JVC KD-SX8250 Service Manual page 33

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3 7 63 1515 0
LC75412W(IC301):E.VOLUME
1.Terminal layout & block daiagram
49
50
51
52
53
54
55
56
57
58
59
60
61
TE
L 13942296513
62
63
64
2.Function
Symbol
Pin No.
54 L1 Single end input terminal
53 L2
52 L3
51 L4
55 L6
59 R1
60 R2
61 R3
62 R4
58 R6
50 L5M Differential motion input terminal
49 L5P
63 R5M
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64 R5P
48 LSELO Input selector output terminal
1 RSELO
46 LCT Then terminal for roudness.CR for a high region amends is connected for LCT(RCT) and
.
3 RCT LVRIN(RVRIN),and CR for a low region amends is connected between LCT(RCT) and GND.
47 LVRIN Volume + equalizer input terminal.
2 RVRIN
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48 47 46 45 44 43
LVref
Multiplexer
LVref
RVref
Multiplexer
RVref
1 2 3 4 5 6
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y
i
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8
42 41 40 39 38 37
ZERO CROSSDET
CONTROL
LOGIC CIRCUITVA
CIRCUIT
ZERO CROSSDET
Q Q
3 6 7 1 3
7 8 9 10 11 12
Function
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.
KD-SX8250/KD-SX780
2 9 9 4 2 8
36 35 34 33
CCB
INTERFACE
NO SIGNAL
TIMMER
1 5 0 5 8 2 9 9 4
13 14 15 16
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co
9 9
32
31
30
29
28
27
26
25
24
23
22
21
20
2 8 9 9
19
18
17
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