Whirlpool MH2175XSB Service Guide - Page 29

Removing The Thermostats And Thermistor

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Removing the Thermostats and Thermistor To remove the magnetron thermostat: 1. Remove 2 screws and disconnect the wire connectors. Wire Connectors Screws IMPORTANT: When you work on the microwave oven, be careful when handling the sheet metal parts. Sharp edges may be present, and you can cut yourself if you are not careful. 1. Unplug microwave oven or disconnect power. 2. Remove the outer cabinet (see page 4-10). To remove the Cavity thermostats: 1. Slide the thermostat up and out from behind the mounting bracket. Remove the wire connectors. 3. CAUTION: Discharge the high-voltage capacitor with a 20,000 Ohm resistor to chassis ground. Magnetron thermostat Cavity thermostat 2 Cavity thermostat 1 NTC thermistor Wire Connectors To remove the NTC thermistor (base thermistor): 1. Remove one screw and remove the connection at P4 of the microcomputer board (see illustration on page 4-4). 4-11

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4-11
REMOVING THE THERMOSTATS AND THERMISTOR
IMPORTANT:
When you work on the microwave
oven, be careful when handling the sheet metal
parts. Sharp edges may be present, and you
can cut yourself if you are not careful.
1. Unplug microwave oven or disconnect power.
2. Remove the outer cabinet (see page 4-10).
3. CAUTION:
Discharge the high-voltage ca-
pacitor with a 20,000 Ohm resistor to chassis
ground.
Cav±ty
thermostat 1
Cav±ty
thermostat 2
NTC
therm±stor
Magnetron
thermostat
To remove the magnetron thermostat
:
1. Remove 2 screws and disconnect the wire
connectors.
To remove the Cav±ty thermostats:
1. Slide the thermostat up and out from behind
the mounting bracket.
Remove the wire con-
nectors.
To remove the NTC therm±stor (base therm±s-
tor):
1. Remove one screw and remove the connection
at P4 of the microcomputer board (see illustra-
tion on page 4-4).
Screws
W±re
Connectors
W±re
Connectors