Sharp CAROUSEL R-530EK Посібник з експлуатації - Сторінка 20

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R - 5 3 0 E K

R- 530EW

PROCEDURE

LETTER

Steaks, chops or fish

(5) If improper operation is indicated, the control unit is probably defective and should be checked.

FOIL PATTERN ON THE PRINTED WIRING BOARD TEST

To protect the electronic circuits, this model is provided with a fine foil pattern added to the primary on

the PWB, this foil pattern acts as a fuse.

1. Foil pattern check and repairs.

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Follow the troubleshooting guide given below for repair.

STEPS

5) Make a visual inspection of the varistor.

Check for burn damage and examine the

transformer with a tester for the presence

of layer short-circuit (check the primary

coil resistance which is approximately

210

is detected, replace the defective parts.

6) Reconnect all leads removed from components during testing.

7) Re-install the outer case (cabinet).

8) Reconnect the power supply cord after the outer case is installed.

9) Run the oven and check all functions.

2. Follow the troubleshooting guide given below, if indicator does not light up after above check and

repairs are finished.

1) Disconnect the power supply cord, and then remove outer case.

2) Open the door and block it open.

3) Discharge high voltage capacitor.

4) Disconnect the leads to the primary of the power transformer.

5) Ensure that these leads remain isolated from other components and oven chassis by using

insulation tape.

6) After that procedure, reconnect the power supply cord.

7) Follow the troubleshooting guide given below for repair.

STEPS

8) Disconnect the power supply cord, and then remove outer case.

9) Open the door and block it open.

TEST PROCEDURES

1ST STAGE

LEVEL

0.5lb

70%

OCCURRENCE

Only pattern at "a" is broken.

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

15%). If any abnormal condition

OCCURRENCE

The rated AC voltage is not present between

Pin No. 1 of the 2-pin connector (A) and the

common terminal of the relay RY1.

The rated AC voltage is present at primary

side of low voltage transformer.

COMPONENT TEST

2ND STAGE

TIME

LEVEL

30sec.

40%

CAUSE OR CORRECTION

*Insert jumper wire J1 and solder.

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

CN - A

CAUSE OR CORRECTION

Check supply voltage and oven power cord.

Low voltage transformer or secondary circuit defective.

Check and repair.

TIME

15sec.

(J1)