23
(TROUBLE 3)
No microwave oscillation even though fan motor rotates.
TROUBLE SHOOTING GUIDE
CONDITION
CHECK
RESULT
Continuity
Continuity in
backward
direction
0 Ω
Or infnity
No
Continuity
No
Continuity
0 V
Appro x
15 VDC
CAUSE
Defective
high voltag
transformer
Defective
high voltag
rectifier
Defective
magnetron
Defectiv e
magnetro n
Defective
high voltag
transformer
Defective
high voltage
transformer
Defective
touch control
circuit
Faulty
contacts of
RELAY
(RY1) or open
relay coil
REMEDY
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
No microwave
oscillation
Check continuity of high
voltage rectifier in
forward and backward
direction with DC
megger
Check continuity of high
voltage capacitor
terminals with wire
s
removed
Connect megger leads to
magnetron terminal and
magnetron bod y
Check resistance of
primary and secondary
coil of high voltage
transformer
Check continuity of
magnetron with wires
removed
Check continuity o f
filament terminal of high
voltage transformer
Check D.C. voltage
being supplied to
RELAY (RY1) coil
Continuit y
Summary of Contents for KOR-1A1G0A
Page 5: ...4 EXTERNAL VIEW 1 OUTER DIMENSION 1 KOR 1A1G H 2 KOR 1A4G H...
Page 29: ...28 WIRING DIAGRAM 1 KOR 1A1G H 0A KOR 1A4G H 0A...
Page 34: ...33 PRINTED CIRCUIT BOARD Measure Point...
Page 36: ...35 2 P C B CIRCUIT DIAGRAM PRINTED CIRCUIT BOARD...
Page 41: ...40 EXPLODED VIEW AND PARTS LIST 2 KOR 1A4G H F48 F47 F12 F13 F14 F15...
