Kenwood RXD-A55 Service Manual Download Page 1

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(XD-A55/A75)

70%

MINI HiFi COMPONENT SYSTEM

RXD-A55/A75

SERVICE MANUAL

Panel ass'y
(A60-2091-08)

Knob(VOLUME)
(K27-2470-08)

Dress ring
(A21-3957-08)

In compliance with Federal Regulations, following are repro-
duction of labels on, or inside the porduct relating to laser prod-
uct safety.

KENWOOD-Crop. certifies this equipment conforms to DHHS
Regulations No.21 CFR 1040. 10, Chapter 1, subchapter J.

DANGER : Laser radiation when open and interlock defeated.
AVOID DIRECT EXPOSURE TO BEAM.

Refer to parts list on page 33.

Panel(CD)
(A60-2090-08)

Front glass

(B10-)

Summary of Contents for RXD-A55

Page 1: ...with Federal Regulations following are repro duction of labels on or inside the porduct relating to laser prod uct safety KENWOOD Crop certifies this equipment conforms to DHHS Regulations No 21 CFR 1040 10 Chapter 1 subchapter J DANGER Laser radiation when open and interlock defeated AVOID DIRECT EXPOSURE TO BEAM Refer to parts list on page 33 Panel CD A60 2090 08 Front glass B10 ...

Page 2: ...TIONS 37 Contents FM Antenna 1 T90 0883 08 AM Loop Antenna 1 T90 0879 08 Remote Control 1 A70 1531 08 AA size battery UM SUM 3 R6 HP 7 or similar 2 Accessories SYSTEM CONFIGURATION Cautions SYSTEM MAIN UNIT DESTINATION SPEAKER XD A55 RXD A55 KP LS N50S XD A75 RXD A75 KP LS N70S CLASS 1 LASERPRODUCT The marking this product has been classified asClass 1 It means that there isno danger of hazardous ...

Page 3: ...NTENNA FM 75Ω AM LOOP R SPEAKERS R L VIDEO AUX L Pin jack E63 1219 08 Pin ass y E40 8933 08 Cabinet TOP A02 3014 08 Lock terminal board E70 0144 08 AC power cord bushing J42 0351 08 AC power cord E30 7222 08 FM Antenna E70 0145 08 ...

Page 4: ...Tray 1 Turn fully the lock lever in the 7 3 arrow direction 2 While holding the lock lever rotate 8 1 the cam gear until the cam gear rib engages with the clamp lever 3 Push the slide holder backward to 8 5 engage the claw with the groove and remove it in the direction of the arrow M1 x6 13 CD Servo PWB 1 Screw N1 x1 8 6 Note 2 2 Hook N2 x2 3 Socket N3 x4 14 CD Mechanism 1 Hook P1 x2 9 1 2 Hook P2...

Page 5: ... G1 x3 ø3x10mm F1 x1 ø3x10mm F2 x1 E3 x1 E4 x1 E2 x2 Main PWB E2 x1 Power Supply PWB Power Supply PWB H1 x9 ø3x10mm H2 x1 J1 x5 ø3x10mm K1 x1 ø3x10mm F3 x1 Display PWB Headphones PWB Open Cassette Holder Tape Mechanism Turntable Disc Tray L2 x1 CD Player Unit L1 x2 1 3 2 M1 x3 M1 x3 N3 x2 N2 x2 N3 x2 CD Servo PWB CD Player Base N1 x1 ø3x8mm ...

Page 6: ...RXD A55 A75 6 DISASSEMBLY FOR REPAIR Figure 9 1 P2 x3 P1 x1 Q1 x5 P1 x1 Loading Motor PWB CD Mechanism ...

Page 7: ...n the direction of the arrow A and remove the pinch roller C1 upwards Note When installing the pinch roller pay attention to the spring mounting position How to remove the belt TAPE 1 See Fig 10 4 1 Remove the main belt D1 x 1 pc from the motor side 2 Remove the FF REW belt D2 x 1 pc How to remove the belt TAPE 2 See Fig 10 4 1 Remove the main belt E1 x 1 pc from the motor side 2 Remove the FF REW...

Page 8: ...sassembly method to remove the CD mechanism How to remove the loading motor See Fig 11 1 1 Bend the hooks A1 x 5 pcs to remove the loading motor Figure 11 1 Note After removing the connector for the optical pickup from the connector wrap the conductive aluminium foil around the front end of connector so as to protect the optical pickup from electrostatic damage A1 x2 A1 x1 Loading Moter CD Base A1...

Page 9: ...AM AM BAND T303 T306 OSC BUFF CF352 T351 CF351 IC302 FM IF DET FM MPX AM IF LA1832S X351 456kHz ZD351 PLL TUNER LC72131 IC303 Q360 CNS11 FROM CD SECTION CNP1 LC75341 IC601 AUDIO PROCESSOR JK601 VIDEO IN M IC101 Q703 Q704 Q705 54PIN IC700 IC700 56PIN 53PIN IC700 55PIN IC700 MOTOR DRIVER TAPE MECHANISM ASSEMBLY SOLM1 SOLM2 SOLENOID MM1 MOTOR TAPE SWM2 T2 PLAY R PLAY SWM4 SWM1 T1 PLAY SWM3 F PLAY AN7...

Page 10: ... 4 5 7 6 18 23 24 40 82 VCC1 VCC2 VCC4 VCC3 1 2 25 17 39 38 42 41 8 14 22 29 35 15 16 27 26 21 5V 1 2 3 4 5 6 AGND R CH DGND L CH 5V 5V DO 4 6 5 DI CLK 3 2 1 CE WRQ DRF 8 9 7 OC DISC NO CLAMP SW CD RES 4 5 6 1 2 3 1 6 2 3 4 5 1 4 6 5 3 2 5V PICK UP UNIT IC1 LC78645E CONTROL SERVO SIGNAL XL1 33 8688MHz Q2 CONSTANT VOLTAGE Q1 LASER DRIVER IC2 M63001FP DRIVER FOCUS TRACKING SPIN SLED M M M1 MOTOR SPI...

Page 11: ...SE DSA ACK TUN SM GND 28 SPEANA 2 I SPEANA DATA INPUT 16kHz 29 SPEANA 1 I SPEANA DATA INPUT 1kHz 30 SPEANA 0 I SPEANA DATA INPUT 63kHz 31 33 KEY2 KEY0 I KEY INPUT 34 AVDD ANALOG POWER SUPPLY 35 AVREF ANALOG REFERENCE VOLTAGE 36 P IN I POWER FAILURE DETECTION 37 38 JOG1 0 I JOG VOLUME INPUT 1 0 39 REMOCON I REMOTE CONTROL SIGNAL INPUT 40 VSS GND 41 SMUTE O SYSTEM MUTE CONTROL 42 T SOL B O DECK2 SOL...

Page 12: ... 4 OUT1 O CH1inverted output 5 OUT1 O CH1 non inverted output 6 OUT2 O CH2 inverted output 7 OUT2 O CH2 non inverted output 8 14 GND GND 15 OUT3 O CH3 non inverted output 16 OUT3 O CH3 inverted output 17 IN3 I CH3 inverted input 18 VCC1 Power supply 1 CH1 CH2 CH3 19 STANDBY I STANDBY signal input 20 VREF CH1 CH4 reference voltage input 21 MUTE I Mute signal input CH6 22 IN5 GND 23 IN5 Connected to...

Page 13: ...y track number can MEMORY key input be appoint directly Tracking OFF play at that specific point MEMORY key input Remote Controller Only DISC 1 key Track 4 Tracking ON play from that DISC 2 key Track 9 specific point DISC 3 key Track 15 MEMORY key input STOP key input STOP explanation a Focus off set FOFF__XX b Tracking off set TOFF__XX STOP key input c Tracking balance TBAL__XX d Tracking Gain TG...

Page 14: ...zed CLEAR ALL TUNER PRESET MEMORY CLOCK INITIAL CLEAR CD MEMORY Initialize the CD changer mecha and compact cassette mecha For CD changer mecha set the CD mecha in upward condition Display key input WAIT display FINISHED display When initialize the mechanism it will display WAIT and will not accept any changes in input After shipping condition setting is ended FINISHED is displayed and any key inp...

Page 15: ... or unit in protect circuit operation DSP Control Error ER AP 10 DSP Control Error general TAPE Mechanism Error ER TA 00 Tape Mechanism Error 01 Initial Error CD VCD Pick Up Mechanism Error ER CD 00 Pick up Mechanism Error 01 PU IN SW Detection NG CD Changer Mechanism Error ER CD 10 Changer Error 11 Initial Error Tray Error ER CD 20 Tray Error Focus Not Match NO DISC Micon Communication Error ER C...

Page 16: ... Antenna Output TP302 2 Input Antenna Output TP301 TUNER SECTION fL Low range frequency fH High renge frequency AM IF 450 kHz 1 720 kHz T351 1 AM Band 530 kHz fL T306 2 Coverage 1 1 0 1 V AM Tracking 990 kHz 990 kHz fL T303 1 1 Input Antenna Output TP301 2 Input Antenna Output Speaker terminal FM RF Signal generator 1 kHz 75 kHz dev FM modulated FM Band 87 50 MHz T301 fL 1 Coverage 1 3 V 50 mV FM ...

Page 17: ...ferent PWBs and pickups can be combined freely Each time a disc is changed these adjustments are performed automatically Therefore playback of each disc can be performed under optimum conditions Items adjusted automatically 1 Offset adjustment The offset voltage between the head amplifier output and the VREF reference voltage is compensated inside the IC Focus offset adjustment Tracking offset adj...

Page 18: ... R45 R46 R15 R48 R43 R47 1 21 42 22 1 80 61 60 41 40 21 20 Q2 Q3 Q1 ZD1 CNP2 CNP5 CD SECTION CNP7 CNP8 CNP3 CNP4 CNP1 D1 D2 CN2 BI1 A C37 C6 C35 C5 C43 C45 R22 C23 C1 ZD2 C18 R7 R44 R9 C3 R10 R32 R38 R34 R36 R18 R29 R28 R33 R35 R31 R37 R2 R5 R1 R4 R6 R3 R19 C24 L1 J1 J2 J4 J5 R20 J16 J18 J19 J20 R21 J27 J31 J34 J35 J38 J39 J40 J41 J42 J43 J45 J46 J47 J48 C9 C10 C39 C40 C41 C11 R30 R49 J49 C14 C16 ...

Page 19: ...708 R563 R564 C717 XL700 VR701 J717 J718 J719 J723 J721 J728 R579 J701 J702 J703 J704 J705 J707 J708 J779 J780 R701 R703 R702 R709 R710 R711 R712 R713 R714 R715 R716 R708 J720 J722 J724 R720 R718 R719 J748 R726 R727 R728 R725 R781 R724 J749 J706 R729 R733 R734 R737 R738 R736 R775 R735 J744 J745 J746 J737 J743 J755 R788 R717 J754 J736 J757 J758 J759 J752 J756 R786 J761 J751 J786 R707 J713 J716 J711...

Page 20: ...9 C855 C852 C856 C602 C606 C619 C629 C630 C621 C620 C622 C623 C625 C626 C624 C613 C614 R855 R856 R852 R853 J858 R866 R867 J604 C850 C860 J855 R382 R392 R391 C394 T303 C380 C391 C396 ZD351 C398 CF351 C352 C362 X351 C364 CF352 T351 CF303 352 C370 C393 X352 L351 C358 C357 C371 C372 C368 C367 T306 VD301 J315 J312 J311 J304 J313 C331 C374 C373 R357 J310 J309 J307 R384 R387 J305 J306 J308 J314 R370 J327...

Page 21: ...00 C921 C922 C915 R917 R918 C901 C902 R943 R941 R942 C946 C905 C956 C957 C919 C920 R954 R953 FH813 FH814 C819 C818 C916 C925 J918 J917 J924 J925 J915 J916 J909 J913 J914 RL801 J938 J923 J930 C958 J919 J941 J940 J939 C904 C903 5A 125V 5A 125V F804 F805 2A 125V F806 F807 2A 125V T801 T801 1 13 E B E B E E E B E B E B B B 1 18 1 5 1 5 1 2 B E 1 6 C811 C812 T802 WHITE BLACK 5A 125V F801 FH801 FH802 C8...

Page 22: ...R355 3 3K R353 270 3 9K C357 2 2u50 9 8 7 C358 1u50 11 10 VCC FM DET STEREO PHASE IF OUT 12 1u50 2 7K C338 1000P C332 5 C365 0 022 C366 1000P C363 0 022 C364 4 7u50 R358 C361 0 022 T306 4 5 1 6 C335 560P 2 C323 0 022 6 1 C334 27P R323 68K R336 10K AM LOW OUT AM RF IN AM OSC IN AM OSC OUT FM AFC VSM 3 9K R370 1K 0 022 21 22 23 24 19 20 C367 2 3 4 C330 15P T303 C331 0 047 C342 0 022 R365 10K C362 3 ...

Page 23: ...C9 1000P CT1 1000P CT2 10u50 C10 0 22u50 C11 100P C12 R13 1K R10 27K TP3 1K R14 1K R15 R16 1K 1K R17 1K R18 100u10 C14 0 022 C13 R20 10K 220 R43 XL1 33 8688MHz 0 82uH L1 R22 100 2 2K R25 10u50 C24 1500P C26 R27 10K 10u50 C23 2 2K R24 1500P C25 10K R26 1000P C44 C49 47u25 1000P C4 C3 47u25 3 3 R9 R42 1 2K 12K R41 0 1 C37 680 R40 2 2u50 C36 R39 680 C35 0 047 R28 2 2K 2 2K R29 71 70 0 022 C27 C34 100...

Page 24: ...470K R949 R950 680 2W R943 220u25 C952 C958 0 1u50 CH2 CH2 CH1 CH1 SUB 5 4 3 2 1 GND B M GND CD B 5V 5 4 3 2 1 GND VH GND 5 4 5 4 VL VL 3 2 1 1 3 2 VH 6 VH VH 7 8 6 7 8 8 7 6 5 4 3 2 1 VL VH VH VH VL GND GND VH M GND GND CD B 5V 4 5 B 2 3 1 VP 5 AC RLY VF2 UN SW 5V P IN 2 4 3 1 VF1 6 1 2 3 4 5 6 4700u35 C904 4700u35 C903 C902 C901 10V 10V 10V C704 47u50 2 2K R785 5 4 3 2 1 JK670 100u50 C921 100u50...

Page 25: ... 47u25 C709 1000P 47K R746 0 01 C711 100P C710 7 6 8 5 C563 2 2u50 100K R569 R566 220K 820K R562 33K R565 270P C562 C561 270P 10K R561 4 1 2 3 R568 220K R572 100K 2 2u50 C564 C565 2700P R570 12K R567 68K 2700P C566 R571 390K 4 R578 100K C570 2 2u50 1 2 3 R576 2 2M 7 5 6 8 6800P C568 6800P R574 1M C567 56K R573 470K R575 0 022 180K 0 022 C571 R580 C569 15K R579 150K R577 270 1 4W R563 R564 270 1 4W...

Page 26: ...2 63 60 47 56 62 41 38 844 6 5 5 5 1 2 FM DM SW4 AN AN AR AS AQx2 AQx2 803 804 858 859 AL AL SCREW AM ø3x8 AN ø2 6x6 AQ ø2x3 AR WASHER AS ø2x5 N09 5335 08 N09 5332 08 N32 2606 46 N30 2003 46 N19 1435 05 N86 2005 46 24 43 35 66 M3 SW1 SW2 SW3 54 32 57 53 39 39 39 39 39 PWB C PWB F PWB B 1 2 3 A B EXPLODED VIEW CD MECHANISM ...

Page 27: ... Kx2 K K K K K K K C B Bx2 B A A A A C Ex2 Ex2 Ex2 L B 674 753 717 656 635 630 734 786 654 752 628 655 649 649 649 629 791 705 747 681 624 643 643 620 639 640 748 706 704 785 751 629 787 630 624 615 780 614 616 675 676 782 610 611 609 608 612 613 642 641 660 607 BM BS2 BS1 601 603 602 643 643 PR1 RPEH PR2 PF A B C N09 5330 08 N09 5331 08 N09 5334 08 3x12 3x10 D E F N09 5335 08 N09 5338 08 N09 5343...

Page 28: ...ew Parts Parts No Description Desti nation Re marks 601 1C A02 3014 08 CABINET TOP GCAB 1195AWSA 602 1C A02 3015 08 CABINET R GITAS0092AWSA 603 1C A02 3016 08 CABINET L GITAS0075AWSA 607 2C A21 3957 08 DRESS RING KNOB HDECQ0703AWSA 608 2C A21 3958 08 CASSETTE LID L GCOVA1365AWSA 609 2C A21 3959 08 CASSETTE LID R GCOVA1366AWSA 610 2C A53 2251 08 CASS HOLDER L GDORF0104AWSA 611 2C A53 2252 08 CASS H...

Page 29: ...e G Germany V China Shanghai Y AAFES Europe X Australia Q Russia H Korea M Other Areas indicates safety critical components Ref No Add ress New Parts Parts No Description Desti nation Re marks C111 114 CC73FCH1H331J CHIP C 330PF J C115 116 CE04KW1E101M ELECTRO 100UF 25WV C117 118 CK73EB1E333K CHIP C 0 033UF K C119 120 CC73FCH1H561J CHIP C 560PF J C121 122 CE04KW1H010M ELECTRO 1 0UF 50WV C123 124 C...

Page 30: ... geliefert 6 L Scandinavia K USA P Canada R Mexico C China I Malaysia Y PX Far East Hawaii T England E Europe G Germany V China Shanghai Y AAFES Europe X Australia Q Russia H Korea M Other Areas indicates safety critical components Ref No Add ress New Parts Parts No Description Desti nation Re marks C708 CE04KW1E470M ELECTRO 47UF 25WV C709 CK73EB1H102K CHIP C 1000PF K C710 CC73ECH1H101J CHIP C 100...

Page 31: ... safety critical components Ref No Add ress New Parts Parts No Description Desti nation Re marks L700 L90 0388 08 COIL VP DH101K0000T L901 L39 1342 08 COIL RCILZ0137AFZZ L902 L39 1342 08 COIL RCILZ0137AFZZ T301 L33 1634 08 CHOKE COIL RCILB0065AWZZ T302 L31 0662 08 FM RF COIL RCILI0017AWZZ T303 L31 0661 08 FM RF COIL RCILA0052AWZZ T306 L32 1039 08 OSC COIL AM RCILB0067AWZZ T351 L30 0985 08 IFT COIL...

Page 32: ...urope X Australia Q Russia H Korea M Other Areas indicates safety critical components Ref No Add ress New Parts Parts No Description Desti nation Re marks R611 612 RK73EB2B332J CHIP R 3 3K J 1 8W R613 614 RK73EB2B331J CHIP R 330 J 1 8W R615 616 RK73EB2B222J CHIP R 2 2K J 1 8W R617 618 RK73EB2B103J CHIP R 10K J 1 8W R619 620 RK73EB2B223J CHIP R 22K J 1 8W R621 622 RK73EB2B222J CHIP R 2 2K J 1 8W R6...

Page 33: ...TRANSISTOR VSKRC102M 1T Q703 KTA1273Y TRANSISTOR VSKTA1273Y 1T Q704 705 KTA1271Y TRANSISTOR VSKTA1271Y 1T Q706 708 KTC3199GR TRANSISTOR VSKTC3199GR 1T Q709 RC102M TRANSISTOT VSKRC102M 1T Q801 AN78L05 IC VOLTAGE REGULATOR 5V 1T Q802 KTC3199GR TRANSISTOR VSKTC3199GR 1T Q803 KTA1274Y TRANSISTOR VSKTA1274Y 1T Q850 KTC2026 TRANSISTOR VSKTC2026 1 Q851 KIA7810AP IC VHIKIA7810AP1 Q852 KIA7805AP MOS IC VHI...

Page 34: ...g head 1 Erasing head 1 Fast winding time Approx 100 seconds C 60 tape CD player section Laser wave length 770 to 795 nm Laser power class 1 FDA Wow Flutter Less than unmeasurable Limit General Power consumption 130W Dimensions W 270 mm 10 5 8 H 330 mm 13 D 390 mm 15 3 8 Weight net 7 9 kg 17 4 lb Speakers LS N50S Enclosure Bass reflex type Speaker configuration Woofer 160 mm cone type Tweeter 50 m...

Page 35: ...alaysia KENWOOD ELECTRONICS THAILAND CO LTD 2019 New Pechburi Road Bangkapi Huaykwang Bangkok 10320 Thailand Note Component and circuit are subject to modification to insure best operation under differing local conditions This manual is based on Europe E standard and provides information on regional circuit modification through use of alternate schematic diagrams and information on regional compon...

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