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IBM ThinkPad 390E Hardware Maintenance Manual

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The IBM Mobile Systems ThinkPad 390E (2626) Hardware Maintenance Manual is IBM's service manual for the ThinkPad 390E, form number S37L-5153-01, part number 00N5907, dated March 1999 with the edition notice "First Edition (March 1999)", 130 pages. The earlier 390 and the i Series 1700 are in IBM ThinkPad 390 i Series 1700 (2626/2627) HMM.

Contents

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Page numbers are the manual's own.

  • Introduction (pp. 1-16): error messages, drive and diskette compatibility matrix (p. 3), multilingual safety notices (p. 4), safety information (p. 11), laser compliance statement (p. 16).
  • Read this first (p. 19), including how to disable the password (p. 20); product overview, Fn keys and status indicators (pp. 22-25).
  • Checkout guide (p. 27): audio, diskette drive, CD-ROM, fan, keyboard, memory, modem, power system (p. 33) and TrackPoint; power management features (p. 36).
  • Symptom-to-FRU index (p. 39).
  • CE utility program diskette (p. 48): LCD panel ID, thermal sensor, RFID data and UUID; running the diagnostics with PC-Doctor (pp. 50-59).
  • FRU removals and replacements (pp. 60-106): battery, drives, combo bay, modem card, backup battery (p. 69), keyboard, CPU board, system board (p. 84), and the LCD parts for the 12.1-, 13.3- and 14.1-inch panels; switch location (p. 106).
  • System unit parts listing (p. 107), LCD unit parts listings by panel size (p. 112) and service tools (p. 118). Notices (p. 119).

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 system checkout (pp. 33-35) gives the AC adapter output as +15.5 to +17.0 V dc at pin 1, and treats a battery as discharged below 10.6 V (lithium-ion) or 9.6 V (NiMH), measured between terminals 1 and 7. There is no backup battery voltage check.

Download: IBM ThinkPad 390E Hardware Maintenance Manual.pdf

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