JVC KD-S687 Service Manual page 17

LA6574H-X (IC561) : Power AMP
1.Pin layout / Block diagram
VCC2 1
V05- 2
V05+ 3
V04+ 4
V04- 5
V03+ 6
V03- 7
FR FR
V02+ 8
V02- 9
V01+ 10
V01- 11
VCC1 12
VIN1 13
VIN1G 14
2.Pin function
PinNo. Symbol
1 VCC2 CH3,4,5 power supply
2 VO5- Loading output (
3 VO5+ Loading output (
4 VO4+ CH4 output terminal (
5 VO4- CH4 output terminal (
6 VO3+ CH3 output terminal (
7 VO3- CH3 output terminal (
8 VO2+ CH2 output terminal (
9 VO2- CH2 output terminal (
10 VO1+ CH1 output terminal (
11 VO1- CH1 output terminal (
12 VCC1 CH1,2 power supply
13 VIN1 CH1 input terminal
14 VIN1G CH1 input terminal (For gain ADJ)
CH5 Thermal Shuydown
POWER
CH5
CH4
CH3
CH2
CH1
CH1.2.3.4
22k
POWER
11k
Function
)
)
)
)
)
)
)
)
)
)
22k 11k
Signal System Power
3.3VREG (External
PNP Tr)
22k
11k
22k
11k
PinNo. Symbol
15 VIN2 CH2 input terminal
16 VIN2G CH2 input terminal (For gain ADJ)
17 VIN3 CH3 input termianl
18 VIN3G CH3 input terminal (For gain ADJ)
19 REG-IN Regulator terminal
20 REG-OUT Regulator terminal
21 VREF-IN Reference voltage input terminal
22 VCC-S Signal system power supply
23 VIN4G CH4 input terminal (For gain ADJ)
24 VIN4 CH4 input terminal
25 VCONT 5CH output voltage setting terminal
26 S-GND GND for signal line
27 FWD 5CH output select terminal
28 REV 5CH output select terminal
28 REV
27 FWD
26 S-GND
25 VCONT
24 VIN4
23 VIN4G
22 VCC-S
FR FR
21 VREF-IN
20 REG-OUT
19 REG-IN
18 VIN3G
17 VIN3
16 VIN2G
15 VIN2
Function
KD-S687
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