Samsung AQB09JJWC Service Manual page 52

11-2-3 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
pin #2 ~ #5 of CN61(motor connector)
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
Unplug the power cord and
plug it after 30 seconds
Is STD lamp blinking?
Yes
Does operation
start when swing button
of the remote control unit
pushed?
No
Voltage at
pin #30~#34 of micom (IC04)
change?(Squarewave)
Yes
Voltage at
change?(Squarewave)
Yes
Up/Down louver motor is faulty.
No
Yes
No
No
Air Marketing Group LLC
Check as in the procedure
No Power.
Normal
Micom (IC04) is faulty.
Driver IC05/06 (ULN2003A) is faulty.
Troubleshooting
11-4