IBM 86624RY Maintenance Manual - Page 17

Notes 1. For systems that are part of a shared DASD cluster, run one test at a time in looped mode. Do not run all tests in looped mode, as this could enable the DASD diagnostic tests. 2. If multiple error codes are displayed, diagnose the first error code displayed. 3. If the computer hangs with a POST error, go to the "Symptom-to-FRU index" on page 285. 4. If the computer hangs and no error is displayed, go to "Undetermined problems" on page 325. 5. Power Supply problems, see "Symptom-to-FRU index" on page 285. 6. Safety information, see "Safety information" on page 340. 7. For intermittent problems, check the error log; see, "Error logs" on page 31. 001 IS THE SYSTEM PART OF A CLUSTER? Yes No 002 Go to Step 004. 003 Schedule maintenance with the customer. Shut down all systems related to the cluster. Run storage test. 004 - Power-off the computer and all external devices. - Check all cables and power cords. - Set all display controls to the middle position. - Power-on all external devices. - Power-on the computer. - Record any POST error messages displayed on the screen. If an error is displayed, look up the first error in the "Symptom-to-FRU index" on page 285. - Check the information LED panel System Error LED; if on, see "Information panel system error LED" on page 290. - Check the System Error Log. If an error was recorded by the system, see "Symptom-to-FRU index" on page 285. - Start the Diagnostic Programs. See "Running diagnostic programs" on page 14. - Check for the following responses: 1. One beep. (Step 004 continues) Netfinity 5500 M20 - Type 8662 9