Power-On Self Test (Boot Check) - Panasonic CF-Y2 Service Manual

4.4. Power-on Self Test (Boot Check)

4.4.1. Outline of POST
The set has a boot check function called POST (Power-On Self Test) in it. The condition of the main body is disgnosed
by checking beep sound or error code.
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
Main board
(Note) A beep sound is also issued in case of other I/O trouble.
Beep signal sound
1-2-2 DMA Controller error
1-2-3 DMA Controller error
1-3-3 DMA Slave error
1-3-4 DMA Master error
1-4-4 Keyboard Controller error
1-3-1 Memory error
1-2-4 Refresh error
1-1-3 CMOS error
1-2-1 Timer error
1-4-1 Interrupt Controller (Master) error
1-4-2 Interrupt Controller (Slave) error
4-1-4 PCI error
4-2-1 PCI error
(2-1-2)
Error message
16