High Voltage Capacitor Removal; Diode Removal; Transformer Removal; Replacing Fuse - Maytag UMV1152CA Manual

2006 over-the-range domestic microwaves
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Disassembly Procedures
!
W ARNING

High Voltage Capacitor Removal

High voltage capacitor should always be discharged by
shorting a terminal to a chassis ground. The capacitor
has a internal "shunt" resistor, but the mechanical
discharge should always be performed to avoid personal
injury.
High Voltage Capacitor Removal
1. Disconnect power to oven and remove control panel,
see "Control Panel Removal" procedure.
2. Discharge high voltage capacitor by connecting a
jumper wire to the terminal of high voltage capacitor
with the diode connected to it. Connect the other
end of the jumper wire to a well insulated screwdriver
and touch a nearby chassis ground screw.
3. Remove screws that secure capacitor and diode.
4. Slide capacitor mounting bracket out of the slots and
pull outward on capacitor, diode and bracket.
5. Reassemble in reverse order.

Diode Removal

The diode is located next to the high voltage capacitor.
1. Disconnect power to oven and remove control panel,
see "Control Panel Removal" procedure.
2. Discharge high voltage capacitor, see "High Voltage
Capacitor Removal" procedure.
3. Disconnect diode wire terminal from high voltage
capacitor and remove screw securing diode to
ground.
4. Reassemble in reverse order.

Transformer Removal

High voltage transformer can be serviced through the
front of the unit.
Transformer Removal
1. Disconnect power to oven and remove control panel,
see "Control Panel Removal" procedure.
2. Discharge high voltage capacitor, see "High Voltage
Capacitor Removal" procedure.
3. Disconnect and label wire leads from transformer.
4. Remove screws securing transformer and remove out
through the front.
5. Reassemble in reverse order.

Replacing Fuse

The fuse is located behind the grille in line with the
power cord on the right side of the unit.
© 2006 Maytag Services
To avoid risk of electrical shock, personal injury or
death; disconnect power to microwave oven and
discharge the high voltage capacitor before performing
any disassembly procedures.
Fuse Removal
1. Disconnect power and remove grille, see "Grille
Removal" procedure.
2. Remove and replace fuse and reassemble in reverse
order.
Before replacing a blown monitor fuse, test the
primary interlock switch, secondary interlock switch,
monitor switch, and power relay contacts for proper
operation. If the monitor fuse is blown by a failed
switch operation, all switches and printed circuit board
must be replaced.

Magnetron Removal

Magnetron is mounted on the side of the cavity to
provide a top feed single waveguide.
1. Disconnect power to oven and remove grille, see
"Grille Removal" procedure.
2. Remove control panel, see "Control Panel Removal"
procedure.
3. Remove outer case, see "Outer Case Removal"
procedure.
4. Discharge high voltage capacitor, see "High Voltage
Capacitor Removal" procedure.
5. Remove screws securing magnetron to wave guide.
6. Carefully remove the magnetron.
7. Reassemble in reverse order.
NOTE: When replacing the magnetron, make sure the
gasket is in the correct position and in good
condition.
During replacement of magnetron, be certain the R.F.
anode gasket is in place around anode stud.
16027303
!
CAUTION
!
CA UTION
35

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