No
No
No
- 21 -
∗
Vs and Va must be
adjusted.
No
Fan protector operated
Power lamp:
Flashes six times intermittently in Red
Fan1:Flashes six times Red LED and
flashes once Green LED every 8 sec.
flashes once Green LED every 10 sec.
Fan2:Flashes six times Red LED and
Chec
k 2
Start
Yes
Yes
Is voltage
at connectors
CN352 and on
Main PCB 14V?
Is voltage at connectors CN951,
CN952 on Main/Digital PCB
+ and - of CN951 and 952
5V to 11V.
Is fan rotary signal of
Main/Digital PCB normal ?
Pin
of CN951, CN952
16 to 90 Hz.
Power Supply Unit
circuit faulty.
∗
Replace Main
Power PCB.
Temperature protector operated
Power lamp :
Flashes intermittently twice in red.
(For 0.5 sec. at an interval of 5 sec.)
Chec
k 3
Start
Adjust PDP unit installation so that
peripheral temperature is 40.0 or
less.
No
Yes
Is ambient temperature
of IC6950 on Sensor
PCB less than 66 ?
Microcomputer
peripheral circuit
faulty.
Yes
Replace
Main/Digital
PCB Assy.
Microcomputer
peripheral circuit
faulty.
Replace
Main/Digital
PCB Assy.
Fan faulty
Replace fan.
Yes
Microcomputer
peripheral circuit
faulty.
Replace
Main/Digital
PCB Assy.
Temperature
sensor IC6950 faulty.
Replace
temperature sensor
IC6950.
Does unit
operate normally
when temperature sensor
IC6950 changed ?
normal?
