Diagnostic error codes . . . . . . . . . . .
52
Beep symptoms . . . . . . . . . . . . . .
69
POST error codes . . . . . . . . . . . . .
70
Miscellaneous error messages . . . . . . . .
71
Undetermined problems . . . . . . . . . . .
73
Chapter 10. Replacing FRUs (Type
4105, 4157, 4217) . . . . . . . . . . .
75
Locating controls and connectors on the front of
your computer . . . . . . . . . . . . . . .
75
Rear connectors . . . . . . . . . . . . . .
75
Removing the cover
. . . . . . . . . . . .
76
Locations. . . . . . . . . . . . . . . . .
77
Locating parts on the system board . . . . . .
79
Removing the front bezel
. . . . . . . . . .
80
Replacing the power supply . . . . . . . . .
80
Replacing a memory module . . . . . . . . .
82
Replacing a PCI adapter card . . . . . . . . .
84
Replacing the heat sink . . . . . . . . . . .
88
Replacing the microprocessor
. . . . . . . .
90
Replacing the system board . . . . . . . . .
92
Replacing a hard disk drive. . . . . . . . . .
95
Replacing the hard disk drive fan assembly . . .
98
Replacing an optical drive . . . . . . . . . .
99
Replacing the diskette drive or card reader
. . .
100
Replacing the front and rear fan assemblies . . .
102
Replacing the front panel connectors assembly . .
103
Replacing the power switch/LED assembly . . .
104
Replacing the battery . . . . . . . . . . . .
104
Replacing the internal speaker . . . . . . . .
105
Completing the FRU replacement . . . . . . .
106
Chapter 11. Replacing FRUs (Type
4155, 4158, 4218) . . . . . . . . . .
107
Locating controls and connectors on the front of
your computer . . . . . . . . . . . . . . .
107
Rear connectors . . . . . . . . . . . . . .
107
Removing the cover
. . . . . . . . . . . .
108
Locations. . . . . . . . . . . . . . . . .
109
Locating parts on the system board . . . . . .
111
Removing the front bezel
. . . . . . . . . .
112
Replacing the power supply . . . . . . . . .
112
Installing or replacing a memory module
. . . .
114
Replacing a PCI adapter card . . . . . . . . .
116
Replacing the heat sink . . . . . . . . . . .
119
Replacing the microprocessor
. . . . . . . .
120
Replacing the system board . . . . . . . . .
122
Replacing a hard disk drive. . . . . . . . . .
125
Replacing the hard disk drive fan assembly . . .
128
Replacing an optical drive . . . . . . . . . .
129
Replacing the diskette drive or card reader
. . .
130
Replacing the front and rear fan assemblies . . .
131
Replacing the front panel connectors assembly . .
132
Replacing the power switch/LED assembly . . .
133
Replacing the battery . . . . . . . . . . . .
134
Replacing the internal speaker . . . . . . . .
135
Completing the FRU replacement . . . . . . .
136
Chapter 12. FRU lists . . . . . . . .
137
Machine Type 4105 . . . . . . . . . . . . .
137
Machine Type 4155 . . . . . . . . . . . . .
157
Machine Type 4157 . . . . . . . . . . . . .
174
Machine Type 4158 . . . . . . . . . . . . .
204
Machine Type 4217 . . . . . . . . . . . . .
228
Machine Type 4218 . . . . . . . . . . . . .
243
Chapter 13. Additional Service
Information . . . . . . . . . . . . .
259
Security features . . . . . . . . . . . . . .
259
Hardware controlled Passwords . . . . . .
259
Operating system password
. . . . . . .
259
Vital product data. . . . . . . . . . . .
259
BIOS levels . . . . . . . . . . . . . . . .
259
Flash update procedures
. . . . . . . . . .
259
Updating (flashing) BIOS from a disc . . . .
260
Updating (flashing) BIOS from the operating
system . . . . . . . . . . . . . . . . . .
260
Recovering from a POST/BIOS update failure . .
260
Power management
. . . . . . . . . . . .
261
Automatic configuration and power interface
(ACPI) BIOS . . . . . . . . . . . . . .
261
Automatic Power-On features . . . . . . .
261
Appendix A. Notices . . . . . . . .
263
Television output notice . . . . . . . . . . .
264
Trademarks . . . . . . . . . . . . . . . .
264
Appendix B. System memory
speed . . . . . . . . . . . . . . . .
265
Index. . . . . . . . . . . . . . . . .
267
vi
ThinkStation Hardware Maintenance Manual
Summary of Contents for 4157 - ThinkStation S20 - 2 GB RAM
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