When The Left And Right Adjusting Plate Does Not Operate - Samsung APH180HD Service Manual

5-3-3 When the left and right adjusting plate Does not Operate

1) Trouble cause
Disconnection, wrong connection or bad contact of connected wire to the left and right adjusting motor.
Left and right adjusting motor defect.
Main PCB defect(RY83,IC03, MICOM)
2) Check items
Is the wire connecting the main PCB to the left and right adjusting motor good?
3) Sequence of check
Tu rn off the power, and then turn it on in 5 seconds
Select the right and left swing mode by remocon
after opration on.
Does the right and left adjusting plate work corre c t l y ?
It is high when checking the output wave of the pin no. 13 of
MICOM(IC01)? (Check after swing to the left and right.)
Is the voltage across the relay (RY83)DC 12V?
(Check after swing to the left and right.)
Is the voltage across the main PCB of CN78AC 220V?
(Check after swing to the left and right.)
Is the voltage across the left and right adjusting motor AC 220V?
(Check after swing to the left and right.)
Check the left and right adjusting motor and replace it.
Samsung Electronics
N
Y
Y
Y
Y
Y
Left and right adjusting motor
under normal operation.
N
Check MICOM(IC01) and replace it.
N
Check IC03 and replace it.
N
Check the wire connection error or disconnection,
bad contact.
N
Check the wire disconnection or bad contact.
Troubleshooting
5-5