Toshiba A105 S4064 Maintenance Manual - Page 48

2.2

Basic Flowchart

2

Troubleshooting

Satellite A100/A105 / TECRA A7

Maintenance Manual

2-5

If the diagnostic program cannot detect an error, the error may be intermittent.

Run the

continuous test program repeatedly to isolate the problem.

Check the log utilities function to

confirm which diagnostic test detected the error, then perform the appropriate

troubleshooting procedures as follows:

1.

If an error is detected by the System test, Memory test, Async test, Printer test,

Sound test, or Real Timer test, follow the system board troubleshooting procedures in

Section 2.4.

2.

If an error is detected by the Hard Disk test, follow the HDD troubleshooting

procedures in Section 2.5.

3.

If an error is detected by the Keyboard test, follow the keyboard troubleshooting


4.

If an error is detected by the Display test, follow the display troubleshooting


5.

If an error is detected by the ODD test, follow the ODD troubleshooting procedures in

Section 2.8.

6.

If an error is detected by the LAN test, follow the LAN troubleshooting procedures in

section 2.9.

7.

If an error is detected by the SD Card test, follow the SD Card troubleshooting

procedures in section 2.10

8.

If an error is detected by the Finger Print test, follow the Speaker troubleshooting

procedures in section 2.11.

9.

If an error is detected by the 3D sensor test, follow the Speaker troubleshooting


10.

If an error is detected by the Parallel test, follow the Speaker troubleshooting


11.

If an error is detected by the Speaker test, follow the Speaker troubleshooting


12.

If an error is detected by the IEEE 1394 test, follow the IEEE 1394 troubleshooting


13.

If an error is detected by the Fan On/Off test, follow the cooling module

troubleshooting procedures in Section 2.16.

Section	Page
Toshiba Personal Computer Satellite A100/A105 TECRA A7 (PSAA8/PSAA9) (PTA70/PTA71) (PSAAx) Maintenance Manual	1
Table of Contents	7
Chapter 1 Hardware Overview	15
1.1 Features	19
1.2 System Unit Components	27
1.3 2.5-inch HDD	33
1.4 DVD-ROM Drive	34
1.5 CD-RW/DVD-ROM Drive	35
1.6 DVD Super Multi (+-R Double Layer)	36
1.7 Power Supply	37
1.8 Batteries	38
Chapter 2 Troubleshooting	40
2.1 Outline	44
2.2 Basic Flowchart	45
2.3 Power Supply	49
2.4 System Board	52
2.5 2.5-inch HDD	55
2.6 Keyboard	60
2.7 Display	61
2.8 ODD (Optical Disk Drive)	63
2.9 LAN	65
2.10 SD/MS/MS pro/MMC/XD Card(Optional)	66
2.11 Finger Print(Optional)	67
2.12 3D Sensor	68
2.13 Parallel Port(Optional)	69
2.14 Audio Test	70
2.15 IEEE 1394 Test	71
2.16 Cooling Module	72
Chapter 3 Diagnostic Programs	73
3.1 General	77
3.2 Quick Start	79
3.3 Options	99
3.4 Subtests	109
3.5 System Test	112
3.6 Memory Test	116
3.7 Storage	122
3.8 Video	126
3.9 Communication (COMM)	135
3.10 Peripheral	137
3.11 Error Codes and description	139
3.12 Quick Test Item List	145
Chapter 4 Replacement Procedures	146
4.1 General	153
4.2 HDD	175
4.3 Speaker Cover and Keyboard	178
4.4 Bluetooth Card	180
4.5 Wireless LAN Card	182
4.6 ODD Bay Module	184
4.7 Display Assembly	187
4.8 Top Cover	189
4.9 CPU Cooling Module and Fan	192
4.10 VGA Board (for VGA Board Model)	197
4.11 CPU	199
4.12 USB Board, Finger Print Board and Print Board	202
4.13 System Board, MIC cable, AC-IN cable	204
4.14 Display Mask	206
4.15 FL Inverter Board	208
4.16 LCD Modules	210
4.17 Speakers	213
4.18 Switch Cover and Switch Board	214
4.19 Touch Pad and Button Board	218
Appendices	222
Appendix A Handling the LCD Module	230
Appendix B Board Layout	235
Appendix C Pin Assignments	239
Appendix D Keyboard Scan/Character Codes	269
Appendix E Key Layout	277
Appendix F BIOS Rewrite Procedures	291
Appendix G EC/KBC Rewrite Procedures	292

Toshiba A105 S4064 Maintenance Manual - Page 48

procedures in If an error is detected by the 3D sensor test

Page 48 highlights