Sharp SJ-WS320TS - Page 26

SJ-WS320T-S
26
After approx. 15 sec., the voltage measured
across and of CN1
(SJ-WS320T/RP320T) or
across and of CN1
(SJ-WP320T/RM320T/WM322T) on the
main PWB is equal to supplied voltage?
(e.g. 240 V)
(DEF-thermistor system diagnosis)
Power OFF
Replace DEF-thermistor.
Replace main PWB.
NG?
NG?
NO
NO
YES
YES
Remove 6P connector from E.V.
cover Assy and measure the
thermistor resistance between
and .
.03 / .63
.04 / .64
(Outside temperature - thermistor system diagnosis)
Replace Display-PWB.
Outside
temperature thermistor
is installed on
Display-PWB ass'y.
(Defrosting diagnosis)
.07
Replace main PWB.
Replace fuse Assy.
Replace
defrost heater.
NO
YES
NO
YES
YES
NO
YES
NO (Open)
Forced defrosting (Measurement is impossible when
DEF-thermistor is set at 10°C or higher because
defrosting ends immediately)
Disconnect CN1 from the main PWB.
Measure the resistance
between and of CN1
(SJ-WS320T/RP320T) or
between and of CN1
(SJ-WP320T/RM320T/WM322T)
on the wiring
Check defrost heater wiring for loose
connection or disconnection.
Check cause of defrosting failure
· Check door packing
· Check mounting seal of E.V. cover Assy
[
3
]
[
4
]
[
5
]
5.8
approx. 370
(defrost heater 130W)
5
5
6
Turn power OFF. After approx. 30 sec.,
open the refrigerating room door and
re-energize. (Buzzer beeps continuously)
Between 6P connector and on
E.V. cover Assy is carrying current?
Resistance of 4P connector between
1
and 2 on E.V. cover ass’y is normal? (370 )
For the resistance of the thermistor,
refer to [8] 5. CONVERSION TABLE
BETWEEN TEMPERATURE AND
RESISTANCE VALUE
Power off