JVC KS-AX4500, Service Manual

Page 1: ...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 Contents Safety precaution Location of main parts Removal of main parts Test method Description of major ICs 1 2 1 3 1 5 1 7 1 8 Area Suffix E J Continental Europe Northern America ...

Page 2: ...KS AX4500 1 2 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: ...R INPUT for POWER FUSE OUTPUT TERMINAL for REAR L R FRONT PANEL HIGH INPUT connector for REAR LOW INPUT jack for REAR L LOW INPUT jack for FRONT L HIGH INPUT connector for FRONT HEAT SINK LOW INPUT jack for REAR R LOW INPUT jack for FRONT R CONTROL PANEL HEAT SINK SWITCH KNOB VOLUME KNOB ...

Page 4: ...KS AX4500 1 4 GND wire MAIN PCB SUB PCB DIODE POWER TRANSISTER HEAT SINK Bottom view MAIN PCB POWER TRANSISTER POWER FET ...

Page 5: ...e base of the volume knob and the control panel so that the volume knob is raised a little above the surface and then remove it Be careful when inserting a lever etc not to scratch the surface of the control panel Remove the 4 screws D retaining the control panel Then detach the control panel and the switch knobs 3 4 Removing the MAIN PCB see Fig 2 to 8 Side view Rope or wire Volume knob Control p...

Page 6: ...anels on both sides of the main unit 5 Remove the MAIN PCB by lift up the arrow mark 7 Remove the 14 screws F attaching the MAIN PCB to the bottom of the main unit 6 Fig 7 Fig 5 Fig 6 Fig 8 Rear panel E E E E MAIN PCB F MAIN PCB Side view Front panel F F ...

Page 7: ...inal becomes 22 87 kHz 50Hz Note TEST SET FREQUENCY COUNTER MAIN PCB POWER SUPPLY 14 4V 60Vp p 2 5V DC DC CONVERTER SECOND GENERATOR SWITCHING TEST ITEM VOLTAGE TEST FREQUENCY CHECK 60Vp p 2 5V 22 87KHz 50Hz OSCILLOSCOPE VOLT DIV 10 TIME DIV 10mcec SPECIFICATION CONDITION FREQUENCY 22 87kHz 50Hz VOLTAGE VALUE 60Vp p 2 5V When measuring adjust and apply power with no signal or load on each board 5 ...

Page 8: ... PWN Comp Input Dead Time Control Ground C1 CT RT Noninv Input Inv Input Vref Output Control E2 E1 VCC C2 Dead Time Comparator UV Lockout PWM Comparator Oscillator 1 2 Q D Ck Q Flip Flop Q1 Q2 Reference Regulator 0 7mA 0 7V 0 12V 3 5V 4 9V 8 13 9 11 10 12 7 14 16 15 3 2 1 4 5 6 TL494 Description of major ICs ...

Page 9: ...KS AX4500 Printed in Japan 200104 S No 49622 VICTOR COMPANY OF JAPAN LIMITED MOBILE ELECTRONICS DIVISION PERSONAL MOBILE NETWORK B U 10 1 1Chome Ohwatari machi Maebashi city Japan ...

Page 10: ...it boards and its assemblies are not available as service parts Contents Exploded view of enclosure assembly and parts list Electrical parts List Packing and accessories KS AX4500 3 2 3 4 3 9 Areas suffix E Continental Europe J Northern America ...

Page 11: ...6 21 21 21 1 21 21 21 21 2 16 20 18 19 18 19 27 27 26 19 26 29 25 22 16 13 12 26 26 18 19 10 11 13 12 17 15 14 23 23 3 23 23 22 4 22 22 22 17 15 14 22 22 8 Exploded view of enclosure assembly and parts list Block No M M M 1 1 4 20 4 4 20 3 4 20 2 4 ...

Page 12: ...30 08 MNSC 04 2 30 06 MNC 00 3 40 14 MNSC 04 6 30 06 MZSC 04 5 30 08 MZSC 04 5 30 13 MZSC 04 5 30 10 MNSC 00 1 40 7 MNSC 04 3 30 06 MOWA 05 8085 0 MAIN HEAT SINK FRONT PANEL REAR PANEL BOTTOM COVER CONTROL PANEL PIPE TOP PANEL VOLUME KNOB SWITCH KNOB SUB HEAT SINK A SUB HEAT SINK B TR BRACKET C TR BRACKET D TR BRACKET E TR BRACKET F TR BKT CUSHION B TR BKT CUSHION C RUBBER CUSH A RUBBER CUSH B SIL...

Page 13: ... C CAPACITOR CERAMIC DISK 50 C 138 CER56PF 50V C CAPACITOR CERAMIC DISK 50 C 139 ELE100UF 16V E CAPACITOR ELECTROLYTIC C 140 CER150PF 50V C CAPACITOR CERAMIC DISK 50 C 141 MAL104J 50V M CAPACITOR MYLAR 50V 5 C 142 CER104PF 50V C CAPACITOR CERAMIC DISK 50 C 151 ELE220UF 16V E CAPACITOR ELECTROLYTIC C 161 ELE4 7UF 50V E CAPACITOR ELECTROLYTIC C 162 ELE4 7UF 50V E CAPACITOR ELECTROLYTIC C 163 CER102P...

Page 14: ... CERAMIC DISK 50 C 464 CER102PF 50V C CAPACITOR CERAMIC DISK 50 C 491 CER04PF 50V C CAPACITOR CERAMIC DISK 50 C 492 SMD473PF 50V CAPACITOR SMD 0805 50V 5 C 493 SMD473PF 50V CAPACITOR SMD 0805 50V 5 C 494 SMD473PF 50V CAPACITOR SMD 0805 50V 5 C 495 SMD473PF 50V CAPACITOR SMD 0805 50V 5 C 496 SMD473PF 50V CAPACITOR SMD 0805 50V 5 D 01 1N5404 DIODE RECTIFIER D 02 1N4004 DIODE RECTIFIER D 05 1N4148 GE...

Page 15: ...BON FILM 1 5 R 41 MET1 5WF24K RESISTOR METAL FILM 1 5W R 42 CAR1 4WJ220 RESISTOR CARBON FILM 1 4 R 43 CAR1 4WJ220 RESISTOR CARBON FILM 1 4 R 44 CAR1 5WJ1K RESISTOR CARBON FILM 1 5 R 45 CAR1 5WJ47 RESISTOR CARBON FILM 1 5 R 46 CAR1 5WJ47 RESISTOR CARBON FILM 1 5 R 47 MET2W10 RESISTOR METAL FILM 2WJ R 54 CAR1 5WJ1K RESISTOR CARBON FILM 1 5 R 55 CAR1 5WJ47 RESISTOR CARBON FILM 1 5 R 56 CAR1 5WJ47 RES...

Page 16: ... 5W R 306 MET1 5WF33K RESISTOR METAL FILM 1 5W R 308 SMD1 5WJ1K RESISTOR SMD 0805 1 5WJ R 309 SMD1 5WF1 3K RESISTOR SMD 0805 1 5WF R 310 SMD1 5WF15K RESISTOR SMD 0805 1 5WF R 311 SMD1 5WF11K RESISTOR SMD 0805 1 5WF R 312 SMD1 5WF30K RESISTOR SMD 0805 1 5WF R 313 SMD1 5WJ1K RESISTOR SMD 0805 1 5WJ R 314 SMD1 5WJ1K RESISTOR SMD 0805 1 5WJ R 315 SMD1 5WJ1K RESISTOR SMD 0805 1 5WJ R 316 SMD1 5WJ20K RE...

Page 17: ...1 5WF1K RESISTOR METAL FILM 1 5W R 449 CAR1 5WJ220 RESISTOR CARBON FILM 1 5 R 450 MET3W0 1 RESISTOR R 451 MET3W0 1 RESISTOR R 452 CAR1 5WJ1 5K RESISTOR CARBON FILM 1 5 R 453 CAR1 5WJ15K RESISTOR CARBON FILM 1 5 R 454 CAR1 5WJ56K RESISTOR CARBON FILM 1 5 R 455 MET1 2WJ4 7 RESISTOR METAL FILM 1 2W R 456 MET2W680 RESISTOR METAL FILM 2WJ R 461 MET1 5W 68K RESISTOR METAL FILM 1 5W R 462 MET1 5WF68K RES...

Page 18: ...KS AX4500 3 9 Packing and accessories Block No M M M 2 Block No M M M 3 P2 P3 P7 P7 P8 P8 P4 P6 A3 A4 A3 A6 A5 A1 A2 A7 A8 P2 P1 P5 ...

Page 19: ...PB 01 1715 0 MA PB 01 4101 0 MO FI 01 8087 0 MA IN 02 8090 0 GIFT BOX CUSHION POLY BAG A POLY BAG D POLY BAG B POLY BAG C PAPER SPACER FLAT PAD 1 2 1 1 1 1 2 2 P 8 LVT0727 001A BT 52004 1 BT 51018 2 BT 54013 1 CHD114 N FUSE20A 32V MO CU 01 4167 0 MNSC 05 2 40 20 BT 51020 2 BT 20071B KSAX4700 SCREW INST BOOK WARRANTY CARD WARRANTY CARD WARRANTY CARD CONNECTOR ASS Y AUTO FUSE RUBBER CUSHION SCREW RE...

Page 20: ...R102A 3 U103 A 3 U104 A 5 U104 B BASS BOOST 50Hz 0 12dB VARIABLE CROSS OVER 80Hz 12dB OCT FIXED LPF OFF HPF Q101 Q111 L IN VR101B 3 U101 B FRONT HI INPUT 6 U102 B VR102B 3 U105 A 3 U106 A 5 U106 B LPF OFF HPF Q201 Q211 R L REAR R IN INPUT AMP POWER AMP REAR R OUT L OUT VR301A 5 U301 A 3 U302 A VR302A 3 U303 A 3 U305 A 5 U305 B BASS BOOST 50Hz 0 12dB VARIABLE CROSS OVER 80Hz 12dB OCT FIXED LPF SW30...

Page 21: ...KS AX4500 2 2 MEMO ...

Page 22: ...470 35V C12 2200 25V RX C18 100 16V C21 10 25V C22 47 25V C63 220 16V C41 100 16V C17 47 16V C64 220 16V C69 3300 35V C70 3300 35V C61 2 2 50V C62 2 2 50V C01 10 16V C19 100 16V P1 TM0006 00 CHASSIS SV01 2K R78 10K 0 5W R77 10K 0 5W R39 68K R47 10 2W R57 10 2W R82 2 2M R36 51K R35 1 2K R70 220 2W R81 10K R80 220K R15 130KF R17 4 7K R18 4 7K R05 10K R04 4 7K R03 4 7K R02 4 7K R16 51KF R20 10K R19 1...

Page 23: ...2 68KF R361 68KF R302 21 5KF R301 22KF R431 5 6KF R350 0 1 3W R321 30K R455 4 7 0 5W R322 30K R453 15K R452 1 5K R447 12KF R448 1KF R436 1K R449 220 R443 47 R332 22KF R446 47 R444 3 9K R434 5 6K R345 2 7K R342 1K R340 22 R341 22 R338 22 R406 33KF R339 22 R337 1K R308 1K R333 1K R335 5 6K R435 5 6K R334 5 6K R344 3 9K R433 1K R346 47 R343 47 R349 220 R336 1K R348 1KF R331 5 6KF R347 12KF R352 1 5K ...

Page 24: ...232 22KF R245 2 7K R109 1 3KF R154 56K R242 1K R240 22 R241 22 R212 56KF R203 22KF R205 33KF R238 22 R210 15KF R239 22 R237 1K R209 1 3KF R208 1K R254 56K R153 15K R155 4 7 0 5W R152 1 5K R147 12KF R131 5 6KF R148 1KF R136 1K R149 220 R143 47 R146 47 R233 1K R144 3 9K R134 5 6K R235 5 6K R135 5 6K R133 1K R108 1K R137 1K R139 22 R206 33KF R138 22 R141 22 R140 22 R142 1K R145 2 7K R234 5 6K R244 3 ...

Page 25: ...432 COMPONENT R436 COMPONENT R431 COMPONENT R231 COMPONENT R152 COMPONENT R241 COMPONENT R234 COMPONENT R344 COMPONENT R345 COMPONENT R343 COMPONENT R247 COMPONENT R146 COMPONENT R37 COMPONENT R36 COMPONENT R45 COMPONENT R35 COMPONENT R347 COMPONENT R348 COMPONENT R332 COMPONENT R461 COMPONENT R462 COMPONENT R248 COMPONENT R242 COMPONENT R137 COMPONENT R232 COMPONENT R82 COMPONENT R132 COMPONENT R...

Page 26: ...NT J93 COMPONENT J88 COMPONENT Q110 COMPONENT Q207 COMPONENT Q111 COMPONENT Q107 COMPONENT COMPONENT Q112 COMPONENT D101 COMPONENT C133 COMPONENT C237 COMPONENT Q209 COMPONENT R251 COMPONENT J92 COMPONENT J91 COMPONENT J90 COMPONENT J107 COMPONENT J106 COMPONENT R249 COMPONENT C238 COMPONENT J94 COMPONENT R247 COMPONENT C236 COMPONENT R244 COMPONENT J104 COMPONENT J87 COMPONENT R150 COMPONENT Q206...

Page 27: ...17 COMPONENT C214 COMPONENT C215 COMPONENT C216 COMPONENT C217 COMPONENT C312 COMPONENT C313 COMPONENT C412 COMPONENT C413 COMPONENT C314 COMPONENT C315 COMPONENT C316 COMPONENT COMPONENT COMPONENT C317 COMPONENT C414 COMPONENT C415 COMPONENT C416 COMPONENT C417 COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONENT COMPONE...