Pioneer PDP-424MV Service Manual page 42

(4) Alternation blinking in red and green (Alarm of PDP error)
(Caution) How to reset the alarming condition Pressing the [Input Select] 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.
Blinking in red and green
Move the main power
setting for OFF → ON.
Is there alternation blinking
in red and green?
YES
Turn OFF the main power
supply.
With the [Menu] key of the
product kept pressed, turn
on the main power supply
to assume the
[Voltage Check Mode].
Is there a 3.3Vdc output at
Pin 94 of IC9501 in the
MAIN PWB? (See the PWB
Layout Diagram on P4-20.)
NO
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.
YES
The PDP is fault.
( Refer to P7-1 "HOW TO DIAGNOSE THE PDP MODULE".)
42
NO
Normal
(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
The MAIN PWB is fault.
NO
The Power unit is fault.
(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.
Inch Vs
42/50
PD-9pin
61 PD-9pin
PH-1pin
8-6
Vd GND 5Vdc
PD-7pin PD-5pin PH-1pin
PD-7pin PD-5pin PD-4pin
PH-4pin PH-5pin PH-7pin
GND
PH-3pin
PD-5pin
PH-5pin