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R238A(SL)

8 – 5

Problem: POWER ON, indicator does not light up.

CARRY OUT 3D CHECKS.

NOTE: *At the time of making these repairs, make a visual inspection of the varistor.

Check for burned damage and examine the transformer with a tester for the
presence of layer short-circuit (check the primary coil resistance). If any
abnormal condition is detected, replace the defective parts.

CARRY OUT 4R CHECKS.

STEPS

OCCURRENCE

CAUSE OR CORRECTION

1

The rated AC voltage is not present between the normal open terminal of the 
relay RY1 and the normal open terminal of the relay RY2.

Check supply voltage and oven power cord.

2

The rated AC voltage is present to primary side of low voltage transformer.

Low voltage transformer or secondary circuit defective.
Check and repair.

3

Only pattern at “a” is broken.

*Insert jumper wire J1 and solder.

4

Pattern at “a” and “b” are broken.

*Insert the coil RCILF2003YAZZ between “c” and “d”.

(J1)

VRS1

RY1

R238A(SL)

8 – 5

Problem: POWER ON, indicator does not light up.

CARRY OUT 3D CHECKS.

NOTE: *At the time of making these repairs, make a visual inspection of the varistor.

Check for burned damage and examine the transformer with a tester for the
presence of layer short-circuit (check the primary coil resistance). If any
abnormal condition is detected, replace the defective parts.

CARRY OUT 4R CHECKS.

STEPS

OCCURRENCE

CAUSE OR CORRECTION

1

The rated AC voltage is not present between the normal open terminal of the 
relay RY1 and the normal open terminal of the relay RY2.

Check supply voltage and oven power cord.

2

The rated AC voltage is present to primary side of low voltage transformer.

Low voltage transformer or secondary circuit defective.
Check and repair.

3

Only pattern at “a” is broken.

*Insert jumper wire J1 and solder.

4

Pattern at “a” and “b” are broken.

*Insert the coil RCILF2003YAZZ between “c” and “d”.

(J1)

VRS1

RY1

R238A(SL)

8 – 5

Problem: POWER ON, indicator does not light up.

CARRY OUT 3D CHECKS.

NOTE: *At the time of making these repairs, make a visual inspection of the varistor.

Check for burned damage and examine the transformer with a tester for the
presence of layer short-circuit (check the primary coil resistance). If any
abnormal condition is detected, replace the defective parts.

CARRY OUT 4R CHECKS.

STEPS

OCCURRENCE

CAUSE OR CORRECTION

1

The rated AC voltage is not present between the normal open terminal of the 
relay RY1 and the normal open terminal of the relay RY2.

Check supply voltage and oven power cord.

2

The rated AC voltage is present to primary side of low voltage transformer.

Low voltage transformer or secondary circuit defective.
Check and repair.

3

Only pattern at “a” is broken.

*Insert jumper wire J1 and solder.

4

Pattern at “a” and “b” are broken.

*Insert the coil RCILF2003YAZZ between “c” and “d”.

(J1)

VRS1

RY1

R238A(SL)

8 – 5

Problem: POWER ON, indicator does not light up.

CARRY OUT 3D CHECKS.

NOTE: *At the time of making these repairs, make a visual inspection of the varistor.

Check for burned damage and examine the transformer with a tester for the
presence of layer short-circuit (check the primary coil resistance). If any
abnormal condition is detected, replace the defective parts.

CARRY OUT 4R CHECKS.

STEPS

OCCURRENCE

CAUSE OR CORRECTION

1

The rated AC voltage is not present between the normal open terminal of the 
relay RY1 and the normal open terminal of the relay RY2.

Check supply voltage and oven power cord.

2

The rated AC voltage is present to primary side of low voltage transformer.

Low voltage transformer or secondary circuit defective.
Check and repair.

3

Only pattern at “a” is broken.

*Insert jumper wire J1 and solder.

4

Pattern at “a” and “b” are broken.

*Insert the coil RCILF2003YAZZ between “c” and “d”.

(J1)

VRS1

RY1