15
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 UQ12AA(B)MCF
Check AC Output between “L1” and “1” of the out door 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 “O” and “G” (IC01) normal?
Is DC voltage between “G” and “O” (IC01) ( = ) DC 12V?
Is DC voltage between “O” and “G” (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?
AQ09A5(6)MA SM_E_15777 1/12/04 5:02 PM Page 15
Summary of Contents for UQ09A5(6)MAF
Page 28: ...28 3 Assembly control in Assembly drawing and part s list cont d ΙΛ AQ09A5 6 MAF AQ12AA B MCF ...
Page 30: ...30 4 Assembly control out Assembly drawing and part s list cont d ΙΛ UQ12AA B MCF ...
Page 43: ...43 This document can not be used without Samsung s authorization UQ12AA B MCF 2 Outdoor unit ...
