Sharp 21H-S3P Specifications Page 257
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4.9 Switch membrane board 4 Replacement Procedures
Satellite A50S/TECRA A3X Maintenance Manual (960-534) [CONFIDENTIAL] 4-31
Installing the Switch membrane board
The following describes the procedure for installing the switch membrane board (See Figure
4-20).
1. Place the switch membrane board to the left side of the installation position and
slide it to the right to install. Then fix it with the following screw.
? M2.5x2.8B THIN BIND screwx1
2. Connect the switch membrane board cable to the connector CN3280 on the system
board.
- Toshiba Personal Computer 1
- Maintenance Manual 1
- Preface 3
- Format complete 5
- System transferred 5
- Table of Contents 6
- Hardware Overview 11
- Chapter 1 11
- 1 Hardware Overview 12
- Chapter 1 Contents 13
- 1 Hardware Overview 15
- 1.1 Features 17
- 1.2 System Block Diagram 22
- Item Specifications 26
- HDD2191VZK01 27
- 1.5 CD-ROM Drive 29
- 1.6 DVD-ROM Drive 31
- 1.8 DVD Super Multi drive 37
- 1.9 Keyboard 40
- 1.10 TFT Color Display 41
- 1.11 Power Supply 44
- 1.12 Batteries 46
- Condition Time 48
- 1.13 AC Adapter 49
- Chapter 2 51
- Troubleshooting Procedures 51
- 2 Troubleshooting Procedures 52
- Chapter 2 Contents 53
- 2.1 Troubleshooting 56
- ? Main Battery 64
- ? Second Battery 64
- ? S3V output (P60) 64
- ? E5V output (P61) 65
- ? E3V output (P62) 65
- ? 1R8-B1V output (P64) 65
- ? PPV output (P65) 66
- ? PTV output (P66) 66
- ? PTV output (P73) 66
- <System board> 91
- Keyboard 92
- 2.8 Display Troubleshooting 93
- <FL inverter> 94
- <LCD module> 94
- Touch pad 96
- 2.11 Modem Troubleshooting 98
- 2.12 LAN Troubleshooting 99
- 2.13 Sound Troubleshooting 100
- Chapter 3 104
- Tests and Diagnostics 104
- 3 Tests and Diagnostics 105
- Chapter 3 Contents 106
- 3.1 The Diagnostic Test 109
- 3.2.3 Heatrun test program 117
- 3.4 Heatrun Test 121
- 3.5 Subtest Names 122
- 3.6 System Test 124
- 3.7 Memory Test 126
- 3.8 Keyboard Test 127
- 3.9 Display Test 128
- 3.10 Floppy Disk Test 131
- 3.11 Printer Test 133
- 3.12 Async Test 135
- 3.13 Hard Disk Test 136
- HARD DISK TEST XXXXXXX 137
- 3.14 Real Timer Test 139
- Current date : 12-31-1999 141
- Current time : 23:59:58 141
- Current date : 01-01-2000 141
- Current time : 00:00:00 141
- 3.15 NDP Test 142
- 3.16 Expansion Test 143
- 3.17 CD-ROM/DVD-ROM Test 145
- 3.20 ONLY ONE TEST 151
- 3.21 Head Cleaning 157
- 3.22 Log Utilities 158
- 3.23 Running Test 160
- 1:FDD is 164
- Another dump (1:Yes,2:No) ? 165
- 3.25 System Configuration 166
- 3.25.2 Operations 167
- Error count = 00000 184
- [Modem loopback test !] 186
- Table 3-5 Error message 189
- Error code 190
- Error code 194
- 3.30 Sound Test program 197
- Press any key to continue… 198
- Manual (960-534) 199
- [Ctrl]+[Break] ; test end 200
- [Ctrl]+[C] ; key stop 200
- 3.31 SETUP 203
- 10. I/O Ports 204
- (a) Serial 204
- (b) Parallel 204
- Are you sure? (Y/N) 208
- Master+User is set in the 211
- Alarm Time = 00:00:00 215
- This cannot be changed 218
- PCI BUS = IRQ10, IRQ11 218
- = Left Ctrl + Left Alt 219
- KEYBOARD 219
- Chapter 4 221
- Replacement Procedures 221
- 4 Replacement Procedures 222
- Chapter 4 Contents 223
- 4.1 Overview 227
- 4.2 Battery Pack/PC Card 234
- Eject Button 236
- 4.3 Memory Module 237
- 4.4 MDC 240
- 4.5 HDD 242
- 4.6 Wireless LAN card 245
- 4.7 Cooling Fin/CPU 247
- M2x4B BIND 248
- CPU Holder 248
- Cooling Fin 249
- ( Opened) 249
- ( Closed) 249
- Triangle mark 250
- CPU Chip 251
- 4.8 Keyboard 252
- Keyboard Hold Plate 253
- M2.5x2.8B THIN BIND 253
- 4.9 Switch membrane board 256
- 4.10 Optical Drive 258
- 4.11 Display Assembly 260
- Display Assembly 262
- Base Assembly 262
- 4.12 Sound Board 264
- 4.14 Fan 272
- 4.16 PC card cover 276
- 4.17 Battery Latch 277
- 4.18 Battery Lock 279
- 4.19 Touch Pad 281
- 4.20 LCD Unit/FL Inverter 283
- 4.21 Latch Assembly 287
- [Samsung 288
- 4.23 Fluorescent Lamp 297
- PCB cover 298
- Panel assembly 301
- Mold frame 301
- Lamp wire 304
- Lamp assembly 305
- (H) Backlight unit 310
- (I) LCD panel 310
- Do not make any sheet over 318
- Top case 325
- Cover assembly bottom 328
- Source PCB 334
- Gate PCB 334
- Appendices 342
- Appendix Contents 344
- Appendix. A 350
- Appendix B Board Layout 356
- B.2 System Board Back View 358
- B.3 Sound Board (FLGSN*) 360
- B.6 S-Video Board (FLKCS*) 363
- Appendix C Pin Assignment 364
- SPOUT (L-) 386
- SPOUT (L+) 386
- SPOUT(R+) 387
- SPOUT (R-) 387
- Sound Board (FLGSN*) 389
- Switch Board (FLKSW*) 390
- Parallel Board (FLGCP*) 391
- S-Video Board (FLGCS*) 393
- 1 GND - 2 GND 394
- Serial Board (FLGSR*) 395
- Appendix. D 398
- Appendix E Key Layout 406
- Appendix F Wiring Diagrams 408
- Appendix H Reliability 412
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