Daewoo KOR-636T, Руководство пользователя

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TROUBLE SHOOTING GUIDE
( TROUBLE 3 ) No m icrowave oscillation even though fan m otor rotates.
Continuity
Continuity in
backward
direction
0 Ω
or
No
Continuity
No
Continuity
0 V
Approx
24 VDC
Defective
high voltage
transform er
Defective
high voltage
rectifier
Defective
m agnetron
Defective
m agnetron
Defective
high voltage
transform er
Defective
high voltage
transform er
Defective
touch control
circuit
Faulty
contacts or
RELAY
(RY1) or open
relay coil
Replace
Replace
Replace
Replace
Replace
Replace
Replace
Replace
o m icrowave
oscillation
C heck continuity of high
voltage rectifier in
forw ard and backward
direction with D C
m egger
C heck continuity of high
voltage capacitor
term inals w ith w ires
rem oved
C onnect m egger leads to
m agnetron term inal and
m agnetron body
C heck resis tance of
prim ary and secondary
coil of high voltage
transform er
C heck continuity of
m agnetron w ith w ires
rem oved
C heck continuity of
filam ent term inal of high
voltage transform er
C heck D .C. voltage
being supplied to
R ELAY (R Y1) coil
Continuity
C heck continuity of high
voltage fuse
N o C ontinuity
R eplace high voltage fuse