Disassembly Procedures
!WARNING
To avoid the risk of electrical shock, personal injury or death; disconnect power to oven and discharge capacitors before following any disassembly procedure.
Latch Board
Secondary Interlock Switch
WH (from H.V. Transformer) 
YL (from Fan Motor)
WH (from Power Cord)
WH (from Cooktop Lamp)
Monitor Interlock Switch
WH (from H.V. Transformer)
RD (from H.V. Transformer) 
Primary Interlock Switch
PK (from P.C.B) 
BL (from P.C.B) 
ACO1840*, ACO1860*, JMV8196*,
MMV4184*, and MMV5186*
!CAUTION
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 switches, verify connections are correctly connected.
For door fit and switch operation, switch housing is adjustable.
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
•Monitor interlock 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.
•Monitor interlock switch
•Secondary interlock switch
•Primary interlock switch
8.When proper sequence of switch has been achieved, tighten the latch board securely.
!CAUTION
A microwave leakage test must be preformed anytime a door assembly is removed, replaced, disassembled or adjustment of latch board is made.
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" 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.
1.Disconnect power to oven and remove control panel, (see "Control Panel" procedure).
2.Discharge high voltage capacitor, (see "High Voltage Capacitor" procedure).
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
Diode
The diode is located next to the high voltage capacitor.
1.Disconnect power to oven and remove control panel, (see "Control Panel" procedure).
2.Discharge high voltage capacitor, (see "High Voltage Capacitor" procedure).
3.Disconnect diode wire terminal from high voltage capacitor and remove screw securing diode to ground.
4.Reassemble in reverse order.
16021668 Rev. 0 | 22 | ©2002 Maytag Appliances Company |
