R-210A

TEST PROCEDURES

PROCEDURE

LETTER

COMPONENT TEST

If the fuse 13A is blown by incorrect door switching replace the defective switch(es) and the fuse 13A.

If the fuse 13A is blown, there is a shorts or grounds in electrical parts or wire harness. Check them and replace the defective parts or repair the wire harness.

CARRY OUT 4R CHECKS.

CAUTION: Only replace fuse with the correct value replacement.

ITIMER MOTOR (WITH VARI-SWITCH) TEST

6

CARRY OUT 3D CHECKS before any of the following timer tests.

1

3

M

Vari switch

5

2

4

Timer motor with Vari-Switch

TIMER SWITCH- CONTACTS

Disconnect the leads from terminals described at following table. Connect an ohmmeter across terminals described at following table.

Advance the timer and check that a short circuit reading is obtained on the meter.

Turn the timer back to the zero (0) position and check that an open circuit reading is obtained on the meter. If these readings are not obtained then replace the timer.

Disconnecting and checking terminals

1 and 2

TIMER - MOTOR

Disconnect the leads from terminals described at following table. Connect an ohmmeter across the timer motor winding, terminals are described at following table, and check that a reading of resistance described at following table is indicated.

If this reading is not obtained then the timer is probably defective and should be replaced.

 

Disconnecting and checking terminals

5 and 6

 

 

 

 

Resistance of motor winding

approximately 11.3 kΩ

 

 

 

CARRY OUT 4R CHECKS after any of the above tests.

 

JNOISE FILTER TEST CARRY OUT 3D CHECKS.

Disconnect the leads from the terminals of the noise filter. Using an ohmmeter, check between the terminals as described in the following table.

MEASURING POINT

INDICATION OF OHMMETER

 

 

Between IN1 and IN2

Approx. 180 kΩ

 

 

Between terminal N and WHITE

Short circuit

 

 

Between terminal L and RED

Short circuit

 

 

If incorrect readings are obtained, replace the noise filter unit.

IN1

NOISE FILTER

 

IN2

 

FUSE 13A

LINE CROSS CAPACITOR 0.22/ AC125V

VARISTOR 15G / 270 V

DISCHARGE RESISTOR 180 kΩ / 0.5 W

NOISE SUPPRESSION COIL

 

 

 

 

 

 

LINE BYPASS CAPACITOR

 

LINE BYPASS CAPACITOR

0.0022/AC250V

 

0.0022/AC250V

AC1

 

 

 

AC2

 

CARRY OUT 4R CHECKS.

KHIGH VOLTAGE FUSE TEST

CARRY OUT 3D CHECKS.

If the high voltage fuse is blown, there could be a short in the high voltage rectifier or the magnetron. Check them and replace the defective parts and the high voltage fuse.

CARRY OUT 4R CHECKS.

CAUTION: ONLY REPLACE HIGH VOLTAGE FUSE WITH THE CORRECT VALUE REPLACEMENT.

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Sharp R-210A Timer Motor with VARI-SWITCH Test, Timer SWITCH- Contacts, Noise Filter Test Carry OUT 3D Checks

R-210A specifications

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In summary, the Sharp R-210A microwave oven combines robust power, innovative technology, and user-friendly features. With its ample capacity, intuitive controls, and safety measures, it continues to be a reliable choice for those looking to simplify their cooking experiences in the kitchen. Whether you're reheating leftovers or preparing a full meal, the Sharp R-210A is equipped to meet various culinary needs with ease and efficiency.