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IBM ThinkPad 770 770E 770ED 770X 770Z Hardware Maintenance Manual

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The IBM Mobile Systems ThinkPad 770 (9548), 770E/ED (9548), 770X (9549), 770Z (9549) Hardware Maintenance Manual is IBM's service manual for the ThinkPad 770 family, form number S10L-9621-02, part number 37L5152, Third Edition (January 1999), 136 pages. The original 770 also has a section in Volume 4 (September 1997).

Contents

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Page numbers are the manual's own.

  • General descriptions (pp. 1-46): introduction, drive and diskette compatibility matrix (p. 3), multilingual safety notices, safety information (p. 10), laser compliance statement (p. 14); read this first (p. 16); FRU replacement notices (p. 19); related service information (p. 23) including passwords (p. 24) and power management; checkout guide (p. 30) with the power systems checkout (p. 36); running the diagnostics (p. 40).
  • ThinkPad 770, 770E, 770X and 770Z, from p. 47: product overview (p. 49), status indicators, symptom-to-FRU index (p. 52) including DVD-related symptoms (p. 59).
  • FRU removals and replacements (pp. 68-113): from 1010 Battery pack (p. 70), 1020 UltraBay II device or second battery pack and 1050 Backup battery and DIMM (p. 75) to 1100 Standby battery (p. 88), 1150 DC-DC card (p. 94) and the LCD procedures (pp. 106-112).
  • Locations (p. 114), including the password jumper (p. 116).
  • Parts list (p. 117): LCD FRUs (p. 122), keyboard unit (p. 124), common parts (p. 127). Notices (p. 129).

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 power systems checkout (pp. 36-38) gives these limits: AC adapter output +15.5 to +17.0 V dc at pin 1; battery pack discharged if below +11.0 V dc between terminals 1 and 4, and 4 to 30 kΩ between terminals 3 and 4 if above it; backup battery +2.5 to +3.2 V dc on the red wire. The 770 also has a separate standby battery (FRU 1100, p. 88).

Download: IBM ThinkPad 770 770E 770ED 770X 770Z Hardware Maintenance Manual.pdf

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