JVC KT-DB1000 Schematics
KT-DB1000
SCHEMATIC DIAGRAMS
DAB Tuner Unit
KT-DB1000
CD-ROM No.SML200209
Contents
Block diagrams
Standard schematic diagrams
Printed circuit boards
2-1
2-2
2-4
COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD.
Area Suffix
E Continental Europe
No.49758SCH
Sep. 2002
Safety precaution
!
Burrs formed during molding may be left over on some parts of the chassis. Therefore,
pay attention to such burrs in the case of preforming repair of this system.
Block diagram
KT-DB1000
ANTENNA
DAB TUNERDAB TUNER
5
QAU0284-001QAU0284-001
B3
L
TU1TU1
(A5V/A3.3V)(A5V/A3.3V)
SAW
36.864MHz
PLLPLL
IF
2.048MHz
ADCADC
4
TH1TH1
PTCPTC
NAD0031-001NAD0031-001
X1X1
24.576MHz
DAB BASEBANDDAB BASEBAND
MN66720UCMN66720UC
AFCAFC
FIRFIR
AGCAGC
VITERBIVITERBI
MPU IFMPU IF
IC1IC1
(D3.3V/A3.3V)(D3.3V/A3.3V)
3M DRAM3M DRAM
FFTFFT
DECODERDECODER
DEINTE-DEINTE-
RLEAVERRLEAVER
MP2MP2
MCK
BCK
LRCK
DA
2
S)
(I
IC501IC501 IC901IC901
DACDAC
AK4382AK4382
(A5V)(A5V)
L-CH
R-CH
BUFFER AMPBUFFER AMP
NJM4580NJM4580
(9V)(9V)
Q121Q121
Q221Q221
MUTEMUTE
CD CHANGER
L-CH
R-CH
IC911IC911
AudioAudio
SwitchSwitch
NJM2750NJM2750
(9V)(9V)
JBUS AUDIO OUT
MPUTX
MPURX
MPUCK
MPUEN
MPUMOD
DDOWFIC
3
2
BATT
IC802IC802 IC803IC803 IC804IC804
Q891Q891
TR.SWTR.SW
SW.REGSW.REG
SI8050SI8050
SER.REGSER.REG
NJM2370NJM2370
SER.REGSER.REG
TA48033TA48033
SER.REGSER.REG
7805A7805A
IC801IC801
IC806IC806
PLL SCL
PLL SDA
2
C)
(I
SER.REGSER.REG
BA033BA033
POWER OUT
A3.3V
D3.3V
A5V
D5V
9V
P3.3V
RESETRESET
PST9121PST9121
(P3.3V)(P3.3V)
IC851IC851
DAB RESET
RESET
DIDOCK
EEPROMEEPROM
BR93LC66FBR93LC66F
(P3.3V)(P3.3V)
IC702IC702
UCOM.UCOM.
MN102H60KCBMN102H60KCB
(P3.3V)(P3.3V)
CS
19.6608MHz
IC701IC701
X701X701
DACCSN
DACCDTO
DACRESET
DACCCCLK
MUTE
JBUSINT
JBUSI/O
JBUSDAO
JBUSDAI
JBUSCK
DZFL
DZFR
IC771/IC772IC771/IC772
3.3V/5V IF3.3V/5V IF
TC7WT241x2TC7WT241x2
(P5V)(P5V)
AUDIOSEL
JBUSCK
JBUSDA
Serial Communication Signal
Analog Signal
Other Control Signal
1
CMOS REGCMOS REG
S-81250S-81250
AB CD E F G
IC805IC805
P5V
2-1
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