Sanyo SBM-20 Service Manual page 25

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Symptom Procedure
Inspection
Cause Countermeasure
F. "E:OI''( inner
1) Inner case is cooling,
case is high
after start baking
temperature
again.
more than Inner case is
Normalized
40°C when
high temp.
start baking.)
appears in
2) Measure sensor re-
display win-
sistance.
dew.
25°C Approx. 501a2
* Sensor failure Replace sensor
Control board Replace control
failure
board
G. ,!E:)21,
1) Measure sensor re-
(thermistor-
Start
sistance.
open), "E:03"
25°C Approx. 50kC?
(therrnistor-
YES
* Sensor failure Replace sensor
short) , "E:04"
(inner case is
abnormal high
. Control board Replace control
temperature),
failure
board
"E:08' (inner
case is high
temperature
more than 600C
when rising)
appears in dis-
play window.
H.''E:O5° appears
1) Check if heater and
Start
in display win-
heater wiring are in
dew.
normal condition.
YES Heater failure
Replace heater,
(Inner case
or poor con-
or repair wiring
temperature is
nection
not go up
when baking. ) 2) Measure sensor re-
b Sensor failure
sistance.
Replace sensor
25°C Approx. 50kf2
3) Measure control board
voltage.
Control board Replace control
(While motor is
failure
board
operated)
@-@ approx. 5V
Power board Replace power
failure
board
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