R-216(G)
R-216(IN)
R-216(W)
R - 2 1 6 ( Y )
13
TEST PROCEDURES
PROCEDURE
LETTER
COMPONENT TEST
I
NOISE FILTER TEST
CARRY OUT 3D CHECKS.
Disconnect the leads from the terminals of noise filter.
Using an ohmmeter, check between the terminals as described in
the following table.
MEASURING POINTS
INDICATION OF OHMMETER
Between N and L
Open circuit
Between terminal N and WHITE
Short circuit
Between terminal L and RED
Short circuit
If incorrect readings are obtained, replace the noise filter unit.
CARRY OUT 4R CHECKS.
CARRY OUT 3D CHECKS.
If the high voltage fuse F2 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 REPLACE-
MENT.
J
HIGH VOLTAGE FUSE F2 TEST
K
CONTROL PANEL ASSEMBLY TEST
The control panel consists of circuits including semiconductors such as LSI, ICs, etc. Therefore, unlike
conventional microwave ovens, proper maintenance can not be performed with only a voltmeter and
ohmmeter.
In this service manual, troubleshooting by replacement is described according to the symptoms
indicated.
1. Control Panel
The following symptoms indicate a defective control unit.
1-1 In connection with LEDs
a) At a certain LED, all or some LEDs do not light up.
b) At a certain LED, brightness is low.
c) Only one LED does not light up.
d) All or some LEDs continue to light up.
e) A certain group of LEDs do not light up.
f) The LEDs flicker.
1-2 Tact switch
a) When touching a tact switch, a tact switch produces no signal.
1-3 Other possible troubles caused by defective control unit.
a) Buzzer does not sound or continues to sound.
b) Cooking is not possible.
c) Cooking time can not be set.
d) Power level can not be set.
H
FUSE F1
CARRY OUT 3D CHECKS.
If the fuse F1 is blown when the door is opened, check the monitored latch switch SW1, 2nd. interkock
relay RY2, 2nd. interkock relay control switch SW3 and monitor switch SW2.
If the fuse F1 is blown by incorrect door switching, replace the defective switch(s) and the fuse F1.
If the fuse F1 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.
FUSE
T6.3A
F1:
N
L
LINE CROSS CAPACITOR
0.068
µ
/AC250V
NOISE SUPPRESSION COIL
LINE BYPASS
CAPACITOR
0.0022
µ
/AC250V
LINE BYPASS
CAPACITOR
0.0022
µ
/AC250V
NOISE FILTER
WHT
RED
