Vcc; Out; Circuit; Q Q - JVC KW-XC777 Service Manual

QQ
3 7 63 1515 0
HD74HC126FP-X (IC461,IC761) : Buffer
1.Pin layout
1C
1A
1Y
2C
2A
2Y
GND
3.Block diagram
TE
L 13942296513
RPM6938-SV4 (IC502) : Remote sensor
1.Block diagram
I/V
conversion
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1 14
VU
2 13 4C
3 12 4A
4 11
4Y
5 10
3C
6 9 3A
7 8
3Y

Vcc

Vcc
1A
2A
3A
Input
4A
1C
2C
3C
4C
Note) CL includes probe and jig capacitance
AMP
BPF
PD
fo
trimming

circuit

x ao
y
magnetic shield
i
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8
2.Pin function
Input Output
C A
L X
H L
H H
Note) H:High level
L:Low level
X:Irrelevant
Z:Off(High-impedance)
State a 3-state input
1k
Output
1Y
2Y
CL

Q Q

Output
3 6 7 1 3
2Y
Sample as Load Circuit 1
Output
3Y
Sample as Load Circuit 1
Output
4Y Sample as Load Circuit 1
Vcc
AGC
Comp
Detector
u163
.
2 9 9 4 2 8
Y
Z
H
L
S1
1k
1 5 0 5 8 2 9 9 4
Vcc
22k
Rout
m
co
GND
KW-XC777
9 9
2 8 9 9
1-43