Lenovo ThinkPad 360 Hardware Maintenance Manual - Page 35

General Checkout Use the following procedure as a guide for computer problems. 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. 1. Obtain the failing symptoms in as much detail as possible. 2. Verify the symptom. Attempt to recreate the failure by running the diagnostic tests or retrying the same operation. Note: To run the diagnostics, refer to "How to Run the Diagnostics" on page 45. 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. Symptom Power failure. (The power indicator does not go on or stay on.) POST does not complete. No beeps/error code are indicated. POST beeps, but no error codes are displayed. POST detected an error and displayed numeric error codes. The diagnostic test detected an error and displayed an FRU code. The configuration is not the same as the installed devices. Other symptoms (such as LCD display problems). Symptoms cannot be recreated. (Intermittent problems.) Go to "Power Systems Checkout" on page 29. "Symptom-to-FRU Index" on page 34, and then use the No Beep Symptoms table. "Symptom-to-FRU Index" on page 34, and then use the Beep Symptoms table. "Symptom-to-FRU Index" on page 34, and then use the Numeric Error Codes table. "FRU Codes" on page 37. "Checking the Installed Devices List" on page 46. "Symptom-to-FRU Index" on page 34, and then use the table for related symptoms. Use the customer reported symptoms and go to "Symptom-to-FRU Index" on page 34. ThinkPad 340x (IBM 2610) 25