VSX-816-K
127
5
6
7
8
5
6
7
8
C
D
F
A
B
E
7.3 EXPLANATION
7.3.1 DETECTION CIRCUIT
MAIN ASSY
IC9001
(U-P)
Pin72
DC PROT
Normal : +5 V
DC Detect : 0 V
FL
POWER AMP
POWER AMP
DC DET
(refer 1)
1. DC Derection Circuit Diagram : Example of VSX-816/KUXJ/CA
2. Overload Detection Circuit Diagram: Example of VSX-816/KUXJ/CA FRONT Channel
3. Fan Stop Prottection Circuit Diagram
POWER PACK ASSY
POWER PACK ASSY
MAIN ASSY
IC602(1/2)
R673
R696
C696
C697
R726
D+5V
IC9001
(U-P)
Pin72
DC PROT
DC DT
OL DT
Q696
Q697
IC601(1/2)
R626
IC602(2/2)
R642
IC601(2/2)
R674
IC603(1/3)
R623
IC603(2/3)
R694
IC603(2/3)
IC802(1/2)
8pin
R788
FR
SL
SR
C
SBL
SBR
R667
R669
D651
R665
R445
Fan Stop DET.
D+5V
+12V
-12V
R726
R446
FL
Q665
MAIN ASSY
IC9001
(U-P)
Pin73
OL DET
Normal : +5 V
OVER LOAD
Detect : 0 V
POWER PACK ASSY
OL DT
MAIN ASSY
IC9001
(U-P)
Pin72
DC PROT
Normal : +5 V
FAN abnormal
STOP : 0 V
SPEAKER Impedance
Fan Stop
Fan
Fan -
Fan +
C255
Q253