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JVC KS-AX7300 Service Manual
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3 7 63 1515 0
SERVICE MANUAL
03
2003
49808
TE
L 13942296513
1
Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2
Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3
Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
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http://www.xiaoyu163.com
POWER AMPLIFIER
KS-AX7300
TABLE OF CONTENTS
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COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
http://www.xiaoyu163.com
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Area suffix
J ------------ Northern America
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No.49808
KS-AX7300
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2003/03

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Summary of Contents for JVC KS-AX7300

  • Page 1 KS-AX7300 3 7 63 1515 0 SERVICE MANUAL POWER AMPLIFIER 49808 2003 KS-AX7300 L 13942296513 Area suffix J ------------ Northern America TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .
  • Page 2: Important Safety Precautions

    KS-AX7300 3 7 63 1515 0 SECTION 1 Important Safety Precautions 1.1 Safety Precautions 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: Disassembly Method

    KS-AX7300 3 7 63 1515 0 SECTION 2 Disassembly method CAUTION: If electricity is connected during disassembly, it must be a no load current. If it is load current, be sure to attach a heat sink to the power-amp IC. This will be damaged if the above precautions are not followed, as it does not have a sub heat sink attached to it.
  • Page 4 KS-AX7300 3 7 63 1515 0 (5) Remove the 6 screws E retaining the panels on both sides Rear panel of the main unit. Fig.5 Front panel Fig.6 (6) Remove the 10 screws F attaching the Main board to the bottom of the main unit.
  • Page 5 KS-AX7300 3 7 63 1515 0 2.3 Removing the CCFL board (see Fig. 9 to 12) (1) Remove the bottom cover. (2) Then remove the Main board. CCFL cover (3) From the bottom side of the main unit, remove the 4 screws G retaining the CCFL cover.
  • Page 6: Adjustment

    KS-AX7300 3 7 63 1515 0 SECTION 3 Adjustment 3.1 Adjustment method (1) Check the voltage and frequency of the secondary toroidal FREQUENCY COUNTER coil. FREQUENCY:24.35kHz ± 50Hz VOLTAGE VALUE:55Vp-p TEST SET POWER SUPPLY 14.4V Main board Measuring Points...
  • Page 7 KS-AX7300 3 7 63 1515 0 L 13942296513 u163 (No.49808)1-7 http://www.xiaoyu163.com...
  • Page 8 KS-AX7300 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY MOBILE ENTERTAINMENT CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan (No.49808) Printed in Japan 200303WPC http://www.xiaoyu163.com...
  • Page 9 KS-AX7300 3 7 63 1515 0 SCHEMATIC DIAGRAMS POWER AMPLIFIER KS-AX7300 CD-ROM No.SML200303 L 13942296513 Area Suffix Northern America Contents Block diagrams Standard schematic diagrams Printed circuit boards 2-8~11 u163 No.49808SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/03...
  • Page 10 KS-AX7300 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 11 KS-AX7300 3 7 63 1515 0 Block diagram L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 12 KS-AX7300 3 7 63 1515 0 Standard schematic digrams Amp section 1 BOOST 0- 1 2dB VARI A BLE CROSSOVER(50-250Hz 12dB/ O CT VARI A BLE) C121 C127 C123 104P 473P 100/16V R115 R-IN C109 RCA01-A U101-A C110 C111...
  • Page 13 KS-AX7300 3 7 63 1515 0 +15V R157 R163 R153 Q105 Q102 KTA1266GR Q108 C140 R154 Q101 C142 330/16V KTC1027Y KTC3198GR KTC3198GR 4.3K 220P PROTECTION Q116 KTC3200GR Q110 C111 C112 D718 R158 R159 R164 R173 R177 473(M) 10/16V JSS2319 4.3K...
  • Page 14 KS-AX7300 3 7 63 1515 0 Amp section 2 CROSSOVER(50-250Hz 12dB/OCT VARIABLE) BOOST 0-12dB VARIABLE C323 C321 100/16V 104P R315 R-IN C309 RCA03-A U301-A C310 C311 KJB-582C C301 R302 C305 NJM2068LD R308 VR301A R314 473(M) 473(M) 10/1 4.7/50V 20.5KF...
  • Page 15 KS-AX7300 3 7 63 1515 0 +15V R357 R363 R353 Q305 KTA1266GR C340 R354 Q301 Q302 Q308 4.3K C342 330/16V KTC3198GR KTC1027Y KTC3198GR 220P Q316 PROTECTION KTC3200GR Q310 C311 C112 R377 D718 R358 R359 R364 R373 473(M) 10/16V JSS2319 4.3K...
  • Page 16 KS-AX7300 3 7 63 1515 0 Power supply / CCFL section CCFL-INVERTER PCBOARD R801 Q802 1.5K/0.5W C1027Y Q803 L801 C801 CL-1617 C2690Y CL-10 473(M)'100V V-IN R804 Q801 C804 C1027Y 104P R802 4.7M/0.5W C803 D801 103P 1N5241 R803 4.7M/0.5W Q701...
  • Page 17 KS-AX7300 3 7 63 1515 0 Q790 TIP117 +12V R791 2.2/0.5W R792 2.2K C706 C705 104P 47/16V KTD-9217 L701 CL-310 +12V D.C D701 C709 1N5404 C702 D702 1N4004 U703 D731 R770 KIA7815PI FR154x4 100/2W +15V D732 C763 C765 C761...
  • Page 18 KS-AX7300 3 7 63 1515 0 Printed circuit boards Main board (forward side) C702 R278 C445 C345 D701 C245 R701 L701 Q756 C793 C750 R756 C791 Q755 CCFL R755 R790 Q780 R782 Q745 C770 C780 C769 C761 R745 Q746...
  • Page 19 KS-AX7300 3 7 63 1515 0 Main board (reverse side) C702 C245 R278 D701 C345 L701 R701 C751 Q756 C793 C791 R756 Q755 C750 CCFL R790 R755 SUB2 SUB1 Q780 Q745 C761 C770 R745 C769 Q746 REAR R746 R-IN...
  • Page 20 KS-AX7300 3 7 63 1515 0 CCFL board Sub board (forward side) R432 R408 R309 R802 R409 C414 R308 C307 C325 +12V(RED) R330 R311 R310 C313 GND(BLACK) C308 R411 C413 R312 R410 R315 C312 C803 U302 D801 C412 U303...
  • Page 21 KS-AX7300 3 7 63 1515 0 Sub board (reverse side) R432 R330 C313 C413 R315 C312 C412 U303 R431 R417 R318 R415 R316 R416 C410 C310 U304 L 13942296513 C411 C311 U305 U105 C211 C111 U104 C210 C110 R216...
  • Page 22 KS-AX7300 3 7 63 1515 0 L 13942296513 u163 VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan (No.49808SCH) 2003/03 http://www.xiaoyu163.com...
  • Page 23 KS-AX7300 3 7 63 1515 0 PARTS LIST [ KS-AX7300 ] * All printed circuit boards and its assemblies are not available as service parts. Area suffix J -------------- Northern America L 13942296513 - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 4 Electrical parts list (Block No.01~03)
  • Page 24 KS-AX7300 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
  • Page 25 KS-AX7300 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area HEA-01-530AA HEAT SINK MAFPIT6859-0 FRONT PANEL MARPIT6864-0 REAR PANEL MABCIT6867-0 BOTTOM COVER MATC058406-0 CONTROL PANEL MASO051491-1 CCFL COVER...
  • Page 26 KS-AX7300 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 BJ101 25M/M JUMPER C348 ELE22UF/16V E.CAPACITOR CCFL LWL0640-2P WAFER C349 MAL473M50V...
  • Page 27 KS-AX7300 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 D101 1N4148 GE DIODE Q401 KTC3198GR TRANSISTOR D201 1N4148 GE DIODE...
  • Page 28 KS-AX7300 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 R203 MET1/5WF22K METAL RESISTOR R396 MET1/5WF150K METAL RESISTOR R205 MET1/5WF56K METAL RESISTOR...
  • Page 29 KS-AX7300 3 7 63 1515 0 Electrical parts list (Main board) Block No. 01 Item Remarks Parts number Parts name Area R755 CAR1/5WJ100 CARBON RESISTOR R756 CAR1/5WJ100 CARBON RESISTOR R760 MET2WJ220 RESISTOR R770 MET2WJ100 METAL RESISTOR R771 MET2WJ100 METAL RESISTOR...
  • Page 30 KS-AX7300 3 7 63 1515 0 Electrical parts list (Sub board) Block No. 02 Item Parts number Parts name Remarks Area Item Parts number Parts name Remarks Area CON01 TM2007-T14G-09 HEADER PIN R132 CAR1/5WJ22K CARBON RESISTOR CON02 TM2007-T14G-09 HEADER PIN...
  • Page 31 KS-AX7300 3 7 63 1515 0 Electrical parts list (Sub board) Block No. 02 Item Parts number Parts name Remarks Area R436 CAR1/5WJ1K CARBON RESISTOR R437 CAR1/5WJ20K CARBON RESISTOR R438 CAR1/5WJ330K CARBON RESISTOR R439 CAR1/5WJ5.6K CARBON RESISTOR R440 CAR1/5WJ680K...
  • Page 32 KS-AX7300 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1,A2,A7 L 13942296513 u163 3-10 http://www.xiaoyu163.com...
  • Page 33 WARRANTY CARD CHD1140-N CONNECTOR ASSY 2 300M/M-4P-A FUSE20A/32V AUTO FUSE MOCU014167-0 RING RUBBER MBSC02240-20 SCREW 4 STT1 BH 4X20 BK BT-20071B JVC CENTER LIST MDLA058422-0 CAUTION SHEET K I T KSAX6300-SCREW SCREW PARTS KIT 1 A5,A6,P6 L 13942296513 u163 3-11 http://www.xiaoyu163.com...