5-14
CONDITION
CHECK
RESULT
CAUSE
REMEDY
1. Fuse blows.
Continuity.
No continuity.
Continuity.
Shorted contact at
the primary switch.
Replace primary
and monitor
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 primary
and monitor
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
(TROUBLE 2) Oven does not operate at all ; Display window does not display any figures and
no input is accepted.
NOTE : All these switches must be replaced at the same time. Refer to page 5-6, 5-7
2. Fuse does not
blow.
No continuity.
No continuity.
Replace power
supply cord.
Defective mag-
netron thermostat.
Defective power
supply cord.
Replace mag-
netron thermostat.
Check continuity
of magnetron
thermostat.
Check continuity
of power supply
cord.
Continuity.
Summary of Contents for MS-269T
Page 9: ...SCHEMATIC DIAGRAM 4 3 ...
Page 29: ...6 2 13720D 13213A 14026A 13552A 15006A 13536A 14970A 13581A WTT028 13650A DOOR PARTS ...
Page 30: ...6 3 383EW1 CONTROL PANEL PARTS ...
Page 31: ...6 4 33052A 33112U WTT010 948503 WTT021 WTP013 36549S 33390G 34370T 35889A OVEN CAVITY PARTS ...
Page 32: ...6 5 WSZ085 56912B 55262A 44510A 466001 43500A 43501A 466003 466001 LATCH BOARD PARTS ...
Page 34: ...6 7 WTT021 63302A 63303A 56170D WSZ002 WTT028 WSZ002 647781 65006A BASE PLATE PARTS ...
Page 40: ...8 1 SCHEMATIC DIAGRAM OF P C B ...
Page 41: ...8 2 PRINTED CIRCUIT BOARD KEY P C B MAIN P C B ...
