5-12
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1. Fuse blows.
Continuity.
No continuity.
Continuity.
Shorted contact at
the primary switch.
Replace fuse,
primary, monitor,
secondary
switches.
No continuity.
Normal.
Defective high
voltage capacitor.
Replace high
voltage capacitor.
Fuse blows again
Defective high volt-
age transformer.
Replace high volt-
age transformer.
Malfunction of the
monitor switch.
Replace fuse,
primary, monitor,
secondary
switches.
Check continuity
of monitor
switch (with
door closed).
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.
Replace fuse
2. Fuse does not
blow.
No continuity.
Continuity.
No continuity.
Defective power
supply cord.
Replace power
supply cord.
Defective
thermostat.
Replace
thermostat.
Check continuity
of thermostat.
Check continuity
of power supply
cord.
(TROUBLE 1) Oven does not operate at all and no input is accepted.
NOTE : All these switches must be replaced at the same time. Refer to page 5-6, 5-7
Summary of Contents for MA-6400B2
Page 25: ...6 2 13552A 13213A 13581A 13720D 14970A 14026A 13536A 13352A DOOR PARTS...
Page 26: ...6 3 24781T 23572A 24510L 250201 24970A 249401 26549T CONTROLLER PARTS...
Page 27: ...6 4 33390G 35889A WSZ185 33112U WTP013 36549S 33052A 948502 WTT010 OVEN CAVITY PARTS WTT020...
Page 28: ...6 5 466001 466003 WTT028 466001 43500A 56912B 55262A WSZ085 SUCTION GUIDE PARTS...
