Service manual

Component Specifications
CAUTION
!
To avoid electrical shock, personal injury, or death, disconnect power to unit and discharge capacitor before
servicing, unless testing requires power.
©2005 Maytag Services
16026267 9
Illustration Component Testing Results
Fan motor
Disconnect wires from terminals.
Measure continuity from:
Terminal to terminal..........................
Approximately 49 Ω
Heater fan motor
Disconnect wires from terminals.
Measure continuity from:
Terminal to terminal..........................
Approximately 29.5 Ω
Relay 2
Disconnect wires from terminals.
Measure resistance at terminals:
Idle state...........................................
Microwave state ...............................
Infinite
Continuity
Relay 4
Disconnect wires from terminals.
Measure voltage at terminals:
Idle state...........................................
Convection state...............................
Infinite
Continuity
COM
NC
NO
Oven lamp switch
Disconnect wires from terminals.
Measure continuity from:
COM to NO.......................................
Open infinite, Closed continuity
Thermal cutout
Disconnect wires from terminals.
Measure resistance across terminals...
Oven TCO
This TCO will reset by itself:
ACM1580....................................
JMC9158 ....................................
Continuity
Open at 230°F and closed at 140°F
Open at 302°F and closed at 140°F
Thermistor
Disconnect wires from terminals.
At room temperature. (68°F − 86°F)
Measure resistance across terminals.
Terminal 1 − 3 .................................
Approximately 255 KΩ
Sensor assembly
Disconnect wires from terminals.
Measure resistance across terminals.
Terminal 1 − 3 .................................
Terminal 1 − 2 .................................
Terminal 2 − 3 .................................
Approximately 3 KΩ
Approximately 6 KΩ
Approximately 3 KΩ
COM
NC
NO
Monitor interlock
Disconnect wires from terminals.
Measure resistance at following
terminals:
NC − COM........................................
NOTE: When line fuse is blown replace
monitor, primary, and secondary
interlock switches.
Door open continuity, door closed
infinite.
COM
NC
NO
Primary interlock
Disconnect wires from terminals.
Measure resistance at following
terminals:
NO − COM........................................
NOTE: When line fuse is blown replace
monitor, primary, and secondary
interlock switches.
Door open infinite, door closed
continuity.
COM
NC
NO
Secondary interlock
Disconnect wires from terminals.
Measure resistance at following
terminals:
NC − COM........................................
NOTE: When line fuse is blown replace
monitor, primary, and secondary
interlock switches.
Door open continuity, door closed
infinite.