Samsung MH18ZC1(C2)-09 Service Manual page 35

Troubleshooting
5-4-6 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.
Does operation start when swing button of the remote con-
Voltage at pin #33-#36 of micom (ICO4)
Volatge at pin #13, #14, #15, #16 of IC05 (KID65003)
UP/DOWN louver motor is faulty.
5-12
Is operating lamp blinking?
Y
trol unit pushed?
N
change?(Squarewave)
Y
change?(Squarewave)
Y
Y
Check as in the procedure "No Power
parts". Refer to page 5-7.
Y
Normal
N
Micom (IC04) is faulty.
N
Driver IC05 (KID65003) is faulty.
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