4.4. Power-on Self Test (Boot Check)
4.4.1. Outline of POST
The set has a boot check function called POST
Start ……………. Test begins automatically when power switch is set to ON.
Nomal finish …… After memory checking, a beep sound is issued once and the set is placed into automatic stop.
Note: If error occurs, nothing is displayed. (No display of OK, etc.)
4.4.2. Error Diagnosis by Checking Beep Signal Sound
The beep sound is as follows:
(Length of bar shows length of sound) Table of errors classified by beep sounds
Diagnosis | Beep signal sound | Error message |
Main board | DMA Controller error | |
| DMA Controller error | |
| DMA Slave error | |
| DMA Master error | |
| Keyboard Controller error | |
| Memory error | |
| Refresh error | |
| CMOS error | |
| Timer error | |
| Interrupt Controller (Master) error | |
| Interrupt Controller (Slave) error | |
| PCI error | |
| PCI error |
(Note) A beep sound is also issued in case of other I/O trouble.
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