Lenovo ThinkPad i Series 1400 Hardware Maintenance Manual (August 1999) - Page 32

Check Procedures Use the following procedure as a guide for computer problems. Notes: 1. The diagnostic tests are intended to test only IBM products. Non-IBM products, prototype cards, or modified options can give false errors and invalid system responses. 2. Some test items require tools as shown below: Audio Wrap cable (P/N: 66G5180) Eraseable 2HD diskette Parallel Wrap plug (P/N: 72X8546) Parallel test cable (P/N: 05K2580) Serial Wrap plug (P/N: 72X8546) Screwdriver Kit (P/N: 95F3598) Screwdriver Kit (P/N: 05K4693) Torque Screwdriver (P/N: 05K4695) 5mm Socket Wrench (P/N: 05K4694) PCMCIA: PC test card (P/N: 35G4703) CD-ROM: Any data and audio CDs ThinkPad i Series 1400 Diagnostics Diskette (P/N: 01K4841) ThinkPad i Series 1400 Utility Diskette (P/N: 01K4842) 1. Obtain the failing symptoms in as much detail as possible. 2. Verify the symptoms by attempting to recreate the failure by running the diagnostic test or by repeating the same operation. 3. Use the following table with the verified symptom to determine which page to go to. Search the symptoms column and find the description that best matches your symptom; then go to the page shown in the "Go to" column. Symptoms (Verified) Power failure. (The power-on indicator does not go on or stay on.) POST does not complete. No beeps or error codes/messages are indicated. POST detected an error and displayed numeric error code with error message. Go to "Power Systems Check" on page 25, then use table in "Power-Related Symptoms" on page 42. "Symptom-to-FRU Index" on page 36, then use table in "No Beep Symptoms" on page 38. "Symptom-to-FRU Index" on page 36. 24 ThinkPad i Series 1400 HMM