DISASSEMBLY INSTRUCTIONS
- OVEN MUST BE DISCONNECTED FROM ELECT-
RICAL OUTLET WHEN MAKING REPLACEMENTS,
REPAIRS,
ADJUSTMENTS AND CONTINUITY
CHECKS BEFORE PROCEEDING WITH ANY REPAIR
WORK AFTER DISCONNECTING. WAIT AT LEAST
1 MINUTE, UNTIL THE CAPACITOR IN THE HIGH-
VOLTAGE AREA HAS FULLY DISCHARGED.
REMOVING LATCH INTERLOCK SWITCH AND
DOOR INTERLOCK SWITCH
(See Figures 1 and 2 on page 1)
(1)
(2)
(3)
--
(4)
Disconnect all lead wires from the latch interlock
switch and the door interlock switch.
Remove 2 screws securing the lever stopper.
Pull the switches out of lever stopper while pushing
and spreading 2 latches each securing the switches.
Make necessary adjustment, and make microwave
energy leakage check according to “CHECK OUT
PROCEDURE FOR SWITCHES” on page 1, after
it is replaced with new one, and check proper opera-
tion of it according to “CHECK OUT PROCEDURE
FOR SWITCHES” on page 8
REMOVING INTERLOCK MONITOR AND DOOR
SENSING SWITCH
(See Figures 1 and 2 on page 1)
(1)
(2)
(3)
Disconnect the lead wires from the interlock Moni.
tor switch and door sensing switch.
Remove 1 screw securing these switches.
Make necessary adjustment of not only these 2
switches but also the latch interlock switch and
door interlock switch, make microwave energy
leakage check according to “l. ADJUSTMENT
PROCEDURES” on page 1, after it is replaced with
new one, and check proper operation of it according
to “CHECK OUT PROCEDURE FOR SWITCHES”
on page 8
WHEN REPLACING ANY DOOR MICROSWITCH,
REPLACE WTIH THE SAME TYPE SWITCH
SPECIFIED ON THE PARTS LIST.
REMOVING FUSE
Remove the 15A fuse with a screwdriver.
Remove the 1.6A fuse by pushing and twisting counter
clock wise the the Fuse Holder.
NOTES
“l. ADJUSTMENT PROCEDURE” on page 1,
when the latch interlock switch or the interlock
monitor switch is repaired and replaced.
– If the latch interlock switch is defective, re-
place not only the latch interlock switch but also
the interlock monitor switch. Then install a new
1.6A fuse.
– If the latch interlock switch and the interlock
monitor switch operate properly, determine which
of the followings is defective: high voltage capaci.
tor, high voltage transformer, step-down trans.
former, blower motor or magnetron,
—
If the high voltage diode is defective, replace not
only the high voltage diode but also the fuse diode.
D. REMOVING DISPLAY CIRCUIT BOARD
(1) Disconnect all lead
wires of the Control panel from
the Control P.C. B and Power P.C. B,
(2) Remove 4 screws securing the Control panel A’ssy
to the oven cavity.
(3) push UP and Pull out the Control panel A’ssy.
(4) Remove 4 screws securing the Dispaly P.C.B.
(5) Take out the Display P.C.B. and
push up the lever
end of the plastic fastener and remove the FPC
connector from the connector socket S301.
When replacing the 1.6A fuse, be
sure to use an
exact repair part.
– If the 1.6A fuse blows immediately, check the
latch
interlock switch and the interlock monitor
switch according to “CHECKOUT PROCEDURE
FOR SWITCHES” on page ‘8, and make sure to
check the microwave energy leakage according to
–12–
CAUTION:
When replacing new Display P.C. B., please take big care
that all 10 LED heads should exactly be inserted into
the square holes of control frame all at once.
Never force to push any LED lead in the P.C. B.
E. REMOVING MAGNETRON
(1) Remove 2 screws securing the thermal Iimitter.
(2) Disconnect 2 lead wires from the magnetron ter-
minals by removing 2 connectors.
(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) Take out the magnetron VERY CAREFULLY.
f
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 gasekt in the correct position and be
sure that the gasket is in good condition.
—
Make sure the microwave energy leakage is below
the limit of the regulation (5 mW/cm2 ] when
measured with a detector.