IBM ThinkPad X30 X31 Service Manual

The IBM Mobile Systems ThinkPad Computer Hardware Maintenance Manual of January 2003 is IBM's hardware maintenance manual for the ThinkPad X30 and X31, part number 92P1288, First Edition (January 2003). The PDF has 176 pages: four front pages, 171 numbered pages and the back cover, which carries the part number.

The title page lists the products supported: ThinkPad X30 and X31 (machine types 2672 and 2673), ThinkPad Dock (machine type 2631) and ThinkPad Dock II (machine type 2877). The model matrix (pp. 146-147) has both X30 and X31 models under both machine types. IBM used the same cover title for all its ThinkPad manuals of this period, so the "This manual supports" list is what identifies the book.

Contents

Page numbers are the manual's own.

• About this manual (p. 1).
• Introduction (pp. 3-26): strategy for replacing FRUs and how to use error messages (pp. 3-4); diskette compatibility matrix (p. 4); safety notices in English, French, German, Hebrew, Italian and Spanish (pp. 4-15); general and electrical safety, safety inspection guide, handling of electrostatic discharge-sensitive devices, grounding requirements (pp. 16-20); laser compliance statement (p. 21).
• General descriptions (pp. 25-44): what to do first (p. 25); service web site, restoring the preloaded system on the X30 (p. 27) and recovering the hard disk on the X31 (p. 30); passwords (p. 32); power management (p. 35); checkout guide, testing the computer and PC-Doctor (pp. 38-41); power system checkout (pp. 42-44).
• ThinkPad X30, X31 (from p. 45): specifications (p. 47), status indicators for the X30 (p. 50) and X31 (p. 53), FRU tests (p. 55), Fn key combinations (p. 56); symptom-to-FRU index with numeric error codes, error messages, beep and no-beep symptoms, LCD-related, intermittent and undetermined problems (pp. 59-66); FRU replacement notices, covering screw notices and retaining serial numbers (pp. 67-68).
• Removing and replacing a FRU (pp. 70-137): numbered procedures 1010 Battery pack to 1150 System board and base cover, 2010 LCD front bezel to 2030 LCD panel, 3010-3020 for the ThinkPad Dock and 4010-4020 for the ThinkPad Dock II. The backup battery is 1050 (p. 76).
• Locations (pp. 138-145): front, rear and bottom views for the X30 and X31, and the UltraBase X3 (p. 144).
• Parts list (pp. 146-169): model matrix (p. 146), overall FRU list (p. 148), LCD FRUs (p. 157), keyboards (p. 159), recovery CDs (p. 160), miscellaneous parts (p. 164), optional FRUs (p. 166), common parts list (p. 168).
• Notices and trademarks (p. 170).

What this manual does not contain

The manual works at FRU level. There are no schematics, no board layouts and no component values, and the system board is a single part number. The only capacitor mentioned is the "bulging capacitor" hazard in the safety inspection guide (p. 19).

What it settles

The power system checkout (pp. 42-44) gives these limits:

Power system checkout, ThinkPad X30 and X31 (pp. 42-44)

Item	Measured at	Correct reading
AC adapter	Pin 1 to pin 2 (ground) of the adapter plug	+15.5 to +17.0 V dc
Battery pack	Terminal 1 (+) to terminal 5 (−)	+0 to +12.6 V dc; discharged if below +11.0 V
Battery pack, above +11.0 V	Resistance between terminals 4 and 5	4 to 30 kΩ
Backup battery	Red wire (+) to black wire	+2.5 to +3.2 V dc

The password section (pp. 32-35) sets out what IBM would and would not reset. A forgotten power-on password can be removed with the supervisor password (through the F1 prompt on the X30, the Access IBM button on the X31), or, where no supervisor password is set, by removing the battery pack and the backup battery and powering on until POST ends. A forgotten supervisor password has no reset procedure and the system board must be replaced. A forgotten user hard-disk password can be bypassed only with the master hard-disk password; without it IBM offers no reset or data recovery.

The screw notices (p. 67) specify nylon-coated screws, used only once, tightened 90 degrees past contact for plastic to plastic and 180 degrees for logic card to plastic, or to the torque in each removal step; the screw kit is P/N 27L6751 (p. 164). After a system board replacement the serial number must be written back with the ThinkPad Hardware Maintenance Diskette version 1.69 (p. 68).

The later IBM ThinkPad X30 X31 X32 Hardware Maintenance Manual (July 2005, part number 39T6189) covers the same machines and docks and adds the X32 (machine types 2884 and 2885). For an X32, use that manual.

Download: IBM ThinkPad X30 X31 Service Manual.pdf

Related pages

• IBM ThinkPad X30 X31 X32 Hardware Maintenance Manual, the July 2005 manual that adds the X32
• IBM ThinkPad X20 X21 X22 X23 X24 Hardware Maintenance Manual and IBM ThinkPad X40 Hardware Maintenance Manual, for the X series before and after
• IBM ThinkPad Notebooks - Personal Systems Reference and IBM ThinkPad Notebooks (A/G/T/X) - Personal Systems Reference, for identifying a machine from its type-model number