Jenn-Air JMC2427IM Fiche Technique page 16

FOR SERVICE TECHNICIAN'S USE ONLY
Cooling Fan Relay Logic
The microwave oven blower stays On during cooking functions and may stay On for a few minutes after the cooking function has ended.
Component Serviceable Side
Appliance Top
Manager
Cavity Top
Thermostat
Magnetron Top
Fan Motor
Turntable Bottom
Motor
Component Testing Chart - Microwave
Procedure
Check wiring to microwave appliance manager:
1.
Unplug the microwave oven or disconnect power.
2. Visually inspect connectors on the microwave appliance manager,
P1, P2, P8, P21, P22, P23, P26, P354, P355 and the top
connectors (relays 4903, 4904 and 4905) to see whether there are
signs of overheating or any signs of failure due to loose wires, bad
crimping, etc.
3. Reassemble all parts and panels before operating.
4. Plug in microwave oven or reconnect power.
1. Unplug microwave oven or disconnect power.
2. Remove wire leads.
3. Measure resistance.
4. Replace wire leads.
5.
Reassemble all parts and panels before operating.
6.
Plug in microwave oven or reconnect power.
1.
Unplug microwave oven or disconnect power.
2. Remove wire leads.
3. Measure resistance (ohmmeter scale: Rx1).
4. Replace wire leads.
5. Reassemble all parts and panels before operating.
6.
Plug in microwave oven or reconnect power.
1. Unplug microwave oven or disconnect power.
2.
Remove wire leads.
3. Measure resistance (ohmmeter scale: Rx1).
4. Replace wire leads.
5. Reassemble all parts and panels before operating.
6. Plug in microwave oven or reconnect power.
Results - Resistance
Normal = Continuity
Abnormal = Infinite
Normal = 15 Ω
Abnormal = Infinite
Normal =2500 Ω
(approximately)
Abnormal = Infinite
16
Component Location
K
W
F
I