— 25 —
COMPONENTS
TEST PROCEDURE
RESULTS
FAN MOTOR TOWER
MOTOR
CIRCULATIONS
MOTOR
(Wire leads are
removed)
THERMISTOR
(Disconnect the 6 pin
conncetor CN2 from
PCB)
HEATER ELEMENT
(Wire leads are
removed)
SENSOR
(Disconnect the 3 pin
connector CN4 from
PCB)
Measure the resistance with an ohm-
meter on Rx1 scale.
Figure 34
Measure the resistance across pins 5 &
6 with an ohm-meter on Rx1 scale.
Figure 35
Measure the resistance with an ohm-
meter on Rx1 scale.
Measure the resistance across pins 1 &
2 an ohm-meter on Rx1 scale.
Figure 36
Figure 37
Normal reading:
ohms.
Normal reading:
Approx. 250~350 K ohms at 20°C.
Normal reading:
Approx. 9~12 ohms at 20°C
Normal reading:
ohms at 20°C.
YL
WH
RD
1
2
3
6
5
4
3
2
1
NOTE:
●
A MICROWAVE ENERGY TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS SERVICED FOR
ANY REASON.
●
MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
●
WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE CONNECTOR,
NOT THE WIRES.
1 & 2
2 & 3
20
∞
Fan
Tower
Cir.
30-45
60-75
25-40
Summary of Contents for MV-1155W
Page 8: ...6 OVERALL CIRCUIT DIAGRAM A SCHEMATIC DIAGRAM 7 ...
Page 40: ...CONTROLLER PARTS 38 WTT028 WTT021 WTT021 268711 24810P 26638A 07 23572A 24781M WTT021 EV ...
Page 42: ...LATCH BOARD PARTS 40 WSZ085 43500A 466001 466004 466002 43510A 466003 43501A EV ...
Page 45: ...INTERIOR PARTS III 43 WTT021 53551S 53551L WSZ002 WSZ002 53551R 568772 WTT021 WTT021 EV ...
Page 48: ......
