Jenn-Air JMD2124WS Technical Education - Switch Checkout Procedures
6-2
PRIMARY SECONDARY AND MONITOR INTERLOCK
SWITCH CHECKOUT PROCEDURES
3
Parts Layout
(not to scale)
(+) Continuity (-) No Continuity
NOTE: These diagrams are not intended to show a complete circuit; they represent the position of switches during “DRAWER OPEN” or
“DRAWER CLOSED” (continuity checks only).
Drawer Closed
Drawer Open
1. Unplug microwave oven or disconnect power.
2. A definite “click” can be heard when the microwave oven
drawer is unlatched.
NOTE: Hold the drawer in a closed position and the pull the
drawer open. This causes the latch leads to rise, making it
possible to hear the “click” as
the drawer switches operate.
3. Visually check the drawer and cavity face plate for damage
(dents, cracks, signs of arcing, etc.).
4. Carry out any remedial work that is necessary before
operating the oven.
A. Cavity thermostat
B. Magnetron
C. Stirrer motor
D. Cavity light
E. Third drawer switch
F. Drawer sensing switch
G. Front drawer switch
H. H.V. capacitor
I. H.V. diode
J. Rear drawer switch
K AC line filter
L. H.V. transformer
M. Secondary interlock switch
N. Monitor interlock switch
O. Cooling fan motor
Primary, Secondary, and Monitor Interlock Switch Checkout Procedures
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Primary
Interlock
1. Unplug microwave oven or disconnect power.
2. Disconnect the wires at the Primary Interlock Switch.
3. Check the terminals.
-
+
Secondary
Interlock
1. Unplug microwave oven or disconnect power.
2. Disconnect pin connector at the electronic control.
3. Check from the orange/black wire (pin 7) to the black/brown wire (pin 8).
-
+
Monitor
Interlock
1. Unplug microwave oven or disconnect power.
2. Disconnect the common terminal (white/white wire) and the normally
closed terminal (red/brown wire).
3. Check the terminals
+
-
A
B
C
D
E
F
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N
M
L
K
Monitor
Interlock
Switch
Secondary
Interlock
Switch
Primary
Interlock
Switch
(NC)
(NO)
(NO)
(NC)(NO)
L
N
(NC)
Monitor
Interlock
Switch
Secondary
Interlock
Switch
Primary
Interlock
Switch
(NC)
(NO)
(NO)
(NC)(NO)
L
N
(NC)