Hitachi 42HDT51M Service Manual page 52

11. PDP TROUBLESHOOTING FLOWCHARTS
Self Diagnosis Function
˙PDP Monitor [42HDT51,55HDT51]
Sub-Power button also activates Self Diagnosis mode for a PDP monitor failure with no picture.
To enter to Self Diagnosis mode, follow the next conditions and steps:
Conditions:
1) The connection cable between the Monitor and AVC (DVI and DIN) must be unplugged from the Monitor.
2) Make sure Power Cord of AC line is connected to the PDP Monitor.
3) The Main Power switch must be turned on.
Procedure:
42": 1) Press Sub-Power button for more than 5 seconds.
2) It generates red blinking series of the power indicator light when PDP Monitor has some failure.
3) If PDP Monitor has no failure, it enters Burn-in mode.
4) Turning off the Main Power switch would cancel the Self Diagnosis mode.
5) The next table shows the PDP PWB in which failure most probably would be allocated according
to the number of blinks.
55": 1) Press Sub-Power button and
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 PWB in which failure most probably would be allocated according
to the number of blinks.
Number of red blinks
of power indication light
1
2
3
4
5
6
7
8
[Blinking condition of power indication light]
ex. 2 blinks
1 sec
button on the bottom of the monitor at the same time, and keep it for
Presumed failing PWB
Logic
X-SUS
Y-SUS
X-SUS, Y-SUS, SDM, PSU
ADM, PSU, ABUS
ADM
ADM
All PWBís
1 sec 2 sec OFF
SDM: Scan Driver Module
PSU: Power Supply Unit
ADM: Address Driver Module
Note) SDM is permanently contacted to glass part.
Repeat
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PT5-G/PW1-H