Samsung AQV09NSD Service Manual page 66

12-2-3 When the Up/Down Louver Motor 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
Unplug the power cord and
plug it after 30 seconds
Is STD lamp blinking?
start when swing button
of the remote control unit
pin #30~#34 of micom (IC04)
change?(Squarewave)
pin #2 ~ #5 of CN61(motor connector)
change?(Squarewave)
Up/Down louver motor is faulty.
Samsung Electronics
141 Kinderkamack Rd, Park Ridge, NJ 07656 Tel: 201-782-1782 Fax: 201-782-1783 Web: www.amgair.com Email: info@amgair.com
Yes
Does operation
pushed?
No
Voltage at
Yes
Voltage at
Yes
Air Marketing Group LLC
No
Check as in the procedure
No Power.
Yes
Normal
No
Micom (IC04) is faulty.
No
Driver IC05/06 (ULN2003A) is faulty.
Troubleshooting
12-4