Lenovo ThinkPad 380ED ThinkPad 380, 385, 560, 560E, all 760, 765 and SelectADo - Page 156

FRU Code 72 FRU PCMCIA slot assembly If the problem still remains after replacement of the FRUs, go to "Undetermined Problems" on page 149. 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. FRU / Action in Sequence 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 138. 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 131. 2. DC/DC card 3. System board 4. Power sources No beep, power-on indicator on, and a blank LCD during POST. DC/DC card System board No beep, power-on indicator on, and a blinking cursor only during POST. DC/DC card System board 144 IBM Mobile Systems HMM