99Samsung Electronics
Troubleshooting
8-3-6 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
Yes
No
Yes
Check as in the procedure "No Power parts".
Refer to page 96.
Normal
Remote control power cord and plug in again in approx. 5 seconds.
Yes
Up/Down louver motor is faulty.
Is the operation icon( ) lamp
flickering with the sound of "ting"?
Does operation start when swing button of the
remote control unit pushed?
No
No
Micom (IC04) is faulty.
Voltage at pin #26~#29 of micom (IC04) change?
(Squarewave)
Yes
No
Driver IC06(ULN2003A) or
IC07(ULN2003A) is faulty.
Voltage at pin #10~#12 of IC06, #16 of IC07(ULN2003A)
change? (Squarewave)
DB98_20402A(1)_2 10/26/04 3:27 PM Page 99
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