Mitsubishi Electric PD-4265, Руководство по обслуживанию

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PD-5065
23
(5) Lighting in green, and then in red (Alarm of power voltage error)
Unlike [lighting in red] in the STANDBY mode, [lighting in green] continues for about 30 seconds without any output
of images and audio signals. Since then, the mode turns into [lighting in red].
YES
YES
When the main power supply is turned on in
the state that the AD, PD, and PH connectors
are disconnected, are there the Vs (170Vdc)
and Vd (60Vdc) outputs at Pins
6
-
7
to Pins
9
-
0
of the PD connector and a 5Vdc output
at Pins
1
-
2
of the PH connector?
In this case, is the LED not turned in red after
it has been lit in green for about 30 seconds?
At that time, however, no images are
generated.
The PDP is fault.
NO
NO
NO
Lighting in red
Normal
NO
YES
The MAIN PWB or the
AUDIO PWB is fault.
The Power unit or the
PN connector is fault.
(Caution) The voltage values of Vd and Vs
can differ according to the PDP. The
method of checking these voltage
values is obtainable from
[2. Adjustment of the power unit] in
the method of adjustment.
YES
The MAIN PWB is fault.
Turn On the power by remotecontrol.
Is the LED lit in red after it has been lit
in green for about 30 seconds?
When the main power supply is turned on in
the state that the PA and PV connectors are
disconnected from one after another, is there a
12Vdc output at Pins
1
-
3
of the PA connector
or the 12Vdc and 6Vdc outputs at Pins
1
and
3
-
4
of the PV connector? In this case, is the
LED not turned in red after it has been lit in
green for about 30 seconds?
Is there an output of 3.3Vdc available at Pins
1
~
3
and 2.5Vdc at Pins
7
~
9
in the state
that the PA and PV connectors are returned to
the former state, the main power is turned ON,
and the PN connector is disconnected? In this
case, however, this check must be finished in
30 seconds. Otherwise, there will be power
tripping on account of an alarm.
(To the separate PDP service manual)
Connect the power cord.
Disconnect the power cord.