Mitsubishi Electric PD-4265, Руководство по обслуживанию

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PD-5065
22
(4) Alternation blinking in red and green (Alarm of PDP error)
Inch Vs Vd GND 5Vdc GND
42/50 PD-9pin PD-7pin PD-5pin PH-1pin PH-3pin
YES
NO
The Power unit is fault.
NO
Blinking in red and green
NO
YES
Normal
The MAIN PWB is fault.
(Caution) How to reset the alarming condition.
Pressing the [INPUT/EXIT] key of the product, turn on the main power supply
of the main unit. In this state, keep pressing the [Input Select] key for more
than 2 seconds until alarming is canceled. Make confirmation by the method
specified below.
(Caution) The voltage values of Vd and Vs and also the connector
pin numbers 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
plus the table specified below.
(Caution) When the main power supply is turned on with the
[Menu] key of the product kept pressed, it takes 30 seconds
more to assume the state of [blinking in red and green].
In this time period, the following voltage checks should be
carried out. If the state of [blinking in red and green] is
assumed during this checking, take actions of
[Alarm Canceling] and [Voltage Check Mode Setup] again.
YES
Is there a 3.3Vdc output at
Pin
3
of AD connector in
the MAIN PWB?
Turn ON the main power
supply in the state that the
AD, PD, and PH connectors
are disconnected. In this
state, are there the outputs
of Vs (170Vdc), Vd (60Vdc),
and 5Vdc at the PD/PH
connectors as specified in
the table at right? In this
case, however, no images
are generate.
With the [Menu] key of the
product kept pressed, turn
on the main power supply
to assume the
[Voltage Check Mode].
Is there alternation blinking
in red and green?
Turn OFF the main power
supply.
The PDP is fault.
(To the separate PDP service manual)
Connect the power cord.
Disconnect the power cord.