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R-1010ETE
|
Cause
Table
2
Diagnosis
Remedy
Parts
Magnetron
1) Open magnetron
heater.
Check continuity of magnetron
heater with wires removed
using
multimeter.
!f there
is no
continuity,
magnetron
heater is open.
Replace magnetron.
2) Shorted
magnetron
Connect megger leads to magnetron terminals and magnetron
body.
If there is contiuity, magnetron is defective.
(In this
event. main fuse will be blown.)
Replace magnetron.
Rectifier
Defective rectifier
Check
continuity
of recrifier in forward and backward
di-
rection with DC megger.
If there is continuity in backward
direction, rectifier is defective.
(In this event, high-voltage capacitor will be come hot.)
Replace rectifier.
H.V
transformer
Open coil of
H.V. transformer
Check
primary
coil and secondary
coil for continuity.
If
there is no continuity, transformer is defective.
Replace H.V.
transformer.
H.V.
capacitor
Secondary
interlock
switch
Primary
interlock
switch
|
Shorted H.V.
capacitor
Poor contact of
secondary interlock
switch
Poor contact of
primary interlock
switch
Relay (3)
Magnetron
thermostat
or oven
thermostat
Defective relay (3)
1) Magnetron
thermostat open.
2) Oven thermostat
open.
Check continuity of capacitor terminals with wires removed.
lf there
is continuity,
capacitor
is defective.
If capacitor
shorts, fuse is blown out.
Table 3
Diagnosis
Check the terminals for continuity with wires removed using
multimeter, pressing switch ON and OFF repeatedly.
Check
realy
terminals for continuity
with
wires
removed
and energizing relay coil.
Sf there is no continuity between
terminals, relay is defective.
Check
thermostat
terminals
for continuity
with wires re-
moved
using multimeter.
If there is no continuity between
terminals, thermostat is defective.
—~16—
Replace H.V.
capacitor.
Replace
or adjust.
Replace DC relay (?).
Replace relay (3).
Replace thermostat.
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