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- TABLE OF CONTENTS -
Adjustment procedure..................................1 Test Procedures and Troubleshooting............ 4 - 10
Specifications.............................................. 2 Disassembly Instructions............................11 - 14
Poweroutput Measurement........................... 2 Exploded view and Parts List...................... 15 - 22
Precautions and Repair Service Tips............ 2 Overall Circuit Diagram.............................. 23 - 24
Circuit Diagram............................................3
1.ADJUSTMENT PROCEDURE
TO AVOIDE POSSIBLE EXPOSURE TO MICROWAVE
ENERGY LEAKAGE, THE FOLLOWING ADJUSTMENTS
OF THE INTERLOCK SWITCHES SHOULD BE MADE
ONLY BY AUTHORIZED SERVICE PARSONNEL.
PRIMARY INTERLOCK SWITCH, INTERLOCK
MONITOR SWITCH AND DOOR SENSING SWITCH
ADJUSTMENT (Figure 1)
(1) Loosen 2 screws securing the lever stopper.
(2) Adjust the lever stopper position so that it is pushed up
and pull backward until there is zero gap between the
latch lever and the switch body on the primary interlock
switch. At the same time there is about zero gap
between 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
primary 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
primary interlock switch closes when the door is closed
very slowly, accoding to “CHECKOUT PROCEDURE
FOR SWITCHES” on page 6.
(6) Make sure the microwave energy leakage is below
the limit of the reguration (5 mW/cm
2
) when
measured with a detector.
(All service adjustments must be made for mini-
mum microwave energy readings.)
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.
Figure 1
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT BE EXPOSED TO THE
MICROWAVE ENERGY WHICH MAY RADIATE FROM
THE MAGNETRON OR OTHER MICROWAVE GENE-
RATING DEVICE IF IT IS IMPROPERLY USED OR
CONNECTED. ALL INPUT AND OUTPUT MICROWAVE
CONNECTIONS, WAVEGUIDE, FLANGES AND GAS-
KETS MUST BE SECURE. NEVER OPERATE THE
DEVICE WITHOUT A MICROWAVE ENERGY ABSOR-
BING LOAD ATTACHED. NEVER LOOK AN OPEN
WAVEGUIDE OR ANTENNA WHILE THE DEVICE IS
ENERGIZED.
Lever stopper
Primary
interlock
swith
Interlock
monitor
swith
Door
sensing
swith
Screws
Latch
lever
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