Filter
Top Products
R-210A
12
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.
K HIGH 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.
J NOISE 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.
If incorrect readings are obtained, replace the noise filter unit.
CARRY OUT 4R CHECKS.
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
I TIMER MOTOR (WITH VARI-SWITCH) TEST
CARRY OUT 3D CHECKS before any of the following timer tests.
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.
CARRY OUT 4R CHECKS after any of the above tests.
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
Timer motor with Vari-Switch
3
4
M
Vari switch
1
2
6
5
IN1
AC1 AC2
IN2
NOISE SUPPRESSION COIL
FUSE
13A
LINE CROSS CAPACITOR 0.22µ/ AC125V
DISCHARGE RESISTOR 180 kΩ/ 0.5 W
VARISTOR 15G / 270 V
LINE BYPASS CAPACITOR
0.0022µ/AC250V
LINE BYPASS CAPACITOR
0.0022µ/AC250V
NOISE FILTER