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7. DISASSEMBLY INSTRUCTIONS
- THE OVEN MUST BE DISCONNECTED FROM THE
ELECTRICAL OUTLET WHEN MAKING REPLACE-
MENTS, REPAIRS, ADJUSTMENT OR CONTINUITY
CHECKS. BEFORE PROCEEDING WITH ANY RE-
PAIR, WORK , WAIT AT LEAST 1 MINUTE, UNTIL
THE CAPACITOR IN THE HIGH VOLTAGE AREA HAS
FULLY DISCHARGED.
A. REMOVING INTERLOCK SWITCH
(See Figure 1 on page 1)
(1) Disconnect all lead wires from the interlock
switches.
(2) Remove 2 screws securing the lever stopper.
(3) Remove 1 screw securing the switches.
Then pull out the switches.
(4) Make the necessary adjustment, and perform a
microwave energy leakage check according to
“ 1 . A D J U S T M E N T P R O C E D U R E F O R
SWITCHES” on page 1. Check proper operation
according to “CHECKOUT PROCEDURE FOR
SWITCHES” on page 6.
B.REMOVING INTERLOCK MONITOR AND DOOR
SENSING SWITCH
(See Figure on page 1)
(1) Disconnect all lead wires from the interlock moni-
tor switch and door sensing switch.
(2) Remove 1 screw securing the these switches.
Then pull out the switches.
(3) Make the necessary adjustments or replace-
ment of the switch by reversing step (2) and
check microwave energy leakage according to
“ 1 . A D J U S T M E N T P R O C E D U R E F O R
SWITCHES” on page 1. Check proper operation
according to “CHECKOUT PROCEDURE FOR
SWITCHES” on page 6.
WHEN REPLACING ANY DOOR MICROSWITCH,
REPLACE ONLY WITH THE SAME SWITCH SPECI-
FIED ON THE PARTS LIST.
C. REMOVING FUSE
Remove the 10A fuse with screwdriver.
NOTES
- When replacing the 10A fuse, be sure to use the
exact repair part.
- If the 10A fuse blows immediately, check the primary
and secondary interlock switch, the relays RL-3 and
RL-4 (on the control circuit board) and the interlock
monitor switch according to “CHECKOUT PROCE-
DURE FOR SWITCHES” on page 6. Make sure to check
the microwave energy leakage according to “1. AD-
JUSTMENT PROCEDURE FOR SWITCHES” on page
1, when the primary and secondary interlock switches,
the relay RL-3 and RL-4 or the interlock monitor switch
is adjusted or replaced.
- If the interlock switch, the relay RL-3 and RL-4 or the
interlock monitor switch operate properly, determine
which of the following is defective : control circuit board,
high voltage transformer, high voltage capacitor, high
voltage diode or magnetron.
D. REMOVING DISPLAY CIRCUIT BOARD
(1) Disconnect all lead wires on the Control panel
from the Control PCB and Power PCB.
(2) Remove 4 screws securing the Control panel
Ass’y to the oven cavity.
(3) Push up and pull out the Control panel Ass’y.
(4) Remove 4 screws securing the Display PCB.
(5) Take out the Display PCB and push up the lever
end of the plastic fastener and remove the FPC
connector from the connector socket S101.
CAUTION:
When replacing new Display PCB please ensure
that all 10 LED heads are positioned exacty into
the square holes of the control frame at once.
Never force any LED head into the PCB.
E. REMOVING MAGNETRONS
(1) Remove 1 screw securing the thermal
protector .
(2) Disconnect 2 lead wires from the magnetron
terminals .
(3) Remove thermistor (lower magnetron) by
pulling horizontally.
(4) Remove 4 hex nuts (upper magnetron) or 2 hex
nuts (lower magnetron)securing to the
waveguide.
(5) Remove magnetrons.
(6) Take out the magnetron VERY CAREFULLY.
NOTES
- When removing the magnetron, make sure that its
dome does not hit any adjacent parts, or it may be
damaged.
- When replacing the magnetron, be sure to install the
magnetron gasket in the correct position and be sure
that the gasket is in good condition.
- After replacing the magnetron, check the microwave
energy leakage to ensure it is below the limit of
5mW/cm
2
. (For US)
- After replacing the magnetron, be sure to check the
microwave energy with a leakage detector and
confirm it 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. (For CANADA)
