High Voltage Capacitor; Diode; Transformer; Noise Filter Board - Amana MVH140E Service Manual

Disassembly Procedures
!

High Voltage Capacitor

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" section).
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.
WARNING
Latch board
Secondar y
interlock switch
Interlock
monitor switch
imar y
Pr
interlock switch
To avoid the risk of electrical shock, personal injury, or
death, disconnect power to oven and discharge
capacitors before following any disassembly procedure.

Diode

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

Transformer

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

Noise Filter Board

Noise filter board is located behind the grille on the right
side.
1. Disconnect power and remove grille, (see "Grille
section).
2. Disconnect wire terminals to the board.
3. Remove screws securing circuit board to oven
chassis and remove board.
4. Reassemble in reverse order.

Fuse

Fuse is located behind the grille on the right side of the
noise filter board.
Fuse Removal
1. Disconnect power and remove grille, (see "Grille
section).
2. Remove and replace fuse, 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.
35
CAUTION
RS2100005 Rev. 0