Samsung Electronics
4-5
Troubleshooting
4-2 Measures to be taken when the Protection Circuit operates
4-2-1 SMPS Check Flow-SMPS Protection
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°C.
3. There is no power supply for AMP.
SMPS PCB
Location
Pin No.
Protection
Remark
Open
Short
CON3
+12V (6, 9#)
X
X
D5.6V (1~4#)
X
X
CON2
+PVDD (about +38V)
(1~4#)
X
C630 about
+27.5V
-PVDD (about -38V)
(11~14#)
X
C630 about
-27.5V
+5V (7#)
X
X
-5V (8#)
X
X
<Table 4-1>
Summary of Contents for MAX-G55
Page 24: ...3 12 Samsung Electronics MEMO ...
Page 44: ...5 11 Samsung Electronics MEMO ...
Page 55: ...5 11 Samsung Electronics MEMO ...
Page 57: ...6 2 Samsung Electronics PCB Diagram 6 2 FRONT PCB Top 1 UCW2 USJ1 UCW1 UIC2 ...
Page 59: ...6 4 Samsung Electronics PCB Diagram 6 3 FRONT PCB Bottom FIC1 UIC2 UCW1 USJ1 UCW2 ...
Page 64: ...Samsung Electronics 6 9 PCB Diagram 6 6 SMPS PCB Top CON2 CN1 UB1 CON3 UM1 ...
Page 65: ...6 10 Samsung Electronics PCB Diagram 6 7 SMPS PCB Bottom CON2 CN1 UB1 CON3 UM1 ...
Page 73: ...7 8 Samsung Electronics MEMO ...