Interlock Door Latch Switches - Amana MVH140E Service Manual

Disassembly Procedures
!

Interlock Door Latch Switches

Primary switch is operated by bottom latch pawl.
Interlock Switch 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. Test interlock switches before removing, (see testing
procedures).
4. Disconnect and label wire connections.
5. Remove interlock switch.
WIRE COLOR
SYMBOL
WH
BK
BR
RD
BL
PK
N.P
RS2100005 Rev. 0
WARNING
Latch board
Secondary interlock switch
BR(from P .C.B)
BK (from T/T motor )
BK (from noise filter output)
WH( from cooktop lamp )
Monitor interlock switch
RD (from H.V .Transformer)
WH (from H.V .Transformer)
Primary interlock switch
.C.B)
PK(from P
BL (from P.C.B)
COLOR
WHITE
BLACK
BROWN
RED
BLUE
PINK
. Not Provided
To avoid the risk of electrical shock, personal injury, or
death, disconnect power to oven and discharge
capacitors before following any disassembly procedure.
!
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.
Adjusting Interlocks
The interlock monitor and primary switches act as a final
safety switch, protecting the operator from microwave
energy. After adjusting the interlock monitor switch,
verify it is correctly connected.
For door fit and switch operation, switch housing is
adjustable.
1. Disconnect power to oven and remove control panel,
(see "Control Panel" section).
2. Discharge high voltage capacitor, (see "High Voltage
Capacitor" section).
3. Loosen switch housing mounting screws on vertical
flange.
4. Close oven door, move latch board upward toward
the top of the oven and/or away from the door latch
until gaps are less than
5. Hold latch board securely for proper switch operation
and door fit, retighten screws.
6. Open the oven door slowly, watching the switches.
Verify switches release in the following order.
• Primary interlock switch
• Secondary interlock switch
• Interlock monitor switch
NOTE: Adjust the latch board until all switches operate
in proper sequence.
7. Close the oven door slowly, watching the switches.
Verify switches active in the following order.
• Interlock monitor switch
• Secondary interlock switch
• Primary interlock switch
8. When proper sequence of switch has been achieved,
tighten the latch board securely.
!
A microwave leakage test must be preformed anytime
a door assembly is removed, replaced, disassembled
or adjustment of latch board is made.
34
CAUTION
1
/ –inch (0.5 mm).
6
CAUTION