Name: IBM 2254
Brand: IBM
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Power Supply

This system has a 155-watt switching power supply.

1. To remove the power supply. You must remove the top cover first.

2. Disconnect the power cable from the riser board and all drives.

3. Remove the screw in the machine rear that secures the power supply.

Table of Contents3
Notices5
Voltage Supply Switch Settings5
Safety Information6
Laser Compliance Statement24
Trademarks25
Preface26
General Information27
- Intoduction28
Product Overview29
Hardware Interfaces32
CMOS Reset33
Flash (BIOS/VPD) Update Procedure34
BIOS Setup Utility35
- Working with the Setup Menus35
- Starting the Setup Utility35
- Advanced Setup38
- Power Management Setup39
- ISA Legacy Resources39
- System Security39
Specifications41
Operating Requirements42
Special Tools43
Checkprocedures45
- Check Procedures45
Introduction46
Start47
Index of Symptoms, Messages, Error Codes, or Beeps50
Troubleshooting59
- Factory-Installed Storage Devices60
- Factory-Installed Modem Card61
- Audio (Not Supported by Diagnostics Program)62
- CD-ROM Drive63
- Memory64
- Keyboard64
- Mouse65
- Power Supply66
- Monitor68
- Undetermined Problems69
Diagnostic Aids71
Introduction72
Power-On Self Test73
Diagnostics Tools74
- Using Diagnostics Program from Recovery CD74
- Diagnostics Program Features75
Repair Information77
- Repairing Information77
Removals and Replacements of Machine Types 6270, 6276, 6279 and 628078
Identifying the Parts of the System Unit79
Top Cover81
- Adapter Cards82
- Diskette Drive83
- CD-ROM Drive84
Hard Disk Drive85
System Board86
- Power Supply87
Memory (DIMM)88
Removals and Replacements of Machine Types 6266 and 628689
Identifying the Parts of the System Unit90
Top Cover91
- Adapter Cards92
- Diskette Drive93
- CD-ROM Drive94
Hard Disk Drive95
System Board96
- Power Supply97
- Memory (DIMM)98
Parts/Test Point Locations99
Introduction100
Layout of System Board of Machine Types 6266, 6270, 6276, 6279101
- Connectors and Functions of System Board of Machine Types 6266, 6270, 6276, 6279102
Power Supply Cable Connector Specifications103
- Main Output Pin Assignment104
Factory-Installed Modem Card Layout106
- Factory-Installed Modem Card Connector Functions106
3.5-In. Hard Disk Drive Jumper Locations & Settings107
CD-ROM Drive108
- CD-ROM Drive Rear Panel Connectors and Features108
- CD-ROM Drive Jumper Settings109
DIMM Configurations110
System Board Connector Pin Signals111
- Monitor Port Signals111
- Serial Port Signals111
- Parallel Port Signals111
- Mouse Port Signals111
- Keyboard Port Signals112
- Diskette Drive Cable Connector Signals113
- IDE Cable Connector Signals114
Safety Inspection Guide115
General Guidelines116
Parts Catalog of Machine Type117
Parts Catalog of Machine Types 6270, 6276, 6279 and 6280118
- Assembly 1: System Unit118
- Assembly 2: Diskette Drive, Hard Disk Drive120
- Assembly 3: CD-ROM, Modem Card121
- Assembly 4: Keyboard and Mouse123
Parts Catalog of Machine Types 6266126
- Assembly 1: System Unit126
- Assembly 2: Diskette Drive, Hard Disk Drive128
- Assembly 3: CD-ROM, Modem Card129
- Assembly 4: Keyboard and Mouse130
Appendix A. Online Support Information132

Brand	IBM
Model	2254
Category	Desktop
Language	English

IBM 2254 Hardware

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