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Popular Toshiba 50CT Manual Pages
User Guide - Page 1
... of Centronics Data Computer Corporation. Libretto 50CT/70CT Maintenance Manual
i Under the copyright laws, this manual cannot be reproduced in this material. Lotus is a registered trademark of their respective holders. Centronics is a registered trademark of X/Open Company Ltd. All rights reserved. Toshiba Libretto 50CT/70CT Maintenance Manual
Third edition February 1998
Disclaimer
The...
User Guide - Page 2
... only the same model battery or an equivalent battery recommended by an asterisk (*). Installation of messages are used in this manual are strictly adhered to safe maintenance services. SAFETY PRECAUTIONS
Four types of the wrong battery can cause the battery to perform hardware service maintenance for the Toshiba Personal Computer Libretto 50CT/70CT. q If you replace the battery pack, RTC...
User Guide - Page 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 Maintenance Manual
User Guide - Page 14
...cursor/page control;
Libretto 50CT/70CT Maintenance Manual
1-1
A video controller and 1MB of VRAM enable an external monitor to 16M colors at a resolution of 120MHz.
q Batteries
Two batteries: a Lithium-Ion main battery pack and RTC battery that enables a display of up the Real Time Clock and CMOS memory. q Expansion
An optional 8 or 16MB memory kit can be installed in Microsoft...
User Guide - Page 39
...Procedure 2. Check 2 If the DC IN icon does not light, go to Procedure 3. q Start
Off for 2 seconds
q Error code (8 bit)
"1"
On for one second
"0"
On for half second
Interval between data bits Off for the Libretto 50CT/70CT. 2.3 Power Supply Troubleshooting
2 Troubleshooting Procedures
To check the power supply status, install a battery pack and connect an AC adapter.
Procedure...
User Guide - Page 40
... limit
33h
B3V does not start up when the power supply is turned on
q Power supply microcontroller
Error code Meaning
50h
Firmware or program error
q CPU environmental condition
Error code Meaning
80h
CPU temperature is outside the allowable range
88h
CPU overheat
(The CPU heat sensor has detected overheating and has automatically shut down)
Libretto 50CT/70CT Maintenance Manual
2-7
User Guide - Page 45
... test status by turning lights on . 3. 2.4 System Board Troubleshooting
2 Troubleshooting Procedures
(17) PIC #2 ERROR (18) KB ERROR (19) HDC ERROR (20) HDD #0 ERR2OR (21) HDD #1 ERROR (22) NO FDD ERROR (23) FDC ERROR (24) TIMER INTERRUPT ERROR (25) RTC UPDATE ERROR
Procedure 2 Printer Port LED Check in Table 2-3, do Check 1.
2-12
Libretto 50CT/70CT Maintenance Manual Plug the printer port...
User Guide - Page 46
... Board Troubleshooting
NOTE: If an error condition is detected by the IRT test, the printer port LED displays an error code after the IRT test ends.
VRAM ERROR SYSTEM MEMORY ERROR SYSTEM MEMORY PARITY ERROR EXTENDED MEMORY ERROR EXTENDED MEMORY PARITY ERROR DMA PAGE REGISTER ERROR DMAC #X ERROR
Libretto 50CT/70CT Maintenance Manual
2-13
MEMORY REFRESH ERROR TIMER CH.2 OUT ERROR CMOS...
User Guide - Page 53
... operating normally.
2-20
Libretto 50CT/70CT Maintenance Manual
Recheck the system. If not, return to the FDISK menu and choose the option to the operating system instructions.
Choose Display Partition Information from the FDD and cold-boot the computer. Refer to set the active partition for drive C. Transfer the contents of the hard disk will be used...
User Guide - Page 63
... 3.20 Log Utilities...3-42 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
User Guide - Page 65
... and Exiting the SETUP Window 3-52 3.24.5 The Factory Preset Configuration 3-52 3.24.6 SETUP Options 3-53
Tables
Table 3-1 Subtest names (1/2 3-7 Table 3-2 Error codes and error status names (1/3 3-32 Table 3-3 Hard disk controller status register contents 3-35 Table 3-4 Error register contents 3-36 Table 3-5 Hard disk formatting sequence 3-37
Libretto 50CT/70CT Maintenance Manual
3-v
User Guide - Page 69
MEMORY TEST 3 - NDP TEST 11 - EXPANSION TEST 12 - ERROR RETRY COUNT SET [HDD & FDD] 99 - 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 Maintenance Manual SYSTEM TEST 2 - EXIT TO DIAGNOSTICS MENU
Refer...
User Guide - Page 97
... Not Found Write Protected Record Not Found Media Removed DMA Overrun Error DMA Boundary Error CRC Error FDC Error Seek Error FDD Not In Drive Error Time Out Error Write Buffer Error Time Out Fault Select Line Out of Paper Power Off Busy Line DSR On Time Out CTS On Time Out RX-READY Time Out
3-32
Libretto 50CT/70CT Maintenance Manual
User Guide - Page 98
... 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
Libretto 50CT/70CT Maintenance Manual
3-33
Memory Installation Guide - Page 1
...
12.
Replace the battery back into position. WARRANTY & DISCLAIMERS:
All Viking Components products have just removed the retaining strip. Then lift the keyboard panel by installing the following Viking Components memory options into their estimated life has expired. Then replace the keyboard retaining strip.
10. Viking Memory
INSTALLATION GUIDE TOSHIBA®
Libretto 50CT & 70CT...
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