Lenovo ThinkPad 365E-ED ThinkPad 365, SelectaDock I - Hardware Maintenance Man - Page 60
Audio Related Symptoms, Peripheral Device Related Symptoms, Other Symptoms, Intermittent Problems
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Audio Related Symptoms The following are the audio input sources: Line In Mic In System board CD-ROM Audio card Note: Use either a data or music CD to check the audio function. If the audio fails see "Audio Card Checkout" on page 34. Peripheral Device Related Symptoms Symptom/Error External display does not work correctly. Printer problems. Serial or parallel port device problems. FRU/Action 1. See "External Display Self-Test" on page 592. 1. Run Printer Self-test. 2. System Board 3. Parallel Port Device 4. Cable 1. Device 2. Device Cable 3. System Board Other Symptoms Symptom/Error Errors occur only when Port Replicator is used. PCMCIA slot pin is damaged. FRU/Action 1. See "Port Replicator Checkout" on page 597. 1. PCMCIA Socket 2. System Board Note: If you cannot find a symptom or error in this list and the problem remains, see "Undetermined Problems" on page 49. Intermittent Problems Intermittent system hang problems can be caused by a variety of reasons that have nothing to do with a hardware defect such as: cosmic radiation, electrostatic discharge, or software errors. FRU replacement should only be considered when a recurring problems exits. When analyzing the intermittent problem, do the following: 1. Run the diagnostic test for the system board in loop mode at least 10 times. 2. If any error is detected, replace the FRU indicated. Rerun the test to verify that no more errors exist. 48 IBM Mobile Systems - ThinkPad HMM Volume 3