Measures To Be Taken When The Protection Circuit Operates; Operation Of Power Block Protection Circuit - Samsung MX-FS8000 Service Manual

4.2. Measures to be taken when the Protection Circuit operates

4.2.1. Operation of Power Block Protection Circuit

■ Cases of the SMPS Protection.
1) If there is over current at the AMP IC. (Speaker Wire Short)
2) If temperature of the AMP IC is over 150 ℃.
3) There is no power supply for amp.
■ Protection Circuit operates when power problem occurs in the SMPS.
Location
SMPS PCB
PCN1
Copyright© 1995-2013 SAMSUNG. All rights reserved.
Pin No.
+ST5.3V (2,3#)
-5V (11#)
12V (6#)
-PVDD (about -63V)
(13~16#)
+PVDD (about+63V)
(21~24#)
Protection
Open Short
X O
X X
X X
X O
X O
4. Troubleshooting
Remark
X : No Concern
O : Concern
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