Kenwood KRF-V7510D Service Manual page 8

KRF-V7510D/V8010D/VR-208/209
1-2 Pin description
Pin No. Pin Name
1,2 G10,11
3 None
4,5 None
6 AUDIO
7 VOL.ENC.A
8 REMOCON
9 VOL.ENC.B
10,11 None
12-14 KR0-2
15 PROTECT
16 S.DATA
17 S.BUSY
18 E2.DT
19 E2.CLK
20 SEL.ENC.A
21 SEL.ENC.B
22 MULTI.ENC.A
23 MULTI.ENC.B
24 SER.IN
25 AC3.SCK
26 AC3.SI
27 AS3.SO
28 Vdd
29 None
30 SEL.ST2
31 AC3.CS
32 CODEC.CS
33 PLL.DO
34 PLL.ST
35 PLL.SD
36 RCV.CE
37 Avss
38 RESET
39,40 8MHz
41 Vss
42 None
43 TEX
44 Vdd
45 Vfdp
46 SEL.ST1
47 PLL.DT
48 PLL.CK
49 PLL.CE
50 T.TUNE
51 A.MUTE
52 SW.MUTE
53 10dB.ATT
54 VOL.DT
55 VOL.CK
56 VOL.ST
57 VCR.MUTE
58 VCR.A
59 VCR.BB
60 FA.RLY
8
CIRCUIT DESCRIPTION
I/O
O Display grids 10,11
– Ic test mode port.
I No connect
I Audio signal detection port. L=AUDIO.
I Volume encoder A(clockwise) output.
I Remote contol signal input.
I Volume encoder B(counterclockwise) output.
O Ic test mode port.
I Key return 0-2.
I Protection signal detection port. H=PROTECT.
I/O Serial DATA signal.
I/O Serial BUSY signal.
I/O E2 PROM data.
I/O E2 PROM clock.
I Selector encoder A(clockwise) input.
I Selector encoder B(counterclockwise) input.
I Multi encoder A(clockwise) input.
I Multi encoder B(counterclockwise) input.
I SL16/XS8 selector. H=16bit.
O YSS248 clock output.
I YSS248 data input.
O YSS248 data output.
– Analog power supply(+5V)
I No connect
O TC9162AF/63AF/64AF st2 output. H=latch.
O YSS248 CS output.
O CS4226 CS output.
I Pll ic do signal input port.
I Tuner stereo signal detection port. L=STEREO.
I Tuner sd signal detection port. L=TUNED.
I Receiver chip enable signal port. L=ENABLE.
– Analog GND.
I Microproessor reset signal.
I Main clock generation(8MHz).
– Microprocessor GND.
I No connect
– GND.
– Power supply(+5V).
– Power supply(-33V).
O TC9162AF/63AF/64AF st1 output. H=latch.
O Pll ic data signal output port.
O Pll ic clock signal output port.
O Pll ic ce signal output port.
O Tuner mute control. L=mute on.
O Output mute control. L=mute on.
O Sub woofer mute control. L=mute on.
O Volume 10dB attenuation control. H=att. on.
O Volume ic (M62446SP) data control.
O Volume ic (M62447SP) clock control. H=active.
O Volume ic (M62448SP) st control. H=active.
O Video ic (NJU2279D) cont2/4 mute control. L=mute on.
O Video ic (NJU2279D) cont1 mute control. H/L=static.
O Video ic (NJU2279D) cont3 mute control. H/L=static.
O Front A speaker relay control. H=relay on.
Description