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Adjustment Procedures ............................................. 1
Specifications ............................................................ 2
Power output Measurement ....................................... 2
Precautions and Repair Service Tips .......................... 2
Circuit Diagram .......................................................... 3
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 USE OR CON-
NECTED. ALL INPUT MICROWAVE CONNECTIONS,
WAVEGUIDE, FLANGES, AND GASKETS MUST BE
SECURE. NEVER OPERATE THE DEVICE WITHOUT
A MICROWAVE ENERGY ABSORBING LOAD AT-
TACHED. NEVER LOOK INTO AN OPEN WAVE GUIDE
OR ANTENNA WHILE THE DEVICE IS ENERGIZED.
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 PERSONNEL.
PRIMARY INTERLOCK SWITCH, INTERLOCK MONI-
TOR SWITCH AND DOOR SENSING SWITCH AD-
JUSTMENT
(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 about zero gap
between the latch lever and the switch body on the
door primary interlock switch and the 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 interlock switch opens 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, according to "CHECKOUT PRO-
CEDURE FOR SWITCHES" on page 6.
- TABLE OF CONTENTS -
Test Procedures and Troubleshooting ................... 4-10
Disassembly Instructions .................................... 11-14
Exploded View and Parts List ............................. 15-22
Overall Circuit Diagram......................................23-24
Control Circuit Board ................................................ 25
(6) Make sure the microwave energy leakage should be
no greater than 5 mW/cm2 to allow to measurement
uncertainty when measured with a detector.
(All service adjustments must be made for minimum
microwave energy leakage readings.)
NOTE: If the interlock monitor circuit operates and at
- 1 -
the same time the fuse blows with the door
opened, be sure to replace the relay circuit
board because relay 3 and 4 on the control
circuit board, the door sensing switch and the
electric circuit related on the door sensing
switch, which act as Secondary Interlock
switch.
Screws
Lever stopper
Interlock monitor
switch
Latch lever
Primary Interlock
switch
Latch lever
Door sensing
switch
Figure 1
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