Circuit Description - Kenwood RXD-V313 Service Manual

1. Microprocessor : (IC601, LC867224A-5H95)
1-1. Pin description
No. Name
1 CE
2 RESET-OUT
3 DI
4 DO
5 CLK
6 DATA-OUT
7 DATA-IN
8 CLK-OUT
9 N/C
10 STB-OUT
11 BUSY-IN
12 RESET
13 POWER-DOWN
14 GND
15 VSS
16 X1
17 X2
18 VDD1
19~24 K1~K6
25 MODE-SW2
26 MODE-SW1
27, 28 GND
29 REMOTE IN
30 VR +
31 VR -
32 PIC-UP
33 PIC-DOWN
34 DISC-COUNT
35 TURNTABLE-SW
36 TRAY-OPEN
37 TRAY-CLOSE
38 TURNTABLE MOTOR +
39 TURNTABLE MOTOR -
40 TRAY MOTOR +
41 TRAY MOTOR -
42 MOTOR SPEED
43 LED HIT MASTER
44 TUNER
45 CD
46 AUX
47 TAPE
48 FLAT
49 ROCK
50 JAZZ
51 POP
52~55 S1-S4
56 VDD2
57 VSS2
58~79 S5~S26
80~82 BIAS3~1

CIRCUIT DESCRIPTION

I/O Description
I LC7218, LC75392 CE out
O Reset out IC03 (LC867240A)
I LC7218, LC75392, LC78211 data out
O Data output to LC7218
I LC 7218, LC75392, LC78211 clock out
O Serial data out to LC867240A
I Serial output of SUBQ 80BIT
O Clock output
O No used
O Strobe out
I Busy input
I Reset signal input
I Power down input
– GND
– Vss
– Xtal 6.0MHz
– Xtal 6.0MHz
– Vdd
I Key input (K1~K4),K5/K6 (No used)
I Model discrimination
I Model discrimination
I GND
I Remote signal input
I VR encoder input A
I VR encoder input B
I Pick-up SW
I Pick-down SW
I Disc counter SW
I Turntable SW
I Tray open SW
I Tray close SW
O Turntable motor (+)
O Turntable motor (-)
O Tray motor control (+)
O Tray motor control (-)
O Motor speed control
O LED control (hit master)
O
O
O
O No used
O
O
O
O
O Segment out (1~4)
– Vdd
– Vss
O Segment out (5~26)
– GND
RXD-V313
Active
H L
O
O
O
O
O
O
O
O
Nor Down
O
O
5