Panasonic NN-C69KSMEPG Service Manual page 26

(TROUBLE 2) Oven does not operate at all ; Display window does not display any figures and
no input is accepted.
CONDITION
Check continuity
1. Fuse blows.
of monitor
switch (with
door closed).
Replace fuse
Check continuity
of primary
switch (with
door opened).
Disconnect one
side of the wire
lead connected
from transformer
to the high
voltage
capacitor and
operate the unit.
NOTE : All these switches must be replaced at the same time. Refer to page 5-6, 5-7
2. Fuse does not
Check continuity
blow.
of magnetron
thermostat.
Check continuity
of power supply
cord.
CHECK RESULT
Continuity.
No continuity.
Continuity.
No continuity.
Normal.
Fuse blows again
No continuity.
Continuity.
No continuity.
5-14
CAUSE REMEDY
Malfunction of the Replace primary
monitor switch. and monitor
switches.
Replace primary
Shorted contact at
and monitor
the primary switch.
switches.
Defective high Replace high
voltage capacitor. voltage capacitor.
Defective high volt- Replace high volt-
age transformer. age transformer.
Defective mag- Replace mag-
netron thermostat. netron thermostat.
Defective power Replace power
supply cord. supply cord.