Circuit Description - Kenwood RXD-V323 Service Manual

QQ
3 7 63 1515 0
1. Reception Bands
Band Tuning Range
FM 87.50 ~ 108.00MHz 50kHz
AM 531 ~ 1602kHz
3. Microprocessor : (IC601,LC867248A)
3-1. Pin description
Pin. No. Name
1
2 RESET-OUT
3
4
TE
L 13942296513
5 CLK
6 DATA-OUT
7 DATA-IN
8 CLK-OUT
9
10 STB-OUT
11 BUSY-IN
12 RESET
13 POWER-DOWN
14 GND
15 VSS
16
17
18 VDD1
19~21 K1~K3
22
23
24 EX.BASS
25 DECK-MODE
26 BAND-SW
27 GND
28 SP PR IN
29 REMOTE IN
30 VR+
www
31
32 PIC-UP
33 PIC-DOWN
.
34 DISC-COUNT
35 TURNTABLE SW
36 TRAY-OPEN
37 TRAY-CLOSE

CIRCUIT DESCRIPTION

Step RF
25kHz +10.7MHz
9kHz 9kHz +450kHz
I/O
CE O CE output to LC72131D(TUNER,IC103).
I LC867240A(CD,IC03) reset out.
DO I Data input from LC72131D(TUNER,IC103).
DI O Data output to LC72131D(TUNER,IC03).
O Clock output to LC72131D and M66004SPA(FRONT,IC801).
O Sub CPU(CD PCB,IC03) interface data output.
I Sub CPU(CD PCB,IC03) interface data input.
O Sub CPU(CD PCB,IC03) interface clock output.
N/C - No used.
O Strobe output.
I Busy input.
I Reset signal input.
I Power down input.
- Ground.
- Ground.
X1 - Xtal 6.0MHz .
X2 - Xtal 6.0MHz .
- Power supply(+5.0V).
I Key input(K1~K3).
K4 - Connected to VCC.
L/M I Level meter.
I Extra bass ON/OFF signal input.
I Deck mode switch input.
I Band switch input.
- Ground.
I Speaker protection input.
I Remocon signal input.
I Volume encoder(VR801) input.
VR- I Volume encoder(VR801) input.
x ao I Input port of up switch for pick up.
y
I Input port of down switch for pick up.
i
I Disc counter switch input.
I Turntable switch input.
I Tray open switch input.
I Tray close switch input.
8
2. TUNER preset frequency
M.ch
IF
1 FM
2 FM
3 FM
4 FM
5 FM
6 AM
7 AM
8 AM
9 AM
10 AM
11 FM
12 FM
13 FM
14 FM
15 FM
Description
Q Q
3 6 7 1 3
u163
.
RXD-V323
2 9 9 4 2 8
Frequency M.ch
87.5MHz 16 FM
90.0MHz 17 FM
98.0MHz 18 FM
106.0MHz 19 FM
108.0MHz 20 FM
531kHz 21 FM
603kHz 22 FM
999kHz 23 FM
1404kHz 24 FM
1602kHz 25 FM
87.5MHz 26 FM
87.5MHz 27 FM
87.5MHz 28 FM
87.5MHz 29 FM
87.5MHz 30 FM
1 5 0 5 8 2 9 9 4
m
co
9 9
Frequency
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
87.5MHz
Active
H L
O
2 8 9 9
O
O
On Off
O
5