- 3 -
- TABLE OF CONTENTS -
Adjustment Procedures ............................................. 1
Specifications ............................................................ 2
Power output Measurement ...................................... 2
Precautions and Repair Service Tips ....................... 2
Circuit Diagram ......................................................... 3
Test Procedures and Troubleshooting...............4
•`
10
Disassembly Instructions .............................. 11
•`
14
Exploded View and Parts List ........................ 15
•`
22
Overall Circuit Diagram.................................23
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25
1. ADJUSTMENT PROCEDURES
TO AVOID POSSIBLE EXPOSURE TO MICROWAVE
ENERGY LEAKAGE, THE FOLLOWING ADJUST-
MENTS OF THE INTERLOCK SWITCHES SHOULD
BE MADE ONLY BY AUTHORIZED SERVICE PER-
SONNEL.
The service center should have the designated
detector to measure the microwave energy
leakage after the repair or adjustment.
NOTE: Detector to be used at the service center is
NARDA 8100, 8200 or the equivalent.
INTERLOCK SWITCH, INTERLOCK MONITOR
SWITCH AND DOOR SENSING SWITCH ADJUST-
MENT
(Figure 1)
(1) Loosen 2 screws securing the lever stopper.
(2) Adjust the lever stopper position so that it is pushed
up and pulled backwards until there is zero gap
between the latch lever and the switch body on the
interlock switch. At the same time there is zero gap
between the latch lever and the switch body on the
door sensing switch when the door latch is securely
locked.
(3) Tighten the lever stopper screws securely.
(4) Make sure the interlock monitor switch closes
after the interlock switch opens when the door is
opened very slowly, according to “CHECKOUT
PROCEDURE FOR SWITCHES” on page 6.
(5) Make sure the interlock monitor switch opens
before the interlock switch closes when the door is
closed very slowly, according to CHECKOUT PRO-
CEDURE FOR SWITCHES” on page 6.
(6)(i) Make sure the microwave energy leakage should
be no greater than 4 mW/cm
2
to allow to measure-
ment uncertainty when measured with a detector.
(All service adjustments must be made for mini-
mum microwave energy leakage readings.) (For US)
(6)(ii) Make sure the microwave energy leakage is
below the limit of 1 mW/cm
2
(at 275cc water load),
5 mW/cm
2
(at no load) and 5 mW/cm
2
(at 275 cc
water load without cabinet) when measured with a
detector.
(All service adjustments must be made for minimum
microwave energy leakage readings.) (For Canada)
NOTE: If the interlock monitor circuit operates and at
the same time the fuse blows with the door
open, be sure to replace the relay circuit board
, Interlock switch and monitor switch.
Interlock monitor
switch
Lever stopper
Latch Lever
Interlock
switch (Secondary
interlock switch)
Latch Lever
Door sensing
switch
(Primary interlock
switch)
Figure 1
Screws
