Jvc-KSFX-722-R-Service-Manual(1) 电路图 维修手册.pdf

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1、SERVICE MANUAL CASSETTE RECEIVER No.49591 Jan. 2001 COPYRIGHT 2001 VICTOR COMPANY 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

2、1-14 1-15 MO TP TP RDSRDS PTYPTY DISPDISP 891011127 DAB RadioFans.CN 收音机爱 好者资料库 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 Ca

3、ssette 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 RadioFans.CN 收音机爱 好者资料库 KS-FX722R 1-4 Disassembly method Removal of main parts (1) Detaching the front panel

4、unit (see Fig.2-1) 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) Disengage the four tabs in the right and left sides of unit and pull the front chassis forward to remove it. (3) Removing the bottom cover(see Fig.2-3.

5、2-4) 1.Remove one screw 2 retaining the IC to the heat sink. 2.Remove two screws 1 to remove the heat sink. 3.Turn the upside down, then insert and turn the screwdriver to remove the bottom cover and protect sheet. (4) Removing the main P.C.B.assembly (with rear panel) (see Fig.2-5) 1.Remove two scr

6、ews 4 retaining the rear panel to the chassis. 2.Remove two screws 3 retaining the amp. P.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

7、 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 remove the changer controller jack. (except KS-F530R) (6)Mechanism assembly(see Fig.2-6) 1.Remove fo

8、ur mechanism mouting screws 9 retaining the mechanism assembly. 2.Remove four screws B retaining the cover. 3.Remove one screw which is the fixation of TOP COVER and the substrate. (7)Front panel unit(see Fig.7) Remove four screws A retaining the rear cover. Enclosuer section Top side Detach it Pres

9、s the Control Panel Release button to detach the control panel. Fig. 2 - 1 Bottom Cover Main Board CP501 Connection to the mechanism connector position 3 3 4 4 5 6 7 8 RadioFans.CN 收音机爱 好者资料库 KS-FX722R 1-10 Adjustment method Test instruments reqired for adjustment 1. Digital osclloscope(100MHz) 2. F

10、requency Counter meter 3. Electric voltmeter 4. Wow & flutter meter 5. Test Tapes VT724. . for DOLBY level measurement VT739.For playback frequency measurement VT712.For wow flutter & tape speed measurement VT703. For head azimuth measurement 6. Torque gauge. Cassette type for CTG-N (mechanism adjus

11、tment) Measuring 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(Indication0) Loudness,Dolby NR,Sound,Cruise:Off Volume position is about 2V at speak

12、er output with following conditions.Playback the test tape VT721. AM mode999kHz/62dB,INT/400Hz,30% modulation signal on recieving. FM mono mode97.5MHz/66dB,INT/400Hz,22.5kHz deviation pilot off mono FM stereo mode 1kHz,67.5kHz dev. pilot7.5kHz dev. Output level0dB(1 V,50 /open terminal) MC-109Cfor T

13、APA CURL confirmation (without Padd type) KS-FX722R 1-12 EXTKSRT002-18P Information for using a car audio service jig 1.Were 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,

14、this type of extension cord is needed to check operation of the mechanism assembly after disassembly. 3.Extension cord : 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 met

15、hod 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 CP701 connector when in- stalling the front panel. Cassette mechanism Fr

16、ont panel assembly Main boardMain board Extension cord EXTKSRT002-18P to Main board to Cassette mechanism KS-FX722R 1-14 01 3 1 3 2 Reel motor Sub motor Mecha control board Reel board Main board Control board Flat cablle Head relay board Playback head 09 09 134 209 13 420 9 CN403 CN401 CN402 CP501 C

17、J701 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 KS-FX722R 1-15 Description of major ICs UPD178018AGC584(IC701) : System controller micon 24 1 41 64 25 40 80 65 1.Terminal L

18、ayout 2.Description 1KEY0IKey input 0 2KEY1IKey input 1 3KEY2IKey input 2 4LEVELILevel meter input 5SMISignal meter input 6SQISignal quality input 7LCDCEOChip enable output to LCD driver 8LCDDAOData output to LCD driver 9LCDSCKOClock output to LCD driver 10BUSI/OOJ-BUS I/O switch output 11UNLOCKOPLL

19、 unlock output L:unlock H:lock 12BUSSIIJ-BUS data input 13BUSSOOJ-BUS data output 14BUSSCKOJ-BUS clock output 15 - 20NC-Non connect 21GNDPORT-GND for port 22VDDPORT-VDD for port 23NC-Non connect 24AFCKOAF check output L:AF check 25MONOOMonaural ON/OFF output H:Monaural ON 26FM/AMOOutput for FM power

20、 supply H:FM Mode 27SEEK/STOPOAuto seek/Stop output H:Aut seek L:Stop 28NCINon connect 29IFCIFM middle frequency counter input 30VDDPLL-VDD for PLL 31OSCIFM/AM oscillation input 32NC-Non connect 33GNDPLL-GND for PLL 34EO0OError out output from change pump 35EO1OError out output from change pump 36IC

21、-Connect to Ground 37SD/STISeek/Stop port H:SD input Seek/Stop port L:Stereo input 38STAGEIH:It is CD mode and there is REPEAT L:Does not exist 39NC-Non connect 40MOTOROMain motor output H:At rotation 41FF/REWOMS IC sensitivity switch output L:FF/REW 42F/ROFWD/REV change input H:FWD L:REV 43DOLBYODo

22、lby NR output H:Dolby NR ON 44MS INIBetween tunes signal input H:Between tunes 45I2CSCKI/O E-VOL IC control clock I/O 46I2CDAOOE-VOL IC control data output 47I2CDAIIE-VOL IC control data input 48REELIReel rotation detect signal input 49SUBMO-OSub motor output - 50SUBMO+OSub motor output + 51MODEIMod

23、e position detection input H:Non-mode L:Mode position 52TAPEINICassette in detect input H:IN L:OUT 53STBYIStandby detect input H:Eject side L:Operation side 53T-ENDITape end detect input 200ms L:tape end 54-59NC-Non connect 60MUTEOL:Mute ON H:Mute OFF 61POWEROPower supply output H:power ON 62TEL-MUT

24、EITEL-MUTE input 63, 64NC-Non connect 65ENC1IEncoder signal input 66ENC2IEncoder signal input 67ONIH:Operation mode L:Power save mode 68STOPIStop mode input 69RDSCKIRDS clock input 70RDSDAIRDS data input 71REMOCONIRemocon signal input (Not used) 72DETACHIDetach input It is L of 200ms or more and an

25、operation mode H:power save mode 73JBUS INTIJ-BUS Interruption input 74REGCPU-Connects GND through the capacitor of 0.1 F 75GND-To ground 76X2-Crystal oscillator connection for system 77X1-clock oscillation 78REGOSC-Connects GND through the capacitor of 0.1 F 79VDD-Power supply 80NC-Non connect Pin

26、SymbolI/OFunction No. Pin SymbolI/OFunction No. KS-FX722R 1-16 1.Pin layout 2.Blockdiagram 40 31 11 20 1 10 30 21 PBFB2 PBRIN2 PNGND PNFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 MSMODE DRSW TAPESW MUTESW NC NC MSOUT MSTC G1FB G2FB PBTC2 PBOUT2 OUTREF2 TAPEIN2 GND DIREF LINEOUT2 NC NC MSSW PBTC1 PBOUT1

27、 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 /12070 /120 100k 100k 24dB MS MODE BIAS MUTE TAPE EQ FWD/RVS LPFDET 24dB T2 X1 X1 F2 30k 30k 45k F1 300

28、k T1 F3 Vcc MS ON/ OFF CXA2559Q(IC401):Playback equalizer amplifier with music sensor KS-FX722R 1-17 3.Pin function Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Symbol PBTC1 PBOUT1 OUTREF1 TAPEIN1 Vcc NC LINEOUT1 NC NC MSLPF G2FB GI1FB MSTC MSOUT NC NC MUTESW TAPESW DRSW MSMODE I/O - O

29、 O I - - O - - - - - - O - - I I I I Function Terminal of capacity of reproduction equalizer reproduction Equalizer output terminal Output standard terminal Tape input terminal Power supply terminal Non connection Line-out output terminal Non connection Non connection Detection LPF terminal between

30、tunes Detection level set terminal between tunes Detection level set terminal between tunes Time constant connection terminal for the detection between tunes Detection output terminal between tunes Non connection Non connection Mute function control terminal Reproduction equalizer control terminal H

31、ead 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 R

32、eproduction equalizer output terminal Terminal of capacity of reproduction equalizer Reproduction equalizer return terminal Reproduction equalizer input terminal Reproduction equalizer system earth terminal Reproduction equalizer input terminal Middle point terminal Reproduction equalizer standard t

33、erminal Reproduction equalizer input terminal Reproduction equalizer system earth terminal Reproduction equalizer input terminal Reproduction equalizer return terminal 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 MSSW NC NC LINEOUT2 DIREF GND TAPEIN2 OUTREF2 PBOUT2 PBTC2 PBFB2 PNRIN2

34、PBGND PBFIN2 VCT PBREF PBFIN1 PBGND PBRIN1 PBFB1 I - - O - - I O O - I I - I O O I - I I CXA2559Q 2/2 KS-FX722R 1-18 HA13158A (IC941) : Power amp 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 AMP

35、1 AMP2 AMP3 AMP4 MUTE PVCC1PVCC2 INVCC + - + - + - + - 12 22 14 18 6 3 4 5 7 8 9 15 16 17 19 20 21 1 23 KS-FX722R 1-22 LC75823E (IC651) : LCD Driver 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 S1 S2 S3 S4 S5 S6 S7 S8 S9 S10 S11 S12 S13 S14 S15 S16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 48 47 46

36、45 44 43 42 41 40 39 38 37 36 35 34 33 S48 S47 S46 S45 S44 S43 S42 S41 S40 S39 S38 S37 S36 S35 S34 S33 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 S17 S18 S19 S20 S21 S22 S23 S24 S25 S26 S27 S28 S29 S30 S31 S32 DI CL CE OSC Vss VDD2 VDD1 INH VDD COM3 COM2 COM1 S52 S51 S50 S49 1. Pin Layout & Sym

37、bol 2. Pin Function Pin No. 1 to 52 53 to 55 56 57 58 59 60 61 62 63 64 I/O O O - I I I - I/O I Segment output pins used to display data transferred by serial data input. Common driver output pins. The frame frequency is given by : t0=(fosc/384)Hz. Power supply connection. Provide a voltage of betwe

38、en 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. Used for apply

39、ing the LCD drive 1/3 bias voltage externally. Must be connected to VDD1 when a 1/2 bias drive scheme is used. Power supply connection. Connect to GND. Oscillator connection. An oscillator circuit is formed by connecting an external resistor and capacitor at this pin. Serial data CE : Chip enable in

40、terface connection to the controller. CL : Sync clock DI : Transfer data Symbol S1 to S52 COM1 to COM3 VDD INH VDDD1 VDD2 Vss OSC CE CL DI Function ABC 1 2 3 4 5 KS-FX722R 2-1 Block diagram IC751 CHANGER CONTROL HD74HC126FP-X HEAD IC401 PB EQ CXA2559Q IC941 POWER AMP. HA13158A IC911 E.VOLUME TEA6320

41、T-X IC701 SYSTEM CONTROL MICON UPD178018AGC584 TU1 AM/FM TUNER PACK QAU0156-001 SUB MOTOR IC402 DC MOTOR DRIVER LB1641 LCD1 QLD0158-001 IC651 LCD DRIVER LC75823E KEY S601 S619 MAIN MOTOR SWITCH TAPE 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/

42、R OUT LR OUT RR OUT LF OUT RF L/R F L/R R LRO RRO CP501 J751CP961 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 CJ403CJ

43、402 J1 AM FM TO CD CHANGER TO SPEAKER CONNECTORTO REAR LINE OUT Tuner.Power AMP.Changer/System ControllerLCD DRIVER/KEY SWITCH CIRCUT MECHANISM CONTROL ABCDEFG 1 2 3 4 5 2-3 KS-FX722R Note:KS-FX722R series. FSDH3170-005BW 1/3 /tr/s/jes/3170ma.001 FM Radio signal / Radio main signal AM Radio signal C

44、D signal Tape PB / Main signal Receiver & System control section Standard schematic diagrams CP501 C705 R732 CJ701 IC911 TU1 D243 IC751 R26 IC761 Q750 R27 R750 C970 J1 L1 Q6 R9 R8 R7 C20 R10 C969 C712 Q11 C711 C305 R14 C7 C6 Q10 Q7 C707 R982 Q13 C151 Q3 R983 R981 R960 Q241 C709 C21 Q962 R979 R308 R7

45、41 C253 C251 R251 R151 D982 Q151 C767 C762 C765 C764 C1 C763 R24 Q979 C153 C219 IC941 R748 Q303 R113 R213 R116 Q966 Q301 Q302 Q967 IC701 R707 R749 C968 Q965 J751 R704 R703 R702 R701 D932 R758 R757 R756 R755 R754 R715 R716 R717 X701C701 C702 R711 Q1 R713 R712 C703 R724 R725 R726 R718 R719 R720 C704 C

46、245 Q232 R216 Q231 D242 R115 R215 C30 CP961 R709 R710 R708 Q132 R740 R978 R233 R737 R738 R739 R736 R133 L701 R746 D244 D931 D933 R306 D983 D981 C304 C302 C766 R974 D977 Q978 R969 R970 D966 Q251 C9 C218 C118 C119 C961 C708 Q12 Q131 Q5 Q951 D963 J931 R706 R141 R142 R241 R242 D961 R961 R232 R132 R135 R

47、235 R25 C945 C944 L961 C978 C25 D1 D2 C963 R773 Q2 R4 R5 D5 D979 Q952 R12 R29 D3 C932 D891 C912 R980 C112 R152 C152 C252 R252 R253 R153 C761 X761 R761 R763 R762 R3 Q4 C246 C115 C213 C911 C913 C964 C966 C214 C215 C216 C116 C114 C217 C113 C212 R911 R912 R913 R112 R212 R941 R30 C967 C943 D965 C713 R759

48、 R753R752 C751 D951 R234 R721 R722 R723 R727 R134 R245 R246 R32 R977 C117 C942 D241 R247 C247 C29 R705 C111 C211 R231 R131 C24 C979 R117R217 C933 D4 D892 R305 R302 R307 R303 R301 C154 C254 R34 R304 C301 C303 R734 R733 R975 C901 R743 C18 C977 C962 C965 R144 R143 R243 R244 C144 C143 C243 C244 R963R962 C941 R136 R236 D978 C17 Q891 C891 R891 R892 QGB1214J1-18S 0.001 47K VMC0334-001 TEA6320T-X QAU0222-001 1SS355-X HD74HC126FP-X 10k SAA6579T-X 2SC2412K/R/-X 1k 24K 0.047 QNB0100-001 4.7u 0K 2SA1037AK/RS/-X 1k 4.7k47k 0.001 3.9k 0