Samsung AS07A6MA - Setting the On Timer; To Cancel the On Timer

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1) Checklist :
(1) Is AC voltage between “L1” and “1” of outdoor terminal block is normal?
(Input voltage within ±10% range)
If the Output is not checked, check “L1” and “1” of Indoor Terminal Block.
(2) Are connectors linked correctly to the outdoor PCB?
(CN71, CN76, CN72, CN11)
2) Troubleshooting procedure
1-1 No Power-Initial diagnosis in case of the Outdoor Unit PCB of US12AA(B)MCF
Check AC Output between “L1” and “1” of the outdoor terminal block
Is voltage rating between #1 and #3 (CN72) normal?
Is AC voltage between #1 and #3 (CN11) ( = )AC 17V?
Is DC voltage between “I” and “G” (IC01) normal?
Is DC voltage between “G” and “O” (IC01) ( = ) DC 12V?
Is DC voltage between “G” and “O” (IC02) ( = ) DC 5V?
Is the power supply normal?
Check the other connection parts
Check F701, F702 is open
Replace PCB
TRANS is abnormal.
Replace TRANS
BD71 or D101 is abnormal.
Replace PCB
IC01(KA7812) is abnormal.
Replace PCB
IC02 is abnormal.
Replace PCB
MICOM or LED is abnormal.
:
:
:
YES
YES
YES
YES
YES
YES
NO
NO
NO
NO
NO
NO
Is LED 01 (GRN) on?
AS07AS(6)MA SM_E 1/7/04 6:07 PM Page 15