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3 7 63 1515 0
SERVICE MANUAL
03
2003
49809
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-AX7700
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.49809
KS-AX7700
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2003/03
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Summary of Contents for JVC KS-AX770
- Page 1 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 SERVICE MANUAL POWER AMPLIFIER 49809 2003 KS-AX7700 L 13942296513 Area suffix J ------------ Northern America TABLE OF CONTENTS Important Safety Precautions ............1-2 Disassembly method .
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Page 2: Important Safety Precautions
http://www.xiaoyu163.com KS-AX7700 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. L 13942296513 u163 1-2 (No.49809) -
Page 3: Disassembly Method
http://www.xiaoyu163.com KS-AX7700 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. - Page 4 http://www.xiaoyu163.com KS-AX7700 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 13 screws F attaching the main board to the bottom of the main unit.
- Page 5 http://www.xiaoyu163.com KS-AX7700 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.
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Page 6: Adjustment
http://www.xiaoyu163.com KS-AX7700 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±10Hz POWER SUPPLY VOLTAGE VALUE:55Vp-p 14.4V TEST SET Main board Measuring Points L 13942296513 (2) Measure the secondary toroidal coil, if the standard frequency value of 24.35 kHz ±10 Hz is not attained, measure the R760 terminal, then adjust the VR701 so that... - Page 7 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 L 13942296513 u163 (No.49809)1-7 http://www.xiaoyu163.com...
- Page 8 http://www.xiaoyu163.com KS-AX7700 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.49809) Printed in Japan 200303WPC http://www.xiaoyu163.com...
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Page 9: Schematic Diagrams
http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 SCHEMATIC DIAGRAMS POWER AMPLIFIER KS-AX7700 CD-ROM No.SML200303 L 13942296513 Area Suffix Northern America Contents Block diagrams Standard schematic diagrams Printed circuit boards 2-8~9 u163 No.49809SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/03 http://www.xiaoyu163.com... - Page 10 http://www.xiaoyu163.com KS-AX7700 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 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Block diagram L 13942296513 u163 http://www.xiaoyu163.com...
- Page 12 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Standard schematic diagrams Amp section BOOST 0-12dB(45Hz) VARIABLE CROSSOVER(50-250Hz 12dB/OCT VARIABLE) SUB-2 C121 C123 104P 104P R115 SUB-1 R-IN C109 U101-A RCA01A C110 C111 C112 C101 R102 C105 NJM2068LD SY-SW0406-82 R108 VR101B R114 473(M) 473(M) 2.2/50V...
- Page 13 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 H.VCC C144 C145 104P 100/63V R143 R142 R152 +15V C190 330/16V D143 Q142 Q143 IN4148 KTA1023Y KTA1023Y C146 R161 Q161 100P IRF640 Q163 Q171 IRF640 KTA1023Y Q165 R181 IRF640 A1220Y Q148 JSS2319 R186 R169 TMN004-02 SW101A...
- Page 14 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Power section CCFL-INVERTER PCBOARD Q701 R701 KTA1023Y 68/0.5W R801 Q802 1.5K/0.5W C1027Y Q803 L801 C801 C701 C2690A CL-113 473/100V V-IN 10/25V R702 4.7K R804 Q801 R703 C1027Y C804 4.7K 104P R802 Q702 4.7M/0.5W C803 D801 R715...
- Page 15 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 R791 Q790 2.2/0.5W CON01 TIP117 CCFL+12V R792 2.2K C706 C705 TMN005-01 Q701 R701 25AX2 L701 104P 47/25V KTA1023Y 68/0.5W CL-900A +12V D.C C862 C861 R702 D701 C860 104P 223P 4.7K 1N5404 R703 4.7K Q702 C868 R705...
- Page 16 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Printed circuit boards Main board (forward side) C291 C191 C860 L102 L202 L701 U701 C731 C753 R747 B.K RED R746 R745 R744 R755 C769 PAM37801 R756 C760 C771 H.VCC R757 L 13942296513 C791 R777 16x20 R778...
- Page 17 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Main board (reverse side) C191 C291 C860 L102 RUBBER2 RUBBER1 L701 C753 U701 R747 R746 R745 R744 R755 C760 R756 H.VCC C769 R757 L 13942296513 RUBBER3 R777 C791 D734 R778 D731 C767 C762 H-VCC L-F.IN L-F.OUT...
- Page 18 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Sub board (forward side) Sub board (reverse side) R108 R109 C107 R209 C207 R208 C125 R210 R110 R212 R112 C208 U102 VR103 C217 L 13942296513 C214 C114 R132 R130 C113 R115 C213 C112 R118 R216 R116...
- Page 19 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 CCFL board R802 R802 +12V(RED) GND(BLACK) C803 D801 C804 L 13942296513 L801 R801 J101 C805 C801 u163 http://www.xiaoyu163.com...
- Page 20 http://www.xiaoyu163.com KS-AX7700 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.49809SCH) 2003/03 http://www.xiaoyu163.com...
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Page 21: Parts List
http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 PARTS LIST [ KS-AX7700 ] * 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) 3- 8... - Page 22 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Exploded view of general assembly and parts list Block No. L 13942296513 u163 http://www.xiaoyu163.com...
- Page 23 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Parts list (General assembly) Block No. M1MM Item Description Parts number Parts name Q'ty Area HEA-01-531AA HEAT SINK MAFPIT6861-0 FRONT PANEL MARPIT6866-0 REAR PANEL MABCIT6867-0 BOTTOM COVER CONTROL PANEL MATC058408-0 MASO051491-1 CCFL COVER MABR031494-0 TR BRACKET A TR BRACKET B...
- Page 24 http://www.xiaoyu163.com KS-AX7700 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 35M/M BAR JUMPER C 740 STI102G S CAPACITOR 50V 2% C 101 ELE4.7UF/50V E CAPACITOR...
- Page 25 http://www.xiaoyu163.com KS-AX7700 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 16M/M TEFLON TUBE 0.7PHI R 133 CAR1/5WJ100K CARBON RESISTOR LED01 KLR124-E R 141 MET1/5WF5.6K RESISTOR...
- Page 26 http://www.xiaoyu163.com KS-AX7700 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 R 263 CAR1/5WJ47 CARBON RESISTOR R 853 CAR1/5WJ4.7K CARBON RESISTOR R 264 CAR1/5WJ330 RESISTOR RCA01...
- Page 27 http://www.xiaoyu163.com KS-AX7700 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 C 107 CER470PF/50V C CAPACITOR R 238 CAR1/5WJ330K CARBON RESISTOR C 108 CER33PF/50V C CAPACITOR R 239...
- Page 28 http://www.xiaoyu163.com KS-AX7700 3 7 63 1515 0 Packing materials and accessories parts list Block No. Block No. A1,A2,A7 L 13942296513 u163 http://www.xiaoyu163.com...
- Page 29 BT-52006-2 WARRANTY CARD CHD1140-N CONNECTOR ASSY 1 300M/M-4P -A FUSE25A/32V AUTO FUSE MOCU014167-0 RUBBER RING MBSC02240-20 SCREW 4 STT1 BH 4X20 BK BT-20071B JVC CENTER LIST MDLA058422-0 CAUTION SHEET KSAX6300-SCREW SCREW PARTS KIT 1 A5A6 P6 L 13942296513 u163 http://www.xiaoyu163.com...