R-341AM - Sharp Home Appliance Service Manual (repair manual). Page 7

R341M - 7

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

OCCURRENCE

CAUSE OR CORRECTION

1

The rated voltage is not applied between Pin

Check supply voltage and oven power cord.

No. 5 of the 3 pin connector (A) and the

common terminal of the relay RY2.

2

Only pattern at "a" is broken.

*Insert jumper wire J1 and solder.

3

Pattern at "a" and "b" are broken.

*Insert the coil RCILF2003YAZZ between "c" and "d".

NOTE: *At the time of making these repairs, make a visual inspection of the varistor. Check for burned damage. If

any abnormal condition is detected, replace the defective parts.

1

5

RY2

(J1)

CN-A 

RY1

D1

VRS1

D71

ZD71