Samsung MX-F870 - Measures to be Taken When the Protection Circuit Operates; Operation of Power Block Protection Circuit

4.Troubleshooting
4.2.MeasurestobetakenwhentheProtectionCircuitoperates
4.2.1.OperationofPowerBlockProtectionCircuit
■CasesoftheSMPSProtection.
1)IfthereisovercurrentattheAMPIC.(SpeakerWireShort)
2)IftemperatureoftheAMPICisover150℃.
3)Thereisnopowersupplyforamp.
■ProtectionCircuitoperateswhenpowerproblemoccursintheSMPS.
Protection
LocationPinNo.
OpenShort
Remark
+A5.3V(10/11#)XO
CNM852
-A5V(5#)XX
-PVDD(about-63V)
(1~5#)
XO
SMPSPCB
CNM851
+PVDD(about+63V)
(11~15#)
XO
X:NoConcern
O:Concern
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