Samsung Electronics
5-5
Troubleshooting
5-2-4 When the UP/DOWN Louver Motor Does Not Operate. (Initial Diagnosis)
1) Checklist :
(1) Is input voltage normal? (198-264V~)
(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 in 3 minutes and then lamp off?
Normal
Micom (IC01) is faulty.
Driver IC02 (KA2657) is faulty.
Voltage at pin #33-#36 of micom (IC01) change?(Squarewave)
Volatge at pin #10-#13 of IC02
(KA2657change?(Squarewave)
UP/DOWN louver motor is faulty.
Does operation start when swing button of the remote
control unit pushed?
Check as in the procedure "No Power
parts". Refer to page 5-2.
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