IBM ThinkPad 2644 Owner's manual

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S37L-5191-00
IBM Mobile Systems
ThinkPad 570 (2644)
ThinkPad 570 UltraBase
Hardware Maintenance Manual
February 1999
IBM

Note
Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 103.
First Edition (February 1999)
The following paragraph does not apply to the United
Kingdom or any country where such provisions are
inconsistent with local law:
INTERNATIONAL BUSINESS MACHINES
CORPORATION PROVIDES THIS PUBLICATION “AS IS”
WITHOUT ANY WARRANTY OF ANY KIND, EITHER
EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED
TO, THE LIMITED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. Some states do not allow disclaimer or
express or implied warranties in certain transactions;
therefore, this statement may not apply to you.
This publication could include technical inaccuracies or
typographical errors. Changes are periodically made to
the information herein; these changes will be incorporated
in new editions of the publication. IBM may make
improvements or changes to the products or the programs
described in this publication at any time.
It is possible that this publication may contain references
to, or information about, IBM products (machines and
programs), programming, or services that are not
announced in your country. Such references or
information must not be construed to mean that IBM
intends to announce such IBM products, programming, or
services in your country.
Requests for technical information about IBM products
should be made to your IBM authorized dealer or your IBM
marketing representative.
 Copyright International Business Machines
Corporation 1999. All rights reserved. Note to U.S.
Government Users – Documentation related to restricted
rights – Use, duplication, or disclosure is subject to
restrictions set forth in GSA ADP Schedule Contract with
IBM Corp.

About This Manual
This manual contains service and reference information for
IBM ThinkPad 570Z (2644) and ThinkPad Ultrabase
products. Use this manual along with the advanced
diagnostic tests to troubleshoot problems effectively.
The manual is divided into sections as follows:
The Introduction section provides general information,
guidelines, and safety information required to service
computers.
The product-specific section includes service,
reference, and product-specific parts information.
Important
This manual is intended for trained servicers who are
familiar with ThinkPad products. Use this manual
along with the advanced diagnostic tests to
troubleshoot problems effectively.
Before servicing an IBM ThinkPad product, be sure to
review the safety information under “Safety Notices
(Multi-lingual Translations)” on page 6 and “Safety
Information” on page 13.

Related Publications
The following product publications are available through
IBM or your IBM Authorized Dealer.
Publication Part, Form Number
Mobile Systems HMM
Volume 1: Laptop,
Notebook, Portable, and
ThinkPad Computers
(Models L40, CL57, N45,
N51, P70/P75, ThinkPad
300, 350, 500, 510, 710T,
Expansion Unit, Dock I,
Dock II)
30H2356, S82G-1501-01
Mobile Systems HMM
Volume 2: ThinkPad
Computers
(Models 340, 355, 360, 370,
700, 701, 720, 750, 755)
30H2357, S82G-1502-03
Mobile Systems HMM
Volume 3: ThinkPad
Computers
(Models 365, 380, 385, 560,
760, SelectaDock)
84H8099, S82G-1503-05
Mobile Systems HMM
Volume 4: ThinkPad
Computers
(Models 380, 385, 560, 760,
765)
05L1271, S05L-1270-01

Related Diskettes
The following diskettes are available through IBM or your
IBM Authorized Dealer.
Diskette Part, Form Number
ThinkPad 300 (2615)
Advanced Diagnostics
Diskette
33G9361, S33G-9361
ThinkPad 350, 350C, 425,
425C (2618) Advanced
Diagnostics Diskette
A211000, GA21-1000
ThinkPad 365 (2625)
Advanced Diagnostics
Diskette
76H7578, S30H-2498
ThinkPad 380/385 (2635)
Maintenance Diskette 06J0333, S06J-0333
ThinkPad 500 (2603)
Advanced Diagnostics
Diskette
71G3702, S71G-3702
ThinkPad 510 (2604)
Advanced Diagnostics
Diskette
83G8095, S83G-8095
ThinkPad 700 (9552)
Reference Diskette 42G2017, S42G-2017
ThinkPad 700C (9552)
Reference Diskette 42G2023, S42G-2023
ThinkPad 720/720C (9552)
Reference Diskette 61G1194, S61G-1194
ThinkPad Hardware
Maintenance Diskette
(for all Models 355, 360,
560, 750, 755, 760)
78H5384, S78H-5384
ThinkPad Dock I (3545) 71G4140, S71G-4140
Docking Station (3550) 42G2428, S42G-2428
Data/Fax Modem 61G1556, S61G-1556
FaxConcentrator/A 84F8540, S84F-8540

Contents
General descriptions . . . . . . . . . . . . . . . 1
Introduction . . . . . . . . . . . . . . . . . . . 3
Important Service Information ........... 3
How to Use Error Messages .......... 4
How to Read POST Error Messages ...... 4
Drive and Diskette Compatibility Matrix ....... 5
Safety Notices (Multi-lingual Translations) ..... 6
Safety Information . . . . . . . . . . . . . . . . 13
General Safety . . . . . . . . . . . . . . . . 13
Electrical Safety . . . . . . . . . . . . . . . . 14
Safety Inspection Guide ............ 15
Handling Electrostatic Discharge-Sensitive Devices 17
Grounding Requirements . . . . . . . . . . . . 17
Laser compliance statement ............ 18
Read this first ................... 20
FRU replacement notices ............. 22
LCD replacement notice ............ 22
Screw notices . . . . . . . . . . . . . . . . . 22
System board replacement notice ........ 23
Related service information ............ 25
Reset switch . . . . . . . . . . . . . . . . . 25
Running a low-level format ........... 25
Service Web site ............... 25
Passwords . . . . . . . . . . . . . . . . . . 25
Power management features .......... 28
Fn key combinations .............. 32
Checkout guide . . . . . . . . . . . . . . . . . . 33
Testing the computer ............. 33
Related service information ........... 36
Power systems checkout ............ 37
ThinkPad 570 . . . . . . . . . . . . . . . . . . 41
Product overview . . . . . . . . . . . . . . . . . 42
Specifications . . . . . . . . . . . . . . . . . 42
Status indicators . . . . . . . . . . . . . . . . 43
Structure . . . . . . . . . . . . . . . . . . . 44
Symptom-to-FRU index . . . . . . . . . . . . . . 47
Numeric error codes .............. 47
Error messages . . . . . . . . . . . . . . . . 49
Beep symptoms . . . . . . . . . . . . . . . . 50
LCD-related symptoms . . . . . . . . . . . . . 50
Intermittent problems . . . . . . . . . . . . . . 51
Undetermined problems . . . . . . . . . . . . 51
FRU removals and replacements ......... 53
1010 Battery pack . . . . . . . . . . . . . . . 55
1020 Backup battery . . . . . . . . . . . . . 56
1030 DIMM . . . . . . . . . . . . . . . . . . 58
1040 Hard disk drive ............. 59
1050 Keyboard . . . . . . . . . . . . . . . . 61
1060 Center cover . . . . . . . . . . . . . . 63
 Copyright IBM Corp. 1999 vii

1070 Modem card . . . . . . . . . . . . . . . 64
1080 Frame and power switch ......... 65
1090 Audio card . . . . . . . . . . . . . . . 67
1100 Modem jack . . . . . . . . . . . . . . . 68
1110 Speaker . . . . . . . . . . . . . . . . . 69
1120 Audio cable . . . . . . . . . . . . . . . 70
1130 PC Card slots .............. 71
1140 HDD cable . . . . . . . . . . . . . . . 72
1150 Upper shield . . . . . . . . . . . . . . 73
1160 Fan . . . . . . . . . . . . . . . . . . . 74
1170 LCD unit . . . . . . . . . . . . . . . . 75
1180 System board assembly ......... 77
1190 I/O Connector cable or system board . . . 78
2010 LCD front bezel ............. 80
2020 Inverter card . . . . . . . . . . . . . . 82
2030 LCD panel . . . . . . . . . . . . . . . 83
2040 Hinges . . . . . . . . . . . . . . . . . 86
3010 Blank bezel in the UltraBase ....... 87
Battery pack in the UltraBase .......... 88
Locations . . . . . . . . . . . . . . . . . . . . . 89
Front View . . . . . . . . . . . . . . . . . . 89
Rear View . . . . . . . . . . . . . . . . . . . 90
Bottom View . . . . . . . . . . . . . . . . . . 91
Password pads . . . . . . . . . . . . . . . . 92
Parts List (ThinkPad 570) ............. 93
LCDFRU . . . . . . . . . . . . . . . . . . . 96
Keyboard . . . . . . . . . . . . . . . . . . . 98
Common Parts List ............. 100
Notices . . . . . . . . . . . . . . . . . . . . . 103
Trademarks . . . . . . . . . . . . . . . . . 103
viii ThinkPad 570 Hardware Maintenance Manual

INTRODUCTION
General descriptions
This chapter includes descriptions for any ThinkPad model
that has the PC-Doctor DOS diagnostics program. Some
descriptions might not apply to your particular computer.
 Copyright IBM Corp. 1999 1