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Lenovo NetVista Hardware Maintenance Manual (HMM) for Aptiva and NetVista 2255 - Page 119

Layout of the System Board for Machine Types 2255 and 2275

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Layout of the System Board for Machine Types 2255 and 2275 Jumpers and Connectors Locations on System Board for machine types 2255 and 2275 119

Section	Page
Hardware Maintenance Service for Service Level A	1
Contents	3
Notices	5
Voltage Supply Switch Settings	5
Safety Information	6
Laser Compliance Statement	30
Trademarks	31
Preface	32
General Information	33
Introduction	34
Product Overview	35
Hardware Interfaces	38
Flash (BIOS) Update Procedure	40
BIOS-contained Model Number and Serial Number	41
BIOS Setup Utility	42
Working with the Setup Menus	42
Start Options	45
Advanced Setup	47
Power Management Setup	47
Set Administrator Password	48
Set Password	48
Specifications	49
Operating Requirements	50
Special Tools	51
Check Procedures	53
Introduction	54
Start	55
Index of Symptoms, Messages, Error Codes, or Beeps	60
Troubleshooting	70
Factory-Installed Storage Devices	71
Factory-Installed Modem Card	73
Audio (Not Supported by Diagnostics Program)	75
CD-ROM Drive	76
Memory	78
Keyboard	78
Mouse	79
Power Supply	81
Monitor	83
Undetermined Problems	84
Diagnostic Aids	85
Introduction	86
Power-On Self Test	87
Diagnostics Tools	88
Using Diagnostics Program from Recovery CD	88
Diagnostics Program Features	89
Repair Information	91
Removals and Replacements of machine type 2275	92
Identifying the Parts of the System Unit	93
Top Cover	95
Adapter Cards	96
Diskette Drive	98
CD-ROM Drive	99
Hard Disk Drive	100
System Board	101
Power Supply	102
Removals and Replacements of machine type 2255	104
Identifying the Parts of the System Unit	105
Top Cover	107
Adapter Cards	108
Diskette Drive	110
CD-ROM Drive	111
Hard Disk Drive	112
System Board	113
Power Supply	115
Memory (DIMM)	116
Parts/Test Point Locations	117
Introduction	118
Layout of the System Board for Machine Types 2255 and 2275	119
Jumper Settings of the System Board of the Machine Types 2255 and 2275	120
Connectors and Functions for the System Board of Machine Types 2255 and 2275	121
Power Supply Cable Connector Specifications	122
Main Output Pin Assignment	123
Factory-Installed Modem Card Layout	125
Factory-Installed Modem Card Connector Functions	125
3.5-In. Hard Disk Drive Jumper Locations & Settings	126
CD-ROM Drive	127
CD-ROM Drive Rear Panel Connectors and Features	128
CD-ROM Drive Jumper Settings	128
DIMM Configurations	129
System Board Connector Pin Signals	130
Monitor Port Signals	130
Serial Port Signals	130
Parallel Port Signals	130
Mouse Port Signals	131
Keyboard Port Signals	131
Diskette Drive Cable Connector Signals	132
IDE Cable Connector Signals	133
Safety Inspection Guide	135
General Guidelines	136
Parts Catalog	139
Parts Catalog of machine type 2275	140
Assembly 2: Diskette Drive, Hard Disk Drive	142
Assembly 3: CD-ROM, Modem Card	143
Assembly 4: Keyboard and Mouse	145
Parts Catalog of machine type 2255	146
Assembly 1: System Unit	146
Assembly 2: Diskette Drive, Hard Disk Drive	148
Assembly 3: CD-ROM, Modem Card	149
Assembly 4: Keyboard and Mouse	150
Appendix A. Online Support Information	151