TROUBLE SHOOTING GUIDE
C O N DITIO N
C H EC K
R E SU LT
N o
C on tinuity
C on tinuity
C on tinuity in
ba ckw ard
direc tion
C on tinuity
0 or
Ω
N o
C on tinuity
N o
C on tinuity
0 V
A pp ro x
13 VD C
C A US E
D efec tive
high voltage
trans fo rm er
D efec tive
high voltage
rec tifier
D efec tive
m a gne tro n
D efec tive
m a gne tro n
D efec tive
high voltage
trans fo rm er
D efec tive
high voltage
trans fo rm er
D efec tive
tou ch co ntrol
circuit
F aulty
co ntacts o f
R E LAY
(R Y 3) o r o pe n
relay co il
R E M E D Y
R ep la ce
R ep la ce
R ep la ce
R ep la ce
R ep la ce
R ep la ce
R ep la ce
R ep la ce
N o m icrow ave
osc illation
C hec k co ntinu ity of h igh
voltage fuse
C hec k co ntinu ity of h igh
voltage rectifier in
forw a rd a nd bac kw a rd
direc tion w ith D C
m eg ger
C hec k co ntinu ity of h igh
voltage ca pacito r
term ina ls w ith w ires
rem ove d
C onn ec t m eg ger le ads to
m ag netron te rm in al and
m ag netron bod y
C hec k resistance o f
prim ary a nd seco n da ry
coil of high v olta ge
tra nsform er
C hec k co ntinu ity of
m ag netron w ith w ire s
rem ove d
C hec k co ntinu ity of
filam ent te rm inal of h igh
voltage trans form er
C hec k D .C . v oltag e
be ing su pplie d to
R E L AY (R Y 3) coil
R eplac e high vo lta ge fuse
(TROUBLE 3) N o m icrowave oscillation even though fan m otor rotates.
