JVC CA-MXJ270V Service Manual Download Page 44 | Manualshive

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MX-J270V

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-Vp (POWER)
OUT
+Vp (POWER)
N.C.
N.C.
MUTE
STAND-BY
-Vs (SIGNAL)
+Vs (SAIGNAL)
BOOTSTRAP
N.C.
SUR
NON INVERTING INPUT
INVERTING INPUT
STAND-BY GND

BOOTSTRAP

IN+

IN-

BIPOLAR

TRANSCONDUCTANCE

INPUT STAGE

MOS GAIN &

LEVEL SHIFTING

STAGE

MOS OUTPUT STAGE

SHORT CIRCUIT

PROTECTION

-Vs

OUTPUT

BOOTSTRAP

+Vs

TDA7295 (IC101, IC201) : Audio AMP

1. Pin arrangement chart

2. Block diagram

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Summary of Contents for CA-MXJ270V

Page 1: ...VOLUME CD CD CD FM AM CD PLAY REC PLAY AUTO REVERSE TAPE MIC LEVEL 1 BIT DUAL D A CONVERTER AUX PHONES MX J270V MIC MIN MAX AUTO REVERSE PLAY EXCHANGER VIDEO CD NTSC PAL COMPATIBILITY REC START STOP KEY CONTROL DUBBING CD REC START NTSC PAL PAL AUTO RANDOM REPEAT PRESET TUNING VCD NUMBER REVERSE MODE TAPE A B SOUND MODE ACTIVE BASS EX PREV NEXT ECHO SELECT MPX V REPLACE V MASKING EJECT EJECT 1 CD ...

Page 2: ...currnet check Electrical shock hazard testing After re assembling the product always perform an isolation check on the exposed metal parts of the product antenna terminals knobs metal cabinet screw heads headphone jack control shafts etc to be sure the product is safe to operate without danger of electrical shock Do not use a line isolation transformer during this check Plug the AC line cord direc...

Page 3: ...lning är denna del är öppnad och spårren är urkopplad Betrakta ej strålen VARO Avattaessa ja suojalukitus ohitettaessa olet alttiina näkymättömälle lasersäteilylle Älä katso säteeseen ADVARSEL Usynlig laserstråling ved åbning når sikkerhedsafbrydere er ude af funktion Undgå udsættelse for stråling ADVARSEL Usynlig laserstråling ved åpning når sikkerhetsbryteren er avslott unngå utsettelse for strå...

Page 4: ...ptical pickup 1 In order to maintain quality during transport and before installation both sides of the laser diode on the replacement optical pickup are shorted After replacement return the shorted parts to their original condition Refer to the text 2 Do not use a tester to check the condition of the laser diode in the optical pickup The tester s internal power source can easily destroy the laser...

Page 5: ...e body Remove the two screws B on both sides of the body Remove the metal cover from the body while lifting up the rear part of the metal cover 1 2 3 Main body Removing the metal cover See Fig 1 to 3 Disassembly method Fig 3 Fig 2 Fig 1 Metal cover A A A Metal cover B Metal cover B ...

Page 6: ...and b and band c which bundle two harnesses coming from the MIC headphone board and one harness coming from the video board respectively Detach upward the rear part of the CD changer mechanism assembly while pulling the front panel assembly and the rear panel outward then pull out the front part backward and upward 1 2 3 4 5 6 7 Removing the CD changer mechanism assembly See Fig 4 to 7 Fig 6 Fig 5...

Page 7: ...he inside of the main board Turn over the body and remove the four screws E Release the joint d and e on both sides of the body using a screwdriver and detach the front panel assembly toward the front 1 2 3 Removing the front panel assembly See Fig 8 to 11 Fig 9 Fig 8 Fig 10 Fig 11 Main board CN301 CN302 CN306 CN307 CN312 CN305 E Front panel assembly Front panel assembly Joint d Front panel assemb...

Page 8: ... screw I attaching the rear panel to the chassis base Remove the two screws J attaching the rear panel to the voltage selector Remove the two screws K attaching the rear panel to the video board Release the lower two joints f and g on both sides of the rear panel using a screwdriver and detach the rear panel backwards 1 2 3 4 5 6 Removing the rear cover the rear panel the voltage selector and the ...

Page 9: ...ain board See Fig 16 to 19 Prior to performing the following procedure remove the rear cover rear panel voltage selector and the video board Remove the two screws N attaching the heat sink to the main board Remove the IC bracket 1 and 2 on the back of the heat sink Pull out the heat sink toward you 1 2 To remove the heat sink from the main board Prior to performing the following procedures remove ...

Page 10: ...Remove the four screws O attaching the power transformer assembly When removing the power transformer assembly with the power cord remove the rear panel and pull out the power cord stopper from the bottom chassis upward 1 2 3 Removing the power transformer assembly See Fig 20 to 22 Fig 20 Fig 21 Fig 22 O Power transformer assembly CN901A CN901B O Power transformer assembly Tie band j Power transfo...

Page 11: ...r to performing the following procedure remove the cassette mechanism assembly Disconnect the card wire from connector CN301 and CN302 on the cassette amplifier board Remove the six screws R attaching the cassette amplifier board Unsolder the soldering k on the harness for the DC motor Detach the cassette amplifier board toward you 1 2 3 4 Front panel assembly Removing the MIC headphone board See ...

Page 12: ... front panel assembly and detach the volume board 1 2 Remove the eight screws U attaching the multi control board 1 Removing each board in the front panel assembly See Fig 29 to 31 Removing the multi control board See Fig 29 Removing the volume board See Fig 30 and 31 Remove the three screws W attaching the power switch board 1 Remove the four screws V attaching the eject switch board 1 Removing t...

Page 13: ... Traverse mechanism assembly Remove the CD Servo control board Remove the screw B retaining the disc stopper See Fig 3 Remove the three screws C retaining the T bracket See Fig 3 From the clamper base section c remove both of the edges fixing the rod See Fig 2 and 3 Remove the screw D retaining the clamper assembly See Fig 3 From the left side face of the chassis assembly remove the one screw E re...

Page 14: ...8 13 14 15 Manually turn the motor pulley in the clockwise direction until the lifter unit stopper is lowered from the section e of CD tray assembly See Fig 8 Pull out all of the three stages of CD tray assembly in the arrow direction f until these stages stop See Fig 6 At the position where the CD tray assembly has stoppend pull out the CD tray assembly while pressing the two pawls g and g on the...

Page 15: ... the CD mechanism assembly in the arrow direction l remove the assembly from the lifter unit See Fig 12 Fig 10 Fig 12 Fig 11 Fig 13 Removing the CD pick unit See Fig 13 1 2 3 4 Move the cam gear in the arrow direction m Then the CD pickup unit will be moved in the arrow direction n According to the above step shift the CD pickup unit to the center position While pressing the stopper retaining the ...

Page 16: ... gear r align the pawl s position of the drive unit to the notch position Fig 15 on the cam gear r Pull out the drive unit and cylinder gear See Fig 17 While turning the cam gear r align the pawl t position of the select lever to the notch position Fig 18 on the cam gear r Remove the four screws I retaining the cam unit cam gear r and cams R1 R2 assembly See Fig 18 Fig 14 Fig 16 Fig 15 Fig 18 Fig ...

Page 17: ...ket in the arrow direction remove the gear bracket See Fig 19 From the notch v section on the chassis assembly fixing the edge of gear bracket remove and take out the gear bracket See Fig 20 Remove the belts respectively from the right and left actuator motor pulleys and pulley gears See Fig 19 After turning over the chassis assembly remove the actuator motor while spreading the four pawls w fixin...

Page 18: ...cam gear r See Fig 23 1 2 3 4 Remove the slit washer fixing the cams R1 and R2 assembly By removing the two pawls x fixing the cam R1 separate R2 from R1 Remove the slit washer fixing the cam gear r Pull out the cam gear r from the C G base assembly Removing the C G base assembly See Fig 23 and 24 Remove the three screws K retaining the C G base assembly Fig 24 K Slit washer Pawl Cam R2 Slit washe...

Page 19: ...imuth screw retaining the playback head 8 Take out the playback head from the front of the head mount 9 The recording and eraser heads should also be removed similarly according to Steps 1 8 above Reassembling the playback recording and eraser heads See Fig 2 3 1 Reassemble the playback head from the front of the head mount to the position as shown in Fig 3 2 Fix the reversing azimuth screw 3 Set ...

Page 20: ...the capstan motor assembly 1 Remove the six screws B retaining capstan motor assembly See Fig 5 2 While raising the capstan motor remove the capstan belts A and B respectively from the motor pulley See Fig 6 Caution 1 Be sure to handle the capstan belts so carefully that these belts will not be stained by grease and other foreign matter Moreover these belts should be hand while referring to the ca...

Page 21: ...ixing the capstan shafts R and L and pull out the flywheels R and L respectively from behind the cassette mechanism Removing the reel pulse P C board and solenoid See Fig 11 1 Remove the five pawls c d e f g retaining the reel pulse P C Board 2 From the surface of the reel pulse P C Board parts remove the two pawls h and i retaining the solenoid Capstan motor Joint bracket Flywheel R Flywheel L Fl...

Page 22: ...and 22 5 kHz Tuner section Voltage input to the tuner B DC 5 7 V VT DC 12 V Standard measuring output 26 1 mV 0 28 V 3ohm Input locations AM standard loop antenna FM TP1 hot and TP2 GND Standard settings for measuring volume Sound OFF Effective hyper bass OFF Volume adjustment VOL 23 Precautions for measuring 1 Input 30 pF and 33 kohm to the IF sweeper output and 0 082 F and 100 kohm to the sweepe...

Page 23: ...ette Mechanism Unit Section Head azimuth adjusting screw Forward side Head azimuth adjusting screw Reverse side Head azimuth adjusting screw Forward side Head azimuth adjusting screw Reverse side Playback head Playback recording and eraser heads or playback head Tape speed ADJ Bias ADJ L Bias ADJ R Head amplifier mechanism control board ...

Page 24: ... Section Items Measurement conditions Measurement method Standard values Adjusting positions After setting to the double speed motor confirm that the frequency counter reading becomes 4 800 400 300Hz when the test tape VT712 3kHz has been play back with the playback mechanism When the test tape VT712 3kHz has been played back with the playback mechanism or recording and playback mechanism at the b...

Page 25: ...l Both recording and headphone terminals Reference frequency 1kHz and 10kHz REF 20dB Test tape TYP AC 514 Measurement input terminal OSC IN AC 225 4 20 A AC 514 4 0 A Output deviation between 1kHz and 10kH 1dB 2dB LcH VR101 RcH VR201 LcH VR101 RcH VR201 Electrical Performance Items Measurement conditions Measurement method Standard values Adjusting positions 1 While changing over to and from BIAS ...

Page 26: ...matic measurement of TE amplitude and automatic tuning of TE balance 500mv div 2ms div Fig 1 Approx 3sec pin 25 of IC601 TE Approx 1 8V VREF Tracking error waveform at TOC reading Power ON Power Key Confirm that the Focus error S cuve siganl at the pin27 of IC601 is approx 2Vp p Confirm that the siganl from pin24 IC603 is 0V as a accelerated pulse during approx 400ms Confirm the waveform of the Tr...

Page 27: ...n the life of the laser diode has expired the following symptoms wil appear 1 The level of RF output EFM output ampli tude of eye pattern will below Is RF output 1 1 0 15Vp p Replace it NO YES O K 3 Semi fixed resistor on the APC PC board The semi fixed resistor on the APC printed circuit board which is attached to the pickup is used to adjust the laser power Since this adjustment should be perfor...

Page 28: ...AL FBAL FE FE OUT TE TE OUT CROSS TE BPF VDET LD OFF VREF ENV 30 24 25 26 23 22 1 4 3 33 32 34 31 36 35 13 14 15 16 20 2 21 6 29 7 28 27 8 9 10 17 11 12 19 ENV CURCUIT RF DET AGC EQ BDO OFTR VCBA VCBA VCBA VCBA 1 Pin layout 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 36 35 34 33 32 31 30 29 28 27 26 25 24 23 22 21 20 19 2 Block diagram Description of major ICs ...

Page 29: ...rror Inverse input pin for tracking error amp Tracking error signal output Tracking error cross output Input pin of tracking error through BPF Vibration detection signal output Connect to ground Reference voltage output Description APC amp input terminal APC amp output terminal APC ON OFF control terminal Envelope output Ground RF detection signal output Of track status signal output BDO output pi...

Page 30: ... 2 3 4 5 6 7 8 OUT1 IN1 IN1 GND IN2 IN2 OUT2 Vcc 1 2 1 2 3 4 5 6 7 8 9 TA8409S IN2 VCC OUT 2 NC GND VS OUT 1 VREF IN1 IN1 0 1 0 1 IN2 0 0 1 1 OUT1 H L L OUT2 L H L MOTOR STOP CW CCW CCW CW BRAKE INPUT OUTPUT MODE 1 Pin layout 2 Pin function TA8409S IC851 852 Motor driver 1 2 3 5 4 NC IN A GND VCC OUT Y TC7SH04FU IC108 CMOS Inverter ...

Page 31: ...el shift Level shift D BUF D BUF DRIVER MUTE D BUF D BUF D BUF T S D D BUF D BUF D BUF GND CH4 OUTA CH4 OUTB CH4 INA CH4 INB BIAS IN Vcc CH1 OUTA CH1 OUTB CH1 INA CH1 INB TEST1 TEST2 MUTE Vcc CH3 INB CH3 INA CH3 OUTB CH3 OUTA OP IN OP IN CH2 INB CH2 INA CH2 OUTB CH2 OUTA GND OP OUT BA6897FP IC801 4channel driver GND ...

Page 32: ...is 200K Typ BH3854 IC306 E Volume 32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 A GND IN1 NF1 BVN1 BIN1 BV01 TIN1 TVO1 OUT1 Vcc SC PORT1 PORT2 PORT3 PORT4 VSS RIP IN2 NF2 BVN2 BIN2 BVO2 TIN2 TVO2 OUT2 VC TC BC CLK DATA LATCH VREF 2K 47K 47K 20K 20K 20K 200K 20K 20K 10K 10K 10K Vcc TONE CONTROL BASS TREBLE Vcc VOLUME VOLUME MATRIX SURROUND SOUND VOLUME CONTR...

Page 33: ...r port output Terminal for port output Digital system ground 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 VREF LATCH DATA CLK BC TC VC OUT2 TV02 TIN2 BV02 BIN2 BVN2 NF2 IN2 RIP Terminal for 3 8V reference voltage output Terminal to receive latch data Terminal to receive data Terminal to receive clock Terminal for time constant attachment for switching shock protection Terminal for time constant...

Page 34: ...Force H for normal operation PAL NTSC select for CD G mode Force L for normal operation Digital GND Analog GND Use open this pin for normal operation I O GND Clock output 2 Force L for normal operation Clock output 1 I O VDD Clock output 4 Analog VDD Pin No Symbol I O Function I O O O O BU2173F IC105 VCO 1 Terminal Layout 2 Block diagrams 3 Pin function 1 2 3 4 5 6 7 8 9 18 17 16 15 14 13 12 11 10...

Page 35: ... DRAM LCAS input Connect to GND DRAM write enable signal output DRAM UCAS ROM address terminal Power supply for Input Output DRAM UCAS input terminal DRAM RAS0 1 terminal DRAM data ROM address terminal Ground terminal for Input Output DRAM data ROM address terminal ROM address extension terminal Power supply for Input output Video data terminal R6 CrCb6 YCrCb066 Ground terminal for Input Output Vi...

Page 36: ...MX J270V 1 36 HD74HCT244 IC113 Buffer 1 Terminal layout 2 Block diagram ...

Page 37: ...t output port Input output port Data input output Function IF counter signal input IF signal output Not use AM Local OSC signal output FM Local OSC signal input Power suplly VDD 4 5 5 5V When power ON Reset circuit move PLL charge pump output H Local OSC frequency Height than Reference frequency L Low Agreement Height impedance Output for active lowpassfilter of PLL Input for active lowpassfilter ...

Page 38: ...Adress input Adress input Adress input Adress input Data output Connect to GND Data output Chip enable input Adress input Chip enable input Adress input Adress input Adress input Data output Power supply VPP A16 A15 A12 A7A0 D0D2 GND D3D7 CE A10 CE A11 A9 A8 A13 A14 D17 D18 VCC Pin No Symbol I O Function I I I I O O I I I I I I O LH531HEG IC102 1M ROM 2 Block diagram 1 Terminal Layout 3 Pin Functi...

Page 39: ...L composite Read Write signal input output Address signal output for MPEG LSI Data strobe signal output Data terminal for MPEG LSI SRAM address signal output SRAM chip select signal output SRAM data Input Output terminal SRAM read write signal input output Not use Reset signal input Non connect Non connect Connect to GND Non connect Clock input terminal Power supply Communication signal output Clo...

Page 40: ...SUBQ AVDD2 CLVS CRC BLKCK CLDCK SBCK SUBC DEMPH RESY FLAG6 RESY EFM DEMODULATION SUBCODE DEMODULATION SYNC INTERPOLATION 16k SRAM CIRC ERROR CORRECTION DEINTERLEVE LRCKIN MSEL BCLK SSEL SRDATAIN PSEL IOSEL DIGITAL DEEMPHSIS 8TIMES OVER SAMPUNC DIGITAL FILTER 1BIT DAC LOGIC S PEM R PEM L DIGITAL AUDIO INTERFASE DIGITAL AUDIO INTERFASE INTER POLATION SOFT MUTING DIGITAL ATTENUATION PEAK DETECTIVE AU...

Page 41: ...signal output Kick pulse output Tracking drive output Focus drive output Reference voltage input pin for D A output block TVD FOD FBA TBAL Focus Balance adjust signal output Tracking Balance adjust signal output Focus error signal input Analog input Tracking error signal input Analog input RF envelope signal input Analog input Vibration detect signal input H detect Off track signal input H off tra...

Page 42: ...Lch Voltage controlled terminal When voltage of terminal is MONO at H and ST at L When voltage of terminal is AM at H and FM at L Multi plex signal input AM detection signal output FM detection signal output Bypass to FMIF Input of AMIF signal Fixed voltage output terminal Output terminal for AM mixer Input of FMIF signal Function Function 2 Pin Function 1 Block Diagrams 24 23 22 21 20 19 18 17 16...

Page 43: ...MX J270V 1 43 TC9409BF IC601 KARAOKE DSP ...

Page 44: ...GNAL Vs SAIGNAL BOOTSTRAP N C SUR NON INVERTING INPUT INVERTING INPUT STAND BY GND BOOTSTRAP IN IN BIPOLAR TRANSCONDUCTANCE INPUT STAGE MOS GAIN LEVEL SHIFTING STAGE MOS OUTPUT STAGE SHORT CIRCUIT PROTECTION Vs OUTPUT BOOTSTRAP Vs TDA7295 IC101 IC201 Audio AMP 1 Pin arrangement chart 2 Block diagram ...

Page 45: ...nted in Japan 200011 V VICTOR COMPANY OF JAPAN LIMITED AUDIO COMMUNICATION BUSINESS DIVISION PERSONAL MOBILE NETWORK BUSINESS UNIT 10 1 1Chome Ohwatari machi Maebashi city 371 8543 Japan No 20880 MX J270V ...

Page 46: ...L FM AM JA1 TO SPK CN306 CN307 AM COIL BLOCK TU1 FM TUNER PACK RF IN IF OUT CF1 Q1 FM IF CF2 IC1 FM AM IF DET MPX 1 24 23 21 19 18 17 13 CN305 CN301 JA303 T2 AM IF AF AMP 114KHz TRAP CN302 CN309 CD SERVO BOARD CN651 DSP BOARD CN602 CN601 CN312 VIDEO BOARD VIDEO O P CN304 CN303 CN311 IC302 3 1 2 4 5 SOURCE SELECT INPUT 31 24 IC306 VOL AMP EQ 3 1 IC307 BASS BOOST AMP 3 14 IC101 POWER AMP RY901 LINE ...

Page 47: ...ins Plug S4 S4 S4 S3 S3 S2 S3 S1 S1 S1 AC 110V 127V 220V 230 240V 50Hz 60Hz 1 2 3 4 5 6 7 8 AC110V 1 2 3 4 5 6 7 8 AC127V 1 2 3 4 5 6 7 8 AC220V 1 2 3 4 5 6 7 8 AC230 240V S2 12 5 14 2 15 16 8 10 4 3 1 7 9 13 17 6 Th Fuse 11 T999 TRANSFORMER Standard schematic diagrams SHEET 1 8 Parts are safety assurance parts When replacing those parts make sure to use the specified SHEET 2 8 ...

Page 48: ...6V22 C329 50V1 Q310 KTC3199 Q311 KTC3199 Q309 KTA1267 D320 1SS133 D201 1SS133 D101 1SS133 C327 16V47 R332 100K R247 56K C326 50V1 D319 1SS133 C325 50V0 47 R935 4 7K D301 1SS133 D304 1SS133 Q910 2SB1375 Q912 KTC3199 Q911 KTC3199 R925 2 2K R923 47K D915 MTZ5 6JAT C918 0 01 C919 10V100 MSIN FL1 FL2 35V SMUTE SCK FTU SPK PRI C346 47P R66 2 2K R65 1K D53 1SS133 D326 1N4003 Q915 DTC114ES SDATA MPX RIN L...

Page 49: ...9 1M R777 1K Q706 2SC2668 Q707 2SC2668 C726 39P C724 18P C722 0 001 C727 0 001 C725 22P C723 39P C721 22P C720 22P D704 1SS133 Q705 2SA1175 E F R774 4 7K R775 330 R773 10K R770 22K R771 22K R772 10K Q704 DTC114TS Q703 KTC3199 C717 10V1000 C716 50V1 C715 16V10 D702 1SS133 D701 1SS133 D703 1SS133 D705 MTZ5 1JA R776 10K L707 10uH R696 5 6K S707 REPEAT S708 PAL NTSC S706 RANDOM R695 3 9K R694 2 7K R69...

Page 50: ...A B C D E F G 1 2 3 4 5 2 5 MX J270V Cassette amplifier Mechanism control section TAPE P B signal SHEET 4 8 SHEET 2 8 SHEET 3 8 Note VDH1033 003PV ...

Page 51: ...H A B C D E F G 1 2 3 4 5 2 6 MX J270V CD Servo CD Mechanism control section CD AUDIO signal SHEET 5 8 SHEET 2 8 SHEET 2 8 SHEET 2 8 SHEET 6 8 SHEET 6 8 VIDEO CD signal ...

Page 52: ...MA5 MA4 MD0 MD1 MD2 MD3 MD4 MD5 MD6 MD7 MD15 MD14 MD13 MD12 MD11 MD10 MD9 MD8 MD15 MD12 MD11 MD9 MD8 MD7 MD6 MD5 MD4 MD3 MD14 MD15 MD10 MD0 MD1 MD2 MA0 MA1 MA2 MA3 MA4 MA5 MA6 MA7 MCEO MD15 MD14 MD13 MD12 MD11 MD10 MD9 MD8 3 3V D 5V A 5V VCC C V OUT VD23 HSYNC PAL60 N PAL ENCRST VSYNC HSYNC VD11 VD12 VD13 VSYNC PIXCLK VCLK VB VG VR VBLK VG VR PIXCLK RESET VCDEMP RESET HREQ SRCLK SRDAT MREQ HRDY HA...

Page 53: ...3 10K R604 10K R605 10K R609 10K R611 10K R610 10K R606 10K R608 10K R607 10K C610 330P C605 0 001 C604 0 0047 M C613 0 0022 M C607 0 01 C615 330P C609 0 0022 M C612 0 01 C601 10V100 C606 10V47 C617 50V1 C614 50V1 C608 50V1 C603 50V1 C611 10V100 C602 0 01 C616 50V1 C619 10V100 C618 0 01 C620 0 01 C621 1 MLC C624 0 01 C625 5 6P C622 10V100 C623 10V100 C626 5 6P X601 22 5792M C628 10V100 C629 6 3V22...

Page 54: ...01 1 2 3 FW852 1 2 3 G 4 5 6 7 VCC 8 IC852 BA15218F C853 100P C851 50V2 2 C854 50V2 2 C855 10V100 C856 10V220 R852 4 7K R856 47K R855 10K R853 150K R859 220 R860 12K R854 3 9K R861 10K C852 100P R858 2 2K 1 2 3 4 FW851 FW 4P L300 VR851 50K A R851 4 7K L852 47uH L851 47uH ROUT SW LOUT GND B 9V MIC AG C857 1000P C858 1000P R857 100 ...

Page 55: ...H A B C D E F G 1 2 3 4 5 2 10 MX J270V Main DSP video and power board Printed circuit boards Main board Video board DSP board Vol sel board Power transf board ...

Page 56: ...A B C D E F G 1 2 3 4 5 2 11 MX J270V Display Multi control switch board Display board Power switch board Eject switch board Multi control board Volume board ...

Page 57: ...H A B C D E F G 1 2 3 4 5 2 12 MX J270V Cassette mechanism amplifier board MIC headphone board ...

Page 58: ...A B C 1 2 3 4 5 MX J270V 2 13 CD Servo control board ...

Page 59: ...A B C D 1 2 3 4 5 MX J270V 2 14 Video CD board ...

Page 60: ...A B C 1 2 3 4 5 MX J270V 2 15 CD Tray section switch board Cam switch board ...

Page 61: ...MX J270V 2 16 MEMO ...

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