Mitsubishi PD-5030, Service Manual

Page: 12 / 66

3-6
Move the main power setting for
OFF
→
ON.
Is there alternation blinking in red
and green?
Is there a 3.3Vdc output at Pin
94 of IC9501 in the MAIN PWB?
(See the PWB Layout Diagram
on P4-20.)
Normal
YES
Blinking in red and green
NO
YES
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
generated.
(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.
The PDP is fault.
YES
The MAIN PWB is fault.
NO
The Power unit is fault.
NO
(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.
Vs Vd GND 5Vdc GND
PD-5030 PD-9pin PD-7pin PD-5pin PH-1pin PH-3pin
1
For the PD-5030
Turn OFF the main power supply.
With the [Menu] key of the prod-
uct kept pressed, turn on the main
power supply to assume the [Volt-
age Check Mode].
(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 [Volt-
age Check Mode Setup] again.