Contents

Preface . . . . . . . . . . . . . . . iii

ThinkPad R30/R31 Hardware Maintenance Manual		1
Introduction	.	1
Important Service Information	.	1
Drive and Diskette Compatibility Matrix . . . .	.	2
Safety Notices (Multi-lingual Translations) . . .	.	3
Safety Information	.	13
Laser Compliance Statement	.	17
General Descriptions	.	20
Read this first	.	21
What to do first	.	21
FRU replacement notices	.	23
LCD replacement notice	.	23
Screw notices	.	23
System board/LCD/Inverter replacement notice		24
Related service information	.	26
Power button as reset switch	.	26
Running a low-level format	.	26
Service Web site	.	26
Passwords . . . . . . . . . . . . . 26
Power management features	.	28
Fn key combinations	.	30
Product recovery program	.	30
Flash BIOS	.	33
Checkout guide	.	34
Testing the computer	.	34
Related service information	.	35
Power systems checkout	.	36
Symptom-to-FRU Index	.	40
Numeric Error Codes and Messages . . . .	.	40
Beep Symptoms	.	43
LCD-Related Symptoms	.	44
Keyboard/TrackPoint-Related Symptoms . . .	.	45
Indicator-Related Symptoms	.	45
Power-Related Symptoms	.	45
Memory-Related Symptom	.	46
Audio-Related Symptoms	.	46
PC Card (PCMCIA)-Related Symptoms . . .	. 46
Power Management-Related Symptoms . . .	. 47
Peripheral-Device-Related Symptoms . . . .	.	47
Modem-Related Symptom	.	48
Operating System-Related Symptom . . . .	.	48
Intermittent Problems	.	48
Undetermined Problems	.	49
ThinkPad R30	.	50
Product overview	.	51
FRU removals and replacements	.	56
Locations	.	84
Parts list	.	87

IBM R31, R30 manual Contents