IBM 2373 Hardware Maintenance Manual - Page 69
symptoms, No-beep
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Beep symptoms Symptom-to-FRU index Symptom or error FRU or action, in sequence One beep and a blank, unreadable, or flashing LCD. 1. Reseat the LCD connector. 2. LCD assembly. 3. External CRT. 4. System board. One long and two short beeps, and a blank or unreadable LCD. 1. System board. 2. LCD assembly. 3. DIMM. Two short beeps with error codes. POST error. See "Numeric error codes" on page 58. Two short beeps and a blank screen. 1. System board. 2. DIMM. Three short beeps, pause, three more short beeps, and one short beep. 1. DIMM. 2. System board One short beep, pause, three short beeps, pause, three more short beeps, and one short beep. Only the cursor appears. Reinstall the operating system. Four cycles of four short beeps System board (security chip) and a blank screen. Five short beeps and a blank screen. System board No-beep symptoms Symptom or error FRU or action, in sequence No beep, power-on indicator on, LCD blank, and no POST. 1. Make sure that every connector is connected tightly and correctly. 2. DIMM. 3. System board. No beep, power-on indicator on, and LCD blank during POST. 1. Reseat DIMM. 2. System board. The power-on password prompt appears. A power-on password or a supervisor password is set. Type the password and press Enter. The hard-disk password prompt A hard-disk password is set. appears. Type the password and press Enter. The DOS full screen looks smaller than it should. Start the ThinkPad Configuration program and set the Screen expansion function. ThinkPad T40/T40p, T41/T41p, T42/T42p Series 63