Locating parts on the system board .
.
.
.
.
. 98
Removing the front bezel .
.
.
.
.
.
.
.
.
. 99
Replacing the power supply
.
.
.
.
.
.
.
. 100
Replacing a memory module .
.
.
.
.
.
.
. 102
Replacing a PCI adapter card .
.
.
.
.
.
.
. 104
Replacing the heat sink .
.
.
.
.
.
.
.
.
. 109
Replacing the microprocessor .
.
.
.
.
.
.
. 111
Replacing the system board
.
.
.
.
.
.
.
. 114
Replacing a hard disk drive
.
.
.
.
.
.
.
. 117
Replacing the hard disk drive fan assembly .
.
. 121
Replacing an optical drive .
.
.
.
.
.
.
.
. 123
Replacing the diskette drive or card reader
.
.
. 124
Replacing the front and rear fan assemblies .
.
. 126
Replacing the front panel connectors assembly .
. 127
Replacing the power switch/LED assembly .
.
. 128
Replacing the battery .
.
.
.
.
.
.
.
.
.
. 129
Replacing the internal speaker.
.
.
.
.
.
.
. 130
Completing the FRU replacement
.
.
.
.
.
. 131
Chapter 11. Replacing FRUs (Type
4155, 4158, 4218) . . . . . . . . . . 133
Locating controls and connectors on the front of
your computer .
.
.
.
.
.
.
.
.
.
.
.
. 133
Rear connectors
.
.
.
.
.
.
.
.
.
.
.
. 134
Removing the cover .
.
.
.
.
.
.
.
.
.
. 135
Locations .
.
.
.
.
.
.
.
.
.
.
.
.
.
. 136
Locating parts on the system board .
.
.
.
.
. 137
Removing the front bezel .
.
.
.
.
.
.
.
. 137
Replacing the power supply
.
.
.
.
.
.
.
. 138
Installing or replacing a memory module .
.
.
. 141
Replacing a PCI adapter card .
.
.
.
.
.
.
. 144
Replacing the heat sink .
.
.
.
.
.
.
.
.
. 147
Replacing the microprocessor .
.
.
.
.
.
.
. 149
Replacing the system board
.
.
.
.
.
.
.
. 151
Replacing a hard disk drive
.
.
.
.
.
.
.
. 154
Replacing the hard disk drive fan assembly .
.
. 157
Replacing an optical drive .
.
.
.
.
.
.
.
. 159
Replacing the diskette drive or card reader
.
.
. 160
Replacing the front and rear fan assemblies .
.
. 162
Replacing the front panel connectors assembly .
. 163
Replacing the power switch/LED assembly .
.
. 164
Replacing the battery .
.
.
.
.
.
.
.
.
.
. 165
Replacing the internal speaker.
.
.
.
.
.
.
. 166
Completing the FRU replacement
.
.
.
.
.
. 167
Chapter 12. FRU lists . . . . . . . . 169
Machine Type 4105
.
.
.
.
.
.
.
.
.
.
. 169
Machine Type 4155
.
.
.
.
.
.
.
.
.
.
. 185
Machine Type 4157
.
.
.
.
.
.
.
.
.
.
. 198
Machine Type 4158
.
.
.
.
.
.
.
.
.
.
. 214
Machine Type 4217
.
.
.
.
.
.
.
.
.
.
. 228
Machine Type 4218
.
.
.
.
.
.
.
.
.
.
. 240
Chapter 13. Additional Service
Information . . . . . . . . . . . . 251
Security features .
.
.
.
.
.
.
.
.
.
.
. 251
Hardware controlled Passwords .
.
.
.
.
. 251
Operating system password
.
.
.
.
.
.
. 251
Vital product data .
.
.
.
.
.
.
.
.
.
. 251
BIOS levels .
.
.
.
.
.
.
.
.
.
.
.
.
. 251
Flash update procedures.
.
.
.
.
.
.
.
.
. 251
Updating (flashing) BIOS from a diskette or
CD-ROM .
.
.
.
.
.
.
.
.
.
.
.
.
. 252
Updating (flashing) BIOS from the operating
system
.
.
.
.
.
.
.
.
.
.
.
.
.
.
. 252
Recovering from a POST/BIOS update failure
.
. 252
Power management .
.
.
.
.
.
.
.
.
.
. 254
Automatic configuration and power interface
(ACPI) BIOS.
.
.
.
.
.
.
.
.
.
.
.
. 254
Automatic Power-On features .
.
.
.
.
.
. 254
Appendix. Notices . . . . . . . . . 255
Television output notice .
.
.
.
.
.
.
.
.
. 256
Trademarks .
.
.
.
.
.
.
.
.
.
.
.
.
. 256
iv
Hardware Maintenance Manual
Summary of Contents for ThinkStation S20
Page 1: ......
Page 2: ......
Page 3: ...ThinkStation Hardware Maintenance Manual ...
Page 17: ...Chapter 2 Safety information 11 ...
Page 18: ...12 Hardware Maintenance Manual ...
Page 19: ... 18 kg 37 lbs 32 kg 70 5 lbs 55 kg 121 2 lbs 1 2 Chapter 2 Safety information 13 ...
Page 23: ...Chapter 2 Safety information 17 ...
Page 24: ...1 2 18 Hardware Maintenance Manual ...
Page 25: ...Chapter 2 Safety information 19 ...
Page 26: ...1 2 20 Hardware Maintenance Manual ...
Page 33: ...Chapter 2 Safety information 27 ...
Page 34: ...28 Hardware Maintenance Manual ...
Page 35: ...1 2 Chapter 2 Safety information 29 ...
Page 39: ...Chapter 2 Safety information 33 ...
Page 40: ...1 2 34 Hardware Maintenance Manual ...
Page 44: ...38 Hardware Maintenance Manual ...
Page 48: ...42 Hardware Maintenance Manual ...
Page 56: ...50 Hardware Maintenance Manual ...
Page 66: ...60 Hardware Maintenance Manual ...
Page 70: ...64 Hardware Maintenance Manual ...
Page 107: ...Chapter 10 Replacing FRUs Menorca Computers 101 ...
Page 112: ...106 Hardware Maintenance Manual ...
Page 114: ...108 Hardware Maintenance Manual ...
Page 118: ...112 Hardware Maintenance Manual ...
Page 152: ...146 Hardware Maintenance Manual ...
Page 174: ...168 Hardware Maintenance Manual ...
Page 256: ...250 Hardware Maintenance Manual ...
Page 263: ......
Page 264: ...Part Number 53Y4348 Printed in USA 1P P N 53Y4348 ...