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Kenwood KTC-SR901 - Digital Satellite Tuner, Service Manual

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Kenwood KTC-SR901 - Digital Satellite Tuner Service Manual Download Page 2

KTC-SR901

2

BLOCK DIAGRAM

60MHz

8.192MHz

DATA

AUDIO

ANTENNA DETECT

POWER SUPPLY BLOCK

F/E

A1

A/D

IC2

DD

IC3

(OPTION)

ANTENNA

COFDM

IC4

TDMRC

IC6

CDC

IC7

SDRAM

IC5

SRAM

IC8

IC9

DAP

SRAM

IC11

FLASH

IC10

ROM

A2

D/A

IC23

BUFFER

IC30

IC1

u-COM

SW.

IC24

IC25

ISO-

IC34

AMP

AMP

J2

J3

to H/U

to CD-CH

J1

Q2

Q10

IC15

IC12

IC16

Q3,IC13

Q12,IC17

Q13,IC18

IC22

IC35

IC19

IC14

AUDIO 8V
BIAS
DAC 5V

ADC 5V

ANTENNA 8V

DIG 3.3V

DIG 5V
F/E 3.3V

DIG 2.5V

B.U. 5V

DIG GND

ADC GND

DAC GND

AUDIO GND

RECEIVE SIGNAL
CLOCK
CONTROL

COMPONENTS DESCRIPTION

● 

electric unit  (X14-6900-10)

Ref.No.

Element/Function

Operation/Condition

IC1

µ-com

IC2

AD converter

Analog to digital converter from A1 (tuner module)

IC3

Digital downconverter

Downconvert to baseband, de-mapping, timing correction

IC4

FFT, De-modulator

FFT, de-modulate, frequency correction for COFDM signal

IC5

128M SDRAM

For 4 seconds-delay

IC6

De-modulator, Combiner

De-modulate, correction for TDM signals, and combining of three signals

IC7

De-interleaver, Decoder

De-interleaver, viterbi/reed-solomon decode and channel selection

IC8

4M SRAM

For de-interleaver

IC9

Audio-decoder, 

Audio decode, data decode and other agere's ic's system control, 

System controller

and has a ESN code

IC10

16M Flash memory

Boot ROM for IC9 and has a ESN code

www. xiaoyu163. com

QQ 376315150

9

9

2

8

9

4

2

9

8

TEL 13942296513

9

9

2

8

9

4

2

9

8

0

5

1

5

1

3

6

7

3

Q

Q

TEL  13942296513  QQ  376315150  892498299 

TEL  13942296513  QQ  376315150  892498299 

Summary of Contents for KTC-SR901 - Digital Satellite Tuner

Page 1: ...0 4138 05 Metallic cabinet A01 2786 02 Screw set N99 1623 05 Accessory W01 0744 05 Magic tape H30 0051 05 Mounting hardware J21 3801 04 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 ...

Page 2: ...rter Analog to digital converter from A1 tuner module IC3 Digital downconverter Downconvert to baseband de mapping timing correction IC4 FFT De modulator FFT de modulate frequency correction for COFDM signal IC5 128M SDRAM For 4 seconds delay IC6 De modulator Combiner De modulate correction for TDM signals and combining of three signals IC7 De interleaver Decoder De interleaver viterbi reed solomo...

Page 3: ... Converter For digital 3 3V power supply Q13 DC DC Converter For digital 5V power supply Q14 SW For audio out source select On CD CH Off Sirius Q15 SW For mute On Mute Q17 Mute For left mute Q18 Mute Forright mute Q19 Inverter For reset Q21 Inverter For 5L ch con signal Q50 SW For B U detect On Detect Q51 SW For B U detect mute On Mute D1 5 Diode Protect for wrong connection D10 11 Schottky barrie...

Page 4: ... O NC Not connect 31 I RESET H Normal off L Reset 32 I NC Not connect 33 34 NC Not connect 35 X2 Crystal for main clock 36 I X1 Crystal for main clock 37 VSS Ground 38 VDD Power supply 39 54 O NC Not connect 55 BVDD Power supply for BUS interface 56 BVSS Ground for BUS interface 57 70 O NC Not connect 71 AVDD Analog power supply 72 AVSS Analog ground 73 I AVREF Analog reference voltage 74 I ANTENN...

Page 5: ...R55 C145 C227 R160 R49 R187 R57 R58 C5 C228 R50 R51 R61 R52 R53 R5 R4 R2 R3 R17 R11 R1 R25 R21 C75 C95 C42 C43 C41 C32 C33 C31 C44 C45 C46 C11 C14 C16 C15 C13 C17 C20 C160 C157 C163 C166 C19 C18 C141 C130 C133 C182 C137 C136 C134 C135 C252 C251 C254 C257 C255 C250 C178 C288 C204 C205 L48 L46 L47 R129 R119 R122 L21 R124 L42 R120 L41 R177 R176 R179 R178 R175 R173 R172 R174 W5 R181 R180 R183 R182 R17...

Page 6: ...2 T2TIM1 T2SAP10 OSAP10 VSS CKN CKP RESETN OISAN OSAWRN OSAP11 31 TA2DP5 TA2DN4 TA2DN5 TA2DP4 24 23 26 25 VSS VDD TA2DP6 TA2DN6 27 29 28 30 35 TA2DP8 TA2DN8 TA2DP7 TA2DN7 33 32 34 TA2DP9 TA2DN9 36 40 41 42 43 39 37 38 OTIM4 OTIM3 OTIM2 OTIM1 OTIM0 T2ISAN T2SAWRN VDD VSS T2SAP11 OSAP5 OSAP6 VDD VSS OSAP4 OSAP3 OSAP2 OSAP1 OSAP0 OTIMWRN OTIM7 OTIM6 OTIM5 OSAP9 OSAP8 OSAP7 57 50 47 48 49 44 45 46 54 ...

Page 7: ...116 0 1 C119 0 1 A11 DQ7 DQ15 VSS BYTE 2 A15 1 A12 A13 A14 5 4 3 47 A16 48 44 45 46 DQ9 DQ2 DQ10 DQ3 D Q11 VCC DQ4 DQ12 DQ5 DQ13 DQ6 DQ14 12 9 A8 A9 A10 8 7 6 WE N C A19 11 10 RB N C N C RST 15 14 13 A7 A17 A18 18 17 16 C114 37 40 41 42 43 38 39 34 35 36 DQ1 31 32 33 C138 0 1 10u10 C129 10u10 C122 0 22 25 29 30 31 26 27 28 23 24 C123 0 1 R45 270 C126 0 1 C125 0 1 C128 0 1 C127 0 1 C124 0 1 VSS DQ0...

Page 8: ...90 W3 1 2 3 IN GND OUT 6 A GND 4 5 CH MUTE CH CON DATA C 10 2 3 BU 14V GND 1 REQ H Rch REQ C 8 9 CH RST 7 11 13 10 9 6 12 3 7 5 2 4 1 8 6 2K R92 5 1K R97 0V 1 2 3 OUT 3 1 2 1 3 2 3 1 2 1 3 2 N C N C N C N C N C N C N C N C N C N C N C N C VDD VSS X1 X2 REGC XT2 XT1 RESET CS SK DO DI SSN 38 29 28 27 26 33 32 31 30 37 36 35 34 46 42 41 40 39 45 44 43 50 49 48 47 89 6 17 PON A DAP RST N C N C 25 24 2...

Page 9: ...6 φ3x8 φ2 6x6 φ3x6 M3x8 φ2 6x5 1 715 716 3 705 702 4 717 711 J2 J3 J1 CN4 F1 A 1 8x2 7 9 10 2 Parts with the exploded numbers larger than 700 are not supplied 13 www xiaoyu163 com QQ376315150 9 9 2 8 9 4 2 9 8 TEL 13942296513 9 9 2 8 9 4 2 9 8 0 5 1 5 1 3 6 7 3 Q Q TEL 13942296513 QQ 376315150 892498299 TEL 13942296513 QQ 376315150 892498299 ...

Page 10: ...25WV C156 C92 1738 05 ELECTRO 150UF 25WV C157 CK73EB1E105K CHIP C 1 0UF K C158 C92 0036 05 CHIP ELE 4 7UF 16WV C159 C92 0675 05 ELECTRO 4 7UF 25WV C160 CK73GB1C104K CHIP C 0 10UF K C161 C92 1737 05 ELECTRO 470UF 6 3WV C162 C92 1738 05 ELECTRO 150UF 25WV C163 CK73EB1E105K CHIP C 1 0UF K C164 C92 0036 05 CHIP ELE 4 7UF 16WV indicates safety critical components KTC SR901 1 1B A01 2786 02 METALLIC CAB...

Page 11: ...PF J C294 CC73GCH1H100D CHIP C 10PF D C295 CC73GCH1H220J CHIP C 22PF J C296 CK73GB1H103K CHIP C 0 010UF K Ref No A d d N e w Parts No Description Dest inati on C297 298 CK73FB1H104K CHIP C 0 10UF K C300 CK73FB1H104K CHIP C 0 10UF K C301 CK73GB1C104K CHIP C 0 10UF K CN2 E40 3252 05 PIN ASSY 8P CN5 E40 3246 05 PIN ASSY 2P J1 2A E20 0239 05 SCREW TERMINAL BOARD 2P J2 2B E56 0820 05 CYLINDRICAL RECEPT...

Page 12: ... 1 10W R181 185 RK73GB2A104J CHIP R 100K J 1 10W R188 RK73GB2A473J CHIP R 47K J 1 10W R189 190 RK73GB2A512J CHIP R 5 1K J 1 10W R191 RK73GB2A473J CHIP R 47K J 1 10W R200 RK73GB2A183J CHIP R 18K J 1 10W R201 RK73GB2A104J CHIP R 100K J 1 10W R202 RK73GB2A681J CHIP R 680 J 1 10W R203 218 RK73EB2E101J CHIP R 100 J 1 4W W1 R92 2052 05 CHIP R 0 OHM J 1 10W W2 3 R92 1252 05 CHIP R 0 OHM J 1 16W D1 1SS294...

Page 13: ... TRANSISTOR Q17 18 DTC114TUA DIGITAL TRANSISTOR Q17 18 UN5215 TRANSISTOR Q19 DTC124EUA DIGITAL TRANSISTOR Q19 UN5212 TRANSISTOR Q21 DTC144EUA DIGITAL TRANSISTOR Q21 UN5213 TRANSISTOR Q50 DTC124EUA DIGITAL TRANSISTOR Q50 UN5212 TRANSISTOR Q51 2SK3018 FET A1 W02 3301 05 TUNER ASSY A2 W02 3304 05 OSCILLATING MODULE 16 384MHZ Ref No A d d N e w Parts No Description indicates safety critical components...

Page 14: ...0 001 São Paulo SP Brasil KENWOOD ELECTRONICS UK LIMITED Kenwood House Dwight Road Watford Herts WD1 8EB United Kingdom KENWOOD ELECTRONICS DEUTSCHLAND GMBH Rembrücker Str 15 63150 Heusenstamm Germany KENWOOD ELECTRONICS FRANCE S A 13 Boulevard Ney 75018 Paris France KENWOOD ELECTRONICS BELGIUM N V Leuvensesteenweg 248 J 1800 Vilvoorde Belgium KENWOOD ELECTRONICS ITALIA S p A Via G Sirtori 7 9 201...

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