No
No
Fan protector operated
Power lamp:
Flashes once intermittently in red.
(For 0.5 sec. at an interval of 3 sec.)
Chec
k 1
Start
Yes
Is voltage at
connectors P11 1pin,
P13 1pin on Main Power
Supply PCB(TNPA
2516) 14V?
Microcomputer
peripheral
circuit faulty.
∗
Replace Main/
Digital PCB Assy.
Temperature protector operated
Power lamp :
Flashes intermittently twice in red.
(For 0.5 sec. at an interval of 5 sec.)
Chec
k 2
Start
Adjust PDP unit installation so that
peripheral temperature is 40.0 C or
less.
No
Yes
Is ambient temperature
of IC757 on Main/Digital
PCB less than 60 C ?
Microcomputer
peripheral circuit
faulty.
Yes
Replace
Main/Digital
PCB Assy.
Fan faulty
Replace fan.
Temperature
sensor IC757 faulty.
Temperature sensor cooling
The temperature sensor IC757 is installed
on Main/Digital PCB. Turn the power off
and cool with a point cooler.
Replace
temperature sensor
IC757.
Does unit
operate normally
when temperature sensor
IC757 changed ?
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