ThinkPad R50/R50p, R51 Series and Dock II Hardware Maintenance Manual
ThinkPad Computer
Hardware Maintenance Manual
July 2005
This manual supports:
ThinkPad R50/R50p, R51 series (MT 1829, 1830, 1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888, 2889, 2894, 2895)
ThinkPad Dock II (MT 2877)
Note
Before using this information and the product it supports, be sure to read the general information under “Notices” on page 224.
First Edition (July 2005)
© Copyright Lenovo 2005.
Portions © Copyright International Business Machines Corporation 2005.
All rights reserved.
U.S. GOVERNMENT USERS – RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software–Restricted Rights at FAR 52.227-19, when applicable, or under Rights in Data-General, FAR 52.227.14 (Alternate III).
Contents
About this manual 1
Introduction 3
Important service information 3
Strategy for replacing FRUs 3
How to use error messages 4
Diskette compatibility matrix 4
Safety notices: multilingual translations 4
Safety information 16
General safety 16
Electrical safety 17
Safety inspection guide 19
Handling devices that are sensitive to electrostatic discharge 20
Grounding requirements 21
Laser compliance statement 22
General descriptions 25
Read this first 25
What to do first 25
Related service information 27
Service Web site 27
Restoring the pre-installed system 27
Passwords 28
Power management 32
Checkout guide 34
Testing the computer 34
Detecting system information with PC-Doctor 37
Power system checkout 37
ThinkPad R50/R50p and R51 Series 41
Product overview 43
Specifications 43
Status indicators 48
FRU tests 50
Fn key combinations 52
Symptom-to-FRU index 54
Numeric error codes 54
Error messages 58
Beep symptoms 59
No-beep symptoms 59
LCD-related symptoms 60
Intermittent problems 61
Undetermined problems 61
FRU replacement notices 62
Screw notices 62
Retaining serial numbers 63
Removing and replacing a FRU 66
1010 Battery pack 67
1020 Ultrabay Enhanced device 68
1030 Hard disk drive . 69
1040 DIMM (optional) . 71
1050 Keyboard . 72
1060 DIMM (standard) . 76
1070 Modem daughter card (MDC/MDC-2) . 77
1080 Bluetooth/Modem daughter card (BMDC/BMDC-2) . 79
1090 Keyboard bezel . 81
1100 Mini PCI adapter . 85
1110 Fan assembly . 89
1120 CPU . 90
1130 Backup battery . 91
1140 Speaker assembly . 92
1150 IEEE 1394 cable . 94
1160 PC Card slots assembly . 97
1170 Ultraday Enhanced shield kit . 98
1180 LCD assembly . 105
1190 VGA and Ultraday Enhanced device eject button cable . 109
1200 System board, interposer card, and base cover . 112
2010 LCD front bezel . 119
2020 Inverter card . 121
2030 LCD panel, LCD cable assembly, wireless LAN antenna assembly, hinges, and LCD cover . 122
3010 ThinkPad Dock II PCI cover . 132
3020 ThinkPad Dock II top cover . 133
Locations . 136
Front view . 136
Rear view . 138
Bottom view . 139
Parts list . 140
Overall . 140
LCD FRUs . 188
AC adapters . 206
Keyboard . 207
Recovery CDs . 209
Miscellaneous parts . 217
Optional FRUs . 221
Common parts list . 222
Notices . 224
Trademarks . 226
About this manual
This manual contains service and reference information for ThinkPad® R50/R50p and R51 series (MT1829, 1830, 1831, 1832, 1833, 1836, 1840, 1841, 2883, 2887, 2888, 2889, 2894, 2895), and ThinkPad Dock II (MT2877) products. Use this manual along with the advanced diagnostic tests to troubleshoot problems.
The manual is divided into sections as follows:
- The common sections provide general information, guidelines, and safety information required in servicing computers.
The product-specific section includes service, reference, and product-specific parts information.
Important
This manual is intended for trained service personnel who are familiar with ThinkPad products. Use this manual along with the advanced diagnostic tests to troubleshoot problems effectively.
Before servicing a ThinkPad product, be sure to review the safety information under “Safety notices: multilingual translations” on page 4, “Safety information” on page 16, and “Laser compliance statement” on page 22.
Introduction
Important service information
| Important | |
| BIOS and device driver fixes are | |
| customer-installable. The BIOS and device drivers are posted on the customer support site http://www.lenovo.com/think/ support | |
| Advise customers to contact the Customer Support Center at 800-426-7378 if they need assistance in obtaining or installing any diskette fixes. | |
| Customers in Canada should call the Customer Support Center at 800-565-3344 for assistance or download information. |
Strategy for replacing FRUs
Before replacing parts
Make sure that all diskette fixes are installed before replacing any FRUs listed in this manual.
Use the following strategy to prevent unnecessary expense for replacing and servicing FRUs:
• If you are instructed to replace a FRU but the replacement does not correct the problem, reinstall the original FRU before you continue.
• Some computers have both a processor board and a system board. If you are instructed to replace either the processor board or the system board, and replacing one of them does not correct the problem, reinstall that board, and then replace the other one.
- If an adapter or a device consists of more than one FRU, any of the FRUs may be the cause of the error. Before replacing the adapter or device, remove the FRUs, one by one, to see if the symptoms change. Replace only the FRU that changed the symptoms.
Attention: The setup configuration on the computer you
