Detection Circuit - Pioneer VSX-D814-K Service Manual

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7.3.3 DETECTION CIRCUIT

1.DC Detection Circuit Diagram:
IC601, IC602
2. Overload Detection Circuit Diagram:
IC601, IC602
3. Fan Stop Prottection Circuit Diagram:
4. PCB Board Protection Circuit Diagram
A
Main Assy
u-con
IC9001
Pin 24
5
6
AMP
DC DET.
+5V
Q605, Q606,
Q633, Q683
Q655, Q656
O.L. DET
AMP
+5V
DC PROT
DC DET.
L : ON
H : OFF
Fan Stop DET.
Fan Stop Q253
R265
Fan -
Fan
Fan +
-12V +12V
+5V
G
Amp Input Assy
R
6
7
+5V
u-con
IC9001
DC PROT
Pin 23
L : ON
Q696
H : OFF
Q697
u-con
IC9001
OL DET
Pin 73
L : ON
H : OFF
u-con
IC9001
Pin 23
Amp &
C
Primary
Assy
Speaker
Amp
VSX-D814-K
7
8
A
B
C
D
E
F
73
8