JVC KT-DB1000 Service Manual
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JVC KT-DB1000 Service Manual

Dab tuner unit
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3 7 63 1515 0
SERVICE MANUAL
09
2002
49758
TE
L 13942296513
Safety precaution . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Description of major ICs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
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http://www.xiaoyu163.com
DAB Tuner Unit
KT-DB1000
TABLE OF CONTENTS
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COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
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KT-DB1000
9 9
9 9
No.49758
2002/09

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Summary of Contents for JVC KT-DB1000

  • Page 1 KT-DB1000 3 7 63 1515 0 SERVICE MANUAL DAB Tuner Unit 49758 2002 KT-DB1000 L 13942296513 TABLE OF CONTENTS Safety precaution ............... 2 Disassembly method .
  • Page 2 KT-DB1000 http://www.xiaoyu163.com SECTION 1 Safety precaution 3 7 63 1515 0 CAUTION 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.
  • Page 3 KT-DB1000 SECTION 2 Disassembly method 3 7 63 1515 0 2.1 Main body 2.1.1 How to remove a top cover (See Figure 1 and 2.) (1) Screw A attaches a top cover to the main body. Remove the two screws A from the both sides of the main body.
  • Page 4 KT-DB1000 http://www.xiaoyu163.com SECTION 3 Description of major ICs 3 7 63 1515 0 3.1 MN102H60KCB (IC701) : Controller • Pin layout • Pin functions Symbol Function Not use LCDRS Resistor select output terminal for LCD module LCDR/W Read/Write select output terminal for LCD module...
  • Page 5 KT-DB1000 Symbol Function DABDATX FIC packet data stream outout data output terminal 3 7 63 1515 0 MPUEN DAB MPU interface chip enable output terminal MPUMOD DAB MPU interface mode signal outpout terminal DZFINL DZFL input terminal from DAC, "H" outout AMUTEL DZFINR DZFL input terminal from DAC, "H"...
  • Page 6 KT-DB1000 http://www.xiaoyu163.com 3.2 AK4382AVT-X (IC501) : D/A converter • Pin layout 3 7 63 1515 0 • Block diagram • Pin function L 13942296513 Pin No. Symbol Function MCLK Master Clock Input Pin BICK Audio Serial Data Clock Pin SDTI...
  • Page 7 KT-DB1000 3.3 MN66720UC (IC1) : DAB baseband signal processer • Pin layout 3 7 63 1515 0 • Block diagram L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 8 KT-DB1000 http://www.xiaoyu163.com • Pin functions Pin No. Symbol Function 3 7 63 1515 0 TESTIN0,TESTIN1 Input terminal for test. AVDD Analogue VDD terminal. Reference voltage terminal for AD concerter top side. ADVRT ADIN Analogue IF signal input terminal. ADVRB Reference voltage terminal for AD converter bottom side.
  • Page 9 KT-DB1000 Pin No. Symbol Function DDOWMSC Direct data output MSC window output terminal. 3 7 63 1515 0 LVDD1 Internal digital VDD terminal. VSS3 Digital VSS terminal. 55~60 DDOMNO0~DDOMNO5 DIrect data output MSC sub channel ID output terminal. DDOWFIC Direct data output FIC window output terminal.
  • Page 10 KT-DB1000 http://www.xiaoyu163.com 3.4 BR93LC66F-X (IC702) : EEPROM • Terminal layout • Pin Functions 3 7 63 1515 0 Symbol Function Power supply Connect to GND Chip select input Serial clock input Start bit, OP-code,address, serial data input Serial data output Internal state display output of READY/BUSY 3.5 S-81250SGUP-X (IC805) : Regulator...
  • Page 11 KT-DB1000 3.8 UPC7805AHF (IC803) : Regulator • Pin layout 3 7 63 1515 0 • Block diaglam 3.9 NJM2370U09-X (IC801) : Regulator L 13942296513 • Pinlayout • Block diagram • Pin function Pin No Function u163 Control Noise bypass Vout http://www.xiaoyu163.com...
  • Page 12 KT-DB1000 http://www.xiaoyu163.com 3.10 BA033FP-X (IC804) : Regilator • Pin layput 3 7 63 1515 0 • Block Diagram 3.11 TC7WT241FU-X (IC771,IC772) : Buffer • Pin layotu & Blocl diagram 3.12 NJM2750M-X (IC911) : Audio selector L 13942296513 • Pin layout & Block diagram •...
  • Page 13 KT-DB1000 3.13 PST9121N-X (IC851) : System reset • Pin layout 3 7 63 1515 0 • Block diagram 3.14 SI-8050JF-F1 (IC802) : Regulator • Pin layout • Pin function Pin No. Pin function SW out L 13942296513 ON/OFF • Block diagram u163 http://www.xiaoyu163.com...
  • Page 14 KT-DB1000 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS BUSINESS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49758) Printed in Japan 2002/09 http://www.xiaoyu163.com...

  • Page 15: Table Of Contents

    3 7 63 1515 0 SERVICE MANUAL DAB TUNER UNIT 49758B 2005 KT-DB1000 Area suffix E ------------- Southern Europe L 13942296513 Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) TABLE OF CONTENTS PRECAUTION.
  • Page 16 http://www.xiaoyu163.com 3 7 63 1515 0 SPECIFICATION Receivable frequencies Band lll 174.928 MHz to 239.200 MHz L-Band 1452.960 MHz to 1490.624 MHz Power Requirement Operating Voltage DC 14.4 V (11 V to 16 V allowance) Ground System Negative ground Allowable Operating Temperature -10°C to +50°C Dimensions (W ×...

  • Page 17: Precaution

    http://www.xiaoyu163.com SECTION 1 3 7 63 1515 0 PRECAUTION Safety Precautions (1) This design of this product contains special hardware and voltmeter. many circuits and components specially for safety purpos- Move the resistor connection to each exposed metal es. For continued protection, no changes should be made part, particularly any exposed metal part having a return to the original design unless authorized in writing by the path to the chassis, and measure the AC voltage across...

  • Page 18: Specific Service Instructions

    http://www.xiaoyu163.com SECTION 2 3 7 63 1515 0 SPECIFIC SERVICE INSTRUCTIONS HOW TO IDENTIFY MODELS 2.1.1 NAME PLATE Discernment sign L 13942296513 u163 1-4 (No.49758B) http://www.xiaoyu163.com...

  • Page 19: Disassembly

    http://www.xiaoyu163.com SECTION 3 3 7 63 1515 0 DISASSEMBLY Main body 3.1.1 How to remove a top cover (See Figure 1 and 2.) (1) Screw A attaches a top cover to the main body. Remove the two screws A from the both sides of the main body. (2) Raise the top cover in a direction that the arrow indicates.

  • Page 20: Adjustment

    http://www.xiaoyu163.com SECTION 4 3 7 63 1515 0 ADJUSTMENT This service manual does not describe ADJUSTMENT. L 13942296513 u163 1-6 (No.49758B) http://www.xiaoyu163.com...

  • Page 21: Troubleshooting

    http://www.xiaoyu163.com SECTION 5 3 7 63 1515 0 TROUBLESHOOTING This service manual does not describe TROUBLESHOOTING. L 13942296513 u163 (No.49758B)1-7 http://www.xiaoyu163.com...
  • Page 22 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49758B) Printed in Japan http://www.xiaoyu163.com...

  • Page 23: Schematic Diagrams

    KT-DB1000 3 7 63 1515 0 SCHEMATIC DIAGRAMS DAB Tuner Unit KT-DB1000 CD-ROM No.SML200209 L 13942296513 Area Suffix Continental Europe Contents Block diagrams Standard schematic diagrams Printed circuit boards u163 No.49758SCH COPYRIGHT 2002 VICTOR COMPANY OF JAPAN, LTD. Sep. 2002...
  • Page 24 http://www.xiaoyu163.com 3 7 63 1515 0 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. L 13942296513 u163 http://www.xiaoyu163.com...

  • Page 25: Block Diagram

    KT-DB1000 3 7 6 3 1 5 1 5 0 Block diagram ANTENNA 24.576MHz DAB TUNER DAB TUNER (A5V/A3.3V) (A5V/A3.3V) QAU0284-001 QAU0284-001 DAB BASEBAND DAB BASEBAND (D3.3V/A3.3V) (D3.3V/A3.3V) MN66720UC MN66720UC 2.048MHz CD CHANGER 3M DRAM 3M DRAM L-CH 36.864MHz...
  • Page 26 KT-DB1000 KT-DB1000 3 7 6 3 1 5 1 5 0 Standard schematic diagram MN66720UC 22/10 100/16 R704 22/10 C702 R703 R719 R718 4.7/25 C701 C709 C703 R720 22/10 R721 R702 R701 100/16 QAU0284-001 22/10 C704 R726 QSW0991-001 C710 UDZS3.6B...

  • Page 27: Ao Y

    KT-DB1000 <Wave form> 3 7 63 1515 0 IC1 Pin34 IC1 Pin35 IC1 Pin36 IC701 Pin13 L 13942296513 IC701 Pin50 IC802 Pin2 u163 http://www.xiaoyu163.com...
  • Page 28 KT-DB1000 3 7 63 1515 0 Printed circuit boards Main board (Forward side) Jack board (Forward side) C817 C810 C811 IC806 C818 X701 IC702 J911 10362- R773 C816 C812 IC851 IC804 IC701 C703 IC771 C851 IC772 R705 Q804 C803...
  • Page 29 http://www.xiaoyu163.com 3 7 63 1515 0 < M E M O > L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 30 KT-DB1000 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED MOBILE ELECTRONICS DIVISION PERSONAL & MOBILE NETWORK BUSINESS UNIT. 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan 200209 (No.49758SCH) http://www.xiaoyu163.com...
  • Page 31 3 7 63 1515 0 SCHEMATIC DIAGRAMS DAB Tuner Unit KT-DB1000 CD-ROM No.SML200506 Area suffix E ------------- Southern Europe L 13942296513 Digital Audio Broadcasting Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
  • Page 32 http://www.xiaoyu163.com Safety precaution 3 7 63 1515 0 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. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 33 http://www.xiaoyu163.com Block diagram 3 7 6 3 1 5 1 5 0 ANTENNA CD CHANGER L-CH DAB TUNER R-CH DAB BASE BAND MP2 DECODER L-CH IC911 MCLK R-CH IC501 IC901 Q121 AUDIO JBUS AUDIO OUT LPF AMP. Q221 SELECTOR (A5V) (9V) MUTE BICK...
  • Page 34 http://www.xiaoyu163.com Standard schematic diagram 3 7 6 3 1 5 1 5 0 (For E version) MN66720UC 22/10 100/16 R704 22/10 C702 R703 R719 R718 4.7/25 C701 C709 C703 R720 22/10 R721 R702 R701 100/16 QAU0284-001 22/10 C704 R726 QSW0991-001 C710 UDZS3.6B 10/16...
  • Page 35 http://www.xiaoyu163.com Standard schematic diagram 3 7 6 3 1 5 1 5 0 (For E2 version) NAX0651-001X LOCKDET MN66720DCUC 22/10 QAU0327-002 R704 C702 R718 R719 R703 C701 C709 C703 100/10 R720 0.01 R721 R702 100/10 R701 22/10 C704 R726 C710 QSW0991-001 UDZS3.6B 10/16...
  • Page 36 http://www.xiaoyu163.com Printed circuit board Printed circuit board 3 7 6 3 1 5 1 5 0 (For E version) (For E2 version) Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade) Forward side Forward side X701...
  • Page 37 http://www.xiaoyu163.com Wave form 3 7 63 1515 0 IC1 Pin34 IC1 Pin35 IC1 Pin36 IC701 Pin13 L 13942296513 IC701 Pin50 IC802 Pin2 u163 http://www.xiaoyu163.com...
  • Page 38 http://www.xiaoyu163.com 3 7 63 1515 0 L 13942296513 u163 Victor Company of Japan, Limited AV & MULTIMEDIA COMPANY CAR ELECTRONICS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49758BSCH) http://www.xiaoyu163.com...

  • Page 39: U163 Co M

    KT-DB1000 3 7 63 1515 0 PARTS LIST [ KT-DB1000 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ----------- Continental Europe L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 4 Electrical parts list (Block No.01)
  • Page 40 KT-DB1000 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 41 KT-DB1000 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area LV21339-002A BOTTOM CASE LV33795-002A TOP CASE QYSDST2606N SCREW QYSDST2606Z SCREW SPECIAL SCREW LV41152-001B QAM0421-001 CAR CABLE LV33864-001A NAME PLATE...
  • Page 42 KT-DB1000 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area NCB31CK-104X C CAPACITOR C 809 QEKJ1CM-106Z E CAPACITOR 10MF 20% 16V...
  • Page 43 KT-DB1000 3 7 63 1515 0 Electrical parts list (Main board) Electrical parts list (Main board) Block No. 01 Block No. 01 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area R 13 NRSA63J-221X...
  • Page 44 KT-DB1000 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A3~A5 A1,A2 L 13942296513 Parts list (Packing) Block No. M3MM Item Description Parts number Parts name Q'ty Area QPA00801205 POLY BAG QPA01202505 POLY BAG...
  • Page 45 3 7 63 1515 0 PARTS LIST [ KT-DB1000 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix E ------------- Southern Europe L 13942296513 - Contents - Exploded view of general assembly and parts list (Block No.M1) Electrical parts list (Block No.01) (KT-DB1000_E)
  • Page 46 http://www.xiaoyu163.com 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 47 http://www.xiaoyu163.com 3 7 63 1515 0 General Assembly Block No. [M][1][M][M] Symbol No. Part No. Part Name Description Local  LV21339-002A BOTTOM CASE LV22119-001A BOTTOM CASE LV33795-002A TOP CASE LV36150-001A TOP CASE QYSDST2606NA TAP SCREW M2.6 x 6mm(x2) QYSDST2606ZA TAP SCREW M2.6 x 6mm(x4) GE40235-004A SCREW...

  • Page 48: Electrical Parts List

    http://www.xiaoyu163.com 3 7 63 1515 0 Electrical parts list Main board (KT-DB1000_E)  Symbol No. Part No. Part Name Description Local Block No. [0][1] C121 QKJ1M-475Z CAPACITOR 4.7uF 25V M  Symbol No. Part No. Part Name Description Local C201 QKJ1M-475Z CAPACITOR 4.7uF 25V M...
  • Page 49 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local R203 NRSA63J-223X MG RSISTOR 22kΩ 1/16W J J911 QNZ0111-001 JACK R204 NRSA63J-472X MG RSISTOR 4.7kΩ 1/16W J QSW0991-001 SLID SWITCH Ω...
  • Page 50 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local  Symbol No. Part No. Part Name Description Local NBE41AM-226X TA E CAPACITOR 22uF 10V M NRSA63J-221X MG RESISTOR 220Ω 1/16W J NBE41AM-226X TA E CAPACITOR 22uF 10V M NRSA63J-681X MG RESISTOR...
  • Page 51 http://www.xiaoyu163.com 3 7 63 1515 0  Symbol No. Part No. Part Name Description Local R807 NRS181J-820X MG RESISTOR 82Ω 1/8W J R808 NRSA63J-822X MG RESISTOR 8.2kΩ 1/16W J R809 NRSA63J-183X MG RESISTOR 18kΩ 1/16W J R810 NRSA63J-154X MG RESISTOR 150kΩ...
  • Page 52 http://www.xiaoyu163.com 3 7 63 1515 0 Packing materials and accessories parts list Block No. No additional / supplemental order of WARRANTY CARDs are available A3,A4,A5 A1,A2 L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 53 http://www.xiaoyu163.com 3 7 63 1515 0 Packing and Accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local  LV43158-001A ANT BRACKET LV43158-002A ANT BRACKET QYSDST2606ZA TAP SCREW M2.6 x 6mm LVT0959-001B INST BOOK ENG GER FRE DUT LVT0959-002B INST BOOK SPA ITA SWE RUS...

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