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...System Board Troubleshooting 2-10 2.5 Floppy Disk Drive (FDD) Troubleshooting 2-17 2.6 Hard Disk Drive (HDD) Troubleshooting 2-19 2.7 Keyboard ...Troubleshooting 2-23 2.8 Pointing Device Troubleshooting 2-24 2.9 Display Troubleshooting 2-25 Chapter 3 Tests and Diagnostics 3.1 The Diagnostic Test 3-1 3.2 Executing the Diagnostic Test 3-3 3.3 Subtest Names ...3-7 3.4 System Test ...3-9 3.5 Memory Test ...3-10 3.6 Keyboard Test ...3-12 3.7 Display Test...3-14 3.8 Floppy Disk Test 3-17 3.9 Printer Test...3-20 Libretto 50CT/70CT...
...System Board Troubleshooting 2-10 2.5 Floppy Disk Drive (FDD) Troubleshooting 2-17 2.6 Hard Disk Drive (HDD) Troubleshooting 2-19 2.7 Keyboard ...Troubleshooting 2-23 2.8 Pointing Device Troubleshooting 2-24 2.9 Display Troubleshooting 2-25 Chapter 3 Tests and Diagnostics 3.1 The Diagnostic Test 3-1 3.2 Executing the Diagnostic Test 3-3 3.3 Subtest Names ...3-7 3.4 System Test ...3-9 3.5 Memory Test ...3-10 3.6 Keyboard Test ...3-12 3.7 Display Test...3-14 3.8 Floppy Disk Test 3-17 3.9 Printer Test...3-20 Libretto 50CT/70CT...
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... ...3-44 3.22 Floppy Disk Drive Utilities 3-45 3.23 System Configuration 3-49 3.24 SETUP ...3-50 Chapter 4 Replacement Procedures 4.1 Overview ...4-1 4.2 Battery Pack ...4-6 4.3 Optional PC Card...4-8 4.4 Hard Disk Drive (HDD 4-10 4.5 Optional Memory... Module 4-12 4.6 Keyboard ...4-14 4.7 Display Assembly 4-16 4.8 RTC Battery ...4-19 4.9 System Board ...4-20 4.10 Display Mask ...4-21 4.11 FL Inverter Board 4-23 4.12 LCD Module ...4-25 4.13 Power Switch Board 4-27 4.14 AccuPoint Board 4-29 4.15 LCD Flexible Cable 4-31 vi Libretto 50CT/70CT...
... ...3-44 3.22 Floppy Disk Drive Utilities 3-45 3.23 System Configuration 3-49 3.24 SETUP ...3-50 Chapter 4 Replacement Procedures 4.1 Overview ...4-1 4.2 Battery Pack ...4-6 4.3 Optional PC Card...4-8 4.4 Hard Disk Drive (HDD 4-10 4.5 Optional Memory... Module 4-12 4.6 Keyboard ...4-14 4.7 Display Assembly 4-16 4.8 RTC Battery ...4-19 4.9 System Board ...4-20 4.10 Display Mask ...4-21 4.11 FL Inverter Board 4-23 4.12 LCD Module ...4-25 4.13 Power Switch Board 4-27 4.14 AccuPoint Board 4-29 4.15 LCD Flexible Cable 4-31 vi Libretto 50CT/70CT...
User Guide
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... colors at a clock speed of 1.58GB. q Hard Disk Drive (HDD) The Libretto 50CT has a 2.5-inch HDD with a capacity of 815MB. ∗The Libretto 70CT has a 2.5-inch HDD with MMX technology running at a resolution of up the Real Time Clock and CMOS memory. 1 Hardware Overview 1.1 Features 1 1.1 Features The Libretto 50CT/70CT uses Toshiba's advanced Large Scale Integration (LSI) and...
... colors at a clock speed of 1.58GB. q Hard Disk Drive (HDD) The Libretto 50CT has a 2.5-inch HDD with a capacity of 815MB. ∗The Libretto 70CT has a 2.5-inch HDD with MMX technology running at a resolution of up the Real Time Clock and CMOS memory. 1 Hardware Overview 1.1 Features 1 1.1 Features The Libretto 50CT/70CT uses Toshiba's advanced Large Scale Integration (LSI) and...
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...) Troubleshooting 2-17 Procedure 1 FDD Head Cleaning Check 2-17 Procedure 2 Diagnostic Test Program Execution Check 2-17 Procedure 3 Connector Check and Replacement Check 2-18 2.6 Hard Disk Drive (HDD) Troubleshooting 2-19 Procedure 1 Partition Check 2-19 Procedure 2 Message Check 2-20 Procedure 3 Format Check 2-20 Procedure 4 Diagnostic Test Program Execution Check ... Check 2-24 2.9 Display Troubleshooting 2-25 Procedure 1 Diagnostic Test Program Execution Check 2-25 Procedure 2 Connector Check 2-25 Procedure 3 Replacement Check 2-25 Libretto 50CT/70CT Maintenance Manual 2-iii
...) Troubleshooting 2-17 Procedure 1 FDD Head Cleaning Check 2-17 Procedure 2 Diagnostic Test Program Execution Check 2-17 Procedure 3 Connector Check and Replacement Check 2-18 2.6 Hard Disk Drive (HDD) Troubleshooting 2-19 Procedure 1 Partition Check 2-19 Procedure 2 Message Check 2-20 Procedure 3 Format Check 2-20 Procedure 4 Diagnostic Test Program Execution Check ... Check 2-24 2.9 Display Troubleshooting 2-25 Procedure 1 Diagnostic Test Program Execution Check 2-25 Procedure 2 Connector Check 2-25 Procedure 3 Replacement Check 2-25 Libretto 50CT/70CT Maintenance Manual 2-iii
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Figures Figure 2-1 Troubleshooting flowchart (1/2 2-3 Figure 2-2 Printer port LED 2-12 Figure 2-3 Cable connection diagram 2-16 Tables Table 2-1 Battery icon ...2-5 Table 2-2 DC IN icon...2-5 Table 2-3 Printer port LED boot mode status (1/2 2-13 Table 2-4 Printer port LED Hibernation mode error status 2-15 Table 2-5 FDD error codes and statuses 2-17 Table 2-6 Hard disk drive error codes and statuses 2-22 2-iv Libretto 50CT/70CT Maintenance Manual
Figures Figure 2-1 Troubleshooting flowchart (1/2 2-3 Figure 2-2 Printer port LED 2-12 Figure 2-3 Cable connection diagram 2-16 Tables Table 2-1 Battery icon ...2-5 Table 2-2 DC IN icon...2-5 Table 2-3 Printer port LED boot mode status (1/2 2-13 Table 2-4 Printer port LED Hibernation mode error status 2-15 Table 2-5 FDD error codes and statuses 2-17 Table 2-6 Hard disk drive error codes and statuses 2-22 2-iv Libretto 50CT/70CT Maintenance Manual
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... 10. PC card wraparound card 11. FDD Libretto 50CT/70CT Maintenance Manual 2-1 The FRUs covered are: • Power Supply • System Board • FL Inverter Board • Floppy Disk Drive • Hard Disk Drive • Keyboard • Pointing Device • Display The Tests and Diagnostics are described in Chapter 4. Toshiba MS-DOS system disk(s) (You must...
... 10. PC card wraparound card 11. FDD Libretto 50CT/70CT Maintenance Manual 2-1 The FRUs covered are: • Power Supply • System Board • FL Inverter Board • Floppy Disk Drive • Hard Disk Drive • Keyboard • Pointing Device • Display The Tests and Diagnostics are described in Chapter 4. Toshiba MS-DOS system disk(s) (You must...
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NonToshiba operating systems can cause the computer to execute. q Make sure the floppy disk drive is installed on the hard disk. Before going through the flowchart steps, do the following: q Verify with the customer that Toshiba Windows 95 is empty. 2-2 Libretto 50CT/70CT Maintenance Manual q Make sure all optional equipment is removed from the computer. 2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart Use the flowchart in figure 2-1 as a guide to determine which troubleshooting procedures to malfunction.
NonToshiba operating systems can cause the computer to execute. q Make sure the floppy disk drive is installed on the hard disk. Before going through the flowchart steps, do the following: q Verify with the customer that Toshiba Windows 95 is empty. 2-2 Libretto 50CT/70CT Maintenance Manual q Make sure all optional equipment is removed from the computer. 2.2 Troubleshooting Flowchart 2 Troubleshooting Procedures 2.2 Troubleshooting Flowchart Use the flowchart in figure 2-1 as a guide to determine which troubleshooting procedures to malfunction.
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... in Section 2.5. 3. If an error is detected on the display test, do the System Board troubleshooting procedures in Section 2.9. 2-4 Libretto 50CT/70CT Maintenance Manual If an error is detected on the system test, memory test, display test, ASYNC test, printer test, expansion test,... sound test, or real timer test do the Display troubleshooting procedures in Section 2.4. 2. If an error is detected on the keyboard test, do the Hard Disk Drive...
... in Section 2.5. 3. If an error is detected on the display test, do the System Board troubleshooting procedures in Section 2.9. 2-4 Libretto 50CT/70CT Maintenance Manual If an error is detected on the system test, memory test, display test, ASYNC test, printer test, expansion test,... sound test, or real timer test do the Display troubleshooting procedures in Section 2.4. 2. If an error is detected on the keyboard test, do the Hard Disk Drive...
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The contents of the hard disk to set the active partition for drive C. Procedure 1 Partition Check Insert the Toshiba MS-DOS system disk, turn the computer on drive C. Choose Display Partition Information from the FDD and cold-boot the computer. If drive C is listed, go to Check 3. ... Message Check Procedure 3: Format Check Procedure 4: Diagnostic Test Program Execution Check NOTES: 1. Otherwise, the HDD is operating normally. 2-20 Libretto 50CT/70CT Maintenance Manual If not, return to the FDISK menu and choose the option to see if the Microsoft Create System Disks Tools (MSCSD....
The contents of the hard disk to set the active partition for drive C. Procedure 1 Partition Check Insert the Toshiba MS-DOS system disk, turn the computer on drive C. Choose Display Partition Information from the FDD and cold-boot the computer. If drive C is listed, go to Check 3. ... Message Check Procedure 3: Format Check Procedure 4: Diagnostic Test Program Execution Check NOTES: 1. Otherwise, the HDD is operating normally. 2-20 Libretto 50CT/70CT Maintenance Manual If not, return to the FDISK menu and choose the option to see if the Microsoft Create System Disks Tools (MSCSD....
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... with a new one following the steps in drive Press any key Check 3 Use the Toshiba MS-DOS system disk to the HDD. If not, go to check 5. Check 1 Format the hard disk using FORMAT C:/S/U to transfer the system program to install a system program on the display. Libretto 50CT/70CT Maintenance Manual 2-21 Check 5 The HDD...
... with a new one following the steps in drive Press any key Check 3 Use the Toshiba MS-DOS system disk to the HDD. If not, go to check 5. Check 1 Format the hard disk using FORMAT C:/S/U to transfer the system program to install a system program on the display. Libretto 50CT/70CT Maintenance Manual 2-21 Check 5 The HDD...
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Procedure 4 Diagnostic Test Program Execution Check The HDD test program is operating properly. 2-22 Libretto 50CT/70CT Maintenance Manual do Check 1. Partition and format the HDD using the FDISK command. Refer to Chapter 3, Tests and Diagnostics for more... displays, the HDD low level format is detected during the HDD test, an error code and status will display; 2.6 Hard Disk Drive (HDD) Troubleshooting 2 Troubleshooting Procedures Check 2 Use the Toshiba MS-DOS system disk to Procedure 4. Check 3 Using the Diagnostic Disk, format the HDD with a low level format option...
Procedure 4 Diagnostic Test Program Execution Check The HDD test program is operating properly. 2-22 Libretto 50CT/70CT Maintenance Manual do Check 1. Partition and format the HDD using the FDISK command. Refer to Chapter 3, Tests and Diagnostics for more... displays, the HDD low level format is detected during the HDD test, an error code and status will display; 2.6 Hard Disk Drive (HDD) Troubleshooting 2 Troubleshooting Procedures Check 2 Use the Toshiba MS-DOS system disk to Procedure 4. Check 3 Using the Diagnostic Disk, format the HDD with a low level format option...
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Libretto 50CT/70CT Maintenance Manual 2-23 2 Troubleshooting Procedures 2.6 Hard Disk Drive (HDD) Troubleshooting Table 2-6 Hard disk drive error codes and statuses Code 01h 02h 03h 04h 06h 08h 09h 10h 20h 40h 60h 80h EEh FFh Status Bad command Bad address mark ...Write Protected Record not found HDC not reset DMA overrun error DMA boundary error CRC error FDC error Seek error FD not in drive Time...
Libretto 50CT/70CT Maintenance Manual 2-23 2 Troubleshooting Procedures 2.6 Hard Disk Drive (HDD) Troubleshooting Table 2-6 Hard disk drive error codes and statuses Code 01h 02h 03h 04h 06h 08h 09h 10h 20h 40h 60h 80h EEh FFh Status Bad command Bad address mark ...Write Protected Record not found HDC not reset DMA overrun error DMA boundary error CRC error FDC error Seek error FD not in drive Time...
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......3-7 3.4 System Test...3-9 3.5 Memory Test...3-10 3.6 Keyboard Test ...3-12 3.7 Display Test ...3-14 3.8 Floppy Disk Test ...3-17 3.9 Printer Test...3-20 3.10 Async Test...3-22 3.11 Hard Disk Test ...3-24 3.12 Real Timer Test ...3-27 3.13 NDP Test ...3-29 3.14 Expansion Test ...3-30 3.15 Sound Test ...3-31 3.16 Error Codes and Error...42 3.20.1 Function Description 3-42 3.20.2 Operations 3-42 3.21 Running Test ...3-44 3.21.1 Function Description 3-44 3.21.2 Operations 3-44 3.22 Floppy Disk Drive Utilities 3-45 3.22.1 Function Description 3-45 Libretto 50CT/70CT Maintenance Manual 3-iii
......3-7 3.4 System Test...3-9 3.5 Memory Test...3-10 3.6 Keyboard Test ...3-12 3.7 Display Test ...3-14 3.8 Floppy Disk Test ...3-17 3.9 Printer Test...3-20 3.10 Async Test...3-22 3.11 Hard Disk Test ...3-24 3.12 Real Timer Test ...3-27 3.13 NDP Test ...3-29 3.14 Expansion Test ...3-30 3.15 Sound Test ...3-31 3.16 Error Codes and Error...42 3.20.1 Function Description 3-42 3.20.2 Operations 3-42 3.21 Running Test ...3-44 3.21.1 Function Description 3-44 3.21.2 Operations 3-44 3.22 Floppy Disk Drive Utilities 3-45 3.22.1 Function Description 3-45 Libretto 50CT/70CT Maintenance Manual 3-iii
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... Menu displays: TOSHIBA personal computer xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp. 19XX DIAGNOSTIC TEST MENU : 1 - DISPLAY TEST 5 - PRINTER TEST 7 - Function 88 sets the floppy disk drive and hard disk drive error retry count.... MEMORY TEST 3 - NDP TEST 11 - ERROR RETRY COUNT SET [HDD & FDD] 99 - ASYNC TEST 8 - To execute the Diagnostic Test Menu from the Diagnostics Menu, set the highlight bar to Sections 3.4 through 3.15 for detailed descriptions of the Diagnostic Test and returns to the Diagnostics Menu. 3-4 Libretto 50CT/70CT...
... Menu displays: TOSHIBA personal computer xxx DIAGNOSTICS version X.XX (c) copyright TOSHIBA Corp. 19XX DIAGNOSTIC TEST MENU : 1 - DISPLAY TEST 5 - PRINTER TEST 7 - Function 88 sets the floppy disk drive and hard disk drive error retry count.... MEMORY TEST 3 - NDP TEST 11 - ERROR RETRY COUNT SET [HDD & FDD] 99 - ASYNC TEST 8 - To execute the Diagnostic Test Menu from the Diagnostics Menu, set the highlight bar to Sections 3.4 through 3.15 for detailed descriptions of the Diagnostic Test and returns to the Diagnostics Menu. 3-4 Libretto 50CT/70CT...
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... subtest you want to select whether or not the HDD status is displayed on the screen. Test drive number #1 #2 #1 2. Select yes or no . This message is executed. The Hard Disk Test message will be tested. Before running the test, transfer the contents of the displayed questions...or 10 is used only once.) If it exists, use the Backup utility in Section 3.18. Answer each subtest. 3-24 Libretto 50CT/70CT Maintenance Manual Select the hard disk drive number to back up the preinstalled software, then use it to execute the test. This message is detected. HDC F/W error...
... subtest you want to select whether or not the HDD status is displayed on the screen. Test drive number #1 #2 #1 2. Select yes or no . This message is executed. The Hard Disk Test message will be tested. Before running the test, transfer the contents of the displayed questions...or 10 is used only once.) If it exists, use the Backup utility in Section 3.18. Answer each subtest. 3-24 Libretto 50CT/70CT Maintenance Manual Select the hard disk drive number to back up the preinstalled software, then use it to execute the test. This message is detected. HDC F/W error...
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...; DWF error is corrected 1 IDX "0" - The previous command was terminated with some error Libretto 50CT/70CT Maintenance Manual 3-35 Table 3-3 Hard disk controller status register contents Bit Name Description 7 BSY "0" - HDC is not ready to accept any command (Drive ready) "1" - Hard disk drive is ready (Busy) "1" - Index is busy 6 DRDY "0" - HDC is sensed 0 ERR "0" - Write fault...
...; DWF error is corrected 1 IDX "0" - The previous command was terminated with some error Libretto 50CT/70CT Maintenance Manual 3-35 Table 3-3 Hard disk controller status register contents Bit Name Description 7 BSY "0" - HDC is not ready to accept any command (Drive ready) "1" - Hard disk drive is ready (Busy) "1" - Index is busy 6 DRDY "0" - HDC is sensed 0 ERR "0" - Write fault...
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Not used 3-36 Libretto 50CT/70CT Maintenance Manual The hard disk could not find track 0 during a recalibrate command (Track 0) "1" - Not used 2 ABRT (Abort) "0" - Not used "1" - Illegal command error or a drive status error occurs 1 TK00 "0" - A bad block mark is no ID field in the requested sector 3 -- 3.17 Hard Disk Test Detail Status 3 Tests and Diagnostics Table 3-4 Error...
Not used 3-36 Libretto 50CT/70CT Maintenance Manual The hard disk could not find track 0 during a recalibrate command (Track 0) "1" - Not used 2 ABRT (Abort) "0" - Not used "1" - Illegal command error or a drive status error occurs 1 TK00 "0" - A bad block mark is no ID field in the requested sector 3 -- 3.17 Hard Disk Test Detail Status 3 Tests and Diagnostics Table 3-4 Error...
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.... 3.18.2 Operations NOTE: After the HDD has been formatted, execute the Toshiba MS-DOS FDISK command, to display the following messages: DIAGNOSTICS - Next, execute the Toshiba MS-DOS FORMAT command. Refer to the Toshiba MS-DOS manual for bad tracks by reading data to all the tracks on...cylinder and track as a bad track. Go to select All track FORMAT, which lets you format the entire disk. [All track FORMAT] Drive : #1 = HDD #2 = Non Cylinder : XXXX Head : XX Sector : XX > 3-38 Libretto 50CT/70CT Maintenance Manual 3.18 Hard Disk Format 3 Tests and Diagnostics Recording method 2.
.... 3.18.2 Operations NOTE: After the HDD has been formatted, execute the Toshiba MS-DOS FDISK command, to display the following messages: DIAGNOSTICS - Next, execute the Toshiba MS-DOS FORMAT command. Refer to the Toshiba MS-DOS manual for bad tracks by reading data to all the tracks on...cylinder and track as a bad track. Go to select All track FORMAT, which lets you format the entire disk. [All track FORMAT] Drive : #1 = HDD #2 = Non Cylinder : XXXX Head : XX Sector : XX > 3-38 Libretto 50CT/70CT Maintenance Manual 3.18 Hard Disk Format 3 Tests and Diagnostics Recording method 2.
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...)] key ? Note that track is the same as executing All Track Format described in succession: Drive number select (1:#1,2:#2) ? (a) Select a drive number and press Enter. Libretto 50CT/70CT Maintenance Manual 3-39 Enter the cylinder and head number in the format above or those identified as... (d) All track format All tracks are no bad tracks, pressing Enter alone is automatically formatted as a bad track. 3 Tests and Diagnostics 3.18 Hard Disk Format The following message displays: Interleave number (1/1 ~ 8) ? (b) Select an interleave number, 1 ~ 8 and press Enter. Enter the ...
...)] key ? Note that track is the same as executing All Track Format described in succession: Drive number select (1:#1,2:#2) ? (a) Select a drive number and press Enter. Libretto 50CT/70CT Maintenance Manual 3-39 Enter the cylinder and head number in the format above or those identified as... (d) All track format All tracks are no bad tracks, pressing Enter alone is automatically formatted as a bad track. 3 Tests and Diagnostics 3.18 Hard Disk Format The following message displays: Interleave number (1/1 ~ 8) ? (b) Select an interleave number, 1 ~ 8 and press Enter. Enter the ...
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... prompt shown below . [[cylinder, head = 0123 03]] Press Enter to return to the Hard Disk Format menu. 4. To format a track as a good track, enter the number for drive, interleave, cylinder, and head as indicated in case of bad tracks. Interleave number (1 /... 1 - 8) ? Press [Cylinder number (dddd)] ? Bad tracks will display in the screen prompt shown below . Drive number select (1:#1, 2:#2) ? Press Enter to return to the Hard Disk Format menu. 3-40 Libretto 50CT/70CT...
... prompt shown below . [[cylinder, head = 0123 03]] Press Enter to return to the Hard Disk Format menu. 4. To format a track as a good track, enter the number for drive, interleave, cylinder, and head as indicated in case of bad tracks. Interleave number (1 /... 1 - 8) ? Press [Cylinder number (dddd)] ? Bad tracks will display in the screen prompt shown below . Drive number select (1:#1, 2:#2) ? Press Enter to return to the Hard Disk Format menu. 3-40 Libretto 50CT/70CT...