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019 (continued)
DO YOU HAVE A 486SX (30-PIN MEMORY SIMM) SYSTEM BOARD
INSTALLED, AND DOES IT HAVE SOCKETED VIDEO RAM INSTALLED?
Yes No
020
Go to Step 025.
021
You may have a failing video RAM chip.
– Power off the system unit.
– Remove one of the video RAM chips. Use the Video Memory Removal
Tool to remove the chip. Observe electrostatic discharge (ESD) precau-
tions.
– Power on the system unit.
DID THE SYMPTOM REMAIN?
Yes No
022
Replace the failing video RAM chip.
023
– Power off the system unit.
– Perform the same procedure for any remaining video RAM chips.
DID THE SYMPTOM REMAIN?
Yes No
024
Replace the failing video RAM chip.
025
(From step 020)
(Step 025 continues)
Diagnostic Information
2-25
Summary of Contents for PS/1
Page 1: ...M achine Types 2133 2155 and 2168...
Page 2: ......
Page 3: ...M achine Types 2133 2155 and 2168...
Page 8: ...Index X 1 vi...
Page 14: ...xii...
Page 38: ...1 24...
Page 40: ...Notes 2 2...
Page 67: ...Notes Diagnostic Information 2 29...
Page 95: ...Notes Diagnostic Information 2 57...
Page 112: ...MAP 1100 continued 003 continued Replace the system board 2 74...
Page 116: ...MAP 1200 continued 009 Replace the serial port adapter card 2 78...
Page 134: ...Notes 2 96...
Page 170: ...3 12...
Page 175: ...1005 Cover Cover release Latch Repair Information 4 5...
Page 185: ...1045 Riser Card Adapter Card 1035 Left DASD Support Bracket 1010 Repair Information 4 15...
Page 200: ...Figure 4 20 Pull Out on the Cover 4 30...
Page 250: ...5 32...
Page 252: ...6 2...
Page 255: ...Catalog Section Parts Catalog 7 3...
Page 256: ...Assembly 1 Machine Types 2133 and 2155 System Unit Exterior 3 1 2 7 4...
Page 258: ...Assembly 2 Machine Types 2133 and 2155 System Unit Interior 1 2 3 4 5 6 7 8 11 12 12 10 7 6...
Page 261: ...12 93F0041 1 Packet Mounting Screws Parts Catalog 7 9...
Page 262: ...Assembly 3 Machine Type 2168 System Unit Exterior 2 1 7 10...
Page 267: ...Parts Catalog 7 15...
Page 268: ...Assembly 5 Diskette and Hard Disk Drives All Machine Types 1 2 3 4 4 4 4 4 7 16...
Page 273: ...Parts Catalog 7 21...
Page 274: ...Assembly 7 Keyboard and Mouse All Machine Types 1 2 7 22...
Page 284: ...Part Asm Number Index Page 93F2397 2 1 7 7 93F2398 2 1 7 7 93F2399 2 1 7 7 8 4...
Page 290: ...This page left blank intentionally A 6...
Page 296: ...This page left blank intentionally A 12...
Page 298: ...This page left blank intentionally A 14...
Page 304: ...IBM Part Number 63G2028 IBM United Kingdom PO Box 41 North Harbour Portsmouth PO6 3AU England...