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7-44 Chapter 7, Removal and Replacement Procedures
Addendum 108431-001 (11-88) to
Manual No. 108033-003
4. Remove the ten mounting screws that
secure the system board to the chassis.
5. Carefully remove the system board from
the chassis (Figure 7-46).
Figure 7-46. Removing the System Board.
To replace the system board, follow these steps:
1. Reverse Steps 1 through 5. Be sure to tight-
en the mounting screws because they
provide proper grounding for the system.
NOTE: When you reconnect the power
cables, refer to the configuration
label on the drive housing assembly
for the location of the connectors.
2. Run the SETUP program.
- COMPAQ DESKPRO 386 1
- Personal Computer 1
- MAINTENANCE AND 1
- SERVICE GUIDE 1
- Compaq Computer Corporation 3
- SUMMARY OF TEXT 7
- REQUIRED TOOLS AND SUPPLIES 9
- ADDITIONAL INFORMATION 10
- CONTENTS 11
- Chapter 6 13
- ILLUSTRATED PARTS CATALOG 13
- Chapter 7 13
- Chapter 8 14
- Chapter 9 15
- MASS STORAGE CONFIGURATIONS 15
- Appendix A 15
- INDEX A-1 15
- Chapter 1 27
- OPERATING AND 27
- PERFORMANCE 27
- SPECIFICATIONS 27
- Performance Specifications 28
- 1.3 COMPAQ ENHANCED 29
- KEYBOARD 29
- 1.4 84-KEY KEYBOARD 29
- 1.5 COMPAQ DUAL-MODE MONITOR 30
- 1.6 COMPAQ COLOR MONITOR 31
- FOR THE EXPANSION UNIT 45
- Chapter 2 49
- POWER-ON SELF-TEST 49
- (POST)/PROBLEM ISOLATION 49
- 2.3 PRELIMINARY STEPS TO 50
- PROBLEM ISOLATION 50
- 2.4 PROBLEM ISOLATION 50
- FLOWCHART 50
- (Post)/Problem Isolation 52
- Chapter 3 59
- SETUP PROGRAM 59
- 3.2 HOW TO RUN SETUP 60
- Chapter 4 65
- ADVANCED DIAGNOSTICS 65
- 4.2 MAIN MENU 66
- Format a Diskette 67
- Run the SETUP Program 67
- SETUP Program 67
- Display ROM Versions 67
- 4.3 ADVANCED DIAGNOSTICS 68
- 4.4 TEST SELECTION MENU 69
- Keyboard 70
- Parallel Interface 70
- Video Controller 72
- Display Characteristics 72
- Character Set 72
- 80 x 25 Display 72
- 40 x 25 Display 73
- 320 x 200 Standard Graphics 74
- 640 x 200 Standard Graphics 74
- Lightpen 75
- Display Memory Pages 75
- Gray Scale/Color 76
- 640 x 200 Color Graphics 77
- 640 x 350 Color Graphics 78
- Monochrome Text 79
- 640 x 350 Monochrome Graphics 79
- 640 x 480 Graphics 80
- 256 Color Mode 80
- Diskette Drive 81
- Monochrome Video Board 82
- Asynchronous Communications 82
- Interface 82
- Modem Internal Loopback 83
- Auto Originate Mode 83
- Auto Answer Mode 83
- Modem External Termination 83
- Fixed Disk Drive 84
- Head Select 85
- Run All the Above Tests 85
- Read Verify 85
- Format Menu 85
- Surface Analysis 87
- Change Interleave 87
- Display Current Interleave 87
- (for diagnostic use only) 88
- Enhanced Color Graphics 89
- Video Graphics Controller 89
- 5.3 ADVANCED DIAGNOSTICS 96
- ERROR CODES 96
- Manual No. 108033-003 100
- 5.4 MEMORY ERROR CODES 123
- 127
- 5.5 EXTDISK MESSAGES 128
- Table 5-5. EXTDISK Messages 129
- ILLUSTRATED PARTS 133
- 6.2 SPARE PARTS LIST, U.S 134
- 6.4 PARTS LIST 142
- [ page missing ] 149
- 6.5 300-/600-MEGABYTE FIXED 153
- DISK DRIVE EXPANSION UNIT 153
- PARTS LIST 153
- REMOVAL AND 159
- REPLACEMENT 159
- PROCEDURES 159
- (Installed) 161
- 5. Set the monitor aside 162
- 7.3 KEYBOARD 163
- 7.4 POWER FUSE 164
- 7.5 PREPARING THE 166
- SYSTEM UNIT FOR THE 166
- INTERNAL REMOVAL AND 166
- REPLACEMENT PROCEDURES 166
- 7.6 SYSTEM UNIT COVER AND 167
- INTERNAL CONFIGURATION 167
- 7.7 POWER SUPPLY 170
- 7.8 BATTERY 173
- 7.9 SECURITY LOCK 176
- 7.10 EXPANSION BOARD(S) 177
- Board Signal Cables 180
- 7.11 80287 COPROCESSOR 181
- 7.12 MEMORY EXPANSION 182
- BOARD(S) 182
- 7.13 MEMORY CHIP(S) 184
- 7.14 SPEAKER ASSEMBLY AND 187
- SECURITY LOCK SWITCH 187
- (see Figure 7-32) 189
- 7.15 MASS STORAGE DEVICE(S) 191
- Removal and Replacement 192
- IMPORTANT 196
- 7.16 SYSTEM BOARD 197
- 7.17 INTEL 387 COPROCESSOR 203
- 7.18 LOST KEY 207
- 7.19 300-/600-MEGABYTE FIXED 208
- Fixed Disk Drive Unit 209
- Terminating Resistor 211
- Power Supply 212
- JUMPER SETTINGS AND 217
- SWITCH SETTINGS 217
- 8.2. SYSTEM BOARDS 218
- 000413) 223
- EXPANSION BOARDS 226
- Bank 3 Enabled 227
- Bank 3 Disabled 227
- (assy. no. WD1005WAH) 229
- (assy. no. WD1002WAH) 235
- 8.9 HOST ADAPTER BOARD 236
- Configuration Switch Bank SW1 240
- Configuration Switch Bank SW2 242
- Configuration Switch Bank SW3 243
- Enhanced Color Graphics Board 243
- 8.11 VIDEO DISPLAY 244
- CONTROLLER BOARDS 244
- (assy. no. 000160) 245
- (assy. no. 000345) 245
- (assy. no. 000525) 246
- PRINTER BOARD 248
- 8.14 300-/600-MEGABYTE 252
- FIXED DISK DRIVE 252
- EXPANSION UNIT 252
- MASS STORAGE 257
- CONFIGURATION 257
- 9.2 SYSTEM CONFIGURATION 258
- Mirroring 260
- Duplexing 261
- 9.3 SETTING UP THE 262
- EXTERNAL FIXED DISK 262
- DRIVE EXPANSION UNIT 262
- Format Command 263
- Novell Netware Configuration 263
- ABEND: Not enough memory 267
- A-2 Appendix A, Index 270
- A-4 Appendix A, Index 272
- A-6 Appendix A, Index 274
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