NOTE
: If the interlock monitor circuit operates and at the same
time the Fuse blows with the door opened, be sure to
replace the Control Circuit Board because Relay 2 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.
Test Procedures and Troubleshooting ................
4 ~ 10
Disassembly Instructions ................................
11 ~ 14
Exploded View and Parts List ..........................
15 ~ 20
Overall Circuit Diagram ..................................
21
Adjustment Procedures .......................................... 1
Specifications ....................................................... 2
Power Output Measurement ................................... 2
Precautions and Repair Service Tips ......................... 2
Circuit Diagram .................................................... 3
CAUTION
MICROWAVE RADIATION
PERSONNEL SHOULD NOT BE EXPOSED TO THE
MICROWAVE ENERGY WHICH MAY RADIATE FROM
THE MAGNETRON OR OTHER MICROWAVE
GENERATING DEVICE IF IT IS IMPROPERLY USED
OR CONNECTED. ALL INPUT AND OUTPUT
MICROWAVE CONNECTIONS, WAVEGUIDES,
FLANGES, AND GASKETS MUST BE SECURE.
NEVER OPERATE THE DEVICE WITHOUT A
M I C R O W A V E E N E R G Y A B S O R B I N G L O A D
A T T A C H E D . N E V E R L O O K I N T O A N O P E N
WAVEGUIDE OR ANTENNA WHILE THE DEVICE IS
ENERGIZED.
1. ADJUSTMENT PROCEDURES
TO AVOID POSSIBLE EXPOSURE TO MICROWAVE
E N E R G Y L E A K A G E , T H E F O L L O W I N G
ADJUSTMENT OF THE INTERLOCK SWITCHES
S H O U L D B E M A D E O N L Y B Y A U T H O R I Z E D
SERVICE PERSONNEL.
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 forward
and pull backward until there is about zero gap between the
Latch Lever and switch body on the Primary Interlock Switch
and at the same time there is about zero gap between the Door
Latch 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 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, according to “
CHECKOUT PROCEDURE FOR SWITCHES
”
on page 6.
(6) Make sure the microwave energy leakage is below the limit of
the regulation ( 5mW/cm
2
) when measured with a detector.
(All service adjustments must be made for
minimum microwave energy leakage readings.)
- TABLE OF CONTENTS -
Lever Stopper
Door
Sensing
Switch
Door
Latch
Interlock
Monitor
Switch
Primary
Interlock
Switch
Screws
Latch
Lever
Figure 1
- 1 -
