Page 1 Eight (8) KB of cache memory is stored in the i486DX2. Optionally, a turbo cache module (128 KB) made by Integrated Device Technology (IDT) can be installed in the T6600C. When it is installed, the i486DX2 cache memory is duplicated.
Page 2 Power supply The power supply is a universal, auto-sensing power supply which enables worldwide usage of the T6600C as long as a compatible AC plug is available. Expansion slots The two Industry Standard Architecture (ISA) bus slots allow for an IBM-compatible full-size card and half-size cards.
Page 3 The computer has the following standard 3.5-mm diameter miniature stereo jacks for an audio system: • Headphone (with speaker shut-off switch) • Line out • Line in • Microphone Special ports The T6600C has a Feature connector and Z-connector for use with expansion cards. T6600C, T6600C/CD, T6600C/CDV...
Page 4 The T6600C Personal Computer is shown in Figure 1-1, and its system configuration is illustrated in Figure 1-2. Figure 1-1 T6600C Personal Computer Figure 1-2 T6600C System Unit Configuration T6600C, T6600C/CD, T6600C/CDV...
Page 5: System Unit Block Diagram
System Unit Block Diagram Figure 1-3 shows a block diagram of the T6600C system unit. Figure 1-3 T6600C System Board Block Diagram T6600C, T6600C/CD, T6600C/CDV...
Page 6 • One Programmable Interval Timer (PIT): ....82C54 equivalent • One Floppy Disk Controller (FDC): ......TC8565 equivalent • One Serial Input/Output Controller (SIO): ....TC8570 equivalent (The T6600C does not use SIO inside the T9901.) • One Variable Frequency Oscillator (VFO):....TC8568 equivalent • One I/O Controller •...
Page 7 This gate array has the following functions: • CPU Control • Turbo Cache Control • Memory Control - DRAM Control - Compatible Bus Interface Control • Bus Controller - Compatible Bus Interface Control - Compatible Access Control - DMAC Control - I/O Control T6600C, T6600C/CD, T6600C/CDV...
Page 8 - Refresh Address Generation • I/O Register - Compatible I/O Port - Saving the data of the Register (in resume) Control - Toshiba Special Register • Processing Speed Control • Data Bus Change Controller • Data Latch PCMCIA Controller Gate Array This gate array has the following functions: •...
Page 9 The T6600C 3.5-inch 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 T6600C FDD is shown in Figure 1-4, and its specifications are described in Table 1-1. Figure 1-4 3.5-inch FDD Table 1-1 3.5-inch FDD Specifications...
Page 10: Inch Hard Disk Drive
The Hard Disk Drive (HDD) is a random access, non-volatile storage device. It has a non- removable 3.5-inch magnetic disk and mini-Winchester type magnetic heads. The T6600C supports a 510 MB HDD. The disk drive is shown in Figure 1-5, and its specifi- cations are described in Table 1-2.
Page 11 Keyboard The 101-key (USA) or 102-key (European) keyboard is mounted on the T6600C’s system unit, and is connected to the keyboard controller on the system board through a 19-pin flat cable. The keyboard is shown in Figure 1-6. See Appendix F for optional keyboard configurations.
Page 12 Display The T6600C display is a TFT Color Liquid Crystal Display (LCD) which contains an LCD module, a Fluorescent Lamp (FL), and an FL inverter board. 1.6.1 TFT Color LCD Module The T6600C TFT color LCD is backlit and supports 640x480 pixels with a High Resolution Graphics Subsystem (HRGS) and 260 K colors for graphics and characters.
Page 13 Specifications for the FL inverter are described in Table 1-4. Table 1-4 FL Inverter Board Specifications Item Specifications Input Voltage (VDC) Power 12.5 Output Voltage (VAC) 1,100 r.m.s Current (mA) 7 mA r.m.s Frequency (KHz) Current limits (mA) 5.0 to 7.0 1-13 T6600C, T6600C/CD, T6600C/CDV...
Page 14: Power Supply
Table 1-5 Power Supply Unit Output Rating for the System DC Voltage (V) Maximum Current (A) For system 11.8 2.86 –5 –12 0.31 * For identification of output voltage ratings, refer to Section C.11 in Appendix C. 1-14 T6600C, T6600C/CD, T6600C/CDV...
Page 15: Troubleshooting
Troubleshooting Chapter 2 describes how to determine if a Field Replaceable Unit (FRU) in the T6600C is causing the computer to malfunction. The FRUs covered are: Power Supply System Board Back Panel Board Floppy Disk Drive Hard Disk Drive Keyboard...
Page 16: Troubleshooting Flowchart
If the T6600C works with no errors, the expansion card is malfunctioning. If the T6600C does not work or there is an error, the back panel board or system board is malfunctioning. Make sure the floppy disk drive is empty.
Page 17 Figure 2-1 Troubleshooting Flowchart (1/2) T6600C, T6600C/CD, T6600C/CDV...
Page 18 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. T6600C, T6600C/CD, T6600C/CDV...
Page 19: Power Supply Troubleshooting
Output Voltage Check Procedure 1 Power Cord Check The T6600C’s power cord carries AC voltage to the power supply unit from a wall outlet. Check 1 Turn off the power, make sure the power cord is firmly plugged into the AC IN socket and into a working wall outlet.
Page 20 (±5%) (±5%) (+8V/-4V) (±5%) (±5%) (±5%) If the output voltages are not correct, replace the power supply unit. If the output voltages are correct, the system board may be damaged. Go to Section 2.4, System Board Troubleshooting. T6600C, T6600C/CD, T6600C/CDV...
Page 21: System Board Troubleshooting
Procedure 1: Message Check Procedure 2: Printer Port LED Check Procedure 3: Diagnostic Test Program Execution Check Procedure 4: SCSI Logic Check Procedure 5: Sound Logic Check Procedure 6: System Board Replacement Check T6600C, T6600C/CD, T6600C/CDV...
Page 22 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 Procedure 3. Check 1 If one of the following error messages is displayed on the screen, press the F1 key as the message instructs.
Page 23 CPU EXCEPTION ERROR DMA PAGE REGISTER ERROR DMAC #1 ERROR DMAC #2 ERROR PIC #1 ERROR PIC #2 ERROR KEYBOARD ERROR KBC ERROR HDC ERROR HDD #0 ERROR HDD #1 ERROR NO FDD ERROR FDC ERROR TIMER INTERRUPT ERROR T6600C, T6600C/CD, T6600C/CDV...
Page 24 Turn off the T6600C’s power. Plug the printer port LED into the computer’s PRT/FDD connector. Hold down the space bar and turn on the T6600C’s power. Read the LED status from left to right as you face the back of the computer.
Page 25 = XXXXXXXXH WRITE DATA = XXXXXXXXH EXTENDED MEMORY PARITY ERROR ADDRESS = XXXX0000H - XXXXFFFFH PROTECTED MODE ERROR CPU EXCEPTION ERROR DMA page register test DMA PAGE REGISTER ERROR READ DATA = XXH WRITE DATA = XXH 2-11 T6600C, T6600C/CD, T6600C/CDV...
Page 26 Others H/W initialization Expansion system ROM CMOS RAM test ****Error in CMOS. Bad battery**** ****Error in CMOS. Bad check sum**** ****Error in CMOS. Bad configuration**** ****Error in CMOS. Bad time function**** Check system. Then press [F1] key 2-12 T6600C, T6600C/CD, T6600C/CDV...
Page 27 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 If an error is detected during these tests, replace the system board with a new one. 2-13 T6600C, T6600C/CD, T6600C/CDV...
Page 28 Step 5 Execute the HDD test in the diagnostic test program. Select 2:HDD2 for the Test drive number. If an error is detected during the HDD tests, replace the system board with a new one. 2-14 T6600C, T6600C/CD, T6600C/CDV...
Page 29 You will need to connect a mouse to execute this test. Preparation of a Spare HDD Step 1 Install Toshiba MS-DOS, Windows 3.1, Windows Sound System, and the Logitech Trackman Portable Driver. Step 2 Open the Windows file "WIN.INI" in a text editor.
Page 30 Click the black square to stop recording. Step 16 Click the black triangle to check that the sound source is played back. Step 17 Click the black square. Step 18 Select Options. Step 19 Select Set Recording Level. Step 20 Select microphone. 2-16 T6600C, T6600C/CD, T6600C/CDV...
Page 31 Procedure 6 System Board Replacement Check The system board may be damaged. Disassemble the T6600C following the steps described in Chapter 4, Replacement Procedures, and perform the following checks: Check 1 Replace the system board with a new one. Refer to Chapter 4 for instructions on how to remove and replace the unit.
Page 32 Floppy Disk Drive Troubleshooting This section describes how to determine if the T6600C’s internal 3.5-inch floppy disk drive is functioning properly. Perform the steps below starting with Procedure 1 and continue with the other procedures as required. Procedure 1: FDD Head Cleaning Check Procedure 2: External 5.25-inch FDD Check...
Page 33 Procedure 3 Diagnostic Test Program Execution Check The Floppy Disk Drive Diagnostic Test program is stored on the T6600C Diagnostics Disk. After loading Toshiba MS-DOS, run the diagnostic program. Refer to Chapter 3, Tests and Diagnostics, for more information about the diagnostics test procedures.
Page 34 The 3.5-inch Floppy Disk Drive is connected to the system board by the FDD cable. This cable may be disconnected from the system board or damaged. Disassemble the T6600C following the steps described in Chapter 4, Replacement Procedures and perform the follow-...
Page 35: Hard Disk Drive Troubleshooting
BACKUP command. Procedure 1 Partition Check Insert the Toshiba MS-DOS system disk and turn on the computer, then perform the follow- ing checks: Type C: and press Enter . If you cannot change to Drive C, go to Check 2. If Check 1 you can change to Drive C, go to Procedure 2.
Page 36 Procedure 2 Message Check When the T6600C’s 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 in- structed. Check 1 If any of the following messages appear, perform Check 2. If the following mes- sages do not appear, perform Check 4.
Page 37 Procedure 3 Format Check The T6600C’s HDD is formatted using the low level format program and the MS-DOS FORMAT program. To format the HDD, start with Check 1 below and perform the other steps as required. Check 1 Using the Toshiba MS-DOS system disk, partition the hard disk using the FDISK command.
Page 38 Procedure 4 Diagnostic Test Program Execution Check The HDD test program is stored in the T6600C Diagnostics Disk. Perform all of the HDD tests in the Hard Disk Drive Test option. Refer to Chapter 3 for more information about the HDD test program.
Page 39: Keyboard Troubleshooting
Keyboard Troubleshooting To determine if the T6600C’s 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...
Page 40: Display Troubleshooting
Procedure 1 Contrast Control Check The T6600C display contrast is controlled by the contrast dial, which is located on the right side of the display. Make sure the contrast dial is adjusted correctly. If the contrast does not change when you turn the contrast dial, perform Procedure 2.
Page 41 CN 3 CN 2 CN 1 LCD module Figure 2-3 T6600C Display Connection If any of these cables are not connected, firmly reconnect them and repeat Procedures 1 and 2. If the problem still exists, perform Procedure 5. 2-27 T6600C, T6600C/CD, T6600C/CDV...
Page 42 Replace the display cable with a new one and test the display again. If the problem still exists, perform Check 6. Check 6 The system board may be damaged. Replace the system board with a new one and test the display again. 2-28 T6600C, T6600C/CD, T6600C/CDV...
Page 43: The Diagnostic Test
The Diagnostic Test This chapter explains how to use the T6600C’s Diagnostic Test program (TESTCE66) to test the functions of the T6600C’s hardware modules. The Diagnostics Program is stored on the T6600C Diagnostic Disk and consists of 19 programs that are grouped into the Service Program Module (DIAGNOSTICS MENU) and the Test Program Module (DIAGNOSTICS TEST MENU).
Page 44 The following equipment is required to perform some of the T6600C Diagnostic Test pro- grams. The T6600C Diagnostics Disk (all tests) A formatted working disk for the floppy disk drive test (all tests) 3.5-inch 2HD/2DD disk for the internal 3.5-inch FDD 5.25-inch 2D disk for an external 5.25-inch FDD...
Page 45: Executing The Diagnostic Test
Reboot the computer, then proceed to the "Running the Diagnostics Program" section. Running the Diagnostics Program Insert the T6600C Diagnostics disk in the computer’s internal floppy disk drive. At the system prompt, change to Drive A (if necessary), type TESTCE66, and press Enter .
Page 46 : Specify : Exit NOTE: To exit the T6600C DIAGNOSTIC TEST MENU, press the Esc key. If a test program is in progress, press Ctrl + Break to exit the test program, or press Ctrl + C to stop the program.
Page 47 To select the DIAGNOSTIC TEST option from the DIAGNOSTICS MENU, set the highlight bar to 1 , and press Enter . The following screen appears: TOSHIBA personal computer T6600C DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp. 19XX DIAGNOSTIC TEST MENU : 1 - SYSTEM TEST...
Page 48 Selecting NO for ERROR STOP keeps the test running even if an error is found. Table 3-1 in Section 3.3 describes the function of each test on the subtest menu; and Table 3- 5 in Section 3.15 describes the error codes and error status for each error. T6600C, T6600C/CD, T6600C/CDV...
Page 49: Subtest Names
DISPLAY VRAM write/read Character attributes Character set 80*25 Character display Graphics display (color set 0/1) 640*200 Graphics display 640*400 Graphics display Display page “H” pattern display LED/DAC pallet TFT color display F. Z connector check SVGA mode T6600C, T6600C/CD, T6600C/CDV...
Page 50 Cross talk & 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 test EXPANSION Not used. Wraparound (F32BUS) PCMCIA wraparound SCSI interface check T6600C, T6600C/CD, T6600C/CDV...
Page 51 Table 3-2 Hardware Bit Status H/W Status Reserved — — Reserved — — Media type FDD type 1.6 MB 2 MB Reserved — — Drive A/B Ext. = A Ext. = B External FDD Reserved — — T6600C, T6600C/CD, T6600C/CDV...
Page 52 Reference data Current data When the read information is higher, the display is unchanged. To exit this screen, press the S key. Subtest 04 EEPROM ID check This subtest checks the EEPROM ID number through the KBC. 3-10 T6600C, T6600C/CD, T6600C/CDV...
Page 53: Memory Test
This subtest writes constant data and address data to extended memory (maxi- mum address 100000h), then reads new data and compares the results with the original data. The constant data is FFh, AAh, 55h, and 00h. 3-11 T6600C, T6600C/CD, T6600C/CDV...
Page 54 ‘5A’ data is run repeatedly to the test area to check the hit-miss ratio (on/off status). One test takes 3 seconds, and tests the 256 KB turbo cache memory. Number of miss hit < Number of hit → OK Number of miss hit ≥ Number of hit → Fail 3-12 T6600C, T6600C/CD, T6600C/CDV...
Page 55: 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 two subtests that test the T6600C’s keyboard actions. Move the highlight bar to the subtest you want to execute and press Enter .
Page 56 If this test does not detect an error, it returns to the subtest menu. If it detects an error, the following message appears: KBC - MOUSE INTERFACE ERROR [[ HALT OPERATION ]] Test end Continue Retry 3-14 T6600C, T6600C/CD, T6600C/CDV...
Page 57: 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 13 subtests that test the T6600C’s display in various modes. Move the highlight bar to the subtest you want to execute and press Enter .
Page 58 In this subtest, the character set (addressed 00h to FFh) is displayed in the 40*25 character mode as shown below. Press [Enter] KEY To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break . 3-16 T6600C, T6600C/CD, T6600C/CDV...
Page 59 320*200 GRAPHICS DISPLAY COLOR SET X : [X] GREEN YELLOW CYAN MAGENTA WHITE PRESS [ENTER] KEY Pressing Enter toggles between the two tests. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. 3-17 T6600C, T6600C/CD, T6600C/CDV...
Page 60 EVEN DOTS ODD DOTS ALL DOTS DRIVEN DRIVEN DRIVEN PRESS [Enter] KEY Pressing Enter changes the size of the displayed image. To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. 3-18 T6600C, T6600C/CD, T6600C/CDV...
Page 61 This subtest displays 2000 H characters on the entire screen, as illustrated below. HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH To exit this subtest and return to the DISPLAY TEST menu, press Ctrl + Break. 3-19 T6600C, T6600C/CD, T6600C/CDV...
Page 62 64 gradations (mode ‘5D’) of red, green, and blue succes- sively, and the last three display 256 gradations (mode ‘60’) of red, green, and blue. Press Enter to change the display. Press Ctrl + Break to exit. 3-20 T6600C, T6600C/CD, T6600C/CDV...
Page 63: Floppy Disk Test
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 T6600C’s internal floppy disk drive. The following messages appear after selecting the Floppy Disk Test. Answer each question with an appropriate response to execute the test.
Page 64 Subtest 01. The data is then read and compared to the original data. Subtest 04 Write Specified Address This subtest writes specified data to a specified track, head, and address. Subtest 05 Read Specified Address This subtest reads data from a specified track, head, and address. 3-22 T6600C, T6600C/CD, T6600C/CDV...
Page 65: Printer Test
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 T6600C supports three printer channels. Select the printer channel number, and press Enter to execute the selected subtest.
Page 66 The printer wraparound connector (34M741986G01) wiring diagram is described in Appendix G. This subtest checks the output and bidirectional modes of the data control and status lines through the printer wraparound connector. 3-24 T6600C, T6600C/CD, T6600C/CDV...
Page 67: Async Test
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 Not used. 3-25 T6600C, T6600C/CD, T6600C/CDV...
Page 68 Subtest 05 Not used. Subtest 06 Interrupt Test (IRQ 4, 3, 5) This subtest checks the Interrupt Request Level of IRQ 4, 3 and 5 from the send side. 3-26 T6600C, T6600C/CD, T6600C/CDV...
Page 69: Hard Disk 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 com- mand.
Page 70 Cross Talk & 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: B5ADADh, 4A5252h, EB6DB6h, 149249h, 63B63Bh, 9C49C4h, 2DB6DBh, D24924h. 3-28 T6600C, T6600C/CD, T6600C/CDV...
Page 71 This subtest writes specified 2-byte data to all of the cylinders on the HDD. Subtest 10 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. 3-29 T6600C, T6600C/CD, T6600C/CDV...
Page 72: 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 T6600C’s real timer functions. Move the highlight bar to the subtest you want to execute and press Enter .
Page 73 Current date : 01-01-1989 Current time : 00:00:37 Pressing Enter displays the following: Current date : 12-31-1988 Current time : 23:59:58 PRESS [Enter] KEY TO EXIT TEST Press Ctrl + Break to exit. 3-31 T6600C, T6600C/CD, T6600C/CDV...
Page 74: Ndp Test
To execute the NDP Test, select 10 from the DIAGNOSTIC TEST menu, press Enter , and follow the directions on the screen. The NDP test contains one subtest that tests the T6600C’s NDP functions. Move the highlight bar to Subtest 01 and press Enter . Subtest 01...
Page 75: Expansion Test
To execute the Expansion Test, select 11 from the DIAGNOSTIC TEST menu, press Enter , and follow the directions on the screen. The Expansion test contains four subtests that test the T6600C’s expansion functions. Move the highlight bar to the subtest you want to execute and press Enter .
Page 76 Data line ww=write data, rr=read data 00003 — — Speaker line 00004 40, 80 Wait line (40<XX<80) 00005 Other lines (BSY#, BVD1) nn=21, 00 Subtest 04 SCSI interface This subtest reads the "0" cylinder on the HDD. 3-34 T6600C, T6600C/CD, T6600C/CDV...
Page 77: Error Codes And Error Status Names
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 3-35 T6600C, T6600C/CD, T6600C/CDV...
Page 78 Bad Track Error ECC Error ECC Recover Enable HDC Error Seek Error Time-out Error Drive Not Ready Undefined Error Write Fault Status Error No CO-PROCESSOR Control Word Error Status Word Error Bus Error Addition Error Multiplication Error 3-36 T6600C, T6600C/CD, T6600C/CDV...
Page 79 Address Line (A23..17) Error Protected Mode Not Changed !!! PCMCIA Address Line Error REG# Line Error CE#1 Line Error CE#2 Line Error Data Line Error Wait Line Error BSY# Line Error BVD1 Line Error No PCMCIA 3-37 T6600C, T6600C/CD, T6600C/CDV...
Page 80: Hard Disk Test Detail Status
CORR “0” --- Other (Corrected data) “1” --- Correctable data error is corrected. “0” --- Other (Index) “1” --- Index is sensed. “0” --- Other (Error) “1” --- The previous command was terminated with an error. 3-38 T6600C, T6600C/CD, T6600C/CDV...
Page 81 “1” --- Illegal command error or a drive status error occurred. TK00 “0” --- The hard disk found Track 0 during a recalibrate command. (Track 0) “1” --- The hard disk could not find Track 0 during a recalibrate command. —— Not used. 3-39 T6600C, T6600C/CD, T6600C/CDV...
Page 82: Hard Disk Format
CAUTION: The contents of the hard disk will be erased when this program is ex- ecuted. Before executing the function, transfer the contents of the hard disk onto a backup system. This can be done with the Toshiba MS-DOS BACKUP command. See the Toshiba MS-DOS manual for details on using the BACKUP command.
Page 83 CAUTION: The contents of the hard disk will be erased when this program is ex- ecuted. Before executing the function, transfer the contents of the hard disk onto a backup system. This can be done with the Toshiba MS-DOS BACKUP command. See the Toshiba MS-DOS manual for details on using the BACKUP command.
Page 84 Item (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 formatted as a bad track automatically. 3-42 T6600C, T6600C/CD, T6600C/CDV...
Page 85 Press Enter to return to the Hard Disk Format menu. NOTE: 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. 3-43...
Page 86: Head Cleaning
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 function is completed. 3-44 T6600C, T6600C/CD, T6600C/CDV...
Page 87: Log Utilities
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]] 3-45 T6600C, T6600C/CD, T6600C/CDV...
Page 88 The 7 key writes the log information to a floppy disk. If an “error retry OK” condition occurs, a capital “R” is placed at the beginning of the error status. However, it is not added to the error count. 3-46 T6600C, T6600C/CD, T6600C/CDV...
Page 89: Running Test
Printer wraparound test (Y/N) ? Selecting Y (Yes) executes the printer wraparound test. A printer wraparound connector must be connected to the PRT/FDD port on the back of the T6600C to properly execute this test. Select Y or N and press Enter . The following message appears: Serial #A wraparound test (Y/N) ? Selecting Y (Yes) executes the ASYNC wraparound test.
Page 90 Select Yes or No and press Enter . The following message appears: Mount the work disk(s) on the drive(s), then press [Enter] key. [Warning] : The contents of the disk(s) will be destroyed.] This program executes continuously. To terminate the program, press Ctrl + Break . 3-48 T6600C, T6600C/CD, T6600C/CDV...
Page 91: Floppy Disk Drive Utilities
FDD and HDD. 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 formats a 5.25-inch or 3.5-inch floppy disk in one of the following formats: 2D: Double-sided, double-density, 48/67.5 TPI, MFM mode, 512 bytes, 9...
Page 92 When COPY is selected, the following message appears: FLOPPY DISK FORMAT & COPY : VX.XX Type select (0:2DD-2DD,1:2D-2D,2:2D-2HD,3:2HD-2HD) ? Selecting a media/drive type number displays a message similar to the one below: Insert source disk into drive A: Press any key when ready. 3-50 T6600C, T6600C/CD, T6600C/CDV...
Page 93 —— Max. address —— [Track ] = 0079 [ Head ] = 01 [Sector] = 09 Track number ?? Set the track number you want to dump. The system accesses the disk and dumps a list. 3-51 T6600C, T6600C/CD, T6600C/CDV...
Page 94: System Configuration
* - 1 ASYNC ADAPTER * - 1 HARD DISK DRIVE(S) * - 1 PRINTER ADAPTER * - 1 MATH CO-PROCESSOR * - XXXXXKB EXTENDED MEMORY Press [Enter] Key Press Enter to return to the DIAGNOSTIC MENU. 3-52 T6600C, T6600C/CD, T6600C/CDV...
Page 95 3.23 SETUP 3.23.1 Function Description Setup displays the T6600C’s current system setup information as listed below. Memory Total Base Extended Shadow BIOS Display Display adapter Display device LCD display mode Hard disk HDD #0 capacity HDD #1 capacity Power-on password...
Page 96: Accessing The Setup Program
The options, “Display Device” and “LCD Display Mode” differ depending on the option selected for “Display Adapter.” Notice that selecting the type of disk drive is not an option. The T6600C automatically determines what type of internal disk drive is installed. Also, you do not have to run SETUP to use an external 5.25-inch disk drive.
Page 97 Review your changes. If you need to make more alterations, press N and go back to Step 1 above. If the new values are correct, press Y . The new values are recorded into CMOS memory and the system automatically reboots. T6600C, T6600C/CD, T6600C/CDV 3-55...
Page 98 You cannot change this value. However, if you set Hard RAM, this value changes automatically. Extended Displays the amount of extended memory the T6600C has available. You cannot change this value. Shadow BIOS The Setup program displays 128 KB of RAM, which is reserved for the Shadow BIOS ROM.
Page 99 This option selects between using the CRT only (CRT mode), or using both the CRT and Color LCD display simultaneously (dual display mode). In either case, if a CRT is connected to the T6600C, the display mode of the Color LCD display is set to either color or monochrome, according to the type of the CRT (color or monochrome).
Page 100 Not registered If the passwords do not match, the following message appears along with a beep sound. Entry Error!! The display then returns to the "Registered" state. Repeat the steps to reset the password. 3-58 T6600C, T6600C/CD, T6600C/CDV...
Page 101 ESC key. NOTE: Multiple passwords can be set up on the T6600C using the PWSETUP.EXE program found in the C:\DOS directory. However, you cannot delete these passwords using the SETUP screen.
Page 102 FDD B Printer port type This option sets the PRT/FDD connector on the rear panel of the T6600C to either an output-only or a bi-directional port. The option is valid only when the PRT/FDD connector is used for the printer, that is, the "External FDD/ PRT"...
Page 103 Disables display automatic power off. Numlock Init. state This option enables or disables the initial Num Lock state. Enables the Num Lock when the computer is turned Disables the Num Lock when the computer is turned T6600C, T6600C/CD, T6600C/CDV 3-61...
Page 104 Sound I/O base address This option selects the Sound I/O base address. 0530H 0604H 0E80H Disabled System speaker This option enables or disables the system speaker. Enabled Enables the system speaker. Disabled Disables the system speaker. 3-62 T6600C, T6600C/CD, T6600C/CDV...
Page 105 LED Board Before You Begin Look over the procedures in this section before you begin disassembling the T6600C. Famil- iarize yourself with the disassembly and reassembly steps, then begin each procedure by disconnecting the power cord and all external cables connected to the computer.
Page 106 When assembling the computer, make sure you use the correct screws to secure the various pieces in place. Screw sizes are listed in the corresponding figures. The T6600C contains many sharp edges and corners, so be careful not to injure yourself.
Page 107 After you have disassembled the computer and fixed or repaired the problem that was causing it to operate abnormally, you will need to reassemble it. While assembling the T6600C, remember the following general points: Take your time, making sure you follow the instructions closely. Most problems arise when you get in a hurry.
Page 108 Locate the PCMCIA slot cover and slide it up to expose the PCMCIA card (Figure 4-1). Figure 4-1 Opening the PCMCIA Slot Cover Slide the release/lock button downward to recess the metal tab (Figure 4-2). Figure 4-2 The PCMCIA Slot T6600C, T6600C/CD, T6600C/CDV...
Page 109 Grasp the edges of the card and slide it out of the slot. Installing an Optional PCMCIA Card To install an optional PCMCIA card in the T6600C, follow the steps below and refer to Figures 4-1 and 4-2. Slide the PCMCIA slot cover up to expose the PCMCIA slot (Figure 4-1).
Page 110 Optional Memory Card(s) Removing an Optional Memory Card(s) The T6600C has two memory expansion slots. To remove an optional memory card from a slot, follow the steps below and refer to Figure 4-4. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 111 Installing an Optional Memory Card To install an optional memory card in the T6600C, follow the steps below and refer to Figure 4-4. Turn the memory card so the label faces up and the printed instructions face down. Carefully slide the memory card into one of the memory expansion slots. You may install the memory card in either slot.
Page 112 The Keyboard Unit Removing the Keyboard Unit To remove the keyboard unit from the T6600C, follow the steps below and refer to Figures 4-5 and 4-6. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 113 Set the keyboard connector cover in place and secure it with two M3x6 silver screws (Figure 4-5). Press the two screw covers into place (Figure 4-5). Place the keyboard unit onto the computer. Install the optional memory card(s) and optional PCMCIA card as described in Sections 4.3 and 4.2. T6600C, T6600C/CD, T6600C/CDV...
Page 114 Figure 4-7 Turbo Cache Memory Module Installing an Optional Turbo Cache Memory Module To install a turbo cache memory module in the T6600C, follow the steps below and refer to Figure 4-7. Install the memory module into the turbo cache memory socket on the system board.
Page 115 Sections 4.2 through 4.5. Turn the keyboard unit over and remove the eight M2.5x6 silver screws securing the bottom cover (Figure 4-8). Figure 4-8 Removing the Keyboard Remove the bottom cover from the keyboard assembly. T6600C, T6600C/CD, T6600C/CDV 4-11...
Page 116 NOTE: If you are replacing the keyboard cable, it can be removed from the keyboard assembly by lifting it out of the cable holder on the assembly. Figure 4-10 Disconnecting the Keyboard Cable and Keyboard Interface Cable 4-12 T6600C, T6600C/CD, T6600C/CDV...
Page 117 Figure 4-11 Removing the Keyboard from the Keyboard Assembly Installing the Keyboard To install the T6600C’s keyboard, follow the steps below and refer to Figures 4-8 through 4- Place the keyboard in the keyboard assembly as illustrated in Figure 4-11, and secure it with two M2.5x4 screws.
Page 118: Back Cover
Back Cover Removing the Back Cover To remove the T6600C’s back cover, follow the steps below and refer to Figure 4-12. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 119 Installing the Back Cover To install the T6600C’s back cover, follow the steps below and refer to Figure 4-12. Place the back cover on the computer and secure it with seven M3x6 silver screws. Install the optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.5 through 4.2.
Page 120 Disconnect the Z connector and feature connector cables from P305 and P4 on the card. Carefully pull the card out the rest of the way. Disconnect the Z connector and feature connector cables from the system board by pulling them towards you. 4-16 T6600C, T6600C/CD, T6600C/CDV...
Page 121 Figure 4-14 Mambo Card Cables and Connectors Fit the right side of the expansion card into a pair of card guides. Note that smaller cards do not use the guides (Figure 4-15). Figure 4-15 Locating the Card Guides T6600C, T6600C/CD, T6600C/CDV 4-17...
Page 122 Secure the expansion card with an M3x6 screw (Figure 4-13). Install the back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.7 and 4.5 through 4.2. 4-18 T6600C, T6600C/CD, T6600C/CDV...
Page 123: Bottom Cover
Bottom Cover Removing the Bottom Cover To remove the T6600C’s bottom cover, follow the steps below and refer to Figures 4-17 and 4-18. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 124 Figure 4-18 Removing the Bottom Cover Installing the Bottom Cover To install the T6600C’s bottom cover, follow the steps below and refer to Figures 4-17 and 4-18. Place the bottom cover on the computer and secure it with fourteen (14) M3x6 silver screws (Figure 4-18).
Page 125 4.10 HDD Removing the HDD To remove the T6600C’s HDD, follow the steps below and refer to Figures 4-19 and 4-20. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 126 Place the HDD in the computer and secure it with four M3x6 screws (Figure 4-19). Install the bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.9 through 4.7, and 4.5 through 4.2. 4-22 T6600C, T6600C/CD, T6600C/CDV...
Page 127 4.11 5.25-inch Bay (T6600C) Removing the 5.25-inch Bay To remove the T6600C’s 5.25-inch bay, follow the steps below and refer to Figure 4-21. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 128 4.12 CD-ROM Drive (T6600C/CD and T6600C/CDV) Removing the CD-ROM Drive To remove the T6600C/CD or T6600C/CDV’s CD-ROM drive, follow the steps below and refer to Figures 4-22 and 4-23. Turn off the power to the computer, then disconnect the power cord and all external cables connected to the computer.
Page 129 Remove the four M3x4 screws securing the bracket to the CD-ROM drive, then lift off the bracket. Installing the CD-ROM Drive To install the T6600C/CD or T6600C/CDV’s CD-ROM drive, follow the steps below and refer to Figures 4-22 and 4-23. Secure the CD-ROM bracket to the drive with four M3x4 screws.
Page 130 HDD, and 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV) as described in Sections 4.2 through 4.5 and 4.7 through 4.12. Disconnect the DC fan cable from PJ8 on the back panel board and remove the two M3x6 screws securing the back panel frame (Figure 4-24).
Page 131 M3x6 screws (Figure 4-24). Connect the DC fan cable to PJ8 on the back panel board (Figure 4-24). Install the 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/ CDV), HDD, bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.12 through 4.7 and 4.5 through 4.2.
Page 132 HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), and back panel board as described in Sections 4.2 through 4.5 and 4.7 through 4.13. Remove the two M3x6 screws securing the DC fan unit and lift it out.
Page 133 Place the DC fan unit in the computer, and secure the unit with two M3x6 screws. Install the back panel board, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/ CD and T6600C/CDV), HDD, bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.13 through 4.7 and 4.5...
Page 134: System Board
HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), back panel board, and DC fan unit as described in Sections 4.2 through 4.5 and 4.7 through 4.14.
Page 135 Disconnect the display cable by releasing the stopper from PJ630, then discon- nect the pressure plate LED cable from PJ430 under the system board. Carefully lift out the system board. Figure 4-29 Removing the System Board 4-31 T6600C, T6600C/CD, T6600C/CDV...
Page 136 Set the connector panel board in place and secure it with two M3x6 screws and two M2.5x6 screws (Figure 4-27). Install the DC fan unit, back panel board, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), HDD, bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.14 through...
Page 137: Rtc Battery
HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), back panel board, DC fan unit, and system board as described in Sections 4.2 through 4.5 and 4.7 through 4.15.
Page 138 Connect the RTC battery cable to PJ210. Install the system board, DC fan unit, back panel board, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), HDD, bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.15 through 4.7 and 4.5 through 4.2.
Page 139 HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), back panel board, DC fan unit, and system board as described in Sections 4.2 through 4.5 and 4.7 through 4.15.
Page 140 Place the FDD unit into the system unit and secure it with four M3x6 screws. (Figure 4-31) Install the system board, DC fan unit, back panel board, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), HDD, bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.15 through 4.7 and 4.5 through 4.2.
Page 141 HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), back panel board, DC fan unit, and system board as described in Sections 4.2 through 4.5 and 4.7 through 4.15.
Page 142: Power Supply Unit
HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), back panel board, DC fan unit, and system board as described in Sections 4.2 through 4.5 and 4.7 through 4.15.
Page 143 Set the power supply unit in place and secure it with four M3x6 screws. Set the expansion card support in place and secure it with two M3x6 screws. Install the system board, DC fan unit, back panel board, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), HDD, bottom cover,...
Page 144: Led Board
HDD, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), back panel board, DC fan unit, and system board as described in Sections 4.2 through 4.5 and 4.7 through 4.15.
Page 145 Connect the LED cable to PJ1 and the display switch cable to PJ2 on the LED board. Install the system board, DC fan unit, back panel board, 5.25-inch bay (T6600C) or CD-ROM drive (T6600C/CD and T6600C/CDV), HDD, bottom cover, optional expansion card, back cover, optional turbo cache memory module, keyboard unit, optional memory card(s), and optional PCMCIA card as described in Sections 4.15 through 4.7 and 4.5 through 4.2.
Page 146: Display Mask
Continue unlatching the mask along the sides (four latches on each side), and at the bottom (two latches). There is also a latch at the small support and three latches at the larger support. Figure 4-36 Removing the Display Mask 4-42 T6600C, T6600C/CD, T6600C/CDV...
Page 147 (four). Secure the display mask with four M3x6 silver screws at the display hinges and the top corners. Attach the screw covers at each display hinge and at the top corners of the display. 4-43 T6600C, T6600C/CD, T6600C/CDV...
Page 148: Fl Inverter Board
To install the FL inverter board, follow the steps below and refer to Figure 4-37. Secure the FL inverter board with three M3x6 screws. Connect the two FL cables to CN 2 and CN 3, and the display cable to CN1. Install the display mask as described in Section 4.21. 4-44 T6600C, T6600C/CD, T6600C/CDV...
Page 149: Lcd Module
Remove the four M3x6 screws securing the LCD module to the LCD cover (Figure 4-38). Note the ground cable secured by the bottom left screw. Carefully rotate the LCD module forward (Figure 4-38). Figure 4-38 Removing the LCD Module 4-45 T6600C, T6600C/CD, T6600C/CDV...
Page 150 To install the LCD module, follow the steps below and refer to Figures 4-38 and 4-39. Place the LCD module face down on the front of the T6600C and connect the three display cables to CN 1, CN 2, and CN 3 on the LCD module (Figure 4-39).
Page 151 (Figure 4-40). Remove the M2x4 silver screw from the cable side of the LCD module (Figure 4-40). Figure 4-40 Unbending the LCD Module Latches 4-47 T6600C, T6600C/CD, T6600C/CDV...
Page 152 To separate the FL unit from the back frame, remove the four M2x4 flat silver screws. (Figure 4-42). Figure 4-42 Removing the FL Unit from the Display Panel 4-48 T6600C, T6600C/CD, T6600C/CDV...
Page 153 Place the assembly in the front frame and carefully bend the three latches back into place (Figure 4-40). Secure the M2x4 silver screw to the cable side of the LCD module (Figure 4-40). Install the LCD module and display mask as described in Sections 4.23 and 4.21. 4-49 T6600C, T6600C/CD, T6600C/CDV...
Page 154: Appendix A Handling The Lcd Module
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. T6600C, T6600C/CD, T6600C/CDV...
Page 155 Be sure to quickly wipe off any liquid. 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. T6600C, T6600C/CD, T6600C/CDV...
Page 156 Do not expose the module to direct sunlight or strong ultraviolet rays for long periods. Do not store the module at temperatures below specifications. Cold can cause the liquid crystals to freeze, lose their elasticity or otherwise suffer damage. T6600C, T6600C/CD, T6600C/CDV...
Page 157 Do not disassemble the LCD module. Disassembly can cause malfunctions. 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 panels’ polarization. T6600C, T6600C/CD, T6600C/CDV...
Page 158 Appendix B Board Layout T6600C System Board (Front) Figure B-1 T6600C System Board (front) T6600C, T6600C/CD, T6600C/CDV...
Page 159 Figure B-2 T6600C System Board (back) T6600C, T6600C/CD, T6600C/CDV...
Page 160 Table B-1 T6600C ICs and Connectors on the System Board (front) Mark Number Name IC 20 Central Processing Unit (CPU), 80486DX2 IC 40 Turbo Cache Memory Socket IC 50 System Controller Gate Array IC 80 PCMCIA Gate Array IC 120 to IC 123...
Page 161 Table B-2 T6600C Connectors on the System Board (back) Mark Number Name PJ 161 Memory Card Connector PJ 380 Volume Connector PJ 390 Speaker Connector PJ 490, PJ 491 Back Panel Connector PJ 581 Z Connector PJ 580 Feature Connector...
Page 162: Pin Assignments
(Not connected) — (Not connected) — (Pulled down) — (Not connected) — D08;100 (Not connected) — — (Pulled down) — D09;100 D24;100 — D25;100 D10;100 D26;100 D11;100 D27;100 D12;100 D28;100 D13;100 D29;100 D14;100 D30;100 D15;100 D31;100 — — T6600C, T6600C/CD, T6600C/CDV...
Page 163 (Not connected) — (Pulled down) — (Not connected) — D08;100 (Not connected) — (Not connected) — (Pulled down) — D09;100 D24;100 — D25;100 D10;100 D26;100 D11;100 D27;100 D12;100 D28;100 D13;100 D29;100 D14;100 D30;100 D15;100 D31;100 — — T6600C, T6600C/CD, T6600C/CDV...
Page 164 — PDB07;100 DCD1;111 — KBVCC — PDB05;100 SD1;011 PDB03;100 DSR1;111 PDB04;100 RD1;011 PCLR;100 — PDB02;100 DTR1;111 PDB00;100 RI1;111 PDB01;100 CTS1;111 — — EXKBDT;110 RTS1;111 KBVCC — SELCT;100 EXKBCK;110 ERROR;000 KBVCC — — MUSDAT;100 PE;100 — ACK;000 MUSCLK;100 T6600C, T6600C/CD, T6600C/CDV...
Page 165 PJ4 FDD (Int) Connector (26-pin) Table C-6 FDD (Int) Connector Pin Assignments (26-pin) Signal Signal — ISTEP;000 INDEX;000 — — IWDAT;000 IDSL;000 — — IWEN;000 DSKCHG;000 — — ITRO;000 IRDY;000 — IHMED;000 IWPR;000 IMON;000 — ILOWD;000 IRDAT;000 IDIRC;000 — — ISSEL;000 T6600C, T6600C/CD, T6600C/CDV...
Page 166 Table C-11 PJ381 Headphone Connector Pin Assignments (6-pin) Signal Signal — — (Left) (PHONE) (Right) (Not connected) — Table C-12 PJ390 Internal Speaker Connector Pin Assignments (4-pin) Signal Signal Right A Left A Right B Left B T6600C, T6600C/CD, T6600C/CDV...
Page 167 PJ380 Sound Gain Control Table C-13 PJ380 Volume Board Connector Pin Assignments (6-pin) Signal Signal LVOL;100 RVOL;100 LVOL;110 RVOL;110 — — T6600C, T6600C/CD, T6600C/CDV...
Page 168 — MCVP1A — MCVP2A — CADD16;100 CADD22;100 CADD15;100 CADD23;100 CADD12;100 CADD24;100 CADD07;100 CADD25;100 CADD06;100 — CADD05;100 CRESET;100 CADD04;100 CWAIT;000 CADD03;100 INPACK;000 CADD02;100 REG;000 CADD01;100 CBVD2;100 CADD00;100 CBVD1;100 CDAT00;100 CDAT08;100 CDAT01;100 CDAT09;100 CDAT02;100 CDAT10;100 CWP;100 CD2;000 — — T6600C, T6600C/CD, T6600C/CDV...
Page 169 PJ440, PJ441 Power Supply Connectors Table C-16 PJ440 Power Supply Connector Pin Assignments (11-pin) Signal Signal — — — — — — — — M12V — Table C-17 PJ441 Power Supply Connector Pin Assignments (10-pin) Signal Signal P24V P12V P12V P12V T6600C, T6600C/CD, T6600C/CDV...
Page 170 BALE;100 AEN;100 $14R3M;101 SMER;000 SBHE;000 — — SA19;100 LA23;100 IOW;000 IRQ10;100 SA18;100 LA22;100 — — IOR;000 IRQ11;100 SA17;100 LA21;100 DACK3;000 IRQ12;100 — — SA16;100 LA20;100 DRQ3;100 IRQ15;100 SA15;100 IRQ14;100 — — DACK1;000 DACK0;000 SA14;100 — DRQ1;100 DRQ0;100 T6600C, T6600C/CD, T6600C/CDV...
Page 171 SCSID7;000 SA04;100 P12V — SA03;100 SCSID6;000 P12V — P12V — SA02;100 SCSID5;000 SA01;100 P12V — SA00;100 SCSID4;000 MEMR;000 — HDC0CS;010 SCSID3;000 HDDLED;000 — HDC1CS;010 SCSID2;000 P12V — P12V — EXIO16;000 SCSID1;000 LA17;100 M12V — LA16;100 SCSID0;000 C-10 T6600C, T6600C/CD, T6600C/CDV...
Page 172 Signal Signal DACR0;100 — DACR1;100 DACB0;100 — DACB1;100 DACR2;100 — DACR3;100 DACB2;100 — DACB3;100 DACR4;100 — DACR5;100 DACB4;100 — DACB5;100 DACG0;100 — DACG1;100 LLP;100 — LFP;100 DACG2;100 — DACG3;100 — — LFR;100 DACG4;100 LPCLK;100 DACG5;100 ZENSEN;000 T6600C, T6600C/CD, T6600C/CDV C-11...
Page 173 FLTFP;140 — FLTLP;140 DATAG2;120 DATAR4;120 DATAB1;120 DATAR3;120 DATAB0;120 — DENAB;140 DATAR5;120 DATAB2;120 DATAG4;120 PNEL0;100 DATAG3;120 PNEL1;100 — — DATAG5;120 P24V DATAB4;120 LCDVCC DATAB3;120 P24V — — DATAB5;120 — DATAR1;120 LCDVCC DATAR0;120 FLOFF;100 — — DATAR2;120 — C-12 T6600C, T6600C/CD, T6600C/CDV...
Page 174 SCSID3;000 — — — SCSID4;000 — — SCBSY;000 SCSID5;000 — — SCACK;000 SDSID6;000 — — SCRST;000 SCSID7;000 — — SCMSG;000 SCSIDP;000 — — SCSEL;000 — — — SCSICD;000 — — — SCREQ;000 — — — SCSIIO;000 T6600C, T6600C/CD, T6600C/CDV C-13...
Page 175 Appendix D USA Display Codes Table D-1 USA Display Codes T6600C, T6600C/CD, T6600C/CDV...
Page 176 Appendix E Keyboard Scan/Character Codes Table E-1 KB Code to ASCII Code Conversion Table (1/5) Cap No. Keytop Lower Upper Caps Lock Ctrl Lower Upper ‘ & Back space T6600C, T6600C/CD, T6600C/CDV...
Page 177 Table E-1 KB Code to ASCII Code Conversion Table (2/5) Cap No. Keytop Lower Upper Caps Lock Ctrl Lower Upper Caps Lock T6600C, T6600C/CD, T6600C/CDV...
Page 178 Table E-1 KB Code to ASCII Code Conversion Table (3/5) Cap No. Keytop Lower Upper Caps Lock Ctrl Lower Upper “ ‘ Enter Shift < > Shift Ctrl Space T6600C, T6600C/CD, T6600C/CDV...
Page 179 Table E-1 KB Code to ASCII Code Conversion Table (4/5) Cap No. Keytop Lower Upper Caps Lock Ctrl Lower Upper ← Home ↑ ↓ PgUp PgDn → T6600C, T6600C/CD, T6600C/CDV...
Page 180 Table E-1 KB Code to ASCII Code Conversion Table (5/5) Cap No. Keytop Lower Upper Caps Lock Ctrl Lower Upper PrtSc Scrl Lock Pause T6600C, T6600C/CD, T6600C/CDV...
Page 181 Appendix F Key Layout United States (US) Keyboard Figure F-1 US Keyboard United Kingdom (UK) Keyboard Figure F-2 UK Keyboard T6600C, T6600C/CD, T6600C/CDV...
Page 182 German (GR) Keyboard Figure F-3 GR Keyboard French (FR) Keyboard Figure F-4 FR Keyboard T6600C, T6600C/CD, T6600C/CDV...
Page 183 Spanish (SP) Keyboard Figure F-5 SP Keyboard Italian (IT) Keyboard Figure F-6 IT Keyboard T6600C, T6600C/CD, T6600C/CDV...
Page 184 Scandinavian (SC) Keyboard Figure F-7 SC Keyboard Swiss-German (SL) Keyboard Figure F-8 SL Keyboard T6600C, T6600C/CD, T6600C/CDV...
Page 185 Canadian (Specialized) Keyboard Figure F-9 Canadian Keyboard F.10 Keycap Number Keyboard Figure F-10 Keycap Number Keyboard T6600C, T6600C/CD, T6600C/CDV...
Page 186 Figure G-2 RS-232-C Wraparound Connecter RS-232-C Direct Cable (9-pin to 9-pin) (3) TD (4) DTR (7) RTS (5) GND (2) RD (1) CD (6) DSR (8) CTS (9) RI Figure G-3 RS-232-C Direct Cable (9-pin to 9-pin) T6600C, T6600C/CD, T6600C/CDV...
Page 187 RS-232-C Direct Cable (9-pin to 25-pin) (1) CD (2) RD (3) TD (4) DTR (22) (5) GND (7) RTS (6) DSR (20) (8) CTS (9) RI Figure G-4 RS-232-C Direct Cable (9-pin to 25-pin) T6600C, T6600C/CD, T6600C/CDV...
Page 188 For security reasons, the Password Deletion Disk will not be distributed to Service Providers. You must obtain the current password from the computer's owner to service the machine. If the owner forgets the password, contact your Toshiba representative for further action. T6600C, T6600C/CD, T6600C/CDV...
Page 189 Rewriting the BIOS Follow the procedures below to start the BIOS rewrite program. Turn off the power to the T6600C. Remove the external cable, memory card, and PCMCIA card. Turn on the power while holding down the F12 key. (Keep holding down the key until the system speaker sounds a beep.)

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