Lenovo ThinkPad 600E Hardware Maintance Manual - June 1999: ThinkPad 600, 600E - Page 63
Beep Symptoms - thinkpad 600 error codes
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Beep Symptoms Symptom / Error Continuous beeps. One beep and a blank, unreadable, or flashing LCD. One beep, and the message "Unable to access boot source." One long and two short beeps, and a blank or unreadable LCD. One long beep followed by four short beeps each time the power switch is operated. (System cannot power on due to low battery voltage.) One beep every second. (System is shutting down due to low battery voltage.) Two short beeps with error codes. Two short beeps with blank screen. Symptom-to-FRU Index FRU / Action in Sequence 1. System board 1. Reseat the LCD connector 2. LCD assembly 3. System board 1. Boot device 2. System board 1. System board 2. LCD assembly Connect the AC Adapter or install a fully charged battery. Connect the AC Adapter or install a fully charged battery. (Allow the system to completely shut down before changing the battery.) POST error. See "Numeric Error Codes" on page 52. 1. System board No Beep Symptoms Symptom / Error No beep, power-on indicator not on, and a blank LCD during POST. No beep, power-on indicator on, and a blank LCD during POST. No beep, power-on indicator on, and a blinking cursor only during POST. No beep during POST but system runs correctly. FRU / Action in Sequence 1. Go to "Power Systems Checkout" on page 35. 2. System board 3. Check the power outlet 1. System board 1. System board 1. Turn the volume up and check the speaker. 2. Speaker 3. Sub card 4. System board ThinkPad 600 57