VSX-D912-S
86
1
2
3
4
1
2
3
4
C
D
F
A
B
E
7.3.3 DETECTION CIRCUIT
1.DC Detection Circuit Diagram:
2. Overload Detection Circuit Diagram:
3. Fan Stop Prottection Circuit Diagram:
4. PCB Board Protection Circuit Diagram
+5V
O.L. DET
AMP
+5V
OL DET
u-con
IC9001
Pin 73
+5V
DC PROT
u-con
IC9001
L : ON
H : OFF
L : ON
H : OFF
L : ON
H : OFF
Pin 23
DC DET.
AMP
+12V
-12V
Fan Stop
Fan -
Fan +
Fan
DC DET.
DC PROT
u-con
IC9001
Pin 23
Fan Stop DET.
Q253
R265
Amp Input Assy
Main Assy
Amp &
Primary
Assy
Amp
Speaker
A
G
C
IC601, IC602
IC601, IC602
Q696
Q697
Q605, Q606,
Q633, Q683
Q655, Q656
+5V
u-con
IC9001
Pin 24
R9035