JVC KS-FX722R Service Manual Download Page 2

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KS-FX722R

1-3

Location of main parts

Control unit

Display

Control unit

Main unit

Main board

Main board assembly

Power IC

Connector to controller

Tuner
pack

Antenna
jack

RCA jack

Changer control
connector

I/O connector

Cassette mechanism

C.motor assembly

Mechanism control board assembly

Cassette housing

Head

Head relay board

Mechanism control board assembly

Flywheel assembly

Reel board

Capstan motor assembly

Summary of Contents for KS-FX722R

Page 1: ...NY OF JAPAN LTD KS FX722R KS FX722R Area Suffix E Continental Europe Contents Safety precaution Location of main parts Disassembly method 1 2 1 3 1 4 Adjustment method Wiring connections Description of major ICs 1 10 1 14 1 15 MO TP TP RDS RDS PTY PTY DISP DISP 8 9 10 11 12 7 DAB ...

Page 2: ...ssembly Power IC Connector to controller Tuner pack Antenna jack RCA jack Changer control connector I O connector Cassette mechanism C motor assembly Mechanism control board assembly Cassette housing Head Head relay board Mechanism control board assembly Flywheel assembly Reel board Capstan motor assembly ...

Page 3: ... C B assembly 3 Lift up the main P C B assembly to remove it At this time remove the connector CP501 connecting the main P C B assembly and mechanism assembly 5 Removing the rear panel see Fig 2 5 Remove six screws retaining the jacks or the like Remove one screw 5 to the IC bracket Remove one screw 6 to remove the line out jack Remove one screw 7 to remove the antenna jack Remove one screw 8 to r...

Page 4: ... conditions Amplifier section Power supply voltage DC14 4V 10 5 16V Load impedance 4 2Speakers connection Line out 20k Standard volume position Balance and Bass Treble volume Fader Center Indication 0 Loudness Dolby NR Sound Cruise Off Volume position is about 2V at speaker output with following conditions Playback the test tape VT721 AM mode 999kHz 62dB INT 400Hz 30 modulation signal on recieving...

Page 5: ...rd EXTKSRT002 18P 18 pin extension cord For connection between mechanism assembly and main board assembly Check for mechanism driving section such as motor etc Disassembly method 1 Remove the bottom cover 2 Remove the front panel assembly 3 Remove the top cover 4 Install the front panel 5 Confirm that current is being carried by connecting an extension cord jig Note Available to connect to the CP7...

Page 6: ...d Control board Flat cablle Head relay board Playback head 0 9 0 9 1 3 4 2 0 9 1 3 4 2 0 9 CN403 CN401 CN402 CP501 CJ701 CP701 Changer connector Wiring connections Color codes are shown below 1 2 3 4 5 6 7 8 9 0 D C Brown Red Orange Yellow Green Blue Violet Gray White Black Pink Light Blue ...

Page 7: ...0 MOTOR O Main motor output H At rotation 41 FF REW O MS IC sensitivity switch output L FF REW 42 F R O FWD REV change input H FWD L REV 43 DOLBY O Dolby NR output H Dolby NR ON 44 MS IN I Between tunes signal input H Between tunes 45 I2CSCK I O E VOL IC control clock I O 46 I2CDAO O E VOL IC control data output 47 I2CDAI I E VOL IC control data input 48 REEL I Reel rotation detect signal input 49...

Page 8: ...N2 GND DIREF LINEOUT2 NC NC MSSW PBTC1 PBOUT1 OUTREF1 TAPEIN1 NC NC LINEOUT1 NC NC MSLPF 31 32 33 34 35 36 37 38 39 40 20 19 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 9 10 30 29 28 27 26 25 24 23 22 21 7k 12k 7k 12k 300k 70 120 70 120 100k 100k 24dB MS MODE BIAS MUTE TAPE EQ FWD RVS LPF DET 24dB T2 X1 X1 F2 30k 30k 45k F1 300k T1 F3 Vcc MS ON OFF CXA2559Q IC401 Playback equalizer amplifier with musi...

Page 9: ...l Head change control terminal Detection mode control terminal between tunes Detection function control terminal between tunes Non connection Non connection Line out output terminal Resistance connection terminal for standard current setting Earth terminal Tape input terminal Output standard terminal Reproduction equalizer output terminal Terminal of capacity of reproduction equalizer Reproduction...

Page 10: ...p 1 Pin layout 2 Block diagram IN1 IN2 IN3 IN4 STBY 2 1 11 13 23 10 TAB PROTECTOR ASO SURGE TSD INPUTBUFFER1 INPUTBUFFER2 INPUTBUFFER3 INPUTBUFFER4 AMP1 AMP2 AMP3 AMP4 MUTE PVCC1 PVCC2 INVCC 12 22 14 18 6 3 4 5 7 8 9 15 16 17 19 20 21 1 23 ...

Page 11: ...input Common driver output pins The frame frequency is given by t0 fosc 384 Hz Power supply connection Provide a voltage of between 4 5 and 6 0V Display turning off input pin INT L Vss off S1 to S52 COM1 to COM3 L INT H VDD on Serial data can be transferred in display off mode Used for applying the LCD drive 2 3 bias voltage externally Must be connected to VDD2 when a 1 2 bias drive scheme is used...

Page 12: ...END STANDBY SEEK STOP SD ST SMETER JBUS SI JBUS SO JBUS I O JBUS SCK SCK SI SO CD RCH CD LCH TUNER L R OUT LR OUT RR OUT LF OUT RF L R F L R R LRO RRO CP501 J751 CP961 J931 KEY 0 2 CJ701 S3 S52 COM0 COM3 CP701 TAPE L R F R MODE STANDBY FF REW MOTOR SUBMO TAPE IN DOLBY MS REEL SUBMO SUBMO LCH RCH METAL DOLBY CE CLOCK DATA F R MS OUT LCH RCH FF REW MOTOR TAPE IN MODE STANDBY REEL PHOTO CJ401 CJ403 C...

Page 13: ...50 33 0 012 0 056 2SC3661 X 2SC3661 X 0 1 10K DTC114EKA X 1 50 2SC2412K R X 10K 1k 100 2SC2412K R X 100 6 3 2 2 50 2SB1322 RS T 10k 47K 47k 1 50 1 50 10K 10K 1SS355 X 2SC2412K R X 0 01 560P 47p 82p 0 1 50 2 2 50 1k DTA114EKA X 1 50 1 50 HA13158A 47K DTC114EKA X 2 2k 2 2k 1K DTC114EKA X 2SD601A R X 2SD601A R X 2SA1037AK RS X UPD17801BAGC584IC 47K 10K 10 16 DTC114EKA X QNZ0095 001 270 270 270 270 MA...

Page 14: ... C407 C417 R422 R423 D402 R403 R425 C423 R424 R412 R417 R402 C401 C405 C408 R420 0 015 22 16 0 015 910K 0 1 DTC114EKA X 2SB1322 RS T QGF1219F1 11 LB1641 0 01 0 1 QGB1214K1 18S 390 15K 0 1 0 1 0 01 0 1 MA3047 H X 33K 12K 22 16 24K 0 47 50 220P 24K 3 9K 100P 0 01 22K 180 180 100K 100P 100K 100P 100P 12K 33K 18K 100P 0 1 DTC114EKA X 3 3K 47K DSK10C T1 100K 33 10 16 3 3K 100 10K 100K 100P 100P 100P 3 ...

Page 15: ...AM FM 1 2K RPM6938 SV4 560 820 560 820 1 2K 5 11 QLDO158 001 3 9K VMC0335 001 MA152WA TX 4 10 2 8 560 EJECT 3 9 1 8K 2 7K 1 8K 3 9K 2 7K 1 8K 2 7K 820 100 QSW0793 001 180K 270 MA3062 820 390 4 7 6 3 470 QLL0033 003 10K 680 470 270 270 820 1k 10K 10K 10K QLL0033 003 OSC CE INH DATA CLOCK S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18 S17 COM3 COM2 COM1 S52 S51 S50 S49 KEY1 R5V CE CLOCK...

Page 16: ...01 R117 R216 R217 C980 C707 C708 R749 C709 Q13 R771 B773 R773 R32 R981 R979 D738 D741 C28 C29 C30 C2 L2 R34 R969 B779 Q891 B742 B703 B741 B702 B708 B772 B774 R961 B749 B712 B711 B743 B751 B717 B716 B770 B723 B727 R960 B722 B706 B771 B707 B740 B744 B746 B745 C705 B728 C968 C31 Q967 B766 B714 B713 R308 B721 B719 B754 Q303 B776 B755 B777 D742 B758 C713 C254 C154 D965 D892 C710 R301 R303 R305 R302 R30...

Page 17: ...A B C 1 2 3 4 5 KS FX722R 2 7 CA IN Main Main Sub Sub CrO2 S T B Y 3 MODE M J CA IN Main Sub MODE Pho Tr CrO2 Main Sub St BY D Gnd Anode Mecah control board Reel board ...

Page 18: ...lock No M M M 1 A B a C 7 3 11 11 2 6 5 9 4 11 11 6 6 15 6 10 17 14 20 46 14 12 12 49 8 21 48 47 52 13 13 50 50 51 16 18 19 39 35 32 33 26 22 23 30 24 27 28 31 36 37 25 34 39 39 1 41 43 40 44 42 39 45 38 29 Front board Mecha control board Main board 1 1 LCD1 1 2 1 3 ...

Page 19: ... 1 17 FSKW4005 003 TORSION SPRING 1 18 FSXP3026 002 RLS KNOB 1 19 FSKW3002 004 COMP SPRING 1 20 FSYH4036 069 SHEET 2 PRESET BUTTON 21 FSKL4018 00B IC BRACKET 1 22 GE10001 001A FRONT PANLL 1 23 GE30101 005A FINDER ASSY 1 24 FSJK3014 001 LIGHT LENS 1 25 GE20104 001B PRESET BUTTON 1 1 6 26 GE30105 002A POWER BUTTON 1 27 GE30109 002A EJECT BUTTON 1 28 GE20110 001C D FUNC BUTTON 1 TAPE TUNER CD CH 29 G...

Page 20: ...sembly Q ty Description Block No M1MM 46 VMA4652 001SS EARTH PLATE 1 47 GE40103 001A REG BRACKET 1 48 GE40104 002B HEAT SINK 1 49 FSKM3012 011 REAR BRACKET 1 WITH 10A LABEL 50 QYSDST2606Z SCREW 3 51 QYSDSF3006Z SCREW 1 PIN 52 QMFZ047 100 T FUSE A 1 LCD 1 QLD0158 001 LCD 1 ...

Page 21: ...TOR C 702 NDC31HJ 270X C CAPACITOR C 703 NCB31EK 104X C CAPACITOR C 704 NCB31EK 104X C CAPACITOR C 705 NCB31HK 102X C CAPACITOR C 707 NCB31EK 104X C CAPACITOR C 708 QERF1AM 227Z E CAPACITOR 220MF 20 10V C 709 QERF0JM 107Z E CAPACITOR 100MF 20 6 3V C 711 NCB31AK 224X C CAPACITOR C 712 NCB31EK 104X C CAPACITOR C 713 NCS31HJ 121X C CAPACITOR C 751 NCB31EK 104X C CAPACITOR C 761 NCB31EK 223X C CAPACIT...

Page 22: ... R 115 NRS181J 334X MG RESISTOR R 116 NRS181J 102X MG RESISTOR R 131 NRSA02J 222X MG RESISTOR R 132 NRSA63J 222X MG RESISTOR R 133 NRS181J 101X MG RESISTOR R 134 NRSA02J 102X MG RESISTOR R 135 NRSA63J 101X MG RESISTOR R 136 NRSA63J 102X MG RESISTOR R 141 NRSA63J 153X MG RESISTOR R 142 NRSA63J 153X MG RESISTOR R 143 NRSA63J 393X MG RESISTOR R 144 NRSA63J 393X MG RESISTOR R 151 NRSA63J 103X MG RESIS...

Page 23: ...22 001 TUNER X 701 QAX0406 001Z CRYSTAL X 761 QAX0263 001Z CRYSTAL Item Parts number Parts name Area Electrical parts list Mecha control board Remarks Block No 02 A C 401 NDC31HJ 101X C CAPACITOR C 402 NDC31HJ 101X C CAPACITOR C 403 NDC31HJ 101X C CAPACITOR C 404 NDC31HJ 101X C CAPACITOR C 405 NDC31HJ 101X C CAPACITOR C 406 NDC31HJ 101X C CAPACITOR C 407 NDC31HJ 101X C CAPACITOR C 408 NDC31HJ 101X...

Page 24: ... NRSA63J 561X MG RESISTOR R 608 NRSA63J 821X MG RESISTOR R 609 NRSA63J 122X MG RESISTOR R 610 NRSA63J 182X MG RESISTOR R 611 NRSA63J 272X MG RESISTOR R 612 NRSA63J 392X MG RESISTOR R 613 NRSA63J 561X MG RESISTOR R 614 NRSA63J 821X MG RESISTOR R 615 NRSA63J 122X MG RESISTOR R 616 NRSA63J 182X MG RESISTOR R 617 NRSA63J 272X MG RESISTOR R 631 NRSA63J 821X MG RESISTOR R 633 NRSA02J 391X MG RESISTOR R ...

Page 25: ...KS FX722R 3 14 Packing materials and accessories parts list Block No M M M 3 Block No M M M 4 A1 P1 P4 A13 KIT A7 A11 P6 P7 A16 A2 A6 P1 P5 P2 A12 P3 A15 A14 P5 ...

Page 26: ...1A INSTRUCTIONS 1 A 2 GET0010 002A INSTRUCTIONS 1 A 3 GET0010 003A INSTALL MANUAL 1 GET0010 004A INSTALL MANUAL 1 GET0010 005A INSTALL MANUAL 1 A 4 BT 54013 1 WARRANTY CARD 1 A 5 VND3046 001 SERIAL TICKET 1 A 6 VND3050 002 IDENTITY CARD 1 A 7 VKH4871 001SS MOUNT BOLT 1 A 8 VKZ4328 001 LOCK NUT 1 FOR M5 A 9 WNS5000Z WASHER 1 A 10 FSKL4010 002 HOOK 2 A 11 VKZ4027 202 PLUG NUT 1 A 12 FSKM2004 202 MOU...

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