Troubleshooting) Oven Stops Operation During Cooking - Panasonic NN-GS597M Service Manual

NN-GS597M
9.1.

(Troubleshooting) Oven stops operation during cooking

SYMPTOM
1. Oven stops in 3 seconds after
pressing [Start] button.
Oven stops in 37 seconds after
pressing [Start] button.
Oven stops in 1 minute after
pressing [Start] button. (Oven
function)
Oven stops in 30 seconds after
pressing [Start] button. (Steam
function)
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 functioning.
Steam heater thermistor
functioning.
Most probably loose connection of connectors,
or door latch mechanism is not adjusted properly
24
1. Latch Switch
2. Power relay RY1 and/or RY2, RY3
3. Loose lead wire connector CN701, CN702
4. H.V. Inverter (U)
1. Magnetron
2. Loose lead wire connector CN703
3. H.V. Inverter (U)
1. Oven thermistor
2. Loose wiring
circuit is not 1. Steam heater thermistor
2. Loose wiring
3. bad conductibility between thermistor and steam
heater
1. Align door, Door Latch Switches
2. Loose wiring connectors
CORRECTIONS