IBM Thinkpad R50e free download

File name IBMR50e ManualBook.pdf

ThinkPad Computer Hardware Maintenance Manual April 2008 This manual supports: ThinkPad R50e Series (MT 1834, 1842, 2670) ThinkPad R51e Series (MT 1843, 1844, 1845) ThinkPad R52 Series (MT 1846, 1847, 1848, 1849, 1850, 1858, 1859, 1860, 1861, 1862, 1863, 1870) ThinkPad Dock II (MT 2877) Note Before using this information and the product it supports, be sure to read the general information under "Notices" on page 263. Second Edition (April 2008) © Copyright Lenovo 2005, 2008. Portions © Copyright International Business Machines Corporation 2005, 2008. All rights reserved. U.S. GOVERNMENT USERS ­ RESTRICTED RIGHTS: Our products and/or services are provided with RESTRICTED RIGHTS. Use, duplication or disclosure by the Government is subject to the GSA ADP Schedule contract with Lenovo Group Limited, if any, or the standard terms of this commercial license, or if the agency is unable to accept this Program under these terms, then we provide this Program under the provisions set forth in Commercial Computer Software­Restricted Rights at FAR 52.227-19, when applicable, or under Rights in Data-General, FAR 52.227.14 (Alternate III). Contents About this manual . . . . . . . . . . . 1 Introduction . . . . . . . . . . . . . 3 Important service information . . . . . . . . . 3 Strategy for replacing FRUs . . . . . . . . . 3 Strategy for replacing a hard disk drive . . . . . 4 How to use error messages . . . . . . . . 4 Strategy for replacing FRUs for CTO, CMV, and GAV 4 Product definition . . . . . . . . . . . 4 FRU identification for CTO, CMV, and GAV products 5 Important information about replacing RoHS compliant FRUs . . . . . . . . . . . . . . . 7 Diskette compatibility matrix . . . . . . . . . 8 Safety notices: multilingual translations . . . . . . 8 Safety information . . . . . . . . . . . . 20 General safety . . . . . . . . . . . . 20 Electrical safety . . . . . . . . . . . 21 Safety inspection guide . . . . . . . . . 23 Handling devices that are sensitive to electrostatic discharge . . . . . . . . . . . . 24 Grounding requirements . . . . . . . . . 25 Laser compliance statement . . . . . . . . . 26 General descriptions . . . . . . . . Read this first . . . . . . . . . . . What to do first . . . . . . . . . Related service information . . . . . . . Service Web site . . . . . . . . . Restoring the pre-installed system . . . . Passwords . . . . . . . . . . . Power management . . . . . . . . Checkout guide . . . . . . . . . . Testing the computer . . . . . . . . Detecting system information with PC-Doctor . Power system checkout . . . . . . . ThinkPad R50e, R51e and Product overview . . . Specifications . . . Status indicators . . FRU tests . . . . Fn key combinations . Symptom-to-FRU index . Numeric error codes . Error messages . . Beep symptoms . . No-beep symptoms . LCD-related symptoms Intermittent problems . Undetermined problems R52 Series . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .