Sharp Plasmacluster SJ-F800SPBK, Service Manual, Page: 22 / 64

SJF800SPSL
9 – 5
Turn OFF and ON power.
Fan locked?
Check position of fan.
Replace F fan motor.
Replace main PWB.
YES
YES
NO
NO
NO
YES
Measure voltage between and
of CN5 on the main PWB.
CN5 - : Approx. 14 V
- : Approx. 2~4 V
EE 08 / EH 66
(F fan motor system diagnosis)
EE 09 / EH 67
(C fan motor system diagnosis)
EE 10 / EH 68
(R fan motor system diagnosis)
F fan motor
rotates?
Check cause of defrosting
failure
· Dislocation of fan
· Check door packing
· Installation of E.V. cover Assy
· Defective seal
(If OK)
Replace C fan motor.
Adjust and power ON again.
Fan locked?
NO
YES
NO
YES
Measure voltage between and
of CN5 on the main PWB:
Approx. 9 to 13 VDC?
Loose connection or disconnection of
C fan motor system (motor connector
voltage)
Replace main PWB or C fan motor.
(If OK)
Replace R fan motor.
Adjust and power ON again.
Fan locked?
NO
YES
NO
YES
Measure voltage between and
of CN4 on the main PWB:
Approx. 9 to 13 VDC?
Loose connection or disconnection of
R fan motor system (motor connector
voltage)
Replace main PWB or R fan motor.
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