JVC KS-FX845R Service Manual page 33

• Pin layout
• Pin function
Pin No. Symbol
1 TAB
2 GND
3 FR-
4 STDBY
5 FR+
6 VP1
7 RR-
8 GND
9 RR+
10 RIPPLE
11 RRIN
12 FRIN
13 SGND
4.11 IC-PST600M/G/-W (IC702) : System reset
4.12 LB1641 (IC402) : DC Motor driver
• Pin layout
1 2 3 4
GND OUT1 P1
VZ
Function
Header of IC
Power GND
Outpur(-) for front Rch
Stand by input
Output (+) for front Rch
Power input
Output (-) for rear Rch
Power GND
Output (+) for rear Rch
Ripple filter
Rear Rch input
Front Rch input
Signal GND
Co1
5 6 7 8 9 10
IN2 VCC1 VCC2 P2 OUT2
IN1
Pin No. Symbol
14 FLIN
15 RLIN
16 ONTIME
17 RL+
18 GND
19 RL-
20 VP3
21 FL+
22 MUTE
23 FL-
24 GND
25 NC
OP1
• Truth table
Input Output
IN1 IN2 OUT1
0 0 0
1 0 1
0 1 0
1 1 0
Function
Front Lch input
Rear Lch input
Power on time control
Output (+) for rear Lch
Power GND
Output (-) for rear Lch
Power input
Output (+) for front
Muting control input
Output (-) for front
Power GND
Non connection
1
IN
3
Vout
2
GND
Mode
OUT2
0 Brake
0 CLOCKWISE
1 COUNTER-CLOCKWISE
0 Brake
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