IBM ThinkPad 380XD Owner's manual

S10L-9623-00
IBM Mobile Systems
ThinkPad 380XD (2635)
ThinkPad 385XD (2635)
Hardware Maintenance Manual
May 1998

S10L-9623-00
IBM Mobile Systems
ThinkPad 380XD (2635)
ThinkPad 385XD (2635)
Hardware Maintenance Manual
May 1998
IBM

Note
Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 123.
First Edition (May 1998)
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 1998. 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 380XD, 385XD (2635) 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 5 and “Safety
Information” on page 12.
iii

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
iv IBM ThinkPad 380XD, 385XD

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
v

vi IBM ThinkPad 380XD, 385XD

IBM ThinkPad 380XD, 385XD (2635)
Introduction . . . . . . . . . . . . . . . . . . . . 3
How to Use Error Messages .......... 4
How to Read POST Error Messages ...... 4
Safety Notices (Multi-lingual Translations) ..... 5
Safety Information . . . . . . . . . . . . . . . . 12
General Safety . . . . . . . . . . . . . . . . 12
Electrical Safety . . . . . . . . . . . . . . . . 13
Safety Inspection Guide ............ 14
Handling Electrostatic Discharge-Sensitive Devices 16
Grounding Requirements . . . . . . . . . . . . 16
Laser Compliance Statement ........... 17
Read This First .................. 19
Product Overview . . . . . . . . . . . . . . . . . 23
Checkout Guide . . . . . . . . . . . . . . . . . 25
Audio Checkout . . . . . . . . . . . . . . . . 26
Diskette Drive Checkout ............ 26
Fan Checkout . . . . . . . . . . . . . . . . . 27
Keyboard or Auxiliary Input Device Checkout . . 27
Memory Checkout . . . . . . . . . . . . . . . 28
Power Systems Checkout ........... 29
Status Indicator Checkout ........... 32
System Board and CPU Card Checkout ..... 32
TrackPoint III Checkout ............ 32
Optional Device Checkout ............. 33
Port Replicator Checkout ............ 33
External Monitor Self-Test ........... 34
Power Management Features ........... 35
Symptom-to-FRU Index . . . . . . . . . . . . . . 38
Numeric Error Codes .............. 38
Beep Symptoms . . . . . . . . . . . . . . . . 43
Function-Related Symptoms . . . . . . . . . . 44
Indicator-Related Symptoms . . . . . . . . . . 44
Infrared-Related Symptoms . . . . . . . . . . . 45
Keyboard- or TrackPoint III-Related Symptoms . 45
LCD-Related Symptoms . . . . . . . . . . . . 46
Peripheral-Device-Related Symptoms . . . . . . 46
Power-Related Symptoms . . . . . . . . . . . 47
Other Symptoms . . . . . . . . . . . . . . . . 47
Intermittent Problems . . . . . . . . . . . . . 47
Undetermined Problems . . . . . . . . . . . . 48
Running the Diagnostics .............. 49
PC Card (PCMCIA) Slots Test ......... 50
Universal Serial Bus (USB) Test ........ 50
Displaying the Error Log ............ 50
Checking the Installed Devices List ....... 50
Diagnostic Error Codes ............ 52
Related Service Procedures ............ 55
Status Indicators . . . . . . . . . . . . . . . . 55
Password Combinations . . . . . . . . . . . . 56
Running a Low-Level Format .......... 57
Maintenance Diskette Download ........ 57
 Copyright IBM Corp. 1998 1

Fn Key Combinations ............. 57
FRU Removals and Replacements ......... 58
Important Notice . . . . . . . . . . . . . . . . 59
FRU Service Procedure ............ 60
Removal Reference . . . . . . . . . . . . . . 61
1010 DIMM Card and Backup Battery ..... 62
1020 Battery Pack . . . . . . . . . . . . . . 63
1030 Hard Disk Drive ............. 64
1040 Keyboard Unit . . . . . . . . . . . . . . 66
1050 Keyboard and Speaker .......... 69
1060 CD-ROM Drive and Diskette Drive Assembly 71
1070 Diskette Drive and CD-ROM Drive .... 72
1080 LCD Unit . . . . . . . . . . . . . . . . 76
1090 Fan Assembly, CPU Card, Thermal Rubber 79
1100 Upper Shield Case ........... 82
1110 Box Speaker and Microphone ...... 83
1120 DC/DC Card . . . . . . . . . . . . . . 85
1130 System Board and PC Card Slot ..... 87
1140 Battery Pack Latch ........... 90
2010 LCD Front Cover ............ 91
2020 LCD Panel . . . . . . . . . . . . . . . 93
2030 LCD Inverter Card ............ 97
2040 LCD Misc. Parts ............. 99
2050 LCD Cable . . . . . . . . . . . . . . 103
Locations . . . . . . . . . . . . . . . . . . . . 104
Front View . . . . . . . . . . . . . . . . . 104
Bottom View . . . . . . . . . . . . . . . . . 105
Rear View . . . . . . . . . . . . . . . . . . 106
Parts Listing . . . . . . . . . . . . . . . . . . 107
System Unit . . . . . . . . . . . . . . . . . 108
Hard Disk Drive, CD-ROM, Diskette Drive . . . 110
LCDFRU . . . . . . . . . . . . . . . . . . 111
Option Parts List ............... 118
Notices . . . . . . . . . . . . . . . . . . . . . 123
Trademarks . . . . . . . . . . . . . . . . . 123
2IBM ThinkPad 380XD, 385XD