JVC TK-C720TPU Service Manual
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SERVICE MANUAL
COLOR VIDEO CAMERA
TK-C720TPU/TK-C720TPE
Shown with optional lens
No. 60142
June 2002
100% recycled paper
COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.

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Summary of Contents for JVC TK-C720TPU

  • Page 1 SERVICE MANUAL COLOR VIDEO CAMERA TK-C720TPU/TK-C720TPE Shown with optional lens No. 60142 June 2002 100% recycled paper COPYRIGHT © 2002 VICTOR COMPANY OF JAPAN, LTD.
  • Page 2: Table Of Contents

    TABLE OF CONTENTS Section Title Page Section Title Page INSTRUCTIONS 4. EXPLODED VIEW AND ASSEMBLY PARTS LIST ASSEMBLY M 1 ............4-1 1. DISASSEMBLY REPLACING THE FUSE ..........1-1 REMOVAL OF CIRCUIT BOARDS ......1-1 5. ELECTRICAL PARTS LIST REPLACING THE CCD IMAGE SENSOR ....1-3 CCD BOARD ASSEMBLY PARTS LIST 0 1 ....
  • Page 3: Disassembly

    SECTION 1 DISASSEMBLY REPLACING THE FUSE (2) Turn the main unit over and then remove the four screws CAUTION Before replacing the fuse, check the cause of the fuse blow in order to prevent a recurrence of the problem, repair and confirm its normal operation. For safety and to protect the equipment, be sure to replace the fuse with the one having the specified parts number.
  • Page 4 Ç (5) Disconnect the wire (10) Turn over the main unit, remove the two screws , and ´ Ï (6) Pull out the PRO board in the direction of the arrow, and then detach the heat sink and the chassis then remove the PRO board together the TP board.
  • Page 5: Replacing The Ccd Image Sensor

    REPLACING THE CCD IMAGE SENSOR (3) Remove the CCD image sensor which soldering on the CCD board. Note: • The image sensor is interchangeable only with a speci- fied image sensor. • New image sensors and crystal filters should be han- dled so as not to leave fingerprints or grease on their CCD board glass surfaces.
  • Page 6: Servicing Of Circuit Boards

    SERVICING OF CIRCUIT BOARDS Note: Connect the VIDEO OUT +/- terminals, which are on the (1) As a consequence of 1.2, remove the each board. rear panel, to the +/- terminals on the receiver using twisted (2) By connecting the each board as shown in fig.1-4-1. pair cable.
  • Page 7: Electrical Adjustments

    EVR with a computer. • CCD board CCD Image sensor ICX058CK-A for TK-C720TPU, ICX059CK-A for TK-C720TPE • PRO board IC205 EEPROM AK6420AM 2.1 REQUIRED MEASURING INSTRUMENTS FOR ADJUSTMENTS...
  • Page 8: Required System For Adjustments

    2.1.3 Required system for adjustments Equipments Specifications Computer 486DX4/100MHz or higher micro processor (Recommended Pentium Processor) Operating system Windows 95 or Windows 98 Memory 16M Byte or more 3.5 inch (1.44 MB) floppy diskette drive I/O port Serial port Hard disk unit 1 MB hard disk space 2.1.4 Required instruments for adjustment Program disk...
  • Page 9: Standard Setup

    2.2 STANDARD SETUP POWER SUPPLY DC 12V MONITOR To install the camera in the Camera stand, install Tripod base in the Upper cover. Lens Infinity adjustment lens Light box YTU92001B YTU93096A Remove the bottom cover of camera and connect this connector to CN200 on the Supply PRO board.
  • Page 10: Notes

    2.4 NOTES 2.4.1 Installation 2.4.3 What is “Initial Data” To install the adjustment program, perform the following proce- The initial data loaded at “2.5 INITIALIZE” consists of preset dure. adjustment values. Therefore, once the adjustment procedure 1) If you have any programs currently installed in the serial I/O is started, all adjustment should be done from beginning to the port, remove them.
  • Page 11: Initialize

    Measuring point (*) Measuring instrument & Adjustment parts (-) Item Mode Adjustment procedure Adjustment level (+) Input signals 2.5 INITIALIZE 1) Select either “TK-C720U.cor” for TK- C720TPU or “TK-C720E.cor” for TK-C720TPE to on Scenario file define adjustment. 2) Selecting either “NEXT” or “BACK” button to be initialized the camera data.
  • Page 12: Adjustment Of Ccd

    Measuring point (*) Measuring Adjustment parts (-) Item instrument & Mode Adjustment procedure Adjustment level (+) Input signals 2.7 ADJUSTMENT OF CCD * TP200 [PRO] VSUB voltage Digital voltmeter 1) Click the “NEXT” button to display “V volt- - VSUB [CAT: DCREF, adjustment age”...
  • Page 13: Adjustment Of Video Signal

    Measuring point (*) Measuring Adjustment parts (-) Item instrument & Mode Adjustment procedure Adjustment level (+) Input signals 2.8 ADJUSTMENT OF VIDEO SIGNAL * MONITOR OUT White clip Oscilloscope 1) Select the “NEXT” button to display “White adjustment (H-rate: 10:1) or (75 ohm Termination) clip”...
  • Page 14 Measuring point (*) Measuring Adjustment parts (-) Item instrument & Mode Adjustment procedure Adjustment level (+) Input signals * MONITOR OUT Setup level Oscilloscope 1) Select the “NEXT” button to display “Setup adjustment (H-rate: 10:1) or (75 ohm Termination) level” on the title bar. - SETUP W.F.M.
  • Page 15: Adjustment Of White Balance

    Measuring point (*) Measuring Adjustment parts (-) Item instrument & Mode Adjustment procedure Adjustment level (+) Input signals 2.9 ADJUSTMENT OF WHITE BALANCE Note: When the AWBCNT and INTGR data are displayed in the show controls box by pressing the button, data contain- ing “B7”...
  • Page 16 Measuring point (*) Measuring Adjustment parts (-) Item instrument & Mode Adjustment procedure Adjustment level (+) Input signals * MONITOR OUT White Gray scale chart 1) Click the “NEXT” button. balance (75 ohm Termination) 2) Adjust the lens iris to obtain the specified level - LENS IRIS adjustment filter...
  • Page 17 Measuring Measuring point (*) Adjustment parts (-) Item instrument & Mode Adjustment procedure Adjustment level (+) Input signals * MONITOR OUT White – (no chart) 1) Click the “NEXT” button. balance (75 ohm Termination) 2) Adjust the lens iris to obtain the specified level - LENS IRIS adjustment (2) filter...
  • Page 18: Adjustment Of Chroma Signal

    Measuring Measuring point (*) Adjustment parts (-) instrument & Item Mode Adjustment procedure Adjustment level (+) Input signals 2.10 ADJUSTMENT OF CHROMA SIGNAL * MONITOR OUT Color level Oscilloscope 1) Select the “NEXT” button to display “Color and hue (H-rote, 10:1) or (75 ohm Termination) level and Hue”...
  • Page 19 Focus chart VICTOR COMPANY OF JAPAN, LIMITED Printed in Japan (S) T, A...
  • Page 20: Charts And Diagrams

    OVERALL WIRING DIAGRAM SECTION 3 CHARTS AND DIAGRAMS SCHEMATIC DIAGRAM NOTES REPLACING SUBMINIATURE “CHIP” PARTS • Schematic safety precaution • Some resistors, shorting jumpers (0 ohm resistance), ceramic CN200 ! Parts are safety related parts. capacitors, transistors, and diodes are chip parts. These chip (See Sec.
  • Page 21: Block Diagram

    BLOCK DIAGRAM CCD BOARD PRO BOARD ON/OFF BLC SW PBLK Drive pulse IC202 SYNC IC215 Q221 Buffer VSS1 Buffer VIDEO IRIS XSHP VSS2 VSUB XSHP Q214-216 XSHD VSS3 XSHD IC215 driver DC IRIS CLPOB ADCK ADCK VSUB OSCO RG driver IC212 Q101 TP201...
  • Page 22: Ccd Board Schematic Diagram

    CCD BOARD SCHEMATIC DIAGRAM CCD CIRCUIT BOARD SIDE A R108 100k 14.6 R109 FROM/TO PRO CN1 ( Page 3-4 ) R110 -0.2 -0.2 -7.9 -7.9 14.8 R111 14.1 -8.3 TP101 C103 SC93524 2200p...
  • Page 23: Pro Board Schematic Diagram

    Q203 R248 OPEN FINE MSD1819A OPEN S&H COMPARATE FINE & LATCH Q204 ENCODE OPEN C277 IC208 OPEN OPEN A/D CONVERTER FROM/TO TER CN6 (Page 3-7) SYMBOL SC92719 R294 R295 C303 L201 X200 MODEL TK-C720TPU OPEN NAX0022-001X TK-C720TPE OPEN 8.2u NAX0021-001X...
  • Page 24: Pro Circuit Board

    PRO CIRCUIT BOARD SIDE A SIDE B ADDRESS TABLE OF BOARD PARTS Each address may have an address error by one interval. A-1C Side Y axis X axis IC200 A-2D Q206 A-6C D208 B-5C R218 B-3A R244 A-4C R270 B-7B R296 B-7D R326...
  • Page 25: Ee Board Schematic Diagram

    EE BOARD SCHEMATIC DIAGRAM FROM/TO POW CN3 (Page 3-8) FROM/TO TER CN100 (Page 3-7) AC24V/DC12V(-) AC24V/DC12V(-) MONITOR OUT SC93523 FROM/TO PRO CN2 (Page 3-4)
  • Page 26: Ee Circuit Board

    EE CIRCUIT BOARD TER BOARD SCHEMATIC DIAGRAM FROM/TO PRO CN6 SIDE B (Page 3-4) (D108) (D110) (D109) (D111) FROM/TO EE CN500 (Page 3-6) ADDRESS TABLE OF BOARD PARTS Each address may have an address error by one interval. Y axis X axis IC501 D501...
  • Page 27: Pow Board Schematic Diagram

    3.11 POW BOARD SCHEMATIC DIAGRAM FROM/TO EE CN501 ( Page 3-6 ) QQS0147-001 T500 C504 1000P/250 C550 2200P/250 SC93525 3.12 POW CIRCUIT BOARD SIDE B ADDRESS TABLE OF BOARD PARTS Each address may have an address error by one interval. Y axis X axis IC530...
  • Page 28: Tp Board Schematic Diagram

    3.13 TP BOARD SCHEMATIC DIAGRAM 3.14 TP CIRCUIT BOARD SIDE A FROM/TO PRO CN5 3.9 8.5 4.0 4.1 ( Page 3-4 ) 3.0 2.9 ADDRESS TABLE OF BOARD PARTS Each address may have an address error by one interval. A-1C Side Y axis X axis...
  • Page 29: Block Diagrams Of Ic's

    3.15 BLOCK DIAGRAMS of IC'S AK6420AM-X [ASAHIKASEI] CXA2006Q [SONY] (2048 bits (128 Words X 16 bits) EEPROM) (Digital CCD Camera Head Amplifier) CD74HC4053PW-X [TEXAS INSTRUMENTS] (Analog Multiplexers/Demultiplexers) TRUTH TABLE AN8085M-X [MATSUSHITA] BA10358F-XE [ROHM] (REG Servo) (Dual Ground Sense Op.Amp.) INPUT STATES “ON”...
  • Page 30 CXD2312R [SONY] CXD2163AR [SONY] (9 bit 20 MSPS Video A/D Converter) (Digital signal processor for single chip CCD color video camera) 3-11 3-11...
  • Page 31 (3) NTSC Vertical Timing Chart (1) 760H NTSC Horizonlal Timing Chart (2) 760H PAL Horizonlal Timing Chart (4) PAL Vertical Timing Chart 3-12 3-12...
  • Page 32 CXD2480R [SONY] (Timing Control with CCD Drivers) 3-13 3-13...
  • Page 33 ICX058CK [SONY] (1/3 Inch CCD Image Sensor for NTSC Color Camera) 3-14 3-14...
  • Page 34 ICX059CK [SONY] (1/3 Inch CCD Image Sensor for PAL Color Camera) 3-15 3-15...
  • Page 35 MB88347PFV-X [FUJITSU] NJM2267V-W [JRC] (Dual 6dB Video Amplifier including 75 Ω Driver) (D/A Convertor) NJM431U-X [JRC] NJM78L15UA-X [JRC] (Adjustable Precision Shunt Regulator) (3-Terminal Positive Voltage Regulator (+15V)) 3-16 3-16...
  • Page 36 NJM2509V-W [JRC] NJM2870F05-X [JRC] TC4W53F-X [TOSHIBA] UPC358G2-WE [NEC] (Super Imposer including Y/C MIX Circuit) (Regulator) (2-Channel Multiplexer) (Dual Op.Amp.) 1.CONTROL(Active High) 2.GND 3.NOISE BYPASS (Top View) Cont Thermal Protection Noi se By pass Bandgap TC74HC08AF-X [TOSHIBA] Reference (Quad 2-Input AND Gates) NJM2870F33-X [JRC] (Refer to NJM2870F05-X.) UPD5556G-WE [NEC]...
  • Page 37: Exploded View And Assembly Parts List

    *2 Attached a protection sheet to R504 in order Replace only with specified parts numbers. to prevent Q504 from grounding. NOTE POW BOARD Parts not denoted by parts numbers are not supplied by JVC. PRO BOARD TP BOARD Upper EE BOARD...
  • Page 38 ASSEMBLY PARTS LIST M 1 M M ` ` ` ` Symbol Part No. Part Name Description 1 SC32036H-001 2 SC40286H-001 SHEET 3 SC20729H-001 FRONT FRAME 4 SC46597H-001 COIL SPRING 5 SC20730H-001 SENSOR BASE 6 SC32334H-001 ADJUST SPRING 7 SC46598H-001 LEAF SPRING 8 SC46599H-001 HOLDER PLATE...
  • Page 39: Electrical Parts List

    Parts identified by the ! symbol are criticaI for safety. Replace only with specified parts numbers. For maximum reliability and performance, all other replacement parts should be identical to those specified. NOTE: ● Parts not denoted by parts numbers are not supplied by JVC. ● Abbreviations in this list are as follows: RESISTORS CAPACITORS In the “Description”...
  • Page 40: Ccd Board Assembly Parts List 0 1

    5.1 CCD BOARD ASSEMBLY PARTS LIST 5.2 PRO BOARD ASSEMBLY PARTS LIST SCK2617-01-N2A(U) SCK2683-02-N0A(U) 0 2 ` ` ` ` ` ` 0 1 ` ` ` ` ` ` SCK2617-01-P2A(E) SCK2683-02-P0A(E) Symbol Symbol Part No. Part Name Description Part No. Part Name Description Q101...
  • Page 41 [PRO] Symbol Symbol Part No. Part Name Description Part No. Part Name Description R217 NRSA63J-0R0X M.G.RESISTOR 1/16W R305 NRSA63J-201X M.G.RESISTOR 1/16W R218 NRSA63J-333X M.G.RESISTOR 1/16W R306 NRSA63J-392X M.G.RESISTOR 3.9k 1/16W R219 NRSA63J-0R0X M.G.RESISTOR 1/16W R307 NRSA63J-222X M.G.RESISTOR 2.2k 1/16W R308 NRSA63J-102X M.G.RESISTOR 1/16W...
  • Page 42 Symbol Symbol Part No. Part Name Description Part No. Part Name Description C241 NCF31CZ-104X CER.CAPACITOR C322 NCF31CZ-104X CER.CAPACITOR C242 NBE21CM-105X TAN.CAPACITOR C243 NBE21CM-105X TAN.CAPACITOR C323 NCF31CZ-104X CER.CAPACITOR C324 NDC31HJ-101X CER.CAPACITOR 100p C244 NCF31CZ-104X CER.CAPACITOR C325 NDC31HJ-101X CER.CAPACITOR 100p C245 NCF31CZ-104X CER.CAPACITOR C326 NBE71VM-106X...
  • Page 43: Ee Board Assembly Parts List 0 3

    5.3 EE BOARD ASSEMBLY PARTS LIST 5.4 TER BOARD ASSEMBLY PARTS LIST 0 3 ` ` ` ` ` ` 0 4 ` ` ` ` ` ` SCK2618-03-00A SCK2685-01-00A Symbol Symbol Part No. Part Name Description Part No. Part Name Description IC501 BA10358F-XE...
  • Page 44: Pow Board Assembly Parts List 0 5

    5.5 POW BOARD ASSEMBLY PARTS LIST SCK2618-01-N0A(U) 0 5 ` ` ` ` ` ` SCK2618-01-P0A(E) Symbol Symbol Part No. Part Name Description Part No. Part Name Description IC530 NJM431U-X I.C.(M) QGB1206P1-12 CONNECTOR 12PIN Q500 2SC3311A/RS/-T TRANSISTOR MATSUSHITA FC500 QNG0026-001 FUSE CLIP Q501 2SC3311A/RS/-T...
  • Page 45: Tp Board Assembly Parts List 0 6

    5.6 TP BOARD ASSEMBLY PARTS LIST 0 6 ` ` ` ` ` ` SCK2685-02-00A Symbol Symbol Part No. Part Name Description Part No. Part Name Description IC400 NJM2267V-W I.C.(M) Q400 MSC3930/B/-X TRANSISTOR MOTOROLA D400 MA739-X DIODE MATSUSHITA D401 MA739-X DIODE MATSUSHITA D402...
  • Page 46: Packing

    SECTION 6 PACKING INSTRUCTIONS LWT0035 (ENGLISH, FRENCH, SPANISH) INSTRUCTIONS LWT0036 (TK-C720TPE) (GERMANY, ITALIAN, CHINESE) WARRANTY CARD (USA shipping only for 4P PLUG TK-C720TPU) SCV2859-001 CARTON BOX Note: Accessories above are subject to change without notice.
  • Page 47 VIDEO IRIS VIDEO LEVEL COLOR VIDEO CAMERA IRIS VIDEO LEVEL COLOR VIDEO CAMERA IRIS VIDEO LEVEL COLOR VIDEO CAMERA...
  • Page 48 IRIS VIDEO LEVEL BF LOCK...

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