Troubleshooting) Oven Stops Operation During Cooking - Panasonic NN-CS596S BPQ Service Manual

NN-CS596S
7.1.

(Troubleshooting) Oven stops operation during cooking

SYMPTOM
1. Oven stops in 3 seconds after
pressing start pad.
Oven stops in 23 seconds after
pressing start pad.
Oven stops in 1 minute after
pressing start pad.
(Convection/Grill convection
cooking)
Oven stops in 30 seconds after
pressing start pad. (Steam cooking)
2. No display and no operation at all.
Fuse is blown.
CAUSE
No input AC is supplied to H.V.Inverter (U)
CN702 terminals
H.V.Inverter (U) operates by the control signals
from DPC but magnetron is not oscillating
Oven thermistor circuit is not functions.
Steam heater thermistor circuit is not functions. 1. Steam heater thermistor
Most probably loose connection of connectors,
or door latch mechanism is not adjusted properly
24
CORRECTIONS
1. Latch Switch
2. Power relay RY1
3. Loose lead wire connector CN701, CN702
1. Magnetron
2. Loose lead wire connector CN703
1. Oven thermistor
2. Loose wiring
2. Loose wiring
3. bad conductibility between thermistor and steam
heater
1. Align door, Door Latch Switches
2. Loose wiring connectors