Block Diagram - JVC KT-DB1000 Service Manual

Q Q
3 7 6 3 1 5 1 5 0

Block diagram

ANTENNA
TU1 TU1
DAB TUNER DAB TUNER
(A5V/A3.3V) (A5V/A3.3V)
5
QAU0284-001 QAU0284-001
B3
SAW
36.864MHz
L
PLL PLL
4
TH1 TH1
PTC PTC
NAD0031-001 NAD0031-001
T E
L 1 3 9 4 2 2 9 6 5 1 3
3 Q891 Q891
BATT
TR.SW TR.SW
2 IC802 IC802 IC803 IC803
SW.REG SW.REG SER.REG SER.REG
SI8050 SI8050 7805A 7805A
SER.REG SER.REG
IC801 IC801
NJM2370 NJM2370
IC806 IC806
SER.REG SER.REG
w w w
TA48033 TA48033
1
.
IC805 IC805
CMOS REG CMOS REG
S-81250 S-81250
A
IF
2.048MHz
PLL SCL
PLL SDA
(I 2 C)
DAB RESET
POWER OUT
IC804 IC804
RESET
RESET RESET
A3.3V
SER.REG SER.REG
PST9121 PST9121
BA033 BA033 D3.3V
(P3.3V) (P3.3V)
A5V
IC851 IC851
D5V
BR93LC66F BR93LC66F
9V
(P3.3V) (P3.3V)
P3.3V
x a o
y
i
P5V
B C
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8
X1 X1
24.576MHz
IC1 IC1
DAB BASEBAND DAB BASEBAND
(D3.3V/A3.3V) (D3.3V/A3.3V)
MN66720UC MN66720UC
AFC AFC 3M DRAM 3M DRAM
ADC ADC
FIR FIR
DEINTE- DEINTE-
FFT FFT
RLEAVER RLEAVER
AGC AGC
MCK
MP2 MP2
VITERBI VITERBI
DECODER DECODER
MPU IF MPU IF
BCK
LRCK
DA
(I 2 S)
Q Q
3 7 6 3
IC701 IC701
DZFL
DZFR
MUTE
UCOM. UCOM.
JBUSINT
MN102H60KCB MN102H60KCB
JBUSI/O IC771/IC772 IC771/IC772
JBUSDAO
(P3.3V) (P3.3V)
JBUSDAI
3.3V/5V IF 3.3V/5V IF
JBUSCK
TC7WT241x2 TC7WT241x2
X701 X701
19.6608MHz
EEPROM EEPROM
IC702 IC702
u 1 6 3
.
D E
2 4
9 9 8
Q121 Q121
IC501 IC501 IC901 IC901
Q221 Q221
L-CH
DAC DAC BUFFER AMP BUFFER AMP
R-CH
AK4382 AK4382 NJM4580 NJM4580 MUTE MUTE
(A5V) (A5V) (9V) (9V)
1 5 1 5 0 8 9 2 4
AUDIOSEL
JBUSCK
JBUSDA
(P5V) (P5V)
Serial Communication Signal
Analog Signal
Other Control Signal
m
c o
F
KT-DB1000
2
9 9
CD CHANGER
L-CH
R-CH
IC911 IC911
Audio Audio
Switch Switch
NJM2750 NJM2750
JBUS AUDIO OUT
(9V) (9V)
9 8 2 9 9
G
2-1