16
Microwave service manual – Model:
microMD UK
Components
Test procedure
Results
Fuse
Check for continuity of the fuse with a
multi-meter.
Normal
Abnormal
Note: If the fuse is blown, check the primary, the secondary, and the
monitor switches, H.V.D. and H.V.C. before replacing the fuse. If the fuse
is blown by improper switch operation replace the defective switch and
the fuse at the same time. Replace just the fuse if the switches operate
normally.
Thermal cut-out
Below
specified
temperature
Above
specified
temperature
L.V.Transformer of P.C.B
(Refer to schematic diagram)
Check for P.C.B. connector.
* Disconnect the 3 pin
connector from P.C.B.
Normal
Abnormal
Relay 2, relay 3 of P.C.B.
(Wire leads removed)
Note: Relay
Relay 1: Fan motor
Turntable motor
Oven lamp
Relay 2: Microwave
Cooking
Start
OFF
13
5
Relay 2
Relay 1
