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STEPSTEPSTEPSTEPSTEP
SEQUENCESEQUENCESEQUENCESEQUENCESEQUENCE
Resistance
OK.
Check H.V
. Capacitor or H.V
.
Diode with an Ohm-Meter after
removing lead wir
es.
(See page 5)
Normal
resistance
No
operation.
Check operation of Blower
Motor when
“
ST
AR
T”
key
is touched.
Normal
operation.
Check r
esistance of each
winding after removing
lead wir
es. (See page 4)
H.V
. T
ransfor
mer
.
Resistance
incorr
ect.
Nor
mal H.V
.
Capacitor or
H.V
. Diode.
Replace H.V
.
Transfor
mer
.
Nor
mal H.V
.
Transfor
mer
.
(4) PROBLEM
Low microwave power
output.
b
a
Replace
Magnetron.
Normal
Magnetron.
Defective
H.V
. Capacitor
or H.V
. Diode.
Replace H.V
.
Capacitor or
H.V
. Diode.
Nor
mal H.V
.
Capacitor or
H.V
. Diode.
Normal
operation.
Replace Ther
mal Pr
otector
for Magnetron or Ther
mal
Pr
otector for Cavity.
Nor
mal ther
mal protector for
Magnetr
on or Ther
mal
Pr
otector for Cavity.
Temporarily short
acr
oss ter
minals of
Ther
mal Protector for
Magnetr
on or Ther
mal
Pr
otector for Cavity
by using jumper lead.
No
operation.
Measure r
esistance
of Blower Motor
Approx. 63 ohms.
Replace Contr
ol
Cir
cuit Boar
d.
Nor
mal Control
Cir
cuit Boar
d.
Resistance
incorr
ect.
Replace
Blower
Motor
.
Nor
mal Blower
Motor
.
PROBLEM
3-b
Runs
Runs
Runs
Runs
Runs
Runs
RESULRESULRESULRESULRESUL
TTTTT
