Component Location (Not To Scale) - Whirlpool WML55011HW Service Manual

COMPONENT TESTING (Cont.)
Output Test
1. Fill the measuring cup with 2 cups (500 mL) of 70°F (21°C) tap
water.
2. Stir the water with the thermometer to ensure uniform
temperature. Add warm or cool water to bring the water to
the correct temperature.
3. Place the measuring cup in the center of the microwave oven
cavity.
4. Operate the microwave oven on high power for 1 minute.
5. Remove the measuring cup and stir the water with the
thermometer for about 20 seconds.
6. Record the temperature of the water.
Y
3-8 n Low Profile Microwave Hood Combination
For Service Technician Use Only

Component Location (Not to Scale)

Z A A
X
W
U
V
S
A. Main fuse 20 A
B. Motor capacitor
C. Cement resistor
D. H.V. capacitor
E. Magnetron
F. Hood light driver
G. Magnetron Thermostat - opens at 257° F
(125° C ), closes at 203°F (95°C )
H. Hood motor
I. Cavity light driver
J. HV transformer
K. Open door motor
L. Cooling fan motor
M. NTC sensor
N. ACU
7. Refer to the model serial tag on the microwave oven to
acquire wattage output rating of the microwave oven.
8. Using the following chart, determine if the output of the
microwave oven is within the range listed based on the line
voltage and wattage rating of the microwave oven.
Water Temperature for Line Voltage and Wattage Rating
Voltage 700 W
120 V 96°F to 102°F
(36°C to 39°C)
108 V 91°F to 97°F
(33°C to 36°C)
T
P
R
Q
O. Touch panel
P. Door open switch
Q. Secondary interlock switch
R. Door interlock switch
S. Monitor interlock switch
T. Primary interlock switch
U. Hood control board
V. Turntable motor
W. Hood (cooktop) light
X. Cavity light
Y. Hood motor
Z. Motor capacitor
AA. AC filter
AB. Cavity thermostat-opens at 275°F
(135°C ), non-resettable
AC. Filter board
1000 W 1200 W
110°F to 116°F 124°F to 130°F
(43°C to 47°C) (51°C to 54°C)
101°F to 107°F 111°F to 117°F
(38°C to 42°C) (44°C to 47°C)
AC
A
C
AB
B
D
F
H
G
E
I
J
K
L
N
M
O