Related Manuals for JVC KS-FX722R
Summary of Contents for JVC KS-FX722R
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Page 1: Table Of Contents
KS-FX722R SERVICE MANUAL CASSETTE RECEIVER KS-FX722R DISP DISP Area Suffix E ---- Continental Europe Contents Safety precaution Adjustment method 1-10 Location of main parts Wiring connections 1-14 Disassembly method Description of major ICs 1-15 No.49591 COPYRIGHT 2001 VICTOR COMPANY OF JAPAN, LTD. -
Page 2: Location Of Main Parts
KS-FX722R Location of main parts Control unit Display Control unit Main unit Changer control RCA jack connector Antenna I/O connector jack Main board Tuner pack Power IC Main board assembly Connector to controller Cassette mechanism Mechanism control board assembly C.motor assembly... -
Page 3: Disassembly Method
KS-FX722R Disassembly method Removal of main parts Enclosuer section (1) Detaching the front panel unit (see Fig.2-1) Top side Side the Release slide knob in the direction of arrow to detach the front panel unit. (2) Removing the front chassis(see Fig.2-2) -
Page 4: Adjustment Method
KS-FX722R Adjustment method Test instruments reqired for adjustment Standard volume position 1. Digital osclloscope(100MHz) Balance and Bass,Treble volume .Fader 2. Frequency Counter meter :Center(Indication"0") 3. Electric voltmeter Loudness,Dolby NR,Sound,Cruise:Off 4. Wow & flutter meter Volume position is about 2V at speaker output with 5. - Page 5 KS-FX722R Information f or using a car audio service jig 1. We're advancing efforts to make our extension cords common for all car audio products. Please use this type of extension cord as follows. 2. As a U-shape type top cover is employed, this type of extension cord is needed to check operation of the mechanism assembly after disassembly.
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Page 6: Wiring Connections
KS-FX722R Wiring connections Mecha control board Reel board Flat cablle CN402 Playback head Reel motor Sub motor Head relay board Changer connector CP501 Main board Color codes are shown below. Brown Orange CJ701 Yellow Green Blue Violet Control board Gray... -
Page 7: Description Of Major Ics
KS-FX722R Description of major ICs UPD178018AGC584(IC701) : System controller micon 1.Terminal Layout 24 – 1 41 – 64 2.Description Symbol Function Symbol Function KEY0 Key input 0 DOLBY O Dolby NR output H:Dolby NR ON KEY1 Key input 1 MS IN... - Page 8 KS-FX722R CXA2559Q(IC401):Playback equalizer amplifier with music sensor 1.Pin layout 2.Blockdiagram 24dB 100k PBFB2 MSMODE 7k/12k PBRIN2 DRSW 300k MS MODE PNGND TAPESW BIAS PNFIN2 MUTESW MUTE TAPE EQ PBREF FWD/RVS MS ON/ PBFIN1 MSOUT PBGND MSTC 300k PBRIN1 G1FB 7k/12k...
- Page 9 KS-FX722R 3.Pin function CXA2559Q 2/2 Pin No. Symbol Function PBTC1 Terminal of capacity of reproduction equalizer reproduction PBOUT1 Equalizer output terminal OUTREF1 Output standard terminal TAPEIN1 Tape input terminal Power supply terminal Non connection LINEOUT1 Line-out output terminal Non connection...
- Page 10 KS-FX722R HA13158A (IC941) : Power amp 1. Pin layout 2. Block diagram PVCC2 PVCC1 INVCC STBY INPUTBUFFER1 AMP1 INPUTBUFFER2 AMP2 INPUTBUFFER3 AMP3 INPUTBUFFER4 AMP4 MUTE PROTECTOR (ASO SURGE, TSD) 1-18...
- Page 11 KS-FX722R LC75823E (IC651) : LCD Driver 1. Pin Layout & Symbol 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 2.
- Page 12 KS-FX722R MOTOR SWITCH MAIN TAPE END.STANDBY MOTOR HEAD CJ402 CJ403 TO SPEAKER TO CD CHANGER MOTOR METAL CONNECTOR TO REAR LINE OUT TAPE IN MODE J751 CP961 STANDBY J931 PHOTO IC401 REEL L/R F PB EQ L/R R CXA2559Q DOLBY...
- Page 13 4.7k CH.R LCDDA R725 4.7k IC751 LCDCK R726 4.7k HD74HC126FP-X Tape PB / Main signal R754 CH.L J751 QNZ0095-001 Parts are safety assurance parts. When replacing those parts make sure to use the specified one. Note:KS-FX722R series. FSDH3170-005BW 1/3 /tr/s/jes/3170ma.001...
- Page 14 Mecha control circuit section Q403 2SB1322/RS/-T R401 Q402 DTC114EKA-X CJ403 QGF1219F1-11 0.015 C411 Q401 R418 22/16 C409 IC401 R416 910K IC402 LB1641 C422 CJ402 0.015 C410 C425 0.01 C424 QGB1214K1-18S CJ401 Tape PB / Main signal Note:KS-FX722R series FSDH3170-005MW 3/3 /te/s/jes/3170me.001...
- Page 15 R611 R612 1.2K 1.8K 2.7K 3.9K S608 S610 S611 S614 S609 S612 S613 SELECT DISP MO/RND EJECT R613 R614 R615 R616 R617 1.2K 1.8K 2.7K S615 S616 S617 S618 S619 S620 6/12 TAPE AM/FM CD-CH Note:KS-FX722R series FSDH3170-005SW 2/3 /tr/s/jes/3170sw.001...
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Page 16: Printed Circuit Boards
R706 C704 X701 C961 R755 R754 C305 C762 R723 R763 D978 R727 R758 R773 C977 R708 IC751 D626 R722 [REMOCON] 1 2 3 4 R713 D741 C711 S701 D742 D738 R982 R983 D623 D610 D605 D627 Note:KS-FX722R /tr/p/jes/10003/10003mo Note:KS-FX722R /tr/p/jes/10011/10011mo... - Page 17 KS-FX722R Mecah control board Reel board CA-IN Main:- Main:+ MODE Sub:- Sub:+ S T- B Y CrO2...
- Page 18 KS-FX722R Exploded view of general assembly and parts list Block No.
- Page 19 KS-FX722R Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area ZCKSFX250J-FB FRONT ASS'Y FSJC1052-002 FRONT CHASSIS FSJC3014-003 CASSETTE LID CH-CONTROL VKW4947-002 DOOR SPRING FSYH4036-050 SHEET FSKL2001-002 MECHA BRACKET(L) LEFT BRACKET FSKL2002-001 MECHA BRACKET(R) RIGHT BRACKET...
- Page 20 KS-FX722R Parts list (General assembly) Block No. M1MM Item Parts number Parts name Q'ty Description Area VMA4652-001SS EARTH PLATE GE40103-001A REG BRACKET GE40104-002B HEAT SINK FSKM3012-011 REAR BRACKET WITH 10A LABEL QYSDST2606Z SCREW QYSDSF3006Z SCREW QMFZ047-100-T FUSE LCD 1 QLD0158-001...
- Page 21 KS-FX722R Electrical parts list (Main board) Block No. 01 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area QERF1HM-104Z E CAPACITOR 0.1MF 20% 50V C 761 NCB31EK-223X C CAPACITOR NCB31EK-563X C CAPACITOR C 762 NCS31HJ-561X...
- Page 22 KS-FX722R Electrical parts list (Main board) Block No. 01 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area IC751 HD74HC126FP-X R 132 NRSA63J-222X MG RESISTOR IC761 SAA6579T-X R 133 NRS181J-101X MG RESISTOR IC911 TEA6320T-X R 134...
- Page 23 KS-FX722R Electrical parts list (Main board) Block No. 01 Electrical parts list (Mecha control board) Block No. 02 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area R 725 NRS181J-472X MG RESISTOR C 401 NDC31HJ-101X...
- Page 24 KS-FX722R Electrical parts list (Front board) Block No. 03 Item Remarks Item Remarks Parts number Parts name Area Parts number Parts name Area C 651 NCB31HK-103X C CAPACITOR R 641 NRSA02J-821X MG RESISTOR C 652 NBE20JM-475X TS E CAPACITOR R 651...
- Page 25 KS-FX722R Packing materials and accessories parts list Block No. Block No. KIT:A7 A11 A2 A6 3-14...
- Page 26 KS-FX722R Parts list (Packing) Block No. M3MM Item Parts number Parts name Q'ty Description Area FSPG4002-001 POLY BAG INSTRUCTIONS QPA00801205 POLY BAG QPC03004315P POLY BAG GE30123-005A CARTON GE10007-001A PAPER CUSHION LEFT/RIGHT SIDE QPA01003003 POLY BAG HARD CASE FSYH4036-068 SHEET Parts list (Accessories) Block No.