Hitachi 42PD9700C, Service Manual

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42PD9700C/U & 55PD9700C/U
8. Self-Diagnosis Function
This chassis has 2 modes of self-diagnosis function.
(1)
PDP panel check mode: It indicates the one latest record of the PDP panel failure with blinking of the
power indication light (LED).
(2) Signal circuit check mode: It indicates the check result on some points of the signal circuit and the history
of them with On-Screen Display (OSD).
PDP panel self-diagnosis function
This function is for a PDP panel failure with no picture.
To enter to this Self-Diagnosis mode, follow the next steps:
Preparation:
1) The Power Cord should be connected to AC line and the Main Power switch should be turned on.
2) Turn the power off by the SUB-POWER( ) button of the monitor or the remote control.
Procedure:
1) Press the SUB-POWER( ) button and button on the bottom of the monitor at the same time, and keep
it for more than 5 seconds after the power turned on.
2) It generates red blinking series of the power indicator light.
3) Any operation would cancel the Self -Diagnosis mode.
4) The next table shows the PDP P
C
B in which failure most probably would be allocated according to the
number of blinks.
Number of red blinks Presumed failing P
C
B
of power indication light of PDP panel
1 Logic
2 X-SUS
3 Y-SUS, SDM SDM: Scan Driver Module
4 X-SUS, Y-SUS, SDM, PSU PSU: Power Supply Unit
5 ABUS, ADM, PSU ADM: Address Driver Module
6 ADM temperature
7 ADM temperature
8 All of above-mentioned
P C Bs
Note) SDM is permanently contacted to glass part
[Blinking condition of power indication light]
Ex. 2 blinks
1 sec 1 sec 2 sec OFF Repeat