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TEST PROCEDURES
PROCEDURE
LETTER
N
PROCEDURES TO BE TAKEN WHEN THE FOIL PATTERN ON THE PRINTED WIRING BOARD
(PWB) IS OPEN
To protect the electronic circuits, this model is provided with a fine foil pattern added to the input circuit on
the PWB, this foil pattern acts as a fuse. If the foil pattern is open, follow the troubleshooting guide given
below for repair.
Problem: POWER ON, indicator does not light up.
STEPS
1
2
3
NOTE: *At the time of making these repairs,
COMPONENT TEST
OCCURRENCE
The rated voltage is not applied between Pin
No. 5 of the 3 pin connector (A) and the
common terminal of the relay RY2.
Only pattern at "a" is broken.
Pattern at "a" and "b" are broken.
make a visual inspection of the varistor.
Check for burned damage. If any ab-
normal condition is detected, replace
the defective parts.
R-363 -
CAUSE OR CORRECTION
Check supply voltage and oven power cord.
*Insert jumper wire J1 and solder.
*Insert the coil RCILF2003YAZZ between "c" and "d".
R70
RY2
1
18
c
b
d
(J1)
a
5
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