IBM THINKPAD 760E-ED (9546), THINKPAD 385 (2635), THINKPAD 760C-CD (9546), THINKPAD 365CS-CSD (2625), THINKPAD 365C-CD (2625), THINKPAD 760L-LD (9546), THINKPAD 760XD (9547), THINKPAD 760EL-ELD (9547), THINKPAD 380 (2635), THINKPAD 365X-XD (2625), THINKPAD 760XL (9546), THINKPAD 560 (2640) User Manual

IBM Mobile				Systems	S82G-1503-05
Hardware		Maintenance		Manual
Volume	3:	ThinkPad		Computers
March	1997
We	Want	Your	Comments!
(Please		see	page	611)

This Manual Supports:
ThinkPad 365C/CD	(2625)
ThinkPad 365CS/CSD	(2625)
ThinkPad 365X/XD	(2625)
ThinkPad 380	(2635)
ThinkPad 385	(2635)
ThinkPad 560	(2640)
ThinkPad 760C/CD	(9546)
ThinkPad 760E/ED	(9546)
ThinkPad 760L/LD	(9546)
ThinkPad 760EL/ELD	(9547)
ThinkPad 760XL	(9546)
ThinkPad 760XD	(9547)
SelectaDock	(3547)

IBM Mobile				Systems	S82G-1503-05
Hardware		Maintenance		Manual
Volume	3:	ThinkPad		Computers
March	1997
We	Want	Your	Comments!
(Please		see	page	611)

IBM

Note

Before using this information and the product it supports, be sure to read the general information under “Notices” on page 616.

Sixth	Edition	(March		1997)
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 1997. 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 - ThinkPad HMM Volume 3

About	This Manual
This	manual	contains	service and	reference	information for
IBM ThinkPad 365, 380, 385, 560, 760, and SelectaDock
products. Use this manual along with the					advanced
diagnostic		tests to	troubleshoot	problems	effectively.

The manual is divided into sections as follows:

ŸThe Introduction section provides general information, guidelines, and safety information required to service computers.

ŸThe product-specific sections include service,

reference, and product-specific parts information.

ŸThe Common Devices Checkout section provides

procedures for testing the devices that are commonly

attached to ThinkPad computers.

ŸThe 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 8 and “Safety
Information” on page 15.

iii

Related Publications

The following mobile product publications are available through IBM or your IBM Authorized Dealer.

Publication

Part, Form

Number

Mobile

Systems

HMM

30H2356,

S82G-1501-01

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)

Mobile

Systems

HMM

30H2357,

S82G-1502-03

Volume

2: ThinkPad

Computers

(Model

340,

355,

360, 370,

700,

701,

720,

750,

755)

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)

61G1193,

S61G-1193

HMS

ThinkPad

720/720C

(9552)

61G1187,

S61G-1187

HMR

ThinkPad

730T

(2524)

HMM

82G5497,

S82G-5497

ThinkPad

Exp.

Crtg.

(3550)

42G2338,

S42G-2338

HMS

ThinkPad

Exp.

Crtg.

(3550)

42G2339,

S42G-2339

HMR

PS/2

FaxConcentrator

HMS

15F2262,

S15F-2262

PS/2

FaxConcentrator

HMR

84F8541,

S84F-8541

PS/2

Comm.

Cartridge

I

10G5993,

S10G-5993

HMS

PS/2

Comm.

Cartridge

I

10G5992,

S10G-5992

HMR

IBM High Speed Internal,61G1556, S61G-1556

PCMCIA

Data/Fax

Modems

iv IBM Mobile Systems - ThinkPad HMM Volume 3

Related

Diskettes

The

following

diskettes

are

available through IBM or your

IBM

Authorized

Dealer.

Diskette

Part, Form

Number

ThinkPad

300

(2615)

33G9361,

S33G-9361

Advanced

Diagnostics

Diskette

ThinkPad

350,

350C,

425,

A211000,

GA21-1000

425C (2618)

Advanced

Diagnostics

Diskette

ThinkPad

365

(2625)

76H7578,

S30H-2498

Advanced

Diagnostics

Diskette

ThinkPad

500

(2603)

71G3702,

S71G-3702

Advanced

Diagnostics

Diskette

ThinkPad

510

(2604)

83G8095,

S83G-8095

Advanced

Diagnostics

Diskette

ThinkPad

700

(9552)

42G2017,

S42G-2017

Reference

Diskette

ThinkPad

700C

(9552)

42G2023,

S42G-2023

Reference

Diskette

ThinkPad

720/720C

(9552)

61G1194,

S61G-1194

Reference

Diskette

ThinkPad

Hardware

78H5384,

S78H-5384

Maintenance

Diskette

(for

all Models

355, 360,

560,

750,

755,

760)

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 Mobile Systems - ThinkPad HMM Volume 3

Contents

Introduction				. . . . . . . . . .								. .		.	. . .	. . .	1
Portable		Computer				Descriptions. . . . . . . . . .							2
Drive	and		Diskette				Compatibility. .Matrix. . . . .					5
Important			Service			Information. . . . . . . . . . .							6
Safety Notices (Multi-lingual										Translations). . . . .		8
Safety Information							. . . . . . . .					. . . . . . . . 15
Laser	Compliance				Statement . . . . . . . . . . .								20
Screw	Size Chart. . . . . . . . . . . . . . . . .													22
ThinkPad 365		(2625)					. . . . . . . .					. . . . . . 25
Read	This		First. . . . . . . . . . . . . . . . . .											27
General Checkout . . . . . . . . .												. . . . . . . . 30
Symptom-to-FRU Index							. . . . . . . .					. . . . . . 41
Related		Service				Procedures. . . . . . . . . . .						.	50
Diagnostic			Test		Programs. . . . . . . . . . . .							.	52
Using	the		Diagnostics					Test		Programs. . . . . . .		54
Product		Overview				(365C,		CD,	CS, CSD). . . . . .			58
Product Overview						(365E, ED) . . . . . .						. . . . . 59
FRU	Removals			and		Replacements. . . . . . . . .						60
Locations . . . . . . . . . . .												. . . . . . . . . . 81
Parts	Listing			365C,			CD,	CS,	CSD	(2625). . . . .	84
Parts	Listing			365E,			ED (2625). . . . . . . . . . .						87
ThinkPad	365X,		365XD	(2625)					. . . . . . . . . .			91
Read	This		First. . . . . . . . . . . . . . . . . .											93
Checkout Guide						. . . . . . . . .						.	. . . . . . . 96
Symptom-to-FRU Index							. . . . . . . .					. . . . . 106
Related		Service				Procedures. . . . . . . . . . .						117
Product Overview						(365X, 365XD)				. . . . .		.	.	.	126
FRU	Removals			and		Replacements. . . . . . . .						127
Locations . . . . . . . . . . .												. . . . . . . . . 164
Parts	Listing			365X,			365XD (2625). . . . . . . .					170
ThinkPad	380,	380D,		385,		385D (2635)				. . . . .	183
Read	This		First. . . . . . . . . . . . . . . . .											185
Checkout Guide						. . . . . . . . .						. . . . . . . 189
Symptom-to-FRU Index							. . . . . . . .					. . . . . 199
Related		Service				Procedures. . . . . . . . . . .						210
Product		Overview				(380,		380D,		385, 385D). . . .	215
FRU	Removals			and		Replacements. . . . . . . .						216
Locations . . . . . . . . . . .												. . . . . . . . . 249
Parts	Listing			380/385 (2635). . . . . . . . . .								252
ThinkPad 560		(2640)					. . . . . . . .					. . . . . 263
Read	This		First. . . . . . . . . . . . . . . . .											265
Checkout Guide						. . . . . . . . .						. . . . . . . 268
Symptom-to-FRU Index							. . . . . . . .					. . . . . 279
Related		Service				Procedures. . . . . . . . . . .						291
Product Overview						(560) . . . . . . . .							.	.	. . .	296
FRU	Removals			and		Replacements. . . . . . . .						297
Locations . . . . . . . . . . .												.	.	.	. . .	. . .	321
Copyright				IBM		Corp.		1997		vii

Parts		Listing				560		(2640). . . . . . . . . . . .						.	325
ThinkPad 760			(9546, 9547)									. . . . . .		. . . . 335
Read		This			First. . . . . . . . . . . . . . . . .										338
Checkout Guide								. . . . . . . . .						. . . . . . . 341
Symptom-to-FRU Index										. . . . . . . .				. . . . . 359
Related				Service				Procedures. . . . . . . . . . .						372
Product Overview								(760) . . . . . . .						. . . . . . 377
FRU		Removals				and		Replacements. . . . . . . .						382
LCD	Removal				and		Replacement. . . . . . . . .							427
LCD	Unit,			12.1				SVGA (P/N 29H9226, ASM P/N
29H9029) . . . . . . . . . . .														.	. . . .	.	.	.	428
LCD	Unit,			12.1				SVGA (P/N 29H9226, ASM P/N
73H6599) . . . . . . . . . . .														. . . . . . . . 433
LCD	Unit,			10.4			SVGA		(P/N			29H9227). . . . . .		439
LCD	Unit,			10.4			VGA		(P/N		46H5355). . . . . . .			444
LCD	Unit,			11.3				DSTN	(P/N			39H6232). . . . . .		449
LCD	Unit,			12.1				XGA. . . . . . . . . . . . . .							454
LCD	Unit,			12.1				SVGA		(P/N		82H8496). . . . . .		460
LCD Unit, 12.1 SVGA (P/N 11J8867, ASM P/N
11J8855)					. . . . . . . . . . . . . . . .												. .	.	466
LCD	Unit,			12.1				SVGA (P/N 46H5725, ASM P/N
46H5723) . . . . . . . . . . .														. . . . . . . . 472
Locations . . . . . . . . . . .														. . . . . . . . . 478
Parts		Listing				760	(9546,			9547). . . . . . . . .				483
LCD	Parts			List . . . . . . . . . . . . . . . . .											520
ThinkPad		SelectaDock			Docking			System				. . . .	547
Read		This			First. . . . . . . . . . . . . . . . .										548
General Preparation . . . . . . . .														.	. . . .	.	.	550
Checkout Guide								. . . . . . . . .						.	. . . . . . 551
Printer				. . . . . . . . . . .										.	. . . .	. . . . . 554
Running Diagnostics									. . . . . . . .					.	. . . .	.	559
Symptom-to-FRU Index										. . . . . . . .				.	. . . .	565
Undetermined Problems . . . . . . .														. . . . . . 573
FRU		Removals				and		Replacements. . . . . . . .						574
Locations . . . . . . . . . . .														. . . . . . . . . 583
Parts		Listing				SelectaDock					(3547). . . . . . . .			588
Common	Devices			Checkout							. . . . . . . . . .			591
External			Diskette					Drive .Test. . . . . . . . . .						592
External			Display					Self-Test. . . . . . . . . . . .							592
External Keyboard/Auxiliary Input Device Checkout															593
Fax/Modem Checkout . . . . . . . . . . . . . .																	594
Printer Checkout								. . . . . . . . .						. . . . . . . 596
Port		Replicator						Checkout. . . . . . . . . . . .							597
TrackPoint Checkout								. . . . . . . .						.	. . . . .		598
TV Tuner . . . . . . . . . . .														.	. . . .	.	.	.	. 599
Common	Parts			Listing					. . . . . . . . . . . .					.	605
Miscellaneous Information											. . . . . . .			. . . . 609
Acronyms,				Abbreviations						and		Terms. . . . . . .		609
Send		Us		Your		Comments!. . . . . . . . . . . .									611
viii		IBM		Mobile				Systems			-	ThinkPad HMM Volume	3

Do You Need		Technical		References?. . . . . .	612
Problem	Determination		Tips. . . . . . . . . . .		613
Phone	Numbers,	U.S.	and	Canada. . . . . . . .	614
Notices . . . . . . . . . . .					. . . . . . . . . . 616

Contents ix

x IBM Mobile Systems - ThinkPad HMM Volume 3

Introduction

Portable Computer			Descriptions. . . . . . . . . .				2
Drive	and	Diskette		Compatibility. .Matrix. . . . .		5
Important		Service Information. . . . . . . . . . .					6
How	to	Use	Error Messages. . . . . . . . . .				7
How	to	Read	POST	Error	Messages. . . . . .	7
Safety Notices (Multi-lingual					Translations). . . . .	8
Safety Information				. . . . . . . . .			. . . . . . . 15
General Safety				. . . . . . . . .			. . . . . . . 15
Electrical Safety				. . . . . . . . .			. . . . . . . 16
Safety		Inspection		Guide. . . . . . . . . . . .			17
Handling Electrostatic Discharge-Sensitive Devices							19
Grounding Requirements . . . . . . . .							. . . . 19
Laser	Compliance		Statement . . . . . . . . . . .				20
Screw	Size Chart. . . . . . . . . . . . . . . . . 22

Copyright IBM Corp. 1997

1

Portable Computer Descriptions

Models N51, CL57, and P70/75 and Thinkpads 700x and

720x are Micro Channel systems. All others are AT/ISA bus systems.

Model				Type	Processor		Memory	Hrd Dsk
Model	L40SX			8543-044		386SX-20		2M/18M	60M
Model	N45		SL	2614-065		386SL-25		2M/8M	80M
				2614-067 386SL-25				2M/8M	120M
Model	N51		SLC	8551-025		386SLC-16		2M/10M	80M
Model	N51		SX	8551-033		386SX-16		2M/10M	40M
Model	CL57		SX	8554-045		386SX-20		2M/16M	80M
Model	P70		386	8573-031		80386-16		2M/8M	30M
				8573-061 80386-20				2M/8M	60M
				8573-121 80386-20				2M/8M	120M
Model	P75		486	8573-161		80486-33		8M/16M	160M
				8573-401 80486-33				8M/16M	400M
ThinkPad		300		2615-065		386SL-25		4M/12M	80M
				2615-067 386SL-25				4M/12M	120M
ThinkPad		340		2610		486SLC2-50/25		4M/12M	125M
ThinkPad		340CSE		2610		486SLC2-50/25		4M/12M	200M
ThinkPad		340CSE		2610		486SLC2-66/33		4M/12M	360M
ThinkPad		345		2610		486DX4-75		4M/20M	360M
ThinkPad		345CS		2610		DX4-75		4M/20M	540M
ThinkPad		350		2618-AOE		486SL-25		4M/20M	85M
				2618-JOA 486SL-25				4M/20M	125M
				2618-LOA 486SL-25				4M/20M	250M
ThinkPad		350C		2618-NOA		486SL-25		4M/20M	125M
				2618-POA 486SL-25				4M/20M	250M
ThinkPad		355		2619		486SX-33		4M/16M	125M
ThinkPad		355C		2619		486SX-33		4M/16M	125M
				2619		486SX-33		4M/16M	250M
ThinkPad		355Cs		2619		486SX-33		2M/16M	170M
				2619		486SX-33		2M/16M	250M
ThinkPad		360		2620		486SX-33		4M/16M	170M
				2620		486SX-33		4M/16M	340M
ThinkPad		360C		2620		486SX-33		4M/16M	170M
				2620		486SX-33		4M/16M	340M
ThinkPad		360Cs		2620		486SX-33		4M/16M	170M
				2620		486SX-33		4M/16M	340M
ThinkPad		360Ce		2620		486DX2-50/25		4M/16M	170M
				2620		486DX2-50/25		4M/16M	340M
				2620		486DX2-50/25		4M/16M	540M
ThinkPad		360Cse		2620		486DX2-50/25		4M/16M	170M
				2620		486DX2-50/25		4M/16M	340M
				2620		486DX2-50/25		4M/16M	540M
ThinkPad		360P		2620		486SX-33		4M/16M	170M
				2620		486SX-33		4M/16M	340M
ThinkPad		365C		2625-205		486DX4-75		8M/24M	340M
				2625-x05 486DX4-75				8M/24M	540M
ThinkPad		365E		2625		5x86-100/33		8M/24M	540M
ThinkPad		365ED		2625		5x86-100/33		8M/24M	540M
ThinkPad		365X/XD		2625		Pentium-100		8M/24M	540M
				2625		Pentium-100		8M/24M	810M
				2625		Pentium-100		8M/24M	1.0G
ThinkPad		365X/XD		2625		Pentium-120		8M/24M	540M
				2625		Pentium-120		8M/24M	810M
				2625		Pentium-120		8M/24M	1.0G
ThinkPad		365X/XD		2625		Pentium-133		8M/40M	810M
				2625		Pentium-133		8M/40M	1.0G
				2625		Pentium-133		8M/40M	1.3G
ThinkPad		370C		9545		486DX4-75/25		4M/32M	340M
				9545		486DX4-75/25		4M/32M	540M
				9545		486DX4-75/33		4M/32M	810M
C			Color			T		Tablet
M			Megabyte			TPF		ThinkPad File
P			Pen

2 IBM Mobile Systems - ThinkPad HMM Volume 3

Model		Type	Processor		Memory	Hrd Dsk
ThinkPad	380	2635		Pentium-150		16M/48M	1.08G
		2635		Pentium-150		16M/48M	1.35G
		2635		Pentium-150		16M/48M	2.10G
ThinkPad	385	2635		Pentium-150		16M/48M	1.08G
		2635		Pentium-150		16M/48M	1.35G
		2635		Pentium-150		16M/48M	2.10G
ThinkPad	500	2603-081		486SLC2-50/25		4M/12M	80M
		2603-171 486SLC2-50/25				4M/12M	170M
ThinkPad	560	2640		Pentium-100		8M/40M	540M
		2640		Pentium-100		8M/40M	810M
		2640		Pentium-100		8M/40M	1.0G
ThinkPad	560	2640		Pentium-120		8M/40M	540M
		2640		Pentium-120		8M/40M	810M
		2640		Pentium-120		8M/40M	1.0G
ThinkPad	560	2640		Pentium-130		8M/40M	540M
		2640		Pentium-130		8M/40M	810M
		2640		Pentium-130		8M/40M	1.0G
ThinkPad	700	9552-300		486SLC-25		4M/16M	80M
		9552-301 486SLC-25				4M/16M	120M
ThinkPad	700C	9552-30B		486SLC-25		4M/16M	120M
ThinkPad	701C	2630		486DX2-25/50		4M/32M	360MB
		2630		486DX2-25/50		4M/32M	540MB
		2630		486DX4-25/75		8M/32M	360MB
		2630		486DX4-25/75		8M/32M	540MB
ThinkPad	701Cs	2630		486DX2-25/50		4M/32M	360MB
		2630		486DX2-25/50		4M/32M	540MB
		2630		486DX4-25/75		8M/32M	360MB
		2630		486DX4-25/75		8M/32M	540MB
ThinkPad	710T	2523-09Y 486SLC2-25				4M/12M	TPF
		2523-302 486SLC2-25				4M/12M	60M
		2523-303 486SLC2-25				4M/12M	60M
ThinkPad	720	9552-307		486SLC-25/50		4M/16M	120M
		9552-308 486SLC-25/50				4M/16M	160M
ThinkPad	720C	9552-30J		486SLC-25/50		4M/16M	160M
ThinkPad	730T	2524		486SLC2-25		4M/12M	0M
		2524		486SLC2-25		4M/12M	60M
ThinkPad	750	9545-006		486SL-33		4M/20M	170M
		9545-008 486SL-33				4M/20M	340M
ThinkPad	750C	9545-306		486SL-33		4M/20M	170M
		9545-308 486SL-33				4M/20M	340M
ThinkPad	750Ce	9545		P24S-50/25		4M/20M	340M
ThinkPad	750Cs	9545		486SL-33		4M/20M	170M
		9545		486SL-33		4M/20M	340M
ThinkPad	750P	9545-40C		486SL-33		4M/20M	170M
		9545-40E 486SL-33				4M/20M	340M
ThinkPad	755C	9545		486DX4-50/25		4M/32M	170M
		9545		486DX4-50/25		4M/32M	340M
		9545		486DX4-50/25		4M/32M	540M
		9545		486DX4-75/25		4M/32M	170M
		9545		486DX4-75/25		4M/32M	340M
		9545		486DX4-75/25		4M/32M	540M
ThinkPad	755CD	9545		486DX4-100/33		8M/32M	540M
		9545		486DX4-100/33		8M/32M	810M
ThinkPad	755CDV	9545		486DX4-100/33		8M/32M	540M
		9545		486DX4-100/33		8M/32M	810M
ThinkPad	755Ce	9545		486DX4-100/33		8M/32M	340M
		9545		486DX4-100/33		8M/32M	540M
		9545		486DX4-100/33		8M/32M	810M
ThinkPad	755Cs	9545		486DX4-50/25		8M/32M	170M
		9545		486DX4-50/25		8M/32M	340M
		9545		486DX4-50/25		8M/32M	540M
		9545		486DX4-75/25		8M/32M	170M
		9545		486DX4-75/25		8M/32M	340M
		9545		486DX4-75/25		8M/32M	540M
ThinkPad	755Cse	9545		486DX4-100/33		8M/32M	340M
		9545		486DX4-100/33		8M/32M	540M
		9545		486DX4-100/33		8M/32M	810M
C	Color			T		Tablet
M	Megabyte			TPF		ThinkPad File
P	Pen

Introduction3

Model		Type	Processor	Memory	Hrd Dsk
ThinkPad	755CV	9545	486DX4-100/33		8M/32M	540M
		9545	486DX4-100/33		8M/32M	810M
ThinkPad	755CV	9545	486DX4-100/33		8M/32M	540M
		9545	486DX4-100/33		8M/32M	810M
ThinkPad	760C/CD	9546	Pentium-90		8M/40M	360M
		9546	Pentium-120		8M/40M	720M
		9546	Pentium-90		8M/40M	810M
		9546	Pentium-120		8M/40M	1.2G
ThinkPad	760E/ED	9546	Pentium-120		8M/80M	810M
		9546	Pentium-133		8M/80M	1.0G
		9546	Pentium-150		8M/80M	1.2G
		9546	Pentium-166		8M/80M	1.3G
		9546	Pentium-166		8M/80M	2.1G
ThinkPad	760EL/ELD	9547	Pentium-100		8M/80M	810M
		9547	Pentium-100		8M/80M	1.0G
		9547	Pentium-100		8M/80M	1.2G
		9547	Pentium-120		8M/80M	810M
		9547	Pentium-120		8M/80M	1.0G
		9547	Pentium-120		8M/80M	1.2G
		9547	Pentium-133		8M/80M	810M
		9547	Pentium-133		8M/80M	1.0G
		9547	Pentium-133		8M/80M	1.2G
ThinkPad	760L/LD	9547	Pentium-90		8M/40M	810M
		9547	Pentium-90		8M/40M	1.1G
		9547	Pentium-90		8M/40M	1.2G
		9547	Pentium-120		8M/40M	810M
		9547	Pentium-120		8M/40M	1.1G
		9547	Pentium-120		8M/40M	1.2G
ThinkPad	760X	9546	Pentium-150		32M/80M	3.0G
ThinkPad	760XD	9546	Pentium-166		32M/80M	3.0G
ThinkPad	760XL	9547	Pentium-166		16M/80M	2.1G
		9547	Pentium-166		16M/80M	3.0G
C	Color		T		Tablet
M	Megabyte		TPF		ThinkPad File
P	Pen

4 IBM Mobile Systems - ThinkPad HMM Volume 3

Drive and Diskette Compatibility Matrix

The following table provides identification information for 3.5-inch drives.

Diskette	Identifying
Drive	Mark
3.5-Inch - 1.44MB	1.44 on the eject	button
3.5-Inch - 2.88MB	2.88 on the eject button

The following	table	provides	compatibility information for
3.5-inch diskettes and 3.5-inch diskette drives.
Diskette	1.44MB		2.88MB
Capacity	Drive		Drive
1.0MB	Read/Write		Read/Write
2.0MB	Read/Write		Read/Write
4.0MB	Not	Compatible	Read/Write

The following table provides identification information for

5.25-inch diskette drives.

Diskette			Identifying
Drive			Mark
5.25-Inch	-	360KB	(External)Asterisk	on	bezel
5.25-Inch	-	1.2MB	(Internal)1.2 on	the	eject button

The	following	table	provides		compatibility	information		for
5.25-inch diskettes and 5.25-inch diskette drives.
Diskette		360KB			1.2MB
Capacity		Drive			Drive
360KB		Read/Write			Read/Write
1.2MB		Not	Compatible		Read/Write
Note:	A 360KB	diskette		written	to or formatted on a
	1.2MB	drive	can	be read reliably		only on a		1.2MB
	drive.

Introduction5

Important

Service

Information

Important

Diskette fixes are customer installable.

The diskette

fixes are located on the PC

Company

Bulletin Board

Service (BBS). The direct phone line for modem

connection is 919-557-0001 or tieline 255-0001.

Advise customers to contact the PC Company

HelpCenter at 800-772-2227 if they need assistance in

obtaining or installing any diskette fixes.

Customers

in

Canada

should

call

IBM

HelpPC at

800-565-3344

for

assistance

or

down-load

information.

The Canadian BBS phone numbers

are:

Montreal

514-938-3022

Toronto

905-316-4255

Vancouver

604-664-6464

Winnipeg

204-934-2735

FRU Replacement

Strategy

Before

Replacing

Parts

Ensure that all diskette fixes are installed prior to

replacing

any

FRUs

listed

in

this

manual.

Use the following strategy to prevent unnecessary FRU replacement and service expense:

Ÿ	If you		are instructed		to replace a FRU		and	that
	does	not	correct the		problem,	reinstall	the	original
	FRU	before	you	continue	.
Ÿ	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 the first
	board that you replaced does not correct the problem,
	reinstall the original board, then replace the other
	(processor			or	system)	board.

Ÿ If	an	adapter or device consists of more	than	one
FRU,	an error code may be caused by any		of	the
FRUs. 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
A customized setup configuration (other							than default
settings)		may		exist on the computer you			are servicing.
Running Automatic Configuration may alter those
settings. Note				the	current configuration	settings (using
the View Configuration option) and verify that the
settings		are		in place when service is complete.
6 IBM Mobile				Systems	- ThinkPad HMM Volume	3

The	advanced diagnostic tests are intendedonly	to test
IBM	products. Non-IBM products or modified options can
give	false errors and invalid responses.

Hard	Disk Drive			Replacement Strategy:
Always try		to		run a	low-level	format before replacing a hard
disk	drive.
	Attention
The drive startup sequence in the computer you are
servicing might have been changed. Be extremely
careful during write operations such as copying,
saving, or formatting. Data or programs can be
overwritten			if you		select	an incorrect drive.

How	to	Use	Error	Messages
Use the error codes displayed on the screen to diagnose
failures. If			more	than one error code is displayed, begin
the	diagnosis		with	the first error code. The cause of the
first error code can result in false error codes being
displayed. If no				error code is displayed, see if the error
symptom is listed in the Symptom-to-FRU Index for the
computer		you	are	servicing.

How	to	Read	POST	Error	Messages
POST	error messages			are displayed on the screen as
three,		four,	five, or		eight digits. The error messages that
can	be	displayed		as	shorter POST messages are

highlighted in this index. Some digits will represent different information for SCSI errors versus non-SCSI errors.

The following example shows which digits display the shorter POST error messages and also defines the SCSI information in an eight-digit error message.

Shorter POST Messages *3333-3333-3333-33330

++ + + +

*3333-3333-3333-3333-3333-3333-3333-33330 + ð + ð + ð + ð + ð + ð + ð + ð + ,3333"3333"3333"3333"3333"3333"3333"33332

+	+	+	+	+	+	+	+
Reserved	+	+	+	+	+	+	Size (SCSI)
	,3333"33332			+	+	Slot	Number (SCSI)
		Device Code		+	Logical Unit Number (SCSI)
				ID (SCSI)

All SCSI devices are set to a different SCSI ID.

Duplicate SCSI ID settings can generate	a false	error
message. Use the SCSI ID to determine	whether	the error
message is coming from an internal or an	external	device.

Introduction7

Safety Notices (Multi-lingual

Translations)

In this manual, safety notices

appear in English with a

page number reference to the appropriate multi-lingual,

translated

safety

notice

found

in

this

section.

The

following

safety

notices

are provided

in

English,

French,

German,

Italian,

and

Spanish

languages.

Safety

Notice

1

Before the computer is powered-on after

FRU

replacement,

make

sure

all

screws,

springs,

or

other

small

parts

are

in

place

and

are not left loose inside

the

computer. Verify

this

by

shaking

the

computer

and

listening

for

rattling

sounds. Metallic

parts

or

metal flakes can cause electrical

shorts.

Avant de remettre l'ordinateur sous tension après

remplacement

d'une

unité

en

clientèle, vérifiez

que

tous les ressorts, vis et

autres pièces sont bien en

place et bien fixées. Pour ce faire, secouez l'unité et

assurez-vous qu'aucun bruit

suspect ne

se

produit.

Des pièces métalliques ou des copeaux de métal

pourraient causer un court-circuit.

Bevor nach einem FRU-Austausch der Computer

wieder angeschlossen wird, muß sichergestellt

werden, daß keine Schrauben, Federn oder andere

Kleinteile

fehlen

oder

im

Gehäuse

vergessen

wurden.

Der Computer muß geschüttelt und auf

Klappergeräusche

geprüft

werden. Metallteile

oder

-splitter können Kurzschlüsse erzeugen.

Prima di accendere l'elaboratore dopo che é stata

effettuata la sostituzione di una FRU, accertarsi

che

tutte le viti, le molle e

tutte le altri parti di piccole

dimensioni

siano

nella

corretta

posizione

e

non

siano

sparse all'interno dell'elaboratore. Verificare ciò

scuotendo l'elaboratore e prestando attenzione ad

eventuali rumori; eventuali parti o pezzetti metallici

possono

provocare

cortocircuiti

pericolosi.

Antes

de

encender

el

sistema

despues

de

sustituir

una

FRU,

compruebe

que

todos

los

tornillos,

muelles

y

demás piezas

pequeñas

se

encuentran

en

su

sitio

y

no se encuentran sueltas dentro del sistema.

Compruébelo agitando el sistema y escuchando los

posibles ruidos que provocarían. Las piezas metálicas

pueden

causar

cortocircuitos

eléctricos.

8 IBM Mobile Systems - ThinkPad HMM Volume 3

Safety

Notice

2

Some

standby

batteries

contain a small amount of

nickel

and

cadmium. Do

not disassemble

it,

recharge

it, throw

it

into

fire

or

water,

or

short-circuit

it. Dispose

of the battery as required by local ordinances or

regulations. Use only the battery in the appropriate

parts

listing. Use

of

an incorrect battery can result in

ignition or explosion of the battery.

Certaines

batteries

de

secours

contiennent

du

nickel

et du cadmium. Ne les démontez pas, ne les

rechargez

pas,

ne

les

exposez

ni

au

feu

ni

à

l'eau.

Ne les mettez pas en

court-circuit. Pour les mettre au

rebut, conformez-vous à la réglementation en vigueur.

Lorsque

vous

remplacez

la pile de sauvegarde ou

celle de l'horloge temps réel, veillez

à

n'utiliser

que les

modèles cités dans la liste de pièces détachées

adéquate. Une batterie ou une pile inappropriée

risque de prendre feu ou

d'exploser.

Die Bereitschaftsbatterie, die sich unter dem

Diskettenlaufwerk befindet, kann geringe Mengen

Nickel und Cadmium enthalten. Sie darf nur durch die

Verkaufsstelle oder den IBM Kundendienst

ausgetauscht werden. Sie darf nicht zerlegt,

wiederaufgeladen, kurzgeschlossen, oder Feuer oder

Wasser ausgesetzt werden. Die Batterie kann

schwere

Verbrennungen

oder

Verätzungen

verursachen. Bei der Entsorgung die örtlichen

Bestimmungen

für

Sondermüll

beachten. Beim

Ersetzen der Bereitschaftsoder Systembatterie nur

Batterien des Typs verwenden, der in der

Ersatzteilliste aufgeführt ist. Der Einsatz falscher

Batterien

kann

zu

Entzündung

oder

Explosion

führen.

Alcune batterie di riserva contengono una piccola

quantità di nichel e cadmio. Non smontarle, ricaricarle,

gettarle nel fuoco o nell'acqua né cortocircuitarle.

Smaltirle secondo la normativa in vigore (DPR 915/82,

successive

disposizioni

e disposizioni locali). Quando

si sostituisce la batteria dell'RTC (real time clock) o la

batteria di supporto, utilizzare soltanto i tipi inseriti

nell'appropriato Catalogo parti. L'impiego di una

batteria non adatta potrebbe determinare l'incendio o

l'esplosione

della

batteria

stessa.

Algunas baterías de reserva contienen una pequeña cantidad de níquel y cadmio. No las desmonte, ni recargue, ni las eche al fuego o al agua ni las cortocircuite. Deséchelas tal como dispone la normativa local. Utilice sólo baterías que se

encuentren en la lista de piezas. La utilización de una batería no apropiada puede provocar la ignición o explosión de la misma.

Introduction9

Safety Notice

3

The

battery

pack

contains small

amounts

of

nickel.

Do

not

disassemble

it,

throw

it

into

fire

or

water,

or

short-circuit it. Dispose of the battery pack as

required

by

local

ordinances or regulations. Use only

the battery in the appropriate parts listing when

replacing

the

battery pack. Use of an incorrect battery

can

result

in

ignition or explosion of the battery.

La

batterie

contient

du

nickel. Ne

la

démontez

pas,

ne

l'exposez

ni

au

feu

ni

à l'eau. Ne

la

mettez

pas

en

court-circuit. Pour

la

mettre

au

rebut,

conformez-vous

à la réglementation en vigueur. Lorsque vous

remplacez la batterie, veillez à n'utiliser que les

modèles cités dans la liste de pièces détachées

adéquate. En

effet,

une

batterie

inappropriée

risque

de prendre feu ou d'exploser.

Akkus enthalten geringe Mengen von Nickel. Sie

dürfen

nicht

zerlegt,

wiederaufgeladen,

kurzgeschlossen, oder Feuer oder Wasser ausgesetzt

werden. Bei der Entsorgung die örtlichen

Bestimmungen für

Sondermüll

beachten. Beim

Ersetzen der Batterie nur Batterien des Typs

verwenden,

der

in

der

Ersatzteilliste

aufgeführt

ist.

Der Einsatz falscher Batterien kann zu

Entzündung

oder

Explosion

führen.

La batteria contiene piccole quantità di nichel. Non smontarla, gettarla nel fuoco o nell'acqua né cortocircuitarla. Smaltirla secondo la normativa in vigore (DPR 915/82, successive disposizioni e

disposizioni locali). Quando si sostituisce la batteria, utilizzare soltanto i tipi inseriti nell'appropriato Catalogo parti. L'impiego di una batteria non adatta potrebbe determinare l'incendio o l'esplosione della batteria stessa.

Las baterías contienen pequeñas cantidades de
níquel. No las desmonte, ni recargue, ni						las	eche	al
fuego	o al	agua		ni las	cortocircuite.	Deséchelas		tal
como dispone		la	normativa		local. Utilice	sólo	baterías
que se encuentren en la lista de piezas al sustituir la
batería. La utilización de una batería no apropiada
puede	provocar		la	ignición o explosión		de	la misma.

10 IBM Mobile Systems - ThinkPad HMM Volume 3

Safety

Notice

4

The

lithium

battery can cause a fire,

explosion, or

severe burn. Do not recharge it, remove

its polarized

connector, disassemble it, heat it above

100°C

(212°F),

incinerate

it, or expose its cell contents to

water. Dispose of the battery as required by local

ordinances or regulations. Use only the battery in the

appropriate

parts

listing. Use

of

an

incorrect

battery

can

result

in

ignition

or

explosion

of

the

battery.

La pile de sauvegarde contient du lithium. Elle

présente des risques d'incendie, d'explosion ou de

brûlures

graves. Ne

la

rechargez

pas,

ne

retirez

pas

son connecteur polarisé et ne la démontez pas. Ne

l'exposez

pas

à

une

temperature

supérieure

à

100°C,

ne

la

faites

pas

brûler et

n'en

exposez

pas

le

contenu

à l'eau. Mettez la pile au rebut conformément à la

réglementation en vigueur. Une pile inappropriée

risque

de

prendre

feu

ou

d'exploser.

Die

Systembatterie

ist eine Lithiumbatterie. Sie kann

sich entzünden, explodieren oder schwere

Verbrennungen hervorrufen. Batterien dieses Typs

dürfen

nicht

aufgeladen,

zerlegt,

über

100

C

erhitzt

oder verbrannt werden. Auch darf ihr Inhalt nicht mit

Wasser

in

Verbindung gebracht oder der zur richtigen

Polung

angebrachte

Verbindungsstecker

entfernt

werden. Bei der Entsorgung die örtlichen

Bestimmungen

für

Sondermüll

beachten. Beim

Ersetzen der Batterie nur Batterien des Typs

verwenden,

der in der Ersatzteilliste aufgeführt ist.

Der

Einsatz

falscher Batterien kann zu Entzündung

oder

Explosion

führen.

La batteria di supporto e una batteria al litio e puo

incendiarsi, esplodere o procurare gravi ustioni.

Evitare di ricaricarla, smontarne il connettore

polarizzato, smontarla, riscaldarla ad una temperatura

superiore

ai

100

gradi

centigradi,

incendiarla

o

gettarla

in

acqua.

Smaltirla

secondo la normativa in vigore

(DPR 915/82, successive disposizioni e disposizioni

locali). L'impiego di una batteria non adatta potrebbe

determinare l'incendio o l'esplosione della batteria

stessa.

La

bateria

de repuesto es una bateria de litio y puede

provocar incendios, explosiones o quemaduras

graves. No la recargue, ni quite el conector

polarizado,

ni

la

desmonte,

ni

caliente

por

encima

de

los 100°C (212°F), ni la incinere ni exponga el

contenido de sus celdas al agua. Deséchela tal como

dispone

la

normativa

local.

Introduction11

Safety

Notice

5

If

the

LCD

breaks

and

the

fluid

from

inside

the

LCD

gets into your eyes or

on your

hands,

immediately

wash the affected areas with water for at least 15

minutes. Seek

medical

care

if

any

symptoms

from

the

fluid

are

present

after

washing.

Si

le

panneau

d'affichage

à

cristaux

liquides

se

brise

et

que

vous

recevez

dans

les

yeux

ou

sur

les mains

une

partie

du fluide, rincez-les

abondamment

pendant

au moins quinze minutes. Consultez

un

médecin

si

des symptômes

persistent

après

le

lavage.

Die Leuchtstoffröhre im LCD-Bildschirm enthält

Quecksilber. Bei der Entsorgung die örtlichen

Bestimmungen

für

Sondermüll

beachten. Der

LCD-Bildschirm besteht aus Glas und kann

zerbrechen, wenn er unsachgemäß behandelt wird

oder der Computer auf den Boden fällt. Wenn der

Bildschirm beschädigt ist und die darin befindliche

Flüssigkeit

in

Kontakt mit Haut und Augen gerät,

sollten

die

betroffenen

Stellen mindestens

15

Minuten

mit Wasser abgespült und bei Beschwerden

anschließend

ein

Arzt

aufgesucht

werden.

Nel caso che caso l'LCD

si dovesse rompere ed il

liquido

in

esso

contenuto

entrasse in contatto con gli

occhi o le mani, lavare immediatamente le parti

interessate

con

acqua

corrente

per

almeno

15

minuti;

poi consultare un medico se i sintomi dovessero

permanere.

Si

la

LCD

se

rompe y el fluido de su interior entra en

contacto con sus ojos o sus manos, lave

inmediatamente

las áreas

afectadas

con

agua

durante

15

minutos

como

mínimo. Obtenga

atención

medica

si se presenta algún síntoma del fluido despues de

lavarse.

12 IBM Mobile Systems - ThinkPad HMM Volume 3

Safety Notice

6

To avoid shock, do not remove the plastic

cover that

surrounds

the

lower

portion

of

the

inverter

card.

Afin

d'éviter

tout

risque

de

choc

électrique, ne

retirez

pas le cache en plastique protégeant la partie

inférieure

de la

carte

d'alimentation.

Aus Sicherheitsgründen

die

Kunststoffabdeckung,

die

den

unteren Teil der Spannungswandlerplatine umgibt,

nicht

entfernen.

Per evitare scosse elettriche, non rimuovere la

copertura

in

plastica

che

avvolge

la

parte

inferiore

della

scheda

invertitore.

Para

evitar

descargas,

no

quite

la

cubierta

de

plástico

que

rodea

la

parte

baja

de

la

tarjeta

invertida.

Safety Notice 7

Though main batteries have low voltage, a shorted or grounded battery can produce enough current to burn combustible materials or personnel.

Bien que		le voltage des batteries principales soit peu
élevé, le court-circuit ou la mise à la masse d'une
batterie peut produire suffisamment de courant pour
brûler des matériaux combustibles ou causer des
brûlures		corporelles	graves.
Obwohl Hauptbatterien eine niedrige Spannung
haben,	können sie doch bei Kurzschluß			oder Erdung
genug Strom abgeben, um brennbare Materialien zu
entzünden oder Verletzungen bei Personen
hervorzurufen.
Sebbene le batterie di alimentazione siano a basso
voltaggio,		una batteria in corto circuito o a massa può
fornire corrente sufficiente da bruciare materiali
combustibili o provocare ustioni ai tecnici di
manutenzione.
Aunque	las	baterías	principales tienen	un voltaje bajo,
una batería cortocircuitada o con contacto a tierra
puede producir la corriente suficiente como para
quemar	material combustible o provocar quemaduras
en el	personal.

Introduction13

	Safety		Notice	8
Before			removing		any FRU, power-off the		computer,
unplug		all power			cords from electrical	outlets, remove
the battery pack, then disconnect any interconnecting
cables.
Avant de retirer une unité remplaçable en clientèle,
mettez le système hors tension, débranchez tous les
cordons d'alimentation des socles de prise de courant,
retirez la batterie et déconnectez tous les cordons
d'interface.
Die		Stromzufuhr			muß abgeschaltet, alle	Stromkabel
aus		der Steckdose gezogen, der Akku entfernt und
alle		Verbindungskabel abgenommen sein, bevor eine
FRU		entfernt		wird.
Prima di rimuovere qualsiasi FRU, spegnere il
sistema, scollegare dalle prese elettriche tutti i cavi di
alimentazione, rimuovere la batteria e						poi scollegare i
cavi		di	interconnessione.
Antes de quitar una FRU, apague el sistema,
desenchufe todos los cables de las tomas de corriente
eléctrica, quite la batería y, a continuación,
desconecte cualquier cable de conexión entre
dispositivos.

14 IBM Mobile Systems - ThinkPad HMM Volume 3

Safety Information

The following section contains the safety information that you need to be familiar with before servicing an IBM mobile computer.

General Safety

Follow these rules to ensure general safety:

ŸObserve good housekeeping in the area of the

machines

during

and

after

maintenance.

Ÿ When

lifting

any

heavy

object:

1.

Ensure

you

can

stand

safely

without

slipping.

2.

Distribute the weight of the object equally

between

your

feet.

3.

Use

a

slow lifting force. Never move suddenly

or

twist

when you attempt to lift.

4.

Lift

by

standing or by pushing up with your leg

muscles; this action removes the strain from the

muscles in your backDo .not attempt to lift any

objects

that

weigh

more than

16

kg

(35 lb)

or

objects

that

you think

are too

heavy for

you.

ŸDo not perform any action that causes hazards to the

customer, or that makes the equipment unsafe.

ŸBefore you start the machine, ensure that other

service		representatives		and the	customer's	personnel
are	not	in a	hazardous	position.
Ÿ Place	removed		covers and	other	parts in a	safe

place, away from all personnel, while you are

servicing

the

machine.

Ÿ Keep

your tool case away

from walk areas so that

other

people

will

not

trip

over it.

Ÿ

Do

not

wear

loose

clothing

that can be trapped in the

moving

parts

of

a

machine. Ensure

that

your

sleeves

are fastened or rolled up

above

your

elbows. If

your

hair

is

long,

fasten

it.

Ÿ

Insert

the

ends

of

your

necktie

or

scarf

inside

clothing

or fasten it with a nonconductive clip, approximately 8

centimeters

(3

inches) from

the

end.

Ÿ

Do

not

wear

jewelry,

chains, metal-frame

eyeglasses,

or metal fasteners for your clothing.

Attention: Metal objects are good electrical conductors.

ŸWear safety glasses when you are: hammering,

drilling soldering, cutting wire, attaching springs, using

solvents, or working	in	any other conditions that might
be hazardous to	your	eyes.

ŸAfter service, reinstall all safety shields, guards,

labels, and ground wires. Replace any safety device that is worn or defective.

ŸReinstall all covers correctly before returning the machine to the customer.

Introduction15

Electrical Safety

Observe the following rules when working on electrical equipment.

	Important
Use		only	approved tools and test equipment. Some
hand		tools		have	handles	covered	with a		soft material
that does not insulate you when working with live
electrical			currents.
Many customers have, near their							equipment, rubber
floor mats that contain small conductive fibers to
decrease electrostatic discharges. Do not use this
type		of	mat to		protect	yourself from		electrical shock.

ŸFind the room emergency power-off (EPO) switch, disconnecting switch, or electrical outlet. If an electrical accident occurs, you can then operate the

switch

or

unplug

the

power

cord

quickly.

Ÿ

Do

not

work

alone under hazardous conditions or

near equipment

that

has

hazardous

voltages.

Ÿ

Disconnect

all power

before:

–

Performing

a

mechanical inspection

–

Working

near

power

supplies

–

Removing

or

installing

main

units

Ÿ

Before

you

start

to

work

on the machine, unplug the

power

cord.

If

you

cannot

unplug it, ask the customer

to

power-off

the

wall

box

that

supplies

power

to the

machine

and

to

lock

the

wall box

in

the

off

position.

ŸIf you need to work on a machineexposedthat has

electrical circuits, observe the following precautions:

–Ensure that another person, familiar with the power-off controls, is near you.

Attention: Another person must be there to switch off the power, if necessary.

–Use only one hand when working with

powered-on electrical equipment; keep

the

other

hand in your pocket or behind your back.

Attention:

There

must

be

a

complete

circuit

to

cause electrical shock. By observing the above

rule, you may prevent a current from passing

through your

body.

–

When

using

testers,

set

the

controls

correctly

and use the approved probe leads and

accessories

for

that

tester.

–

Stand

on

suitable

rubber

mats

(obtained

locally,

if necessary)

to

insulate

you from

grounds

such

as metal floor strips and machine frames.

Observe

the

special

safety

precautions

when

you

work

with

very

high

voltages;

these instructions

are in

the safety sections of maintenance information. Use

extreme

care

when

measuring

high

voltages.

16 IBM Mobile

Systems

-

ThinkPad

HMM

Volume

3

Ÿ	Regularly inspect and maintain your						electrical	hand
	tools	for safe		operational		condition.
Ÿ	Do not	use	worn	or	broken	tools and testers.
Ÿ	Never	assume that		power has		been	disconnected
	from a circuit.checkFirst,that it has been
	powered-off.
Ÿ	Always	look	carefully		for possible		hazards in	your
	work area. Examples of these hazards are moist
	floors, nongrounded power extension cables, power
	surges, and		missing		safety	grounds.

ŸDo not touch live electrical circuits with the reflective

surface of a plastic dental mirror. The surface is

conductive;				such touching can cause personal injury
and	machine			damage.
Ÿ Do	not	service			the followingth partsthe power on
when	they are removed from their normal operating
places		in	a	machine:
–	Power		supply		units

–Pumps

– Blowers and fans

–Motor generators

and similar units. (This practice ensures correct
grounding			of	the	units.)
Ÿ If	an		electrical			accident		occurs:
–	Use	caution;		do not		become	a victim
	yourself.
–	Switch		off	power.
–	Send	another		person	to	get	medical	aid.

Safety Inspection Guide

The intent of this inspection guide is to assist you in

identifying potentially	unsafe conditions	on these		products.
Each machine, as it was designed and built,			had	required
safety items installed	to protect users	and	service

personnel from injury. This guide addresses only those items. However, good judgment should be used to identify potential safety hazards due to attachment of non-IBM

features		or	options not		covered by this inspection guide.
If	any	unsafe		conditions	are present, you must determine
how	serious		the	apparent	hazard could be and whether
you	can	continue		without	first correcting the problem.

Consider these conditions and the safety hazards they present:

ŸElectrical hazards, especially primary power (primary

voltage on the frame can cause serious or fatal electrical shock).

Ÿ Explosive hazards, such as a damaged CRT face or bulging capacitor

ŸMechanical hazards, such as loose or missing hardware

Introduction17

The guide consists of a series of steps presented in a checklist. Begin the checks with the power off, and the power cord disconnected.

Checklist:

1.

Check

exterior

covers

for

damage

(loose,

broken, or

sharp

edges).

2. Power-off the

computer. Disconnect

the

power

cord.

3.

Check

the

power

cord

for:

a. A

third-wire ground connector in

good condition.

Use a meter to measure third-wire ground

continuity for 0.1 ohm or less between the

external

ground

pin

and

frame

ground.

b. The

power

cord

should

be the

appropriate type

as

specified

in the

parts

listings.

c.

Insulation must

not

be

frayed

or

worn.

4.

Remove

the

cover.

5.

Check

for

any

obvious non-IBM alterations. Use

good judgment as to the safety of any non-IBM

alterations.

6. Check

inside the unit for any obvious unsafe

conditions,

such

as

metal

filings,

contamination,

water

or

other

liquids,

or

signs

of fire or smoke damage.

7.

Check

for

worn,

frayed,

or

pinched

cables.

8.

Check

that

the

power-supply

cover

fasteners

(screws

or

rivets)

have

not

been

removed

or

tampered

with.

18 IBM Mobile Systems - ThinkPad HMM Volume 3

Handling Electrostatic Discharge-Sensitive Devices

Any computer part containing transistors or integrated

circuits (ICs) should be considered sensitive to electrostatic discharge (ESD). ESD damage can occur when there is a difference in charge between objects. Protect against ESD

damage by equalizing the charge so

that

the

machine, the

part,

the

work

mat,

and

the

person

handling

the

part are all

at the same

charge.

Notes

1. Use

product-specific ESD procedures

when they

exceed

the requirements

noted

here.

2.

Make

sure

that

the

ESD

protective

devices

you

use have been certified (ISO 9000)

as fully

effective.

When handling ESD-sensitive parts:

ŸKeep the parts in protective packages until they are

	inserted	into	the	product.
Ÿ	Avoid contact		with	other	people.
Ÿ	Wear a grounded wrist strap against your skin to
	eliminate	static on		your	body.

ŸPrevent the part from touching your clothing. Most

clothing

is

insulative

and

retains a charge even when

you

are

wearing

a

wrist

strap.

Ÿ Use

the

black

side

of

a

grounded

work

mat

to provide

a static-free work surface. The mat is especially

useful

when

handling

ESD-sensitive

devices.

Ÿ Select a grounding system,

such

as

those

listed

below, to provide protection that meets the specific

service

requirement.

Note

The

use

of

a

grounding

system

is

desirable

but

not

required

to

protect

against

ESD

damage.

– Attach the ESD ground

clip to any frame ground,

ground

braid,

or

green-wire

ground.

– Use

an

ESD

common

ground

or reference

point

when working on a double-insulated or

battery-operated system. You can use coax or

connector-outside

shells

on these

systems.

–Use the round ground-prong of the AC plug on AC-operated computers.

Grounding Requirements

Electrical grounding of the computer is required for operator safety and correct system function. Proper grounding of the electrical outlet can be verified by a certified electrician.

Introduction19

Laser	Compliance		Statement
Some	IBM Personal Computer models are equipped from
the	factory with a CD-ROM			drive. CD-ROM drives are
also	sold separately as options. The CD-ROM drive							is a
laser product. The CD-ROM drive					is certified in the U.S. to
conform to		the	requirements	of	the Department		of	Health
and	Human	Services 21 Code		of	Federal	Regulations
(DHHS	21	CFR)	Subchapter J	for	Class	1 laser	products.

Elsewhere, the drive is certified to conform to the requirements of the International Electrotechnical

Commission			(IEC)		825 and CENELEC EN 60 825 for
Class		1	laser		products.
When a CD-ROM					drive	is		installed, note the following.
CAUTION:
Use	of	controls		or	adjustments		or	performance of
procedures		other		than	those specified			herein	might
result		in hazardous			radiation	exposure.
O	uso	de	controles,		ajustes	ou	desempenho		de
procedimentos			diferentes		daqueles	aqui		especificados
pode	resultar		em	perigosa exposição				à radiação.

Pour éviter tout			risque	d'exposition au rayon laser,
respectez	les	consignes		de réglage et d'utilisation des
commandes,	ainsi	que	les	procédures décrites.

Werden Steuerund Einstellelemente anders als hier festgesetzt verwendet, kann gefährliche Laserstrahlung auftreten.

L'utilizzo di		controlli,		regolazioni o	l'esecuzione di
procedure	diverse	da	quelle	specificate	possono
provocare	l'esposizione		a

El uso de controles o	ajustes	o	la ejecución de
procedimientos distintos	de los	aquí	especificados

20 IBM Mobile Systems - ThinkPad HMM Volume 3

puede provocar la exposición a radiaciones peligrosas.

Opening the CD-ROM drive could result in exposure to hazardous laser radiation. There are no serviceable parts

inside the CD-ROM driveDo not.						open.
Some CD-ROM drives contain						an embedded Class 3A or
Class 3B laser diode. Note							the		following.
DANGER:
Laser	radiation		when	open. Do	not	stare		into	the
beam,	do	not	view directly		with	optical		instruments,
and avoid direct exposure to					the	beam.
Radiação		por	raio	laser ao	abrir.	Não	olhe		fixo	no feixe
de luz,		não	olhe	diretamente	por	meio	de	instrumentos
óticos	e	evite exposição			direta	com	o	feixe de		luz.

Rayonnement laser si carter ouvert. Évitez

de

fixer le

faisceau,

de

le

regarder

directement

avec

des

instruments

optiques,

ou

de vous exposer au rayon.

Laserstrahlung

bei

geöffnetem Gerät.

Nicht

direkt

oder

über

optische

Instrumente

in

den

Laserstrahl

sehen

und

den

Strahlungsbereich

meiden.

Kinyitáskor

lézersugár

! Ne nézzen bele se szabad

szemmel, se optikai eszközökkel. Kerülje

a

sugárnyalábbal való

érintkezést

!

Aprendo

l'unità

vengono

emesse

radiazioni

laser. Non

fissare

il

fascio,

non

guardarlo

direttamente

con

strumenti ottici

e

evitare

l'esposizione

diretta

al fascio.

Radiación	láser	al abrir.		No	mire	fijamente	ni	examine
con instrumental		óptico	el	haz	de	luz.	Evite	la
exposición	directa	al	haz.

Introduction21

Screw	Size	Chart
Use	the	chart	below to match the size and shape of the
screws used in			the computer you are servicing.
A			Silver
B			Black
C			Silver
D			Brass
E			Black
F			Black
G			Black
H			Brass
J			Silver
K			Brass
L			Silver
M			Silver
N			Silver
P			Black
Q			Brass

22 IBM Mobile Systems - ThinkPad HMM Volume 3

Screw	Size	Chart	(continued):	Use the chart below
to	match	the	size and	shape of the screws used in the

computer you are servicing.

R	Brass
S	Black
T	Brass
U	Black
V	Brass
W	Black
X	Black
Y	Brass
Z	Brass
AA	Black
BB	Brass
CC	Brass
DD	Black
EE	Black
FF	Silver

Introduction23

Screw	Size	Chart	(continued):		Use the chart below
to	match	the	size	and	shape of the screws used in the
computer		you	are	servicing.
GG					Silver
HH					Brass
JJ					Silver
KK					Black
LL					Brass
MM					Brass
NN					Silver
PP					Brass
QQ					Brass
RR					Brass
SS					Brass
TT					Black
UU					Black
WW					Silver
XX					Black

24 IBM Mobile Systems - ThinkPad HMM Volume 3

ThinkPad 365				(2625)
Read	This			First. . . . . . . . . . . . . . . . . . 27
What			to		Do	First. . . . . . . . . . . . . . . .									28
General Checkout . . . . . . . . . .														. . . . . . . 30
Memory Checkout								. . . . . . . . .						.	.	. . . .	31
Keyboard/Auxiliary									Input		Device .Checkout. . .		33
TrackPoint					III			Checkout. . . . . . . . . . . .						34
Audio			Card			Checkout . . . . . . . . . . . . .									34
Diskette					Drive			Checkout. . . . . . . . . . . .						34
Power			Systems				Checkout . . . . . . . . . . .							35
Power			Management					Features . . . . . . . . .						38
Setup Utility							. . . . . . . . . .								. . . . . . . . 40
Symptom-to-FRU Index									. . . . . . . . .						. . . . . 41
Beep Symptoms . . . . . . . . . .														. . . . . . 41
No	Beep			Symptoms . . . . . . . . . . . . . .											43
Error Messages								. . . . . . . . .						. . . . . . . 44
LCD	Related					Symptoms . . . . . . . . . . . .								46
Keyboard/TrackPoint									Related			Symptoms. . . .	47
Indicator					Related					Symptoms. . . . . . . . . .				47
Power			Related				Symptoms . . . . . . . . . . .							47
Audio			Related				Symptoms . . . . . . . . . . .							48
Peripheral					Device				Related			Symptoms. . . . . .	48
Other Symptoms . . . . . . . . . .															. . . . . . 48
Intermittent Problems										. . . . . . .				. . . . . . 48
Undetermined Problems										. . . . . . .				. . . . . 49
Related			Service				Procedures. . . . . . . . . . . .							50
System			Status				Indicators. . . . . . . . . . . .							50
I/O		Status				Indicators. . . . . . . . . . . . . .									50
How		to		Run		Diagnostics. . . . . . . . . . . .								51
Diagnostic				Test			Programs. . . . . . . . . . . . .								52
Error Messages								. . . . . . . . .						. .		. . . . . 53
Return Codes							. . . . . . . . . .								. .	. . .	. . 53
Using	the			Diagnostics						Test		Programs. . . . . . .	54
Viewing				the		Test			Groups. . . . . . . . . . . .					55
Stopping				the		Tests. . . . . . . . . . . . . .								.	56
System			Key			Combinations . . . . . . . . . . .								57
External				Keyboard					Key Combinations. . . . . .				57
Product		Overview					(365C,			CD,	CS, CSD). . . . . .		58
Product Overview							(365E, ED) . . . . . . .							. . . . 59
FRU Removals					and			Replacements. . . . . . . . .						60
1010		Rear			Connector					Door. . . . . . . . . .				61
1015			Foot			. . . . . . . . . .								. . . . . . . . 61
1020		Battery Pack								. . . . . . . .				. . . . . . 62
1030		SO-DIMM/Memory Board										. . . . . .		.	.	63
1040		Hard			Disk		Drive. . . . . . . . . . . . .								64
1050		Keyboard Unit . . . . . . . .												. . . . . . 65
1055		Mylar Cover . . . . . . . . .												. .		. . . . 67
1060		Processor Card								. . . . . . . .					. . . . . 68
1065	LCD		Inverter					Card. . . . . . . . . . . .						69
1068		LCD Panel						. . . . . . . . . .							. . . . . 70
1070		LCD Assembly							. . . . . . . . .						. . . . 71
1080		Sound Card						. . . . . . . . .						.	.	. . . .	72
Copyright					IBM		Corp.			1997		25

1090	CD-ROM Drive				.	. . . . . . . . . . . . 73
1100		Diskette Drive				. . . . . . .	. . . . . . . 74
1110		DC/DC Card			.	. . . . . . .	. . . . . . 75
1120		Keyboard Card				. . . . . . . .		. . . . . 76
1130		LED/IR Board				. . . . . . .	. . . . . . . 77
1140		System Board				. . . . . . .	. . . . . . . 78
1150		PCMCIA Assembly				. . . . . . .	. . . . 80
Locations . . . .						. . . . . . . . . . . . . . . . . 81
System		Front		View. . . . . . . . . . . . . . .				81
System		Rear		View. . . . . . . . . . . . . . .				82
System		Board		Switch		Settings. . . . . . . . .	83
Memory		Board		Switch		Settings. . . . . . . . .	83
Parts	Listing		365C,		CD,	CS, CSD (2625). . . . .	84
Parts	Listing		365E,		ED (2625). . . . . . . . . .		. 87

26 IBM Mobile Systems - ThinkPad HMM Volume 3

Read

This

First

This

hardware

maintenance

manual

contains

information

for

the

IBM

ThinkPad

365

computer.

Ÿ

Be

extremely careful

during

write

operations

such

as copying, saving, or formatting.

Drives

in

the

computer that you are servicing might have been

rearranged

or

the

drive startup sequence might have

been altered. If you select an incorrect drive, data or

programs

can

be

written

over.

Ÿ

Use

only

the

correct

FRUs.

When

you

replace

a

FRU,

make

sure

the

model

of the machine and FRU

part number are correct by referring to the parts

listing.

Ÿ

FRUs

should

not

be

replaced

because

of

a

single,

un-reproducible

failure.

Single

failures

can

occur

from

a

variety

of

reasons

that

have

nothing to

do

with

a hardware defect such as electrostatic discharge or

software errors. FRU replacement should only be

considered

when

a

recurring

problem

exists.

The servicer must include the following in the parts

exchange

form

or

part

return

form

that

is

attached

to

the

returned

FRU.

1.

Name

and

phone

number

of

servicer.

2.

Date

of

service.

3.

Date

when

part

failed.

4.Date of purchase.

5.Failure symptoms, error codes appearing on

	display,	and	beep	symptoms.
6.	Procedure index and page number in which
	failing	FRU	was detected.
7.	Failing FRU name and part number.
8.	Machine type, model number, and serial number.
9.	Customer's name and			address.

ThinkPad 365 (2625)27

What to Do First

Before servicing the computer, determine whether or not the damage applies to the warranty by referring to the following:

		Warranty Note
During the warranty period, the customer									may be
responsible			for repair costs if the damage								was caused
by		misuse,	accident, modification,					unsuitable		physical
or		operating environment, or improper						maintenance			by
the customer.
The		following	list		provides	some	common	items that			are
not		covered	under		warranty	and	some	symptoms		that

could indicate that the system was subjected to stresses

beyond normal			use.
	Warranty	Coverage		Notes
The following		is	not	covered under warranty		:

ŸLCD panel cracked from being dropped or

applying too much force.

ŸScratched (cosmetic) parts.

ŸCracked or broken plastic parts, broken latches,

broken pins or connectors caused by excessive

force.

Ÿ

Damage

caused

by

liquid

spilled

onto

the

system.

Ÿ

Damage

caused

by

improperly

inserting

a

PCMCIA

card

or

installation

of

an

incompatible

card.

Ÿ

Damage

due

to

foreign

material

in

the

FDD

or

FDD

bay.

Ÿ

Damage

to

the

diskette drive caused by pressing

the diskette drive cover or inserting diskettes with

multiple

labels.

Ÿ

Diskette eject

button

was

bent

or

damaged.

ŸDamage to the CD-ROM drive caused by

excessive	force shocked	or dropped.
Ÿ Fuse blown	by attaching	non-supported devices.

ŸComputer or hard disk could not be used

because the password was forgotten.

If the following symptoms are present, they could indicate the damage was caused by non-warranted activity:

ŸMissing parts can be a symptom of unauthorized

service or modification.

ŸHDD spindles can become noisy if subjected to

excessive force or if dropped.

ŸErrors can be caused by exposure to strong magnetic fields.

28 IBM Mobile Systems - ThinkPad HMM Volume 3

How

to

Use

Error

Messages:

Use the error

codes or messages displayed on the screen to diagnose

failures. If

more

than

one error code is displayed, begin

the

diagnosis

with

the

first error code. The cause of the

first error code can result in false error codes being

displayed. If

no

error

code is displayed, see if the error

symptom is listed in the

“Symptom-to-FRU

Index”

on

page

41.

How to Diagnose Multiple FRUs:

When the

adapter

or

device

has

more

than one

FRU,

the error

code

could be caused by either FRU. Before replacing

multiple-FRUs, try removing

or

exchanging

each

FRU,

one

by one in the designated

sequence,

to

see

if

the

symptoms

change.

Passwords:

The

Passwords

are security

features

that

are used to protect the system and the hard disk data from

unauthorized		access. There are two	types	of	passwords:
Ÿ	User Password
Ÿ	Supervisor Password
How to Disable		the Passwords
	Important
This information is not available in			this	online	HMM
format. See your IBM Servicer or IBM				Authorized
Dealer for		this procedure.

ThinkPad 365 (2625)29

General Checkout

Use the following procedure as a guide for computer problems.

Note: The diagnostic tests are intendedonly IBMto test products. Non-IBM products, prototype cards, or modified

options

can

give

false

errors

and invalid

system

responses.

1. Obtain the failing symptoms in as much detail as

possible. Pay

close

attention to

the

error

messages

on

the

screen.

2. Verify the symptoms by attempting to recreate the

failure

by

running

the

diagnostic

test or

by

repeating

the

same

operation.

Note:

To

run the diagnostics, refer to “How to Run

Diagnostics” on

page 51.

3. Use

the

following

table to locate the description that

best matches the symptom, then go to the page

indicated.

Symptom

Go

to

AC Adapter

“Checking

the

AC

Adapter”

on

page 36.

Audio

Card

“Audio

Card

Checkout”

on

page

34.

Battery

Pack

“Checking

the

Battery

Pack”

on

page 37.

Configuration

is

not the

“How

to

Run

Diagnostics”

same as

the

installed

on

page 51.

devices.

Diskette

Drive

“Diskette

Drive

Checkout”

on

page 34.

Keyboard/Auxiliary Device“Keyboard/Auxiliary Input (Mouse/Pointing Device) Device Checkout” on

page 33.

Memory		related problems			“Memory Checkout”				on
					page	31.
Operational			Charging		“Checking		Operational
					Charging”		on	page 37.
Other		symptoms.			“Symptom-to-FRU Index” on
(Such		as	LCD	problems.)	page 41,		and	then use
					other	miscellaneous
					symptoms		tables.
Port	Replicator				“Port	Replicator			Power
					Overload” on			page 40.
POST	does		not	complete.	“Symptom-to-FRU Index” on
No beeps/error code arepage 41, and then use the
indicated.					No Beep		Symptoms		table.
POST beeps, but no error“Symptom-to-FRU Index” on
codes		are displayed.			page 41, and then use the
					Beep	Symptoms		table.

30 IBM Mobile Systems - ThinkPad HMM Volume 3

Symptom

Go

to

POST detected an error

and“Symptom-to-FRU Index” on

displayed numeric error

page 41, and then use the

codes.

Numeric

Error

Codes

table.

Power

failure.

“Power

Systems

Checkout”

(The

power

indicator

doeson

page 35.

not go on or stay on.)

Symptoms

cannot

be

Use

the

customer

reported

recreated.

symptoms

and

go

to

(Intermittent

problems.)

“Symptom-to-FRU Index” on

page

41.

TrackPoint

III

will not

work“TrackPoint

III

Checkout” on

page

34.

Memory Checkout

Depending on the model, the memory size that is available for customer use appears differently. See the following

table

for

the

available memory size

of

each card.

System

8MB

Optional

Extended

Switch

Board

Memory

SO-DIMM

Memory

Setting

Board

640KB

8MB

0

7168KB

1,2,3,4

OFF

4

11264KB

1,2,3,4

OFF

16

23552KB

2

ON

1,3,4

OFF

640KB

16MB

0

15360KB

1,2,3,4,

OFF

4

19456KB

1,2,3,4

OFF

16

31744KB

2

ON

1,3,4

OFF

Note:

Refer to

“Memory

Board

Switch

Settings”

on page 83

for

Memory

Board Switch

location.

Memory errors might stop system operations, show error messages on the screen, or hang the system. The computer detects memory parity errors but does not correct them.

Use the following procedure to isolate memory problems.

Memory Error Notes

Ÿ Ignore any references to parity errors.

ŸRemove any installed PCMCIA memory cards.

ThinkPad 365 (2625)31

1.

Make

sure

that any memory options are fully installed

into their

connectors. A

loose

connection

can

cause

an

error.

2.

Run

the

diagnostics. See

“How

to Run

Diagnostics”

on

page 51.

3.

If

memory

problems

occur

intermittently, use

the

loop

option

to

repeat

the

test.

4.

FRUs

should

not

be

replaced

because

of

a

single,

un-reproducible failure. Single

failures

can

occur

from

a variety of reasons that have nothing to do with a

hardware defect such as electrostatic discharge or

software errors. FRU replacement should only be

considered

when a recurring problems exits.

Flash Memory:

BIOS, system setup programs, and

some

diagnostic

utilities are stored in flash memory.

Flash

Memory

Update:

A flash memory update is

required

for

new

versions.

When Updating Flash Memory

During the flash doupdatenot :

Ÿ	Power-off the computer.
Ÿ	Disconnect	the AC Adapter.
Ÿ	Remove the	battery.
Ÿ	Lift the keyboard.

ŸPress any key.

		Attention
On		certain		systems,		updating flash	memory	can reset
all customer’s configuration settings to the default
values. The				following		steps bypass	the CONFIG.SYS
and AUTOEXEC.BAT files, so the customer’s
configuration setting are not reset to the default
values.
To	update the				flash	memory:
1. Power-off the computer.
2.		Install	the		battery pack and connect the AC Adapter.
3.		Insert	the		update diskette in drive A.
4.		Power-on		the	computer.

5.When the message “Starting PC DOS” appears, pressF5 to bypass the CONFIG.SYS and AUTOEXEC.BAT.

6.	At the prompt, CountryselectLanguage	then press
	Enter .
7.	Follow the instructions on the	screen.

32 IBM Mobile Systems - ThinkPad HMM Volume 3

Keyboard/Auxiliary Input Device Checkout

Disconnect the external keyboard and mouse, then try the internal keyboard. If the internal keyboard works correctly, replace the external keyboard or mouse.

If the internal keyboard does not work correctly or an unexpected character appears, make sure that the three flexible cables extending from the keyboard are correctly

seated	in	the connectors	on the keyboard card.
If the	keyboard cables		are seated correctly, run the
Keyboard Test		using the IBM ThinkPad 365 Advanced
Diagnostics		Diskette.

	Attention
To use the IBM ThinkPad 365 Advanced Diagnostics
Diskette,		you		must	have at least 500KB of free
memory. Be			sure to		read the “README.PO” file on
the IBM ThinkPad 365 Advanced Diagnostics Diskette
before using				the	following instructions.

1.Power-off the computer.

2.Insert the IBM ThinkPad 365 Advanced Diagnostics

	Diskette		into		drive A.
3.	Power-on the computer.
4.	Follow the			instructions			on the	screen and proceed to
	the Main Menu. Allow two to four minutes for the
	diagnostic			programs		to	load.
5.	At	the	Main Menu,			selectDiagnostics .
6.	At	the	Diagnostics			Menu,ModuleselectTests .
7.	At the Module Tests Menu,Keyboardselect.
8.	PressEnter			to	run	the	keyboard	tests.
9.	Do not press any key until prompted, then follow the
	instructions			on	the	screen.

10.When the tests are completed,Esc twicepress to return to the main menu.

11.SelectExi .

If	the	tests		detect	a	keyboard problem,	do	the following
one	at	a	time	to correct		the problem. Do	not	replace a
non-defective FRU.
Ÿ	Reseat		the	three	cables.
Ÿ	Replace		the	keyboard.
Ÿ	Replace		the	keyboard		card.

ŸReplace the system board.

The following auxiliary input devices are supported for this computer.

ŸSpace-saver keyboard

ŸMouse (PS/2 compatible)

If any of the above devices	do not work, reseat the cable
connector and repeat the failing operation. If the problem
ThinkPad	365 (2625)33

does not occur again, recheck the connector. If the problem remains, replace the device, and then the system board.

TrackPoint

III

Checkout

The TrackPoint automatically compensates to adjust the

pointer

sensor. During

this

process, the

pointer

moves on

the screen automatically for a short time. This self-acting

pointer movement can occur when a slight, steady

pressure is applied to the TrackPoint pointer while the

computer

is

powered

on

or

while the

system

is

running,

or

re-adjustment is required because the temperature has

exceeded its normal temperature range. This symptom

does not indicate a hardware

problem. No

service

actions

are

necessary

if the

pointer

movement

stops

in

a

short

period

of

time.

If

either

the

pointing

stick or the click button

will

not work,

do

the

following

actions one at a time to correct the

problem. Do

not

replace a non-defective FRU.

Ÿ

Reseat

the

three

keyboard

cables.

Ÿ

Replace

the

keyboard.

Ÿ

Replace

the

keyboard

card.

ŸReplace the system board.

Audio Card Checkout

Do the following to run the audio tests.

Ÿ Go

to a DOS full

screen,Ctrl +Altpress+F11

to

access

the

setup

utility.

Note:

The

setup

screen can only be accessed at a

full-screen

DOS

prompt.

Ÿ

Use

the

arrow

keys Audioto

select,then

use the

space

bar

to

toggle

the

audio

selection to enabled

(IRQ

7

).

Ÿ

Set

the

volume

control

to

mid

range.

Ÿ

Press Esc

thenF4

to

save and

reboot.

ŸListen for the sounds.

If the	audio card	does not produces any sound during
reboot, replace the Audio card. If the problem remains,
replace	the system	board.

Diskette

Drive

Checkout

Important

The

ThinkPad 365 does

not

support

both

an

internal

and

external

drive simultaneously.

Do the following to isolate the problem

to

a

controller,

drive,

or diskette. A

scratch,

write enabled,

non-defective

2HD

diskette

is required. Make sure that

the

diskette does

not have

more

than one label attached to

it.

Multiple

labels can cause damage to the drive

or

can

cause the

drive

to

fail.

34

IBM

Mobile

Systems

-

ThinkPad

HMM

Volume

3

Use the following information to test the diskette drive.

	Attention
To use the IBM ThinkPad 365 Advanced Diagnostics
Diskette,		you		must	have at least 500KB of free
memory. Be			sure to		read the “README.PO” file on
the IBM ThinkPad 365 Advanced Diagnostics Diskette
before using				the	following instructions.

1.Power-off the computer.

2.Insert the IBM ThinkPad 365 Advanced Diagnostics

	Diskette		into		drive		A.
3.	Power-on the computer.
4.	Follow the			instructions				on the	screen and proceed to
	the Main Menu. Allow two to four minutes for the
	diagnostic			programs			to	load.
5.	At	the	Main	Menu,		selectDiagnostics .
6.	At	the	Diagnostics				Menu,ModuleselectTests .
7.	At	the	Module		Tests		Menu,FloppyselectDisks .
8.	PressEnter		to		run	the		Floppy	Disks tests.
9.	Do not press any key until prompted, then follow the
	instructions			on	the		screen.

10.When the tests are completed,Esc twicepress to return to the main menu.

11.SelectExi .

If	the	drive	is	attached		through	a	Port	Replicator		and the
test detects errors, move the drive to the computer's
diskette		drive	connector		directly,		and	test	it	again.
Ÿ	If	an error		occurs	replace the			diskette		drive.
Ÿ	If	no errors occur, the drive is not defective. Go to
	“Port	Replicator Checkout” on page 597 to isolate the
	replicator		problem.
If	the	drive	is	attached		through	a	Diskette		Drive	Attachment
Unit, replace			the unit.

Power

Systems

Checkout

To verify

the

symptom

of

the

problem:

1.

Remove

the

port

replicator

(if attached),

reconnect the

AC Adapter, and replace the battery pack in the

computer.

If

the

computer

power

problem

remains,

do

the

following:

2. Remove the battery pack,

external

diskette

drive, and

hard

disk

drive.

3. Connect the AC Adapter and check that power is

supplied.

4.

Connect

one

at

a

time, the external

diskette

drive,

and

hard

disk

drive

and

check

that

power

is

supplied

from

each

power

source.

5. Disconnect the AC Adapter, remove the hard disk and

diskette

drive,

and

install

the

charged

battery pack;

then

check

that

power

is

supplied by battery

pack.

ThinkPad

365

(2625)35

6.	Remove the memory card and							PCMCIA cards	and
	check the power supply. Reinstall one at								a time	and
	check		the		power supply.
7.	Disconnect				the		AC Adapter. Remove the CD-ROM
	and	Audio			Card.		Reinstall one at a time,		connect	the
	AC	Adapter			and		check that power is supplied.
If	you		suspect			a	power problem, see the appropriate power
supply		check			listed		below.
Ÿ	“Checking			the		AC	Adapter.”
Ÿ	“Checking Operational Charging” on page 37.
Ÿ	“Checking			the		Battery Pack”		on page 37.

Ÿ“Port Replicator Power Overload” on page 40.

Checking the	AC	Adapter:	You are here
because	the	computer	fails only when the AC Adapter is
used.

ŸIf the power problem occurs only when the port

replicator	is	used,	replace the replicator.
Ÿ If the power-on indicator does				not	turn on,	check the
power cord	of	the	AC Adapter	for	correct	continuity
and installation.

ŸIf the operational charge does not work, go to “Checking Operational Charging” on page 37.

Use the following procedure to check the adapter.

1. Unplug the AC Adapter cable from the computer and

measure	the output	voltage at the plug of the AC
Adapter	cable. See	the following figure.

Pin	Voltage (V dc)
1	+10.0 to+16.0
2	Ground

Ÿ If the voltage is correct:

–Replace the DC/DC Card.

–If the problem remains, replace the system board.

ŸIf the problem still is not corrected, go to

		“Undetermined Problems” on page 49.
	Ÿ	If the		voltage	is	not	correct, go		to	the	next step.
2.	Unplug the AC Adapter cable from the								ac	power
	outlet		and	wait five minutes or longer					to	allow	the
	over		voltage	protection		circuit		to be	fully discharged
	and	initialized.
3.	Plug		the AC	Adapter cable into the ac					power		outlet.
36	IBM		Mobile	Systems	- ThinkPad		HMM	Volume	3

4. Measure the output voltage of the AC Adapter.

5.If the voltage is still not correct, replace the AC Adapter.

Note: An	audible	noise from the AC Adapter does not
always	indicate	a defective adapter.

Checking Operational Charging: To check

operational charging, use a discharged battery pack or a

battery pack that shows an			amber battery		status indicator
when it is	installed in	the	computer.
Perform operational charging. If the battery status
indicator turns orange and the battery				charging indicator
turns green	within two	minutes, replace		the	AC Adapter.

Checking the		Battery	Pack:	Battery charging will
not	start	until the Fuel-Gauge			shows	that less than 90% of
the	total	power	remains;	with	this	condition the battery

pack will charge to 100% of its capacity. This protects the battery pack from being over-charged or having a

shortened	life.
Before you perform the following		procedure, be sure you
have the	correct battery pack	for this model.

1.Power-off the computer.

2.Remove the battery pack and measure the voltage between battery terminals+) and2 −6).((See the

following figure.

3. If the voltage is+7.2lessV

thandc,

the

battery

pack

has been discharged or is defective. Recharge the

battery. If

the recharging

does

not work, go to Step 5

on page 38

to

check

the

charging

circuit.

If

the

voltage

is

still+7.2 lessV dcthanafter

the

recharging,

replace

the

battery.

4. If

the

voltage

is+7.more2V thandc,

measure

the

resistance between battery terminals 4 and 6. The

resistance

must be

4K

ohms

to

30K

ohms.

If

the

resistance

is

not

correct, replace

the battery

pack.

If the resistance is correct, replace the DC/DC card.

ThinkPad 365 (2625)37

5.	To	check	the charging circuit, do the following. Plug
	in	the AC	Adapter	with the	battery pack removed,
	then power-on the			computer.
6.	Measure the charging voltage between DC/DC
	terminals		2+) (and −6).(
7.	If	the	voltage is+9.less0V thendc, replace the
	DC/DC card. If the voltage				is+9.more0V dc,than
	the charging circuit is working correctly, replace the
	battery		pack.

Power Management Features

Five power management modes are provided by the computer to save power consumption and prolong battery power.

Standby Mode:			When	in	standby mode the following
occurs:
Ÿ	The	LCD	backlight	turns		off.
Ÿ	The	hard disk motor			stops.
Ÿ	The	CPU	clock is set to the lowest speed.
Events that			cause entering of standby mode:
Ÿ	Standby		requested	by		the(Fn +F3)n .key
Ÿ No		activity underauto-standby				enabled by the
	feature		utility.

Events that cause exiting or resuming of standby mode:

Ÿ (Resume) Any key operation.

ŸRing wakeup if enabled.

Suspend Mode:			When in suspend mode, the
following,		in	addition		to	the four actions of standby mode,
occur:
Ÿ	The	Audio	is	powered-off
Ÿ	The	CD-ROM	is	powered		off.
Ÿ	The	LCD power		is	powered-off.
Ÿ	The	hard	disk	is	powered-off.

ŸThe CPU is stopped.

When the computer is powered						with	AC power	and is	used
with	one	of the following IBM				PC cards, the		computer	does
not entersuspend or hibernatebymodeither the LCD
suspend switch or power-management timeout; the								PC
card and		application program			remain		active.
Ÿ	3270	Emulation	Credit	Card	Adapter
Ÿ	5250 Emulation		Credit	Card	Adapter
Ÿ	Token-Ring 16/4 Credit Card Adapter
Ÿ	Credit Card		Adapter	for	Ethernet

ŸIBM Modem

In	the	following		condition,	the	computer cannot enter the
suspend		mode.
Ÿ	While	the	communication link is running.
38	IBM	Mobile		Systems -	ThinkPad	HMM Volume 3

ŸActive interrupts (CD-ROM activity, etc.)

Events that cause entering of suspend mode:

Ÿ Suspend mode is requested by theFn +F4 Fn). key (

ŸThe LCD is closed.

ŸThe specified time has elapsed from the last operation with the keyboard, mouse, hard disk drive,

parallel		connector,	diskette	drive, or the AC Adapter is
plugged		in. The time is specifiedSuspend Timer by
in	the	setup program (if enabled).
Ÿ If	the	battery	condition	is low the system enters the
Safe Suspend mode			and the	configuration/setup

information is saved. If the battery gets to critical the

battery	power	indicator blinks (amber) and the system
goes into	the	Hibernation mode.

Events that cause exiting or resuming of suspend mode:

Ÿ	(Resume) The LCD is opened.
Ÿ	(Resume)	Real	time clock	alarm	signaled.
Ÿ	(Resume)	Ring	indicator	(RI)	signaled by serial or

PCMCIA device.

Ÿ(Resume) Any keyboard key is pressed.

Ÿ(Exit) Timer conditions are satisfied to enter hibernation mode.

Hibernation Mode: When in hibernation mode, the following occurs:

Ÿ The system	status,	RAM, VRAM, and setup data are
stored on	the hard	disk.

ŸThe system is powered-off.

When

the

computer

is powered with AC power and is used

with

one

of

the

following

IBM

PC cards, the computer does

not entersuspend or hibernatebymodeither the LCD

suspend

switch

or

power-management timeout; the PC

card

and

application

program

remain active.

Ÿ

PCMCIA

Data/FAX

Modem

Ÿ

High

Speed

PCMCIA

Data/FAX

Modem

Ÿ

3270

Emulation

Credit

Card

Adapter

Ÿ

5250

Emulation

Credit

Card

Adapter

Ÿ

Token-Ring

16/4

Credit

Card

Adapter

ŸCredit Card Adapter for Ethernet

ThinkPad 365 (2625)39

Events that cause entering of hibernation mode:

Ÿ	The hibernation mode is requested	by	the		Fn key
	(Fn +F12 ).
Ÿ	Timer conditions are satisfied in	suspend		mode.
Ÿ	Critical low battery condition. The	system		first goes
	into safe suspend mode, then when the battery
	reaches critical the system goes	into	the		hibernation
	mode.

Event that causes exiting of hibernation mode.

ŸThe power-on switch is operated.

When

power

is

turned on,

the hibernation

history

of

the

boot

record

on the hard disk is recognized and system

status

is

restored

from

the

hard disk to

resume

operation.

Doze Mode:

In

the

Doze mode,

the

system

slows

down the central processing unit

and

the

system

uses

less

power. Enable

the doze mode in the setup program.

Exiting the doze mode is instantaneous by pressing any

keyboard

key.

Safe Suspend:

Saves the computer state, then

enters

the

suspend

mode.

Port

Replicator

Power Overload:

If power shut

downs occur intermittently when using a port replicator,

suspect an over-current problem. Some devices use more

power; if the maximum usage of each device occurs

simultaneously, the total current will exceed the limit,

thereby causing

a

power

shut down. Isolate this problem

by removing

one

of

the

devices,

and

use

the

computer

under

the

same

condition

to

see

whether

a

power

shut

down occurs. Do this procedure for all devices, then

determine

the cause.

Setup Utility

Note

The Setup Utility is ROM-resident and can only be started at a full-screen DOS prompt.

Do the

following to run

the

Setup

Utility.

1.

Go

to

a

DOS

full

screen.

2.

PressCtrl +Alt +F11.

3.

Follow

the

instructions

on

the

screen.

Note

Setup UtilityFn +6 ,

When exiting

the

pressusing

Ctrl +Alt

together

after

returning

to the

full-screen

DOS. This

ensure

the keyboard controller

is in the

proper

reset

state.

40 IBM Mobile Systems - ThinkPad HMM Volume 3

Symptom-to-FRU Index

The Symptom-to-FRU Index lists error symptoms and
possible			causes. The		most likely cause is listed first.
Always begin with “General Checkout” on page 30.								This
index		can	also	be used to		help you decide		which FRUs to
have		available		when	servicing	a	computer.
If	you		are	unable	to correct the problem using this index,
go	to	“Undetermined			Problems”	on	page 49.

Notes

ŸIf you have both an error message and an incorrect audio response, diagnose the error message first.

ŸCheck all power supply voltages before you replace the system board. (See “Power Systems Checkout” on page 35.)

Beep Symptoms

Beeps symptoms are short tones or a series of short tones separated by pauses (intervals without sound). See the following examples.

Beep	Symptom							FRU/Action
1-1-3								1.Run Setup
CMOS	write/read				test		in	2.	System Board
progress			or	failure.
1-1-4								1.System Board
ROM	BIOS		check		error.
1-2-1								1.System Board
Programmable				interval		timer
0 test in			progress			or		failure.
1-2-2								1.System Board
DMA channel 0 address and
count		register			test		in
progress			or	failure.
1-2-3								1.System Board
DMA	page		register
write/read				in	progress			or
failure.
1-3-1								1.System Board
RAM	refresh			verification				test
in	progress			or	failure.
1-3-3								1. RAM	Memory Board
First		64K	RAM	chip		or	data2.		System Board
line	failure, multi-bit.
1-4-2								1.System Board
Parity		failure			first		64K RAM.
1-4-3								1.System Board
Fail-safe timer failure (only
used		by	EISA		BIOS).

ThinkPad 365 (2625)41

Beep	Symptom							FRU/Action
1-4-4									1.System Board
Software			NMI		port		failure
(only		used		by		EISA		BIOS).
2-1-1,		2-1-2,			2-1-3			1. RAM		Memory	Board
2-1-4,		2-2-1,		2-2-2					2.	System Board
2-2-3, 2-2-4, 2-3-1
2-3-2, 2-3-4, 2-4-1
2-4-2, 2-4-3, 2-4-4
First		64K	RAM		chip		or data
line	failure				xon.	bit
3-1-2									1.System Board
Master DMA register test in
progress			or		failure.
3-1-3									1.System Board
Master		interrupt				mask
register test in progress or
failure.
3-1-4									1.System Board
Slave		interrupt mask
register test in progress or
failure.
3-2-4									1.System Board
Keyboard controller test in2. Keyboard
progress			or		failure.				3.	Keyboard Card
3-3-1									1.System Board
Slave DMA register test in
progress			or		failure.
3-3-4									1.System Board
Screen		memory			test		in
progress			or		failure.
3-4-1									1.System Board
Screen		initialization						in
progress.
3-4-2									1.System Board
Screen		retrace				test		in
progress.
4-2-1									1.System Board
Timer-tick interrupt test in
progress			or		failure.
4-2-2									1.System Board
Shutdown			test		in	progress			2.	Processor Card
or	failure.
4-2-3									1.System Board
Gate		A20	failure.
4-2-4									1.System Board
Unexpected					interrupt			in	2.	Processor Card
protected				mode.
4-3-1								1. RAM		Memory	Board
RAM	test		of		memory		above		2.	SO DIMM
64K	in	progress				or	failure.3.			System Board

42 IBM Mobile Systems - ThinkPad HMM Volume 3

Beep	Symptom							FRU/Action
4-3-2								1.System Board
Programmable				interval		timer
channel		2	test in			progress
or	failure.
4-3-4								1.System Board
Real-time clock test in
progress			or	failure.
4-4-1								1.System Board
Serial		port		test	in	progress
or	failure.
4-4-2								1.System Board
Parallel		port		test	in		progress
or	failure.
4-4-3								1.Processor Card
Math	coprocessor				test		in	2. System Board
progress			or	failure.

No	Beep	Symptoms
Symptom/Error					FRU/Action
No beep during POST but					1.System Board
computer		works	correctly.		2.	Audio card
No	beep	during	POST and		1.See “Undetermined
no	display.				Problems”		on
					page	49 .
					2.	System Board
					3.	Audio card
					4.	Memory
					5. See		“Power	Systems
					Checkout” on			page 35.

ThinkPad 365 (2625)43

Error Messages

Error

Message/Symptom

FRU/Action

Bus

Timeout

NMI,

1.System Board

Slot n .

Type

(S)hut

off

NMI,

(R)eboot,

other

keys

to

continue.

Configuration

for

slot

n .

1. Run

Setup

Utility.

Diskette

drive

failure

1. See

“Diskette

Drive

Checkout”

on

page

34 .

Diskette

drive

x

failure

1. See

“Diskette

Drive

wherex=0

orx=1.

Checkout”

on

page

34 .

Diskette

read

failure

-

1. Replace

diskette

with

press

F1

to

retry

boot

(or

a

bootable

diskette

may

also

say F2

for

Setup

and

retry .

Utility).

Gate

A20

failure

1.System Board

Hard

disk

configuration

1. Correct

the

hard

disk

error

configuration

.

Hard

disk

controller

1.System Board

failure

Hard

Disk

failure

1.Hard Disk

Hard

disk

failure

-

press

1. Check

drive

selection

F1

to

retry

boot

(or

may

in

setup .

also

say

press

F2

for

2.

Hard Disk.

Setup

Utility

).

F2

to

enter

ROM-based

1. Run

Setup

Utility .

SETUP

2.

Verify Configuration.

ID

information

mismatch

1. Run

Setup

Utility .

for

slot n

Invalid

configuration

1. Run

Setup

Utility .

information

.

Internal

cache

test

failed

-

1.Processor Card

cache

is

disabled .

2.

System Board

Keyboard

clock

line

1. Keyboard

cable

and

failure .

Keyboard

connection

.

2.

System Board

Keyboard

controller

1.System Board

failure .

Keyboard

data

line

failure

.

1.System Board

Keyboard

is

locked

.

1. Unlock

the

Keyboard

Keyboard

stuck

key

1. Locate

and

fix.

failure .

2. Keyboard

cable and

Keyboard

connection.

3.

System Board

Memory

failure

at

1. RAM

Memory

Board

hex-value, read

hex-value,

expecting

hex-value.

44 IBM Mobile Systems - ThinkPad HMM Volume 3

Error

Message/Symptom

FRU/Action

No

boot

device

available

-

1.Diskette

press

F1

to

reboot

or

2.

Diskette Drive

press

F2

for

Setup

Utility .

3.

Hard Disk

No

boot

sector on

hard

1. Format

the

C

drive.

disk.

Press

F1

to

reboot

or

F2

for

Setup

Utility .

No

fail

safe

timer

NMI

1.System Board

No

software

port

NMI

1.System Board

No

timer

tick

interrupt

1.System Board

Not

a

boot

diskette

-

press

1. Replace

diskette

with

F1

to

reboot

or

F2

for

a

bootable

diskette.

Setup

Utility

Pointer

device

failure

1.Check cable

connections

2.

Keyboard (TrackPoint)

3.

External Mouse

Real

time

clock

failure

1. Run

Setup

Utility

Shutdown

failure

1.Power-off, Power-on,

Retry

2.

System Board

Time

of

day

not

set

-

run

1. Run

Setup

Utility

SETUP

program

Timer

2

failure

1.System Board

Unexpected

HW

interrupt

1.System Board

at

address

Type

(R)eboot,

other

keys

to

continue.

Hardware

problem. Not

displayed

if

the

extended

interrupt

handler

is not

enabled.

Unexpected

interrupt

in

1.System Board

protected

mode

Unexpected

SW

interrupt

1.System Board

at

address

Type

(R)eboot,

other

keys

to

continue.

Error(s)

in

software

program. Not

displayed

if

the

extended

interrupt

handler is

not

enabled.

Unexpected

type

02

1.System Board

interrupt

at

xxxxxh

Type

(S)hut

off

NMI,

(R)eboot,

other

keys

to

continue.

Parity

error

occurred. Cause

undetermined.

Unresolved

BUS

Timeout

1.System Board

NMI,

Type

(S)hut

off

NMI, 2.

Processor Card

(R)eboot,

other

keys

to

continue.

Parity error

occurred.

Cause

undetermined.

ThinkPad

365

(2625)45

Error Message/Symptom					FRU/Action
Unresolved	memory		parity		1.System Board
error					2.	SO-DIMM
Type	(S)hut		off	NMI,	3.	Optional Memory
(R)eboot,			other	keys	to	(8MB or 16MB Board)
continue.		Parity error
occurred.			Cause
undetermined.
xxxxxh	Option		ROM		1.Power-off, Power-on,
checksum	failure	where			Retry
xxxxxh is the starting					2.	Peripheral Card
address	of the		option
ROM

LCD

Related

Symptoms

Important

The

TFT

LCD

of

the notebook computers contain

over

921 000

thin

film

transistors

(TFTs). A

small

number

of

missing,

discolored

or

lighted dots

(on

all the time)

is characteristic of TFT LCD technology. Excessive

pixel problems can cause viewing concerns. The LCD