
Contents
Chapter 1. About this manual .....1
Important Safety Information .........1
Important information about replacing RoHS
compliant FRUs .............2
Turkish statement of compliance........3
Chapter 2. Safety information .....5
General safety ..............5
Electrical safety .............5
Safety inspection guide ...........7
Handling electrostatic discharge-sensitive devices ..8
Grounding requirements ..........8
Safety notices (multi-lingual translations) .....9
Chapter 3. General information ....39
Additional information resources .......39
Specifications ..............40
Chapter 4. General Checkout .....41
Problem determination tips .........41
Chapter 5. Diagnostics ........43
Lenovo System Toolbox ..........43
PC-Doctor for DOS ............43
Creating adiagnostic CD/DVD image ....44
Running diagnostics from the disc......44
Navigating through the diagnostics programs ...44
Running tests..............44
Test results .............45
Fixed disk advanced test (FDAT) ......45
Quick and Full erase -hard drive ......47
Viewing the test log ...........47
Chapter 6. Using the Setup Utility ...49
Starting the Setup Utility program.......49
Viewing and changing settings ........49
Using passwords ............49
Password considerations .........50
Power-On Password ..........50
Administrator Password .........50
Setting, changing, and deleting apassword...50
Selecting astartup device..........51
Selecting atemporary startup device .....51
Changing the startup device sequence ....51
Exiting from the Setup Utility program .....51
Chapter 7. Symptom-to-FRU Index ...53
Hard disk drive boot error .........53
Power Supply Problems ..........53
Diagnostic error codes ...........54
POST error codes ............75
Miscellaneous error messages ........77
Undetermined problems ..........78
Chapter 8. Replacing FRUs (Type 7848) 81
Locating the connectors on the rear of your
computer ...............82
Locating the connectors on the front of your
computer ...............83
Locations ...............84
Identifying parts on the system board .....85
Removing the computer cover ........86
Removing and replacing the front bezel .....88
Installing or replacing amemory module ....89
Replacing aPCI adapter card ........92
Replacing the CMOS battery.........94
Replacing the power supply .........95
Replacing the heat sink and fan assembly ....97
Replacing the microprocessor ........99
Replacing the system board ........ 102
Replacing ahard disk drive ........ 104
Replacing an optical drive ......... 105
Replacing the Media Card Reader ...... 105
Replacing the power switch or LED assembly .. 107
Completing the FRU replacement ...... 107
Chapter 9. FRU lists ........ 109
Machine Type 7848 ........... 109
Chapter 10. Additional Service
Information ............ 111
Security features ............ 111
Hardware controlled Passwords ...... 111
Operating system password ....... 111
BIOS levels .............. 111
Flash update procedures.......... 111
Updating (flashing) BIOS from adiskette or disc 111
Updating (flashing) BIOS from the operating
system...............112
Power management ...........113
Automatic configuration and power interface
(ACPI) BIOS.............113
Automatic Power-On features .......113
Recovering software ...........114
Appendix. Notices .........115
Television output notice ..........116
Trademarks ..............116
©Lenovo 2005, 2008. Portions ©IBM Corp. 2005. iii