Samsung AD26A1C13 Service Manual page 13

3-2-5 When the UP/DOWN Louver Moter Does Not Operate.(Initial Diagnosis)
1) Checklist :
(1) Is input voltage normal?
(2) Is the UP/DOWN louver motor properly connected with the connector (CN61)?
2) Troubleshooting procedure
Remove power cord and plug in again in approx. 5 seconds.
Is operating lamp blinking?
Does operation start when swing button of the remote control unit
Voltage at pin #33-#36 of micom (ICO4) change?(Squarewave)
Volatge at pin #13, #14, #15, #16 of IC05 (KID65003)
change?(Squarewave)
UP/DOWN louver motor is faulty.
12
Y
pushed?
N
Y
Y
Y
Check as in the procedure "No Power parts".
Refer to page 12.
Y
Normal
N
Micom (IC04) is faulty.
N
Driver IC05 (KID65003) is faulty.