IBM Mobile Systems Hardware Maintenance Manual Volume 1
The IBM Mobile Systems Hardware Maintenance Manual, Volume 1: Laptop, Notebook, Portable and ThinkPad Computers is IBM's 503-page service manual for its early portables, form number S82G-1501-01, part number 30H2356, Second Edition (May 1995). It replaced the earlier IBM Laptop, Notebook, and Portable Computers Vol. 1 (82G1501).
The title page lists the machines it supports: the Laptop L40 SX (8543), Laptop CL57 SX (8554), Notebook N45SL (2614), Notebook N51 SX/SLC (8551), Portable P70/P75 (8573), ThinkPad 300 (2615), ThinkPad 350 and PS/Note 425 (2618), ThinkPad 500 (2603), ThinkPad 510 (2604), ThinkPad 710T (2523), the Expansion Unit (3550) and Dock Stations I (3545) and II (3546). The later ThinkPads (340, 355, 360, 370, 700, 701, 720, 750, 755) are in Volume 2.
Contents
[edit | edit source]The Introduction (pp. 1-20) applies to the whole volume. It has a table of every portable by type-model with processor, memory and disk (pp. 2-3), the FRU replacement strategy (p. 4), the hard disk replacement strategy and how to read POST error messages (p. 5), the diskette drive compatibility matrix (p. 6), multilingual safety notices (p. 7), safety information including the safety inspection guide and ESD handling (pp. 14-18), and a screw size chart that identifies each screw by letter and colour (pp. 19-20).
Each machine then has its own section in the same order: General Checkout, Symptom-to-FRU Index, Related Service Procedures, Product Overview, FRU Removals and Replacements, Locations and Parts Listing.
| Section | Starts on page |
|---|---|
| Model L40 SX (8543) | 23 |
| Model N45SL (2614) | 47 |
| Model N51 (8551) | 73 |
| Model CL57 (8554) | 111 |
| Model P70 and P75 (8573) | 145 |
| ThinkPad 300 (2615) | 183 |
| ThinkPad 350, PS/Note 425 (2618) | 205 |
| ThinkPad 500 (2603) | 231 |
| ThinkPad 510 (2604) | 257 |
| ThinkPad 710T (2523) | 285 |
| Expansion Unit (3550) | 315 |
| Dock I (3545) | 339 |
| Dock II (3546) | 389 |
| Common Devices Checkout (external diskette drive, display, keyboard, fax/modem, printer, port replicator, TrackPoint II, TV tuner) | 463 |
| Common Parts Listing | 477 |
| Miscellaneous Information (acronyms, problem determination tips, US and Canada phone numbers) | 483 |
| Notices | 489 |
The front matter lists the separate Hardware Maintenance Reference and Service pamphlets for each of these machines, with part and form numbers, and the reference and diagnostic diskettes (pp. iv-v).
What this manual does not contain
[edit | edit source]The manual works at FRU level. The parts listings give IBM part numbers for boards, drives, covers, cables and screws, and a system board is a single part. There are no schematics and no component values; the only capacitor mentioned is the "bulging capacitor" hazard in the safety inspection guide. The diagnostic diskettes it refers to are not part of the scan.
What it settles
[edit | edit source]The power system checkouts give measured limits. For the L40 SX (pp. 29-31): AC adapter output +14.3 to +15.8 V dc; rechargeable battery +8.5 to +12.6 V dc, with 4 to 30 kΩ between the thermistor terminal and ground; backup battery +2.8 to +3.2 V dc; standby battery +3.0 to +4.5 V dc after a 48-hour charge. For the P70 and P75 (p. 149), which run from mains, the supply limits are +4.8 to +5.2 V and +11.5 to +12.6 V.
The FRU replacement strategy (p. 4) is IBM's own rule for all of these machines: if a replacement FRU does not cure the fault, refit the original before going on; where a machine has both a processor board and a system board, put the first board back before trying the other; and where an adapter is made of several FRUs, remove them one at a time and replace only the one that changes the symptom.
The P70 386 and P75 486 also have their own pamphlets, listed in this volume's related publications: the P70 386 HMR (64F3994) and HMS (15F2198), and for the P75 the HMR 84F8525 and HMS 84F7593. The N45SL has IBM PS2 N45 SL Hardware Maintenance Reference (42G0485).
Download: IBM Mobile Systems Hardware Maintenance Manual Volume 1.pdf
Related pages
[edit | edit source]- IBM ThinkPad HMM Volume 2 (340/355/360/370/700/701/720/750/755)
- IBM ThinkPad HMM Volume 3 (365C/CD/CS/CSD)
- IBM ThinkPad HMM Volume 4 (380/385/560/560E/760)
- IBM PS2 Model P75 486 Quick Reference
- 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