drive interleave cylinder and head as indicated in the screen prompt shown below Drive number select 1 41 2 42 Interleave number 1 1 8 Press Cylinder number dddd Press Head number dd Press Enter to return to the Hard Disk Format menu 4 Bad track CHECK This subtest reads the entire disk and displays a list of bad tracks The test is terminated in case of a bad track check error To initiate the subtest enter the drive number at the prompt shown below Drive number select 1 41 2 2 Bad tracks will be displayed in the format shown below cylinder head 0123 03 Press Enter to return to the Hard Disk Format men
94. mber 01 to 08 4 FDD test subtest number 02 5 HDD test subtest number 01 05 6 Real timer test subtest number 02 7 Printer test subtest number 03 8 Async test subtest number 01 The system automatically detects the number of floppy disk drives connected to the 610CT for the FDD test 3 21 2 Operations CAUTION Do not forget to load a work disk in the FDD If a work disk is not loaded an error will be generated during the FDD testing 610CT 1 Remove the diagnostics disk from the floppy disk drive and insert the work disk Select 6 from the Diagnostic Menu and press Enter the following message will be displayed Printer wrap around test Y N Selecting Y yes executes the printer wraparound test A printer wraparound connector must be connected to the PRT port on the back of the 610CT to prop erly execute this test Select Y or N and press Enter The following message will appear Serial A wrap around test Y N Selecting Y yes executes the ASYNC wraparound test An RS 232 C wrap around connector must be connected to the serial port on the back of the 610CT to properly execute this test 3 45 4 Select Yes or No and press Enter The following message will appear Mount the work disk s on the drive s then press Enter key Warning The contents of the disk s will be destroyed 5 This program is executed continuously To terminate the program press Ctrl Br
95. n chapter 4 Replacement Procedures If the HDD is still not functioning properly perform Check 2 2 Replace the flexible cable with a new one following the instructions in chapter 4 If the HDD still not functioning properly replace the system board 2 22 TOO 000000 eee OL OCT 2 Keyboard Troubleshooting To determine if the 610CT keyboard is functioning properly perform the following proce dures Start with Procedure 1 and continue with the other procedures as instructed Procedure 1 Diagnostic Test Program Execution Check Procedure 2 Connector and Replacement Check Procedure 1 Diagnostic Test Program Execution Check Execute the Keyboard Test in the Diagnostic Program Refer to chapter 3 Tests and Diag nostics for more information on how to perform the test program If an error occurs go to Procedure 2 If an error does not occur the keyboard is functioning properly Procedure 2 Connector and Replacement Check The keyboard is connected to the system board by a 19 pin flat cable The IPS is connected to the power supply board by a 5 pin flat cable These cables may be disconnected or dam aged Disassemble the 610CT as described in chapter 4 Replacement Procedures and perform the following checks Check 1 Make sure the keyboard cable is not damaged and is connected to the system board Keyboard System board If this cable is damaged replace the keyboard with a new one If the cable is disconnected
96. nd seat the battery Tuck the cable back under the clear plastic protector 2 Slide the RTC battery under the brackets on the bottom cover 3 Connect the RTC battery cable to PJ15 on the system board 4 Secure the the RTC battery cable with tape 5 Replace the top cover keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 7 back through 4 2 610 C T Ja 7 7 4 23 4 9 AccuPoint Control Button Contact Removing the AccuPoint Control Button Contact To remove the 610CT AccuPoint control button contact follow the steps below and refer to figure 4 19 1 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card key board top cover RTC and backup batteries as described in sections 4 2 through 4 8 3 Disconnect the cable from PJ3 on the sound board and lift off the AccuPoint control button contact AccuPoint control button contact Figure 4 19 Removing the AccuPoint control button contact 4 24 aan OL OCT Installing the AccuPoint Control Button Contact To install the 610CT AccuPoint control button contact follow the steps below and refer to figure 4 19 1 Lay AccuPoint control button contact in place 2 Connect the cable to PJ3 on the sound board 3 Replace the RTC and backup
97. nit and repeat Procedure 2 If the FDD is still not functioning properly perform Check 2 Check 2 The FDD or its cable may be defective or damaged Replace the FDD and cable with new ones If the FDD is still not functioning properly perform Check 3 Check 3 Replace the system board with a new one following the steps in chapter 4 Re placement Procedures 2 18 610CT 2 6 Disk Drive Troubleshooting To determine if the hard disk drive is functioning properly perform the procedures below starting with Procedure 1 Continue with the other procedures as instructed Procedure 1 Partition Check Procedure 2 Message Check Procedure 3 Format Check Procedure 4 Diagnostic Test Program Execution Check CAUTION The contents of the hard disk will be erased when the HDD troubleshoot ing procedures are executed Transfer the contents of the hard disk to a floppy disk s using the Toshiba MS DOS BACKUP command Refer to the Toshiba MS DOS Manual for more information about how to perform the BACKUP command Procedure 1 Partition Check Insert the Toshiba MS DOS system disk and turn the computer on then perform the follow ing checks Check 1 C and press Enter If you cannot change to drive C go to Check 2 If you can change to drive C go to Procedure 2 Check 2 Type FDISK and press Enter Choose Display Partition Information from the FDISK menu If drive C is listed go to Check 3
98. nnel number and press Enter to execute the selected subtest Subtest 01 3 22 Ripple Pattern This subtest prints characters for codes 20h through 7Eh line by line while shifting one character to the left at the beginning of each new line 1785 5 0123456789 lt gt ABCDEFGHI JKLMNOPORSTUVWXYZ _ abcdefghijk1lm 1 8 5 amp 0123456789 lt gt ABCDEFGHI JKLMNOPORSTUVWXYZ abcdefghijklmn 6 0123456789 lt gt ABCDEFGHI JKLMNOPORSTUVWXYZ abcde ghi jklmno 5 5 0123456789 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ 1 _ abcdefghijk1lmnop 5 5 0123456789 GABCDEFGHIJKLMNOPQRSTUVWXYZ _ abcdefghijklmnopq amp 0123456789 lt gt ABCDEFGHIJKLMNOPOQRSTUVWXYZ NV abcdefghijklmnopqr amp 0123456789 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcdefghijk1lmnopqrs 0123456789 lt gt ABCDEFGHI JKLMNOPORSTUVWXYZ abcde ghi jklmnopqrst 0123456789 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcdefghijklmnopqrstu 0123456789 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcdefghijklmnopqrstuv 0123456789 lt gt ABCDEFGHIJKLMNOPORSTUVWXYZ _ abcdefghijklmnopqrstuvw 610CT Subtest 02 Function This subtest is for IBM compatible printers and tests the following functions Normal print Double width print Compressed print Emphasized print Double stri
99. nt and address offset in conventional memory program end to 640 KB then reads the new data and compares the result with the original data Refresh This subtest writes a 256 byte unit of constant data to conventional memory 0 to 640 KB then reads the new data and compares the result with the original data The constant data is AAAAh and 5555h NOTE There is a short delay between write and read operations de pending on the size of the data Protected mode This subtest writes constant data and address data to extended memory maxi mum address 100000h then reads new data and compares the result with the original data The constant data is FFh AAh 55h and OOh 3 9 Subtest 05 Subtest 06 3 10 Memory module NOTE To execute this subtest an optional memory card must be in stalled in the computer This subtest functions the same as subtest 04 except it is used for testing an optional memory card Memory module capacity is 8 MB 16 MB 24 MB and 32 MB After selecting subtest 05 the following message will appear Extended memory size 1 8 MB 2 16 MB 3 24 MB 4 32 MB Select the number that corresponds to the memory card installed in the 610CT Cache memory To test the cache memory a pass through write read comparison of 5A data is run repeatedly to test area 70007 Program size to 7000 7FFF 32 KB to check the hit miss ratio on off status One tes
100. nternal LCD and the external CRT for simultaneous display NOTE When starting the computer in Resume mode the last configuration is remembered If data does not appear on the display you are using after starting in Resume mode press 5 Pressing Fn F5 changes the display setting as follows internal LCD simultaneous external CRT 3 54 610CT e Text Stretch Mode Text stretch mode enables a larger display area of 680x480 pixels in text mode Disabling this function reduces the resolution to the standard 640x400 pixels Enabled Enables the text stretch mode feature Default Disabled Disables the text mode stretch feature 3 Hard Disk This item lets you select the hard disk IDE mode Enhanced IDE Default Normal Standard IDE To see the capacity of the hard disk use the CHKDSK command See your DOS documentation for details on using CHKDSK 4 I O ports This option controls settings for serial and parallel ports and the sound system a Serial Port This option allows you to set the COM level COM1 or 2 for the serial port and PCMCIA slot The serial port interrupt request level IRQ and I O port base address for each COM level is shown below COM level Interrupt level address 1 3F8h Serial port default COM2 2F8h COM3 3F8h Serial port default COM4 2F8h Not used Disables port NOTE Do not assign the same interrupt request level and I O address to the s
101. o not disassemble the 610CT unless it is operating abnormally 2 Use only the correct and approved tools 3 Make sure the working environment is free from the following elements whether you are using or storing the 610CT Q Dust and contaminates Static electricity Extreme heat cold and humidity 4 Make sure the FRU you are replacing is causing the abnormal operation by per forming the necessary diagnostics tests described in this manual 5 Do not perform any operations that are not necessary and use only the described procedures for disassembling and installing FRUs in the 610CT 6 After removing parts from the computer place them in a safe place away from the computer so they will not be damaged and will not interfere with your work 7 You will remove and replace many screws when you disassemble the 610CT When you remove screws make sure they are placed in a safe place and identified with the correct parts 8 After you have replaced an FRU make sure the 610CT is functioning properly by performing the appropriate test on the FRU you have fixed or replaced Disassembly Procedures The 610CT has two basic types of cable connectors L Pressure Plate Connectors Normal Pin Connectors To disconnect a Pressure Plate connector lift up the tabs on either side of the connector s plastic pressure plate and slide the cable out of the connector To connect the cable to a Pressure Plate connector make sure the press
102. onnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card key board HDD top cover RTC and backup batteries AccuPoint control button contact sound board power supply board and system board as described in sections 4 2 through 4 12 3 Disconnect the fan cable from PJ16 4 Remove two M3x3 screws securing the fan to the system board and remove the fan M3x3 screws Figure 4 23 Removing the fan 4 32 MM M M 610CT Installing the Fan To install the 610CT fan follow the steps below and refer to figure 4 23 1 Secure the fan to the system board with two M3x3 screws 2 Connect the fan cable to PJ16 3 Replace the system board power supply board AccuPoint control button contact RTC and backup batteries top cover HDD keyboard optional PCMCIA card optional memory card and battery pack as described in sections 4 12 back through 4 2 610 C T sd 4 14 LED Board and Speaker Removing the LED Board and Speaker To remove the 610CT LED board and speaker follow the steps below and refer to figure 4 24 Turn off the power to the 610CT Disconnect the AC adapter power cord and all external cables connected to the computer 2 Remove the battery pack optional memory card optional PCMCIA card key board HDD and top cover as described in sections 4 2 through 4 7
103. p edges and corners so be careful not to injure yourself CAUTION 1 When you change a component be sure the replacement component meets the required specifications To avoid any risk of damage to the computer never use foreign parts 2 To avoid any risk of short circuit fire or other internal damage never allow any metal objects such as screws or paper clips to fall into the unit Be sure to replace screws with the same size as those removed Screw sizes are listed in the corresponding figures Make sure all screws are securely fastened Loose screws can cause short circuits resulting in heat smoke or fire 3 To reduce the risk of accidental electric shock before lifting out an FRU or other component make sure all cables to the component have been disconnected 4 Be sure to use the correct AC adapter Use of the wrong adapter could cause reverse polarity resulting in smoke fire or other equipment damage 5 To avoid the risk of accidental electric shock make sure that all replacement components meet the specifications for the computer and that all cables and connectors are securely fastened 4 2 610CT Before You Begin Look over the procedures in this section before you begin disassembling the 610CT Famil iarize yourself with the disassembly and reassembly steps Begin each procedure by removing the AC adapter and the battery pack as instructed in section 4 2 The Battery Pack 1 D
104. p mode c Display Auto Off Use this option to disable or set the duration of the display automatic power off function This function causes the computer to turn the LCD panel s illumination off if you make no entry for the set period of time Disabled Disables display automatic power off xx Min Automatically turns off power to the LCD panel s illumination if the panel is not used for the duration set The duration xx can be set to 1 3 5 10 15 20 or 30 minutes d HDD Auto Off Use this option to disable or set the duration of the HDD automatic power off function Disabled Disables HDD automatic power off xx Min Automatically turns off power to the hard disk drive if it is not used for the duration set The duration xx can be set to 1 3 5 10 15 20 or 30 minutes e System Auto Off Use this option to enable or disable the system automatic off function in Resume mode when you are working in DOS In Boot mode it is disabled and not displayed Disabled Disables system automatic power off xx Min Automatically turns off power to the system if it is not used for the duration set The duration xx can be set to 10 20 30 40 50 or 60 minutes 3 62 M 610CT 610CT f LCD Brightness Use this option to set the level of LCD brightness Bright Semi bright xx Min g Cooling method Performance Quiet Full brightness for maximum v
105. r at the bottom of the screen when subtests 01 03 04 and 05 are selected 1 1 XXXXh Channel 2 XXXXh Channel 3 XXXXh Select the Channel number 1 3 The serial I O port address is specified by the XXXXh number Select the serial port channel number and press Enter to start the subtest Subtest 01 Wraparound board NOTE To execute this subtest an RS 232 C wraparound connector 34M741621G01 must be connected to the RS 232 C port The RS 232 C wraparound connector wiring diagram is described in Appendix G This subtest checks the data send receive function through the wraparound connector Subtest 02 Board 1 lt gt board 2 NOTE To execute this subtest an RS 232 C cable 9 pin to 9 pin must be connected to boards 1 and 2 The RS 232 C direct cable wiring dia gram is described in Appendix G This subtest checks the data send receive function through the RS 232 C direct cable 3 24 610CT Subtest 03 Point to point Send NOTE To execute this subtest two machines must be connected with an RS 232 C direct cable One machine should be set as send subtest 03 and the other set as receive subtest 04 The wiring diagram for the RS 232 C direct cable is described in Appendix F This subtest sends 20h through 7Eh data to the receive side then receives the sent data and compares it to the original data Subtest 04 Point to point Receive This subte
106. racter Display mode 6 E This subtest displays even dots odd dots and all dots in the 640x200 dot graphics mode 6 and E as shown below To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break Subtest 07 640x350 480 Character Display mode 10 12 This subtest displays even dots odd dots and all dots in the 640x350 and 640x480 dot graphics mode 10 12 as shown below Pressing Enter changes the size of the displayed image To exit this subtest and return to the DISPLAY TEST menu press Ctrl Break 610 C T 317 Subtest 08 Display Page This subtest confirms that the pages can be changed in order from page 0 through page 7 in 40 25 character mode DISPLAY PAGE 0 0000000000000000000000000000000000000000 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 00000000000000000000000000000000000000 Pressing Ctrl Break exits this subtest after completion of the test and returns to the DISPLAY TEST menu Subtest 09 H Pattern Display Border Color This subtest displays 2000 H characters on the entire screen as shown below HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH
107. re 3 Check 1 If one of the following error messages is displayed on the screen press the F1 key as the message instructs These errors occur when data is lost or when the system configuration preserved in the RTC memory CMOS type memory is not the same as the actual configuration If you press the F1 key as the message instructs the system configuration in the RTC memory configuration is set to the default setting If error message b appears often when the power is turned on replace the RTC battery If any other error message is displayed perform Check 2 a C C a 2 8 y Error CMOS Bad HDD type k system Then press F1 key Error in CMOS Bad battery system Then press F1 key Error in CMOS Bad check sum system Then press F1 key Error in CMOS Bad memory size system Then press F1 key Error in CMOS Bad time function k system Then press F1 key 610CT Check 2 610CT If the following error message is displayed on the screen press any key as the message instructs RNI NG R ESUME FAILURI Lr ESS ANY EY TO CONTIN A This error message appears when data stored in RAM under the resume function is lost because the battery has become discharged or t
108. ress data Cross talk amp peak shift Write read compare CE Write specified address Read specified address ECC circuit Sequential write W R C specified address REAL TIMER Real time Backup memory Real time carry NDP NDP test EXPANSION PCMCIA wrap around SOUND CODEC REC PLAY FM synthesizer SINE wave playback 610CT 3 4 System Test To execute the System Test select 1 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen Move the highlight bar to the subtest you want to execute and press Enter Subtest 01 ROM checksum The ROM checksum tests the system board from address F0000h to FFFFFh 64KB Subtest 02 H W status This test reads and displays the hardware status as shown below CPU clock Notch signal 90MHz 45MHz 2HD 2DD Table 3 2 describes the hardware bit status for each bit tested Pressing Enter returns you to the Subtest Menu Table 3 2 Hardware Status CPU clock speed 90 MHz 45 MHz Media type 2HD 2DD Subtest 03 Version check This subtest checks the version of the following four items BIOS ROM BOOT ROM version PS microprocessor version This subtest compares these four items to the reference data stored in the test program When the read information is lower than the reference data the speaker beeps and the test program displays the following screen image To exit this screen press the S k
109. rl Left Shift Right Shift PRESS Enter KEY PS 2 mouse connect check NOTE To execute the PS 2 mouse connect check a PS 2 mouse must be connected to the optional port replicator This subtest checks whether a PS 2 mouse is connected If this test does not detect an error it returns to the subtest menu If this test detects an error the following message appears KBD MOUSE INTERFACE ERROR HALT OPERATION 1 Test end 2 Continue 3 Retry 610CT Subtest 04 610C T Ponting Stick Check NOTE To execute the pointing stick check mouse driver software must be installed This subtest checks the function of the pointing stick as shown below a IPS stick pressure sensing direction and parameter b IPS switch function check This test reports the pointing stick response from the IPS and IPS switch by displaying the location parameters When the stick is pressed towards the upper left the POINTING display changes to an arrow as shown below If an IPS switch is pressed the BUTTON display alternates black and white and appears on the right side of the display If two IPS switches are pressed or if this test does not detect an error it returns to the subtest menu TPS TEST PROGRAM V1 00 lt POINTING gt lt PARAMETER gt STATUS 0008h 0000h EB Y RATE 0000h EBEN lt BUTTON gt
110. s found track 0 during a recalibrate command 1 The hard disk could not find track 0 during a recalibrate command 610CT Not used 3 37 3 18 Hard Disk Format This command executes hard disk formatting There are two types of hard disk formatting Low level physical formatting 1 MS DOS logical formatting This hard disk format function performs a low level format of the hard disk and executes the following three hard disk formats and one check 1 All track FORMAT 2 Good track FORMAT 3 Bad track FORMAT 4 track CHECK CAUTION The contents of the hard disk will be erased when this program is executed Before executing the function transfer the contents of the hard disk onto a floppy disk s This can be done with the Toshiba MS DOS BACKUP command See the Toshiba MS DOS manual for details 3 18 1 Function Description 1 All track FORMAT This option performs a low level format of all the tracks on the hard disk as shown in Table 3 6 below NOTE Before executing the all track format option check for bad tracks using the Bad Track CHECK option or display a list of bad tracks on the HDD Table 3 6 Hard disk formatting sequence IBM DBOA 2720 Cylinders Heads Sectors Sector length bps 338 IOT 3 18 2 Good track FORMAT This option formats a specified cylinder and track as a good track If a good track is
111. s the volume level of the alarm Setting this option to off disables the computer s sound function for alarms This option can also be set by hotkeys Off Disables alarm Low Sets the alarm volume to low Medium Sets the alarm volume to medium High Sets the alarm volume to high Default When Alarm Volume is selected the subwindow below is displayed to let you enable or disable certain functions ALARM VOLUME OPTIONS Enable Enab LOW BATTERY Alarm Panel Close Alarm Enabled Enables the feature Default Disabled Disables the feature System Beep Use this feature to enable or disable the system beep Enabled Enables the feature Default Disabled Disables the feature Panel Power On Off This option allows you to automatically turn your computer on or off by opening or closing the display panel If this feature is enabled when the computer is in Resume mode the system is automatically powered off when the display panel is closed and powered on when the panel is opened This option does not appear when the computer is in boot mode Enabled Enables the feature Disabled Disables the feature Default NOTE Do not remove the AC adapter and battery pack at the same time when you use this feature If you do so data saved by AutoResume will be lost You must also reset this option 3 59 3 60 g Alarm Power On This option lets you set the time
112. se the main memory is accessed only when necessary to update the cache contents with changes in the main memory Write through policy accesses main memory every time data is handled by the processor Battery Save Mode This option is used to select Full Power or Low Power or User Setting of the BATTERY SAVE OPTION Full Power following shows full power setting COM PCMCIA PRT Processing Speed High CPU Sleep Mode Disabled Display Auto Off 30 Min HDD Auto Off Disabled System Auto Off Disabled LCD Brightness Bright Cooling method Performance Low Power following shows low power setting COM PCMCIA PRT Processing Speed High CPU Sleep Mode Enabled Display Auto Off 03 Min HDD Auto Off 03 Min System Auto Off 30 Min LCD Brightness Semi bright Cooling method Quiet NOTE In boot mode the System Auto Off message does not appear User Setting option allows you to set the battery save param eters on the sub window BATTERY SAVE OP TIONS When you select this option the automatic setting feature Full Power or Low Power is disabled and the user preferred parameters become effective The default setting in the sub windows depends on the Battery Save Mode Low Power Long Life or Full Power Normal Life For LCD Brightness for details see Battery Save Options below 610CT 610CT d e f Alarm Volume This option disables or set
113. sk a HDD Mode I O Ports a Serial Port b Parallel Port c Sound System Password Others a Power up Mode b CPU Cache c Battery Save Mode d Alarm Volume e System Beep f Panel Power On Off g Alarm Power On h Keyboard i Pointing Devices 0 Boot Priority 3 51 3 24 2 Accessing the SETUP Program Selecting 0 from the DIAGNOSTICS MENU and pressing Enter displays the following SYSTEM SETUP BIOS version x xx MEMORY COM PCMCIA PRT Total 8192 KB Serial Port COMI IRQ4 3F8H Base 640 KB Parallel Port LPT 378H Extended 7360 KB Sound System Address IRQ DMA Shadow BIOS ROM 192 KB r POWER ON PASSWORD DISPLAY Not Registered Display Adapter VGA compatible LCD Display Mode Color OTHERS Power up Mode Boot Display Colors 16M Colors CPU Cache Enabled Power On Display Internal External Battery Save Mode Full Power Text Mode Stretch Enabled Alarm Volume High System Beep Enabled r HARD DISK Panel Power On Off Disabled HDD Mode Enhanced IDE Normal Alarm Power On Disabled Keyboard Layout Fn Pointing Devices Auto selected Boot Priority FDD HDD Select items Space BkSp Change values Esc Exit without saving Home Set default values End Save changes and Exit Moving Within the SETUP Menu and Changing Values 1 Press lt and gt to move between the two columns Press T
114. specified data to a specified cylinder and head on the HDD Read specified address This subtest reads data which has been written to a specified cylinder and head on the HDD ECC circuit This subtest checks the Error Check and Correction ECC circuit functions of the specified cylinder and head on the HDD Sequential write This subtest writes specified 2 byte data to all of the cylinders on the HDD W R C specified address This subtest writes data to a specified cylinder and head on the HDD then reads the data and compares it to the original data 610CT 3 12 Real Timer Test To execute the Real Timer Test select 9 from the DIAGNOSTIC TEST MENU press Enter and follow the directions on the screen The real timer test contains three subtests that test the 610CT real timer functions Move the highlight bar to the subtest you want to execute and press Enter Subtest 01 Real Time A new date and time can be input during this subtest To execute the real time subtest follow these steps 1 Select subtest 01 and the following message will appear date XX XX XXXX time XX XX XX Current Current Enter new date PRESS ENTER KEY TO EXIT TEST 2 If the current date is not correct input the correct date at the Enter new date prompt and press Enter The following prompt will appear Enter new time 3 Ifthe current time is not correct input the correct time in 24 hour
115. st is used with subtest 03 described above This subtest receives the data from the send side then sends the received data Subtest 05 Interrupt Test This subtest checks the Interrupt Request Level of IRQ 4 3 and 5 from the send side 610 77 925 3 11 Hard Disk Test To execute the Hard Disk Test select 8 from the DIAGNOSTIC TEST MENU Press Enter and follow the directions displayed on the screen The hard disk test contains 10 subtests that test the 610CT hard disk drive functions The following messages will appear after selecting the hard disk test from the DIAGNOSTIC TEST MENU Answer each of the following questions with an appropriate response to execute the test CAUTION The contents of the hard disk will be erased when subtest 02 03 04 05 06 08 09 or 10 is executed Before running the test transfer the contents of the hard disk to a floppy disk s This can be done with the Toshiba MS DOS BACKUP command After the hard disk test is completed execute the Toshiba MS DOS FDISK command which will set the partition Next execute the Toshiba MS DOS FORMAT command Refer to the Toshiba MS DOS manual for details 3 26 When you select the hard disk test from the DIAGNOSTIC TEST MENU the following message will appear Test drive number select 1 HDD 1 2 HDD 2 0 HDD1 amp 2 Select the hard disk drive number
116. stic program Refer to Chapter 3 Tests and Diagnostics for more information about the diagnostics test procedures Floppy disk drive test error codes and their status names are described in table 2 3 Make sure the floppy disk in the FDD is formatted correctly and that the write protect tab is dis abled If any other errors occur while executing the FDD diagnostics test go to Check 1 Table 2 3 Floppy disk drive error code and status Bad command Address mark not found Write protected Record not found Media removed on dual attach card DMA overrun error DMA boundary error CRC error FDC error Seek error FDD not drive Time out error Not ready Write buffer error Data compare error Check 1 If the following message is displayed disable the write protect tab on the floppy disk If any other message appears perform Check 2 Write protected Check 2 Make sure the floppy disk is formatted correctly If it is go to Procedure 3 60 847 Procedure 3 Connector Check and Replacement Check The 3 5 inch Floppy Disk Drive is connected to the system board by the FDD cable This cable may be damaged or disconnected from the system board Perform the following checks Check 1 sure the FDD cable is firmly connected to the system board 3 5 inch external FDD System Board If this cable is disconnected connect it to the system u
117. t takes 3 seconds Number of miss hit lt Number of hit OK Number of miss hit gt Number of hit Fail 610CT 3 6 Keyboard Test To execute the Keyboard Test select 3 from the DIAGNOSTIC TEST MENU press Enter and follow the directions displayed on the screen The Keyboard test contains four subtests that test the 610CT keyboard actions Move the highlight bar to the subtest you want to execute and press Enter Subtest 01 Pressed key display 82 84 NOTE The Numeric and the Arrow modes must be off to execute this subtest When you execute this subtest the keyboard layout is drawn on the display as shown below When any key is pressed the corresponding key on the screen changes to an character Holding a key down enables the auto repeat function which causes the key s display character to blink Press Key Display 11 If test Press Del Enter Key 610CT 311 Subtest 02 Subtest 03 3 12 Pressed key code display When a key is pressed the scan code character code and keytop name are displayed on the screen in the format shown below The Ins Caps Lock Num Lock Scroll Lock Alt Ctrl Left Shift and Right Shift keys are displayed in reverse screen mode when pressed The scan codes character codes and keytop names are shown in Appendix D KEYBOARD TEST IN PROGRESS 302000 Scan code Character code Keytop Ins Lock Caps Lock Num Lock Scroll Lock Alt Ct
118. tch with a new one and test the display again If the problem still exists perform Check 5 Replace the display cable with a new one and test the display again If the problem still exists perform Check 6 The system board may be damaged Replace the system board with a new one 2 27 3 1 The Diagnostic Test This chapter explains how to use the 610CT Diagnostic Test Program TEST610 to test the functions of the hardware modules The Diagnostics Test Program is stored on the Diagnos tic Disk The Diagnostics Test Program consists of 20 programs that are grouped into the Service Program Module DIAGNOSTICS MENU and the Test Program Module DIAG NOSTIC TEST MENU The DIAGNOSTICS MENU consists of the following eight functions DIAGNOSTIC TEST HARD DISK FORMAT HEAD CLEANING LOG UTILITIES RUNNING TEST FDD UTILITIES SYSTEM CONFIGURATION SETUP DODOCCCOCOCLU The DIAGNOSTIC TEST MENU contains the following 12 functional tests These are all located within the DIAGNOSTIC TEST function of the DIAGNOSTICS MENU SYSTEM TEST MEMORY TEST KEYBOARD TEST DISPLAY TEST FLOPPY DISK TEST PRINTER TEST ASYNC TEST HARD DISK TEST REAL TIMER TEST NDP TEST EXPANSION TEST SOUND TEST 00606006099 You will need the following equipment to perform some of the 610CT Diagnostic Test Pro The 610CT Diagnostics Disk all tests A formatted working disk for the floppy disk drive test all tests 3 5 inch 2HD 2DD
119. tem Board Back View eta A RAD BN Cree QE 7 D RO 44 at Hn ws gE 8 1 MEE iia IM bebe t4 t 7 ep gt gt n 5 Figure 2 Board layout back 2 0 610CT Table B 1 System board ICs and connectors front gt SCPCNT GA UJ KBC Controller GA PRT Connector m FDD Connector JH lt gt r HDD Connector Q ASYNC I F Connector alallala hantla I P REP Connector 1 Keyboard Connector LED Connector PCMCIA Slot Connector Internal LCD Connector Power Supply Board Joint Connector RTC Battery Connector OL FAN Connector Panel Sensor Connector 9 Speaker Connector 2 Sound Connector 9 U vi Sub battery Connector Table B 2 System board ICs and connectors back Number IC1 CPU IC7 SISCNT GA IC8 to IC11 System Memory 12 SYSTEM Clock SI IC15 BIOS ROM IC24 Video RAM 25 PCMCIA 26 27 Video IC31 RGB IC34 RTC PJ1 SIMM Connector B 3 Appendix C Pin Assignments C 1 610CT PJ1 SIMM Connector 140 pin Table C 1 SIMM conne
120. the system board through a 25 pin flat cable The pointer control stick located in the center of the keyboard provides convenient control of the cursor without requiring desk space for a mouse The keyboard is shown in figure 1 6 See Appendix E for optional keyboard configurations Figure 1 6 Keyboard 1 10 1 6 TFT Color LCD The TFT Color Liquid Crystal Display LCD contains an LCD module a Fluorescent Lamp FL and an FL inverter board 1 6 1 LCD Module The 610CT TFT color LCD supports 640x480 pixels with an internal display controller and 256K colors for graphics and characters This controller includes the functions of Video Graphics Array VGA and Super VGA SVGA for external display The LCD receives 9 bit data signals data enable signals and has a shift clock for data trans mission All signals are CMOS level compatible The TFT LCD is shown in figure 1 7 Figure 1 7 TFT color LCD The specifications for the LCD are listed in table 1 3 Table 1 3 TFT color LCD specifications Item Specifications Number of dots dots 640 x 480 Dot pitch mm 0 3x 0 3 Display area mm 192 x 144 Contrast 100 FL current mA 4 0 FL frequency KHz 100 max 1 11 1 6 2 Fluorescent Lamp FL Inverter Board The FL inverter board supplies high frequency current to light the LCD s Fluorescent Lamp The specifications for the FL inverter are described in table 1 4 Table 1 4 F
121. to be tested and press Enter The following message will appear HDC F W error retry 1 yes 2 no This message is used to select the retry operation when the hard disk controller detects an error Select 1 or 2 and press Enter The following message will appear Data compare error dump 1 no 2 yes This message is used to select the error dump operation when a data compare error is detected Select 1 or 2 and press Enter The following message will appear Detail status display 1 no 2 yes This message is used to select whether or not the HDD status is displayed on the screen The HDD status is described in section 3 15 Select 1 or 2 and press Enter 610CT Subtest 01 Subtest 02 Subtest 03 610CT The Hard Disk Test message will appear after you respond to the Detail Status prompt Select the number of the subtest you want to execute and press Enter The following message will appear during each subtest HARD DISK TEST XXXXXXX UB TEST XX ASS COUNT XXXXX ERROR COUNT XXXXX RI D TE DATA XX READ DATA XX DDRESS XXXXXX STATUS The first three digits of the ADDRESS indicate which cylinder is being tested the fourth digit indicates the head and the last two digits indicate the sector The first digit of the STATUS number indicates the drive being tested and the last two digits indicate the error status code as explained in table 3 3 in
122. to each connector AC Adapter Power Supply Board System Board If any of these boards is disconnected connect it and repeat Procedure 1 If the system is still not functioning properly perform Check 2 Check2 The power supply board may be defective or damaged Replace the power supply board with a new one following the steps in chapter 4 Replacement Procedures If the system is still not functioning properly perform Check 3 3 Replace the system board with a new one and restart the system If the problem still exists other FRUs may be damaged 610 C T 9 O 27 2 4 System Board Troubleshooting This section describes how to determine if the system board is defective or not functioning properly Start with Procedure 1 and continue with the other procedures as instructed The procedures described in this section are Procedure 1 Procedure 2 Procedure 3 Procedure 4 Procedure 5 Message Check Printer Port LED Check on Boot Mode Printer Port LED Check on Resume Mode Diagnostic Test Program Execution Check Replacement Check Procedure 1 Message Check When the power is turned on the system performs the Initial Reliability Test IRT installed in the BIOS ROM The IRT tests each IC on the system board and initializes it If an error message is shown on the display perform Check 1 If there is no error message go to Procedure 2 If Toshiba MS DOS is properly loaded go to Procedu
123. u 610 CT S34 3 19 Head Cleaning 3 19 1 Function Description This function cleans the heads in the FDD by executing a series of head load seek and read operations A cleaning kit is necessary to perform this program 3 19 2 1 3 42 Operations Selecting test 4 from the DIAGNOSTIC MENU and pressing Enter displays the following messages DIAGNOSTICS FLOPPY DISK HEAD CLEANING VX XX Mount cleaning disk s on drive s Press any key when ready Remove the Diagnostics Disk from the FDD then insert the cleaning disk and press Enter When the cleaning start message appears the FDD head cleaning has begun The display automatically returns to the DIAGNOSTIC MENU when the program is completed 610CT 3 20 Log Utilities 3 20 1 Function Description This function logs error information generated while a test is in progress and stores the results in RAM This function can store data on a floppy disk or output the data to a printer If the power switch is turned off the error information will be lost The error information is dis played in the following order 1 Error count CNT 2 Test name TS NAME 3 Subtest number TS NAME 4 Pass count PASS 5 Error status STS 6 FDD HDD or memory address ADDR 7 data WD 8 Read data RD 9 HDC status HSTS 10 Error status name ERROR STATUS
124. ure plate is fully lifted and slide the cable into the connector Secure the cable in place by pushing the sides of the pressure plate down so the plate is flush with the sides of the connector Gently pull on the cable to make sure the cable is secure If you pull out the connector connect it again making sure the connector s pressure plate is fully lifted when you insert the cable Standard pin connectors are used with all other cables These connectors can be connected and disconnected by simply pulling them apart or pushing them together 610 C T M JJJJJ M M 43 Assembly Procedures After you have disassembled the 610CT and fixed or repaired the problem that was causing the 610CT to operate abnormally you will need to reassemble the 610CT While assembling the 610CT remember the following general points Take your time making sure you follow the instructions closely Most problems arise when you hurry to assemble the 610CT Make sure all cables and connectors are securely fastened Before securing the FRU or other parts make sure that no cables will be pinched by screws or the FRU Check that all latches are closed securely in place Make sure all the correct screws are used to secure all FRUs Using the wrong screw can damage the screw and may prevent proper seating of an FRU After installing an FRU in the 610CT confirm that the FRU and the 610CT are functioning
125. ve them care fully as you work DANGER 1 Always use the lithium ion battery pack or the back up battery autho rized by Toshiba to be compatible with the unit Since other battery packs have different specifications they may be incompatible with the unit and may burst or explode Heating or disassembling the battery pack could cause leakage of alkaline solution Throwing the battery pack into a fire could cause the battery pack to explode 2 The power supply FL inverter and other components carry high voltages If you turn on the power of a partially disassembled computer to check its operation be very careful not to touch connectors or compo nents This will reduce the risk of accidental electrical shock Also do not disassemble individual components during first level maintenance 610 C T 9 M Observe the following Cautions and Warnings when you change an FRU or other component WARNING 1 Turn off the power and disconnect the AC power cord or AC adapter from the power source exposure to electric shock hazards may occur 2 Batteries in the computer retain electrical charge so there is danger of electrical shock even when the computer is disconnected from an AC power source To reduce the risk of accidental electric shock remove any metal jewelry or accessories such as necklaces bracelets or rings Never work with wet or damp hands 3 The 610CT contains many shar

Toshiba Portege 610CT - Maintenance Manual

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