Block Diagram; Power Supply Block; Components Description - Kenwood KTC-SR901 Service Manual

KTC-SR901
QQ
3 7 63 1515 0
ANTENNA
(OPTION)
A1 IC2
F/E
J1 Q2
Q10
AUDIO GND
ADC GND
TE
L 13942296513
DAC GND
DIG GND
electric unit (X14-6900-10)
Ref.No. Element/Function
IC1 µ-com
IC2 AD converter
IC3 Digital downconverter
IC4 FFT, De-modulator
IC5 128M SDRAM
IC6 De-modulator, Combiner
IC7 De-interleaver, Decoder
www
IC8 4M SRAM
Audio-decoder,
IC9
System controller
.
IC10 16M Flash memory
2

BLOCK DIAGRAM

60MHz
IC5
IC3
A/D DD
IC4
COFDM
ANTENNA DETECT
IC12
IC22
IC15
IC16
Q3,IC13
Q12,IC17
Q13,IC18
IC14
IC19
IC35

POWER SUPPLY BLOCK

COMPONENTS DESCRIPTION

Analog to digital converter from A1 (tuner module)
Downconvert to baseband, de-mapping, timing correction
FFT, de-modulate, frequency correction for COFDM signal
For 4 seconds-delay
De-modulate, correction for TDM signals, and combining of three signals
De-interleaver, viterbi/reed-solomon decode and channel selection
For de-interleaver
x ao
Audio decode, data decode and other agere's ic's system control,
y
and has a ESN code
i
Boot ROM for IC9 and has a ESN code
8
IC8 IC11
SDRAM SRAM SRAM
IC6 IC7
TDMRC CDC
IC34
AUDIO 8V
BIAS
DAC 5V
ADC 5V
ANTENNA 8V
DIG 3.3V
DIG 5V
F/E 3.3V
DIG 2.5V Q Q
3 6 7 1 3
B.U. 5V
Operation/Condition
u163
.
2 9 9 4 2 8
IC10
FLASH
ROM 8.192MHz
IC9 IC23
DAP D/A
DATA AUDIO
A2
IC30
BUFFER
IC24
IC1
SW.
u-COM
AMP
J2
to H/U
RECEIVE SIGNAL
1 5 0 5 8 2 9 9 4
CLOCK
CONTROL
m
co
9 9
IC25
ISO-
AMP
J3
to CD-CH
2 8 9 9