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IBM ThinkPad HMM Volume 2 (340/355/360/370/700/701/720/750/755)

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The IBM Mobile Systems Hardware Maintenance Manual, Volume 2: ThinkPad Computers is IBM's service manual for its 1993-1995 ThinkPad models, form number S82G-1502-03, part number 30H2357, Fourth Edition (April 1995), 508 pages. The title page lists the ThinkPad 340x (2610), 355x (2619), 360x (2620), 370x (9545), 700x (9552), 701x (2630), 720x (9552), 750x (9545) and 755x (9545).

Contents

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Page numbers are the manual's own.

  • Introduction (pp. 1-21): portable computer descriptions (p. 2), drive and diskette compatibility matrix (p. 4), important service information (p. 5), multilingual safety notices (p. 7), safety information (p. 14), laser compliance statement (p. 19), screw size chart (p. 20).
  • ThinkPad 340x (2610), from p. 23: general checkout (25), symptom-to-FRU index (34), related service procedures (43), product overview (48), FRU removals (49), locations (59), parts listing (62).
  • ThinkPad 700, 700C, 720, 720C (9552), from p. 67: general checkout (68), symptom-to-FRU index (82), FRU removals (104), locations (110), parts listings for the 700 (115) and the 720/720C (118).
  • ThinkPad 701C/701CS (2630), from p. 125: checkout guide (127), symptom-to-FRU index (141), FRU removals (161), locations (181), parts listing (190).
  • ThinkPad 355x, 360x, 370C, 750x, 755C, 755Cs, from p. 195: general checkout (200), symptom-to-FRU index (216), FRU removals for the 355x and 360x (237) and for the 370C, 750x, 755C and 755Cs (261), locations (289), parts listing (296).
  • ThinkPad 755CD, 755CDV (9545), from p. 315: general checkout (317), symptom-to-FRU index (331), FRU removals (350), parts listing (383).
  • ThinkPad 755CE, 755CSE, 755CV, 755CX (9545), from p. 391: general checkout (393), symptom-to-FRU index (408), FRU removals (426), parts listing (460).
  • Common devices checkout (p. 469), common parts listing (p. 483), miscellaneous information (p. 489) with problem determination tips (p. 493) and notices (p. 497).

What this manual does not contain

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The manual works at FRU level. It has no schematics and no component values, and a system board is a single part number. The only capacitor it mentions is the "bulging capacitor" hazard in the safety inspection guide.

What it settles

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The ThinkPad 340 checkout (pp. 29-33) gives these limits: AC adapter output +17.1 to +18.9 V dc for the 30 W and 40 W adapters and +15.5 to +17.0 V dc for the 35 W adapter; battery pack discharged if below +10.0 V dc, and 4 to 30 kΩ between terminals 3 and 4 if above +8.0 V dc; backup battery +2.9 to +3.3 V dc on the red wire. Battery Refurbishment cites these figures.

Download: IBM ThinkPad 340 355 360 370 700 701 720 750 755 HMM Vol 2.pdf

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