Panasonic NN-ST34HMYTE, Service Manual

Page: 21 / 41

5-10
COMPONENTS TEST PROCEDURE RESULTS
1 3 5
Relay 2
Relay 1
FUSE
THERMAL
CUT-OUT
RELAY 2 OF P.C.B.
(Wire leads removed.)
Note: Relay
Relay 1: Fan motor
Turntable motor
Oven lamp
Relay 2: Microwave
Check for continuity of the fuse with an
multi-meter.
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.
Check for P.C.B. connector.
Normal Abnormal
Cooking Start OFF
Below specified
temperature
specified
temperature
Above
L.V.Transformer of P.C.B
Disconnect the 3 pin
connector from P.C.B.
*
Normal Abnormal
(Refer to schemetic diagram)