Lenovo ThinkPad 365E-ED ThinkPad 365, SelectaDock I - Hardware Maintenance Man - Page 377
No Beep Symptoms
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Symptom / Error One beep, and the message "Unable to access boot source." One long, 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. FRU / Action in Sequence 1. Boot device 2. System board 1. System board 2. Video card 3. LCD assembly Connect the AC Adapter or install a fully charged battery. Connect the AC Adapter or install a fully charged battery (allows system to complete shutdown before changing the battery). POST error. See "Numeric Error Codes" on page 359. System board No Beep Symptoms Symptom / Error FRU / Action in Sequence No beep, power-on indicator not on, and a blank LCD during POST. 1. Go to "Power Systems Checkout" on page 349. 2. System board 3. DC/DC card 4. Power sources No beep, power-on indicator on, and a blank LCD during POST. 1. System board 2. DC/DC card 3. CPU card No beep, power-on indicator on, and a blinking cursor only during POST. 1. System board 2. CPU card 3. DC/DC card No beep during POST but system runs correctly. 1. Turn the volume up and check the speaker. 2. Check whether the DSP card or Audio (ESS) card connector is loose and reseat the connector. 3. Speaker 4. DSP card/audio (ESS) card 5. DC/DC card ThinkPad 760 (9546, 9547) 365