Samsung LS3165H52HR, Service Manual

Page: 55 / 88

57
TROUBLESHOOTING
4-14) When Alarm Sound continues (Buzzer Sound)
Start
Romove causes after
comprehending the
condition of interference
by door gasket or food etc
Door is ajar
Closed well
Door is closed
completely?
Replace Door switch
YES
YES
Is water penetrated into
the door switch?
NO
Repair wire connection and
door switch
NO
Door sensing voltage
changes as the door gets
open or closed.
YES
Repair the defective contact
of the connector or insert
the connector properly
NO
The connector(CN50) is
inserted properly
YES
Replace REED S/W
NO
Door S/W is good.
MAIN PBA & DOOR S/W are good
Separate the Door S/W
and check its resistance
change according to s/w
on(0
Ω ) and off( ∞Ω )
F-Door sensing : CN50 #8-#9
R-Door sensing : CN50 #8-#10
R-Homebar-Door sensing : CN50 #8-#11
Normal State
- Door Open 5V
- Door Closed 0V
Start
Cancel Forced Operation
or Forced Defrost, or
Re-plug the unit
YES
NO
2) When "Beeping" sound continues
1) When “DingDong” sound continues.
Forced Operation
or Forced Defrost is
selected
Panel PBA is normal
NO
After plugging
in again, it sounds
continuously
YES
Replace Panel PBA