Self-Diagnosis Function - Hitachi P42T01E Service Manual

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7. Self-Diagnosis Function

PDP panel self-diagnosis function
This function is for a PDP panel failure with no picture.
Panel failure is automatically self-diagnosed.
It is shown by the blinking of the power indicator light (blue).
The next table shows the PDP PCB in which failure most probably would be allocated according to the
number of blinks.
Number of blue blinks
of power indicator light
1
2
3
4
5
6
7
8
[Number of blinks of power indication light]
Ex. 2 blinks
Note)
1) Main Power switch-off operation cancels the Self-Diagnosis mode.
2) Priority is given when a FAN error occurs (shown by red blinks).
P50T01U/E P50TP01U/E P42T01U/E P42TP01U/E
Presumed failing PCB
of PDP panel
Logic
X-SUS
Y-SUS, SDM
X-SUS, Y-SUS, SDM, PSU
ABUS, ADM, PSU
ADM temperature
ADM temperature
All of above-mentioned
PCBs
1 sec
1 sec
SDM: Scan Driver Module
PSU: Power Supply Unit
ABUS: Address Bus Module
ADM: Address Driver Module
Note) SDM is in permanent contact with
glass part.
2 sec OFF
Repeat
26

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