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Toshiba 70CT Videos
Portable Retro Gaming Computer, Toshiba Libretto 70CT full tour & teardown.
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Popular Toshiba 70CT Manual Pages
User Guide - Page 1
...laws, this material. Toshiba Corporation and Toshiba America Information Systems, Inc., assume no liability for damages incurred directly or indirectly from errors, omissions, or ...Open Company Ltd. Centronics is a registered trademark of IBM Corporation.
Toshiba Libretto 50CT/70CT Maintenance Manual
Third edition February 1998
Disclaimer
The information contained in any form without ...
User Guide - Page 2
... the computer may result in property damage if the safety instruction is not observed.
Improper repair of a hazard that could result in safety hazards. q Be sure to perform hardware service maintenance for the Toshiba Personal Computer Libretto 50CT/70CT. Information on the Libretto 70CT has been incorporated into this manual to bring important information to your attention. Each of...
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
...page control; 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 1.58GB.
or 102-key enhanced keyboard. 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.
A video controller...
User Guide - Page 18
...-processor and 16 KB cache memory.
∗Libretto 70CT: Intel 120 MHz Pentium processor with MMX technology operates at 2.9/3.3 volts and incorporates the math co-processor and 16 KB cache memory.
q Video RAM
• 1 MB, two 256K x 16-bit DRAM chips • 3.3 volt operation • Access time 50 ns
Libretto 50CT/70CT Maintenance Manual
1-5 1 Hardware Overview
1.2 System Unit...
User Guide - Page 22
...inch HDD
1.4 2.5-inch HDD
The removable HDD is shown in Figure 1-5.
The Libretto 50CT computer supports a 815MB HDD.
∗The Libretto 70CT computer supports a 1.58GB HDD. Figure 1-5 2.5-inch HDD
Libretto 50CT/70CT Maintenance Manual
1-9
The 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.
User Guide - Page 39
... the DC IN icon blink pattern into the hexadecimal error code and compare it to Procedure 4. The blink pattern indicates an error as shown below . Check 3 If the Battery icon does not light orange or green, go to the tables below . CAUTION: Use only an AC adapter that is over the limit (16.5 V)
2-6
Libretto 50CT/70CT Maintenance Manual
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
...on . 3. Read the LED status from binary to Procedure 3. 6. 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
User Guide - Page 46
... ERROR CMOS BAD BATTERY ERROR
- -
- - - -
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 2 Troubleshooting Procedures
2.4 System Board Troubleshooting
NOTE: If an error condition is detected by the IRT test, the printer port LED displays an error code...
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 97
... Mark 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
... module with respect to customer products produced to original purchaser specifications except as provided herein, there are 100% guaranteed compatible with 16MB memory soldered.
Manual No. 1005205 • Release 12/97, Rev.
No warranty is now complete. Viking Memory
INSTALLATION GUIDE TOSHIBA®
Libretto 50CT & 70CT
6.
Locate the keyboard retaining strip at its right edge and...
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