Lenovo ThinkPad 360 Owner's manual

This Manual Supports:
ThinkPad 340x (2610)
ThinkPad 355x (2619)
ThinkPad 360x (2620)
ThinkPad 370x (9545)
ThinkPad 700x (9552)
ThinkPad 701x (2630)
ThinkPad 720x (9552)
ThinkPad 750x (9545)
ThinkPad 755x (9545)
S82G-1502-03
IBM Mobile Systems
Hardware Maintenance Manual
Volume 2: ThinkPad Computers
April 1995
We Want Your Comments!
(Please see page 491)

S82G-1502-03
IBM Mobile Systems
Hardware Maintenance Manual
Volume 2: ThinkPad Computers
April 1995
We Want Your Comments!
(Please see page 491)
IBM

Note
Before using this information and the product it
supports, be sure to read the general information
under “Notices” on page 497.
Fourth Edition (April 1995)
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 WARRANTY OF ANY
KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT
NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR
PURPOSE. Some states do not allow disclaimer of
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 and/or changes in the product(s) and/or the
program(s) described in this publication at any time.
This publication was developed for products and services
offered in the United States of America. IBM may not offer
the products, services, or features discussed in this
document in other countries, and the information is subject
to change without notice. Consult your local IBM
representative for information on the products, services,
and features available in your area.
Requests for technical information about IBM products
should be made to your IBM reseller or IBM marketing
representative.
 Copyright International Business Machines
Corporation 1995. 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.
ii IBM Mobile Systems HMM

About This Manual
This manual contains service and reference information for
IBM* ThinkPad* computer 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 majority of the manual consists of
product-specific sections that include service,
reference, and product-specific parts information.
The Common Devices Checkout section provides
procedures for testing the devices that are commonly
attached to ThinkPad computers.
The Miscellaneous Information section contains
information about acronyms, abbreviations, terms,
and a telephone number listing.
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 mobile product, be sure to
review the safety information under “Safety Notices
(Multi-lingual Translations)” on page 7 and “Safety
Information” on page 14.
*Trademark of the IBM Corporation.
iii

Related Publications
The following mobile 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
30H2356, S82G-1501-01
ThinkPad 700 (9552) HMS 42G2016, S42G-2016
ThinkPad 700 (9552) HMR 42G2015, S42G-2015
ThinkPad 700C (9552) HMS 42G2022, S42G-2022
ThinkPad 700C (9552) HMR 42G2021, S42G-2021
ThinkPad 720/720C (9552)
HMS 61G1193, S61G-1193
ThinkPad 720/720C (9552)
HMR 61G1187, S61G-1187
ThinkPad 730T (2524) HMM 82G5497, S82G-5497
ThinkPad Exp. Crtg. (3550)
HMS 42G2338, S42G-2338
ThinkPad Exp. Crtg. (3550)
HMR 42G2339, S42G-2339
PS/2 FaxConcentrator* HMS 15F2262, S15F-2262
PS/2 FaxConcentrator HMR 84F8541, S84F-8541
PS/2 Comm. Cartridge I
HMS 10G5993, S10G-5993
PS/2 Comm. Cartridge I
HMR 10G5992, S10G-5992
IBM High Speed Internal,
PCMCIA Data/Fax Modems 61G1556, S61G-1556
iv IBM Mobile Systems HMM

Obsolete Publications
This manual obsoletes the following publication:
Related Diskettes
The following diskettes are available through IBM or your
IBM Authorized Dealer.
Publication Part, Form Number
Mobile Systems HMM
Volume 2: ThinkPad
Computers
82G1502, S82G1502
19H1080, S82G1502
Diskette Part, Form Number
ThinkPad 300 (2615)
Advanced Diagnostics 33G9361, S33G-9361
ThinkPad 350, 350C, 425,
425C (2618) Advanced
Diagnostics Diskette
A211000, GA21-1000
ThinkPad 500 (2603) Adv.
Diagnostics Diskette 71G3702, S71G-3702
ThinkPad 510 (2604)
Adv. 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 750Ce (9545)
Hardware Maintenance
(for all Models 355x, 360x,
750x, and 755x)
82G3891, S82G-3891
ThinkPad Dock I (3545) 71G4140, S71G-4140
Docking Station (3550) 42G2428, S42G-2428
Data/Fax Modem 61G1556, S61G-1556
FaxConcentrator/A 84F8540, S84F-8540
* Trademark of the IBM Corporation.
v

vi IBM Mobile Systems HMM

Contents
Introduction . . . . . . . . . . . . . . . . . . . 1
Portable Computer Descriptions .......... 2
Drive and Diskette Compatibility Matrix ....... 4
Important Service Information ........... 5
Safety Notices (Multi-lingual Translations) ..... 7
Safety Information . . . . . . . . . . . . . . . . 14
Laser Compliance Statement ........... 19
Screw Size Chart ................. 20
ThinkPad 340x (IBM 2610) ............ 23
General Checkout . . . . . . . . . . . . . . . . . 25
Symptom-to-FRU Index . . . . . . . . . . . . . . 34
Related Service Procedures ............ 43
Product Overview . . . . . . . . . . . . . . . . . 48
FRU Removals and Replacements ......... 49
Locations . . . . . . . . . . . . . . . . . . . . . 59
Parts Listing . . . . . . . . . . . . . . . . . . . 62
ThinkPad 700, 700C, 720, 720C (9552) ...... 67
General Checkout . . . . . . . . . . . . . . . . . 68
Symptom-to-FRU Index . . . . . . . . . . . . . . 82
Related Service Procedures ............ 94
Product Overview . . . . . . . . . . . . . . . . 102
FRU Removals and Replacements ........ 104
Locations . . . . . . . . . . . . . . . . . . . . 110
Parts Listing (700) ............... 115
Parts Listing (720, 720C) ............ 118
ThinkPad 701C/701CS (2630) .......... 125
Checkout Guide . . . . . . . . . . . . . . . . 127
Symptom-to-FRU Index . . . . . . . . . . . . . 141
Related Service Procedures ........... 154
Product Overview . . . . . . . . . . . . . . . . 159
FRU Removals and Replacements ........ 161
Locations . . . . . . . . . . . . . . . . . . . . 181
Parts Listing . . . . . . . . . . . . . . . . . . 190
ThinkPad 355x, 360x, 370C, 750x, 755C, 755Cs . 195
Read This First ................. 197
General Checkout . . . . . . . . . . . . . . . . 200
Symptom-to-FRU Index . . . . . . . . . . . . . 216
Related Service Procedures ........... 228
Product Overview . . . . . . . . . . . . . . . . 232
FRU Removals and Replacements ........ 236
Removals Models 355x, 360x .......... 237
Removals Models 370C, 750x, 755C, 755Cs . . . 261
Locations . . . . . . . . . . . . . . . . . . . . 289
Parts Listing . . . . . . . . . . . . . . . . . . 296
ThinkPad 755CD, 755CDV (9545) ........ 315
General Checkout . . . . . . . . . . . . . . . . 317
 Copyright IBM Corp. 1995 vii

Symptom-to-FRU Index . . . . . . . . . . . . . 331
Related Service Procedures ........... 344
Product Overview . . . . . . . . . . . . . . . . 349
FRU Removals and Replacements ........ 350
Locations . . . . . . . . . . . . . . . . . . . . 381
Parts Listing . . . . . . . . . . . . . . . . . . 383
ThinkPad 755CE, 755CSE, 755CV, 755CX (9545) 391
General Checkout . . . . . . . . . . . . . . . . 393
Symptom-to-FRU Index . . . . . . . . . . . . . 408
Related Service Procedures ........... 420
Product Overview . . . . . . . . . . . . . . . . 424
FRU Removals and Replacements ........ 426
Locations . . . . . . . . . . . . . . . . . . . . 458
Parts Listing . . . . . . . . . . . . . . . . . . 460
Common Devices Checkout .......... 469
External Diskette Drive Test ........... 470
External Display Self-Test ............ 470
External Keyboard/Auxiliary Input Device Checkout 471
Fax/Modem Checkout . . . . . . . . . . . . . . 472
Printer Checkout . . . . . . . . . . . . . . . . 474
Port Replicator Checkout ............ 475
TrackPoint II Checkout ............. 476
TV Tuner . . . . . . . . . . . . . . . . . . . . 477
Common Parts Listing ............. 483
Miscellaneous Information . . . . . . . . . . . 489
Acronyms, Abbreviations and Terms ....... 489
Send Us Your Comments! ............ 491
Do You Need Technical References? ...... 492
Problem Determination Tips ........... 493
Phone Numbers, U.S. and Canada ........ 494
Notices . . . . . . . . . . . . . . . . . . . . . 497
viii IBM Mobile Systems HMM