10.1. (Troubleshooting) Oven stops operation during cooking
SYMPTOM
CAUSE
CORRECTIONS
1.
Oven stops in 3 seconds
after
pressing [Start] button.
No input AC is supplied to H.V.Inverter (U)
CN702 terminals
1. Latch Switch
2. Power relay RY1
3. Loose lead wire connector CN701, CN702
4. H.V. Inverter (U)
Oven stops in 23 seconds
after
pressing [Start] button.
H.V.Inverter (U) operates by the control signals
from DPC but magnetron is not oscillating
1. Magnetron
2. Loose lead wire connector CN703
3. H.V. Inverter (U)
Oven stops in 1 minute
after
pressing [Start] button.
(Convection function)
Oven thermistor circuit is not functioning.
1. Oven thermistor
2. Loose wiring
2. No display and no operation at all.
Fuse is blown.
Most probably loose connection of connectors, or
door latch mechanism is not adjusted properly
1. Align door, Door Latch Switches
2. Loose wiring connectors
26
NN-CF770M
Summary of Contents for NN-CF770M CPH
Page 2: ...2 NN CF770M ...
Page 3: ...3 NN CF770M ...
Page 5: ...1 FEATURE CHART 2 CONTROL PANEL 5 NN CF770M ...
Page 6: ...3 SCHEMATIC DIAGRAM 3 1 CPH 6 NN CF770M ...
Page 7: ...3 2 RPH 7 NN CF770M ...
Page 31: ...10 7 How to check the semiconductors using an OHM meter 31 NN CF770M ...
Page 32: ...11 EXPLODED VIEW AND PARTS LIST 11 1 EXPLODED VIEW 32 NN CF770M ...
Page 39: ...12 DIGITAL PROGRAMMER CIRCUIT 12 1 SCHEMATIC DIAGRAM 39 NN CF770M ...
Page 40: ...40 NN CF770M ...
