High Voltage Capacitor; High Voltage Diode; Adjustment Of Primary Sw Itch, Door Sensing Sw Itch And M Onitor Sw Itch - Samsung M 735 Service Manual

Alignment and Adjustments

5-3 High Voltage Capacitor

1. Check continuity of the capacitor with meter set at the highest ohm scale.
2. Once the capacitor is charged, a normal capacitor shows continuity for a short time, and then indicates
10MΩ.
3. A shorted capacitor will show continuous continuity.
4. An open capacitor will show constant 10MΩ.
5. Resistance between each terminal and chassis should read infinite.

5-4 High Voltage Diode

1. Isolate the diode from the circuit by disconnecting its leads.
2. With the ohm-meter set at the highest resistance scale, measure the resistance across the diode terminals.
Reverse the meter leads and read the resistance. A meter with 6V, 9V or higher voltage batteries should be
used to check the front-to back resistance of the diode, otherwise an infinite resistance may be read in both
directions. The resistance of a normal diode will be infinite in one direction and several hundred KΩ in the
other direction.

5-5 Adjustment of Primary Sw itch, Door Sensing Sw itch and M onitor Sw itch

For continued protection against radiation hazard, replace parts in accordance w ith the w iring diagram and be sure to use the correct
part number for the follow ing sw itches.: Primary and secondary interlock sw itches and the interlock monitor sw itch all together. Then
follow the adjustment procedures below . After repair and adjustment, be sure to check the continuity of all interlock sw itches and the
interlock monitor sw itch.
1. When mounting Primary switch and Interlock Monitor
switch to Latch Body, consult the figure below.
2. NOTE: No specific adjustment during installation of
Primary
switch and Monitor switch to the latch body is
necessary.
3. When mounting the Latch Body to the oven assembly,
adjust to the Latch Body by moving it so that the oven
door will not have any play. Check for play in the door
by pulling the door assembly. Make sure that the latch
keys move smoothly after adjustment is completed.
Completely tighten the screws holding the Latch Body
to the oven assembly.
4. Reconnect to Monitor switch and check the continuity
of the monitor circuit and all latch switches again by
following the components test procedures.
5. Confirm that the gap between the switch housing and
the switch actuator is no more than 0.5mm when door
is closed.
5-2
Precaution
Key Door
Primary sw itch
M onitor sw itch (COM -NC)
M onitor sw itch (COM -NO)
Secondary sw itch
Primary Interlock Sw itch
Lever Door (A)
Secondary
Sw itch
Interlock
M onitor
Sw itch
Lever Door(B)
Body Latch
Door Open Door Closed
∞
0
∞
0
∞
0
∞ 0
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