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| Symptom/Error | FRU/Action |
|---|---|
| Continuous beeps. | 1. System Board |
| One beep and a blank, | 1. Reseat the LCD connector |
| unreadable, or flashing LCD. | 2. LCD Assembly |
| 3. System Board | |
| One beep, and the message, | 1. Boot device. |
| Unable to access boot source | 2. System Board |
| One long, two short beeps and a | 1. System Board |
| blank or unreadable LCD. | 2. LCD Assembly |
| One long beep followed by four short | 1. Connect the AC Adapter |
| beeps each time the power switch is | or install a fully-charged battery |
| operated (System cannot power-on | |
| due to low battery voltage.) | |
| One beep every second. | 1. Connect the AC Adapter or install |
| (System is shutting down due to | a fully-charged battery |
| low battery voltage.) | (allow the system to completely |
| shutdown before changing the battery.) | |
| Two short beeps with error codes. | 1. POST error. |
| See Numeric Error Codes | |
| ° TP 2640-560 | |
| ° TP 2640-560x (60x, 70x) | |
| Two short beeps with blank screen. | 1. System Board |
Please see the LEGAL - Trademark notice.
Feel free - send a 
for any BUG on this page found - Thank you.