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NN-8507,
NN-8557
NN-8807,
NN-8857
WARNING
RESULT
CAUSE
REMEDY
Defective thermal cutout
Replace
(Magnetron)
Surrounding temperature is
Install the oven onto proper
too high
location
CHECK
Check if fan motor is rotating
Defective fan motor
Replace
Faulty contacts of power relay
Ly! Replace power relay 1 (RY1)
1 or open relay coil (RY1)
(on the D.P.C.)
|
Repair or replace
Approx. 18V DC
Check DC voltage being ap-
plied to power relay 1 coil
(RY1) (NOTE 4)
Defective DPC
NOTE 4: Follow the test procedures below.
(1) Unplug the oven power cord.
(4) Open the door assembly.
(5) Plug in the oven power cord.
opened.
DIGITAL
PROGRAMMER
CIRCUIT
(D.P.C.)
RY 4
COIL
TERMINALS
°
RY 5
RY 1
COIL
shies
COIL
TERMINALS
RY 3
COIL
TERMINALS
RY 2
COIL
TERMINALS
Fig. 39
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