IBM ThinkPad R50e Series Hardware Maintenance Manual
The ThinkPad Computer Hardware Maintenance Manual of April 2008 covers the ThinkPad R50e, R51e and R52, part number 39T2462_01, Second Edition (April 2008), 272 pages. The title page lists the ThinkPad R50e series (MT 1834, 1842, 2670), R51e series (MT 1843, 1844, 1845) and R52 series (MT 1846, 1847, 1848, 1849, 1850, 1858, 1859, 1860, 1861, 1862, 1863, 1870), and the ThinkPad Dock II (MT 2877). The pages carry "© Lenovo 2005. Portions © IBM Corp. 2005". The R50, R50p and R51 have their own manual, IBM ThinkPad R51 Series Hardware Maintenance Manual.
Contents
[edit | edit source]Page numbers are the manual's own.
- Introduction (pp. 3-26, including a strategy for replacing FRUs for CTO, CMV and GAV products, p. 4): strategy for replacing FRUs, error messages, diskette compatibility matrix, multilingual safety notices, safety information and the laser compliance statement.
- General descriptions (pp. 29-44): read this first, related service information including restoring the pre-installed system, passwords (p. 32) and power management (p. 35); checkout guide (p. 38) with PC-Doctor and the power system checkout (p. 41).
- ThinkPad R50e, R51e and R52 Series, from p. 45: product overview and specifications (p. 47), status indicators, FRU tests, Fn key combinations; symptom-to-FRU index (p. 62).
- FRU replacement notices (p. 71): screw notices and retaining serial numbers.
- Removing and replacing a FRU (pp. 75-152): numbered procedures from 1010 Battery pack (p. 76) to 3020 ThinkPad Dock II top cover (p. 150), with separate steps for the R50e and R52 where they differ.
- Locations (p. 153, with separate views for the R50e and the R52) and parts list (p. 160, with LCD FRUs, AC adapters, keyboards and recovery CDs).
- Notices (p. 263).
What this manual does not contain
[edit | edit source]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
[edit | edit source]The power system checkout (pp. 41-44) gives these limits: AC adapter output +15.5 to +17.0 V dc at pin 1; battery pack +0 to +12.6 V dc between terminals 1 and 5, discharged if below +11.0 V dc, and 4 to 30 kΩ between terminals 4 and 5 if above it; backup battery +2.5 to +3.2 V dc on the red wire.
Download: IBM ThinkPad R50e Series Hardware Maintenance Manual.pdf