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R-4A68
4. Strip the blue wire lead of the power supply cord for
15mm lengh from its end.
5. Wind the conductor of the blue wire lead of the power
supply cord and the conductor of the wire lead of the
main wire harness each other.
6. Insert them into the connector. And clamp it.
7. CARRY OUT 4R CHECKS.
15 mm
Connector
CE-230
Blue wire lead of power supply cord
Wire lead of the
main wire harness
Conductor:
Stripped portion
Connector
CE-230
Figure C-3. Power supply cord replacement
1ST. LATCH SWITCH, 2ND. INTERLOCK RELAY CONTROL SWITCH, AND MONITOR SWITCH REMOVAL
1. CARRY OUT 3D CHECKS.
2. Disconnect wire leads from the switches.
3. Remove two (2) screws holding latch hook to oven
flange.
4. Remove latch hook assembly from oven flange.
5. Push outward on the two (2) retaining tabs holding switch
in place.
6. Switch is now free. At this time switch lever will be free,
do not lose it.
Re-install
1. Re-install each switches and switch lever in its place.
The 1st. latch switch and monitor switches are in the
lower position and the 2nd. interlock relay control switch
is in the upper position.
2. Re-connect wire leads to each switch.
Refer to pictorial diagram.
3. Secure latch hook (with two (2) mounting screws) to
oven flange.
4. Make sure that the monitor switch is operating properly
and check continuity of the monitor circuit. Refer to
chapter "Test Procedure" and Adjustment procedure.
1ST. LATCH SWITCH, 2ND. INTERLOCK RELAY CONTROL SWITCH AND MONITOR SWITCH ADJUSTMENT
Figure C-4. Latch Switch Adjustments
LATCH
HEADS
LATCH HOOK
2ND. INTERLOCK
RELAY CONTROL
SWITCH
MONITOR
SWITCH
SWITCH LEVER
1ST. LATCH
SWITCH
If the 1st. latch switch, 2nd. interlock relay control switch and
monitor switch do not operate properly due to a
misadjustment, the following adjustment should be made.
1. Loosen the two (2) screws holding latch hook to the oven
cavity front flange.
2. With door closed, adjust latch hook by moving it back and
forth, and up and down. In and out play of the door
allowed by the upper and lower position of the latch hook
should be less than 0.5mm. The vertical position of the
latch hook should be adjusted so that the 1st. latch
switch and 2nd. interlock relay control switch are activated
with the door closed. The horizontal position of the latch
hook should be adjusted so that the monitor switch is
activated with the door closed.
3. Secure the screws with washers firmly.
4. Check the all switch operation. If a switch has not
activated with the door closed, loosen screw and adjust
the latch hook position.
After adjustment, check the following.
1. In and out play of door remains less than 0.5mm when in
the latched position. First check upper position of latch
hook, pushing and pulling upper portion of door toward
the oven face. Then check lower portion of the latch
hook, pushing and pulling lower portion of the door
toward the oven face. Both results (play in the door)
should be less than 0.5mm.
2. The 1st. latch switch and 2nd. interlock relay control
switch interrupt the circuit before the door can be opened.
3. Monitor switch contacts close when door is opened.
4. Re-install outer case and check for microwave leakage
around door with an approved microwave survey meter.
(Refer to Microwave Measurement Procedure.)
Summary of Contents for R-4A68
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