JVC VS-DT9R Service Manual

VS-DT9R/VS-DT6R
1-29
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
VREF
MPX
VDDA
VSSA
FLOUT
CIN
TEST
XOUT
XIN
GND
VDDD
MODE
RST
RDDA
RDCL
RDS-ID/READY
O
I
-
-
O
I
I
O
I
-
-
I
I
O
I/O
O
Reference voltage output (Vdda/2)
Base band (multiplex) signal input
Analog system power supply (+5V)
Analog system ground
Subcarrier output (filter output)
Subcarrier input (comparator input)
Test input
Crystal element output (4.332MHz)
Crystal element input (or external reference signal input)
Digital system ground
Digital system power supply (+5V)
Readout mode setting (0:master, 1:slave)
RDS ID and RAM reset (Active high logic)
RDS data output
RDS clock output (master mode)/RDS clock input (slave mode)
RDS ID/ready output (Active low)
Pin No. Symbol I/O Function
1. Terminal layout
3. Pin function
LC72723 (IC3) : RDS decoder
2. Block diagram
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
VREF
MPX
VDDA
VSSA
FLOUT
CIN
TEST
XOUT
RDS-ID/READY
RDCL
RDDA
RST
MODE
VDDD
GND
XIN
VDDA
VSSA
MPX
VREF FLOUT CIN
VDDD
GND
RDDA
RDCL
MODE
RST
RDS-ID/
READY
XOUTXIN
REFERENCE
VOLTAGE
ANTIALIASING
FILTER
57kHz
BPF
(SCF)
V
REF
CLK(4.332MHz)
SMOOTHING
FILTER
PLL
(57kHz)
CLOCK
RECOVERY
(1187.5Hz)
DATA
DECODER
RDS-ID
DETECT
RAM
(128 bits)
TEST
TEST
OSC
NJM4580D-D (IC101) : Dual operational amplifier
1. A OUTPUT
2. A -INPUT
3. A +INPUT
4. V
-
5. B +INPUT
6. B -INPUT
7. B OUTPUT
8. V
+
1. Terminal layout & Block diagram
8 7 6 5
1 2 3 4
B
A
AMP
AGC
Detector
BPF
I/V
conversion
PD
Vcc
Comp
22k
ohm
magnetic shield
VDD
OUT
GND
for
trimming circuit
RPM6938-SV4 (IC801:VS-DT9R,IC802:VS-DT6R,IC812) : Remote control receiver
1. Block diagram

JVC VS-DT9R Specifications

General

Brand	JVC
Model	VS-DT9R
Category	Stereo System
Language	English