Kenwood KAC-X522 Service Manual Download Page 1

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Heat sink
(F01-3533-01)

Screw washer
(N07-0003-08)

Screw washer
(N09-4214-08)

Fuse (30A)
(F52-0015-05)

Cover
(F07-1177-02)

Screw & Wrench key set
(N99-1770-15)

Screw set
(N99-1577-15)

Accessory
(W01-1606-05)

Dressing panel
(A21-6505-02)

VOLT

FAN

CURR

TEMP

4 5 6 7

POWER IN

RESET

LINE IN

LINE OUT

REMOTE

TO H/U

ID NUMBER

FUSE(30A

Panel
(A64-3924-02)

POWER AMPLIFIER

KAC-X522

SERVICE MANUAL

Summary of Contents for KAC-X522

Page 1: ...w Wrench key set N99 1770 15 Screw set N99 1577 15 Accessory W01 1606 05 Dressing panel A21 6505 02 VOLT FAN CURR TEMP MENU 0 1 2 3 4 5 6 7 8 9 POWER IN RESET LINE IN LINE OUT REMOTE TO H U ID NUMBER 30 30 FUSE 30A 2 Panel A64 3924 02 2006 1 PRINTED IN JAPAN B53 0374 00 N 589 POWER AMPLIFIER KAC X522 SERVICE MANUAL ...

Page 2: ...C PROT PREAMPLIFIER UNIT X08 4150 11 Ref No Application Function Operation Condition Compatibility IC1 Infrasonic filter Controlled by microprocessor IC3 Tone and volume variable IC4 6dB voltage amplification IC5 HPF LPF IC6 Lch 6dB voltage amplification Rch Signal 180 reverse and 6dB voltage amplification IC7 LCD driver Controlled by microprocessor AUDIO UNIT X09 5760 11 Ref No Application Functi...

Page 3: ...01 102 Mute Q103 112 A class first stage amplifier Q113 118 A class 2nd stage amplifier Q119 120 Final temperature compensation Q121 124 Amplifier current detection Q125 132 Final driver Q133 140 Final Q141 Mute control Q142 145 Amplifier limiter Q146 147 Amplifier current detection Q148 149 DC detection Q301 307 Head unit communication output driver Q313 Head unit communication output driver Q314...

Page 4: ...C communication MICROPROCESSOR X09 IC6 Block Diagram Terminal Function Pin No Pin Name I O Function Processing Operation Description 1 3 TEMP4 TEMP6 I Temperature detection 4 6 4 AVSS GND 5 L CE O CE output to LCD driver H LCD driver CE 6 LX REQ S O Data transmit request to head unit H OFF L ON 7 AVREF1 DA reference voltage 8 L DATA L I Data input from LCD driver 9 L DATA A O Data output to LCD dr...

Page 5: ... 46 COMM SW O Communication IC power switch H ON L OFF 47 50 NC Not used 51 D PWER O D class amplifier power supply control H ON L OFF 2ch 4ch L fixed 52 DC DET I Speaker output DC voltage detection H Normal L Abnormal 53 NC Not used 54 POWER ON O Amplifier power supply control H ON D AB class L OFF 55 5VSW O 5VSW H OFF L ON 56 MUTE1 O Amplifier section input stage mute control H OFF L ON 57 MUTE2...

Page 6: ...U voltage detection for display 78 80 TEMP1 TEMP3 I Temperature detection 1 3 MICROCOMPUTER STERMINAL DESCRIPTION 2 AMP ID AMP ID is checked only once at the time reset is released or when the microcomputer is released from the low consump tion mode When setting AMP ID to 8 or 9 remote control is impossible AMP ID DIP SW1 DIP SW2 DIP SW3 DIP SW4 pin 25 pin 26 pin 27 pin 28 0 High High High High 1 ...

Page 7: ...168 R ADJUSTMENT Current detection circuit Amplify and rectify potential differences at two points in the primary side current circuit and send it to the AD port of the MPU and obtain data for displaying current value Constant current output circuit Remove troubles caused by the potential differences between the constant current output and the GND so that the GND po tential differences between the...

Page 8: ...4 C65 R8 R7 C12 R63 R64 C66 R65 C63 R39 R40 C5 R5 C64 R66 C6 R6 R3 R4 C11 C107 1 22 7 8 1 14 1 7 14 8 1 4 8 5 1 4 8 5 64 16 1 49 33 48 17 32 1 10 20 11 1 1 1 1 200Hz 50Hz 1 3 5V 200mV 1 24 50Hz 1 2 200Hz R13 R116 C105 C61 C9 C10 C15 C16 C17 C18 C19 C20 C25 C26 C31 C32 C39 C67 C68 R117 LOW PASS ST MONO OFF ON ON OFF LPF OFF INPUT SENS HPF HI PASS ANP CONT I S F 503C 503C 103A VR1 VR3 VR2 CN1 D1 D2 ...

Page 9: ...6 TP59 TP60 TP61 TP62 TP63 TP64 TP65 TP66 TP67 TP68 TP69 TP70 TP71 TP72 TP73 TP74 TP75 TP76 TP78 TP88 TP89 TP90 TP91 TP92 TP93 TP94 TP98 TP99 TP100 TP101 TP102 TP103 TP104 TP105 TP106 TP107 TP108 TP109 TP110 TP111 TP112 TP113 TP114 TP115 TP116 TP117 TP118 TP119 TP120 TP121 TP122 TP123 TP124 TP125 TP126 TP127 TP128 TP129 TP130 TP132 TP180 TP181 TP182 TP189 TP186 TP188 TP185 TP184 TP187 TP192 TP193 ...

Page 10: ... C118 C119 C120 C121 C122 C123 C124 C129 C130 C131 C132 C133 C135 C141 R1 R2 R119 R120 R121 R122 R123 R124 R125 R126 R127 R128 R129 R130 R131 R132 R133 R134 R135 R136 R137 R138 R145 R146 R151 R152 R153 Lch R154 R155 R157 R158 R159 R160 R161 R163 R165 R166 R167 R168 R169 R171 R173 R201 R202 R301 R302 R318 R319 R320 R321 R322 R334 R335 R345 W404 W58 W62 W61 W60 W59 W165 W257 W254 21 1 22 2 W213 W212...

Page 11: ...G D S G D S G D S G D S E B D306 D307 D308 D310 D313 D314 Q53 Q54 Q65 Q148 Q149 Q341 Q342 Q343 Q344 D13 D81 33 D309 Q51 Q52 Q63 Q91 Q92 Q301 Q302 Q303 Q304 Q305 Q306 Q307 Q313 Q314 Q62 Q64 Q61 D51 D52 D60 J2 Q55 Q56 Q57 Q58 Q59 Q60 D251 D68 D69 D114 D116 D118 Q81 Q120 Q122 Q124 Q130 Q132 34 Q138 Q140 P1 CN1 CN2 CN9 IC9 IC2 X09 B 2 X09 5760 11 Ref No Address IC1 6L IC2 5R IC3 6L IC5 5M IC6 5M IC7 5...

Page 12: ... 341 344 357 D319 H U COMMUNICATION DATA COMMUNICATION VOLTAGE LIMITER MUTE MAIN AMP ISO R312 1 5K R310 12K 22P C311 11 5 10 10u35 0 01 10K R306 C301 10u25 R302 270 3 6 RX SX 2 1 SY VCC 7 8 GND TX 4 TY RY 5 10u35 C349 2 2u50 R174 33K C138 R301 270 R348 1 8K R349 1 8K R311 R313 1 5K 20K R347 100K R334 47 R315 R317 12K 1 5K R314 R308 47 R316 20K 1 5K R99 4 7K C350 R350 10K R100 4 7K 4 7K R102 R101 4...

Page 13: ...59 0 01 R476 5 6K R475 5 6K 100 R151 C129 470P C131 470P R157 R360 56K C352 10u35 R354 10 R356 TH1 TH2 TH3 TH4 14 15 16 11 12 13 8 9 10 5 6 7 1 2 3 4 R92 10K C67 10u35 0 01 C62 C66 0 01 C64 47u25 R93 11K C65 0 01 C63 47u25 C308 10u35 7 R440 10K 8 R353 560 10 C71 0 1 C69 C70 47u25 47K R80 R77 510 1u50 R69 10K R66 R70 100 10 R65 10 C61 10u35 R67 820 R89 10 C89 1 2W 1500P R88 10 C72 1500P 1 2W R331 2...

Page 14: ...MBER E2PROM NOT USED C351 47u25 C69 510 1u50 C74 220u16 C76 10u35 R84 1 5K W405 W404 W403 W402 1 2W 0 047 1 2W C146 0 047 C145 C51 W401 2 10u25 1 Rch Rch Lch 1 2 3 Lch P CON GND BATT 4 5 6 7 R60 10 R58 56 R61 4 7K R62 4 7K R59 10 R57 56 C52 47u25 R54 15K C53 1000P R53 6 8K C54 14 3 OUTCTRL GND 8 VCC 7 6 5 4 RT CT DTC FBACK E2 E1 9 C2 VCC REF 10 11 12 13 2 1 IN1 IN1 47u25 IN2 IN2 15 16 1 5K R56 1 5...

Page 15: ...1 TP92 TP128 TP74 R6 22K 5 6 7 R66 39K 10 9 TP28 C68 8 TP32 TP65 TP66 TP37 TP25 TP20 R1 47K 4 5 6 ST MONO 3 2 1 7 8 R2 C4 0 22 47K 0 22 C3 R5 TP31 0 22 0 22 C6 0 22 R4 130K TP23 TP183 C64 0 22 0 22 TP29 22K C5 2 3 0 22 1 4 C63 56K C66 R64 TP75 R8 47K 7 1 2 TP180 C65 12 13 11 5 4 C67 14 TP76 TP30 TP181 HI P TP64 I F S ON OFF 8 3 C20 47K R24 6 R23 47K R2 9 1 VR1 0 1 R44 2 2K C19 TP62 R42 15K R41 15K...

Page 16: ... 8 R21 10K R9 47K TP192 TP43 TP39 TP38 R14 100 R16 100 R15 100 TP40 TP59 OFF ON B M S TP115 S13 TP114 S14 TP113 S15 TP112 S16 TP111 S17 TP110 S18 TP109 S19 TP108 S20 TP107 S21 S12 TP127 0 1 C73 0 15 C74 TP182 TP189 0 01 C28 0 01 C27 C75 0 033 47K R52 0 01 C49 0 01 C48 0 01 C38 0 01 C37 1K R17 0 1 C22 0 22 C24 47K R31 1K R18 C45 0 01 C44 0 01 C43 0 01 C42 0 01 C41 0 01 C40 0 01 C16 R10 47K R22 10K ...

Page 17: ...x6 BLK φ3x8 BLK φ3x8 φ3x16 φ3x14 φ2x8 φ3x12 N09 6216 05 N09 6218 05 N09 6220 05 N15 1040 48 N80 2008 43 N80 3010 43 N82 2006 48 N84 2606 48 N89 3006 43 N89 3008 43 N89 3008 48 N89 3016 48 N09 6217 05 N80 2008 48 N83 3012 48 26 27 28 Mx2 Hx2 Cx2 Qx2 Gx3 4 5 1 13 14 6 8 719 H L L L L H 723 722 715 F F Ax3 Kx3 715 730 G G P P P L L L 731 Insulated sheet is contained in transistor 24 ED1 Ax3 L Nx8 Nx1...

Page 18: ...1UF 50WV C11 13 CK73GB1H103K CHIP C 0 010UF K C15 20 CD04AS1V100M ELECTRO 10UF 35WV C21 22 CK73GB1H104K CHIP C 0 10UF K C23 24 CK73FB1H224K CHIP C 0 22UF K C25 26 CD04AS1V100M ELECTRO 10UF 35WV C27 28 CK73GB1H103K CHIP C 0 010UF K C29 30 CK73GB1H102K CHIP C 1000PF K C31 32 CD04AS1V100M ELECTRO 10UF 35WV C33 CK73GB1H104K CHIP C 0 10UF K C34 CK73FB1E154K CHIP C 0 15UF K C35 CK73GB1H223K CHIP C 0 022...

Page 19: ...4K CHIP C 0 10UF K C72 CQ93FMG1H152J MYLAR 1500PF J C73 CQ93FMG1H182J MYLAR 1800PF J C74 CD04BJ1E221M ELECTRO 220UF 25WV C76 CD04BJ1V100M ELECTRO 10UF 35WV C89 CQ93FMG1H152J MYLAR 1500PF J C90 91 C90 5690 05 ELECTRO 4700UF 56WV C97 98 CK73GB1H221K CHIP C 220PF K C99 100 CC73GCH1H220J CHIP C 22PF J C101 102 CD04BJ1H220M ELECTRO 22UF 50WV C103 104 CK45FB1H471K CERAMIC 470PF K C105 106 CK73GB1H472K C...

Page 20: ...K J 1 10W R111 112 RK73GB2A101J CHIP R 100 J 1 10W R113 114 RK73GB2A473J CHIP R 47K J 1 10W R115 116 RK73GB2A272J CHIP R 2 7K J 1 10W R117 118 RK73GB2A242J CHIP R 2 4K J 1 10W R119 120 RD14BB2C102J RD 1 0K J 1 6W R121 124 RD14BB2C221J RD 220 J 1 6W R125 128 RD14BB2C682J RD 6 8K J 1 6W R129 130 RD14BB2C151J RD 150 J 1 6W R131 132 RD14BB2C333J RD 33K J 1 6W R133 134 RD14BB2C182J RD 1 8K J 1 6W R135 ...

Page 21: ...73GB2A272J CHIP R 2 7K J 1 10W R450 453 RK73GB2A102J CHIP R 1 0K J 1 10W R454 455 RK73GB2A101J CHIP R 100 J 1 10W R458 460 RK73GB2A101J CHIP R 100 J 1 10W R475 476 RK73GB2A562J CHIP R 5 6K J 1 10W R477 478 RK73GB2A133J CHIP R 13K J 1 10W R479 480 RK73GB2A103J CHIP R 10K J 1 10W VR1 2 R32 0294 05 SEMI FIXED VARIABLE RESISTOR W501 511 RK73EB2E000J CHIP R 0 0 J 1 4W W513 532 RK73EB2E000J CHIP R 0 0 J...

Page 22: ... 2SA965 F TRANSISTOR Q133 136 2SC3856NF TRANSISTOR Q137 140 2SA1492NF TRANSISTOR Q141 DTA124EUA DIGITAL TRANSISTOR Q142 2SA1576A TRANSISTOR Q143 144 2SC4081 TRANSISTOR Q145 2SA1576A TRANSISTOR Q146 2SC1845 A F E TRANSISTOR Q147 2SA992 A F E TRANSISTOR Q148 149 2SC4081 TRANSISTOR Q301 2SC4081 TRANSISTOR Q302 303 2SA1576A TRANSISTOR Q304 2SC4081 TRANSISTOR Q305 306 2SA1576A TRANSISTOR Q307 DTC114EUA...

Page 23: ...330 470 750 Tolerance More than 10pF Code C D G J K M X Z P No code 0 25 0 5 2 5 10 20 40 80 100 More than 10µF 10 50 20 20 0 Less than 4 7µF 10 75 Voltage rating 2nd word A B C D E F G H J K V 1st word 0 1 0 1 25 1 6 2 0 2 5 3 15 4 0 5 0 6 3 8 0 1 10 12 5 16 20 25 31 5 40 50 63 80 35 2 100 125 160 200 250 315 400 500 630 800 3 1000 1250 1600 2000 2500 2150 4000 5000 6300 8000 CHIP CAPACITORS EX C...

Page 24: ...t 50 200Hz variable High Pass Filter Frequency 12dB oct 50 200Hz variable Infrasonic Filter Frequency 24dB oct 15Hz Frequency Response 0 3dB 5Hz 70kHz Signal to Noise Ratio 105dB Amplifier Control Section EQ Bass Frequency 60 80 100 200Hz Bass Level 15dB 15dB Bass Q Factor 1 00 1 25 1 50 2 00 Treble Frequency 10 12 15 17kHz Treble Level 15dB 15dB Installation General Operating Voltage 14 4V 11 16V...

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