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SERVICE MANUAL
COMPACT COMPONENT SYSTEM
Contents
Safety precautions ---------------------------- 1- 2
Important for laser products ----------------- 1- 3
Preventing static electricity ----------------- 1- 4
Disassembly method ------------------------ 1- 5
Adjustment method -------------------------- 1- 18
MX-GA3V
SP-MXGA3V
CA-MXGA3V
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
SP-MXGA3V
Flow of functional
operation until TOC read -------------- 1- 20
Maintenance of laser pickup -------------- 1- 21
Replacement of laser pickup -------------- 1- 21
Description of major ICs ------------------- 1- 22
Wiring connection ----------------------------- 1- 29
MX-GA3V
Area Suffix
US ................... SINGAPORE
UX ....................... Saudi Araia
No. MB036
2003/11
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Summary of Contents for JVC MX-GA3V
- Page 1 MX-GA3V SERVICE MANUAL COMPACT COMPONENT SYSTEM MX-GA3V SP-MXGA3V CA-MXGA3V SP-MXGA3V Area Suffix US ....SINGAPORE UX ....... Saudi Araia Contents Safety precautions ---------------------------- 1- 2 Flow of functional Important for laser products ----------------- 1- 3 operation until TOC read -------------- 1- 20...
- Page 2 MX-GA3V Safety Precautions 1. This design of this product contains special hardware and many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits.
- Page 3 MX-GA3V Important for laser products 1. CLASS 1 LASER PRODUCT 5. CAUTION : If safety switches malfunction, the laser is able to function. 2. CAUTION : Visible and invisible laser radiation when open and interlock failed or defeated. Avoid direct 6.
- Page 4 MX-GA3V Preventing static electricity 1. Grounding to prevent damage by static electricity Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
- Page 5 MX-GA3V Disassembly method Commence disassembly of the set by removing the main units and then proceed to the components and assemblies inside the units. Replacement of the fuses and the power IC Top cover CD changer unit Front panel assembly...
- Page 6 MX-GA3V <Disassembly of the main blocks of the set> Replacement of the fuses and the power IC Replacing the fuses (See Fig.1, Fig.3) Replacing the power IC (See Fig.2) Prior to performing the following procedure, remove Prior to performing the following procedure, remove the left side BOARD and remove tuner PCB the top cover.
- Page 7 MX-GA3V Removing the top cover (See Fig.4 and 5) 1. Remove six screws B that retain the top cover from the panel rear of the body. 2. Remove eight screws C and D that retain the top cover from the two sides of the body.
- Page 8 MX-GA3V Removing the CD changer unit (See Fig.6 to 9) Prior to performing the following procedures, remove the top cover and both sides BOARD. [Caution] Although the CD mechanism unit can be removed without removing the CD tray panel, it is still recommended to remove it in order to prevent damage.
- Page 9 MX-GA3V Removing the front panel assembly (See Fig.10 to 11) Prior to performing the following procedures, remove the top cover and both board. Also remove the CD changer unit. 1. Disconnect the parallel wire and the cord wire from the connectors CN701, CN702, CN703, CN850 on the power amp.
- Page 10 MX-GA3V <Disassembly of units and assembly inside this set> Removing the CD PCB (See Fig.12 to 13) Prior to performing the following procedures, remove Fig.12(B) the top cover and both sides board. Also remove the CD changer unit. 1. The two screws E that retain the VCD assembly should be removed.
- Page 11 MX-GA3V Removing the CD changer mechanism assembly (See Fig.14 to 15) Prior to performing the following procedures, remove the top cover and both sides board. Also remove the CD changer unit. 1. Removing screws D from the front chuck base of the CD changer mechanism unit.
- Page 12 MX-GA3V Removing the CD pickup (See Fig.17) CD pickup Prior to performing the following procedures, remove the top cover and both sides board. Also remove the CD changer unit. Also remove the CD changer mechanism. 1. Widen the section F.
- Page 13 MX-GA3V Removing the cassette deck mechanism Front panel (See Fig.21) assembly Prior to performing the following procedures, remove the top cover. Also remove the CD changer unit. Also remove the front panel assembly. 1. Remove five screws Z retaining the cassette deck mechanism.
- Page 14 MX-GA3V Removing the switch PCB and sound mode and CD function switch PCB (See Fig.23 to 26) Front panel assembly Prior to performing the following procedures, remove the top cover and both sides board. Also remove the CD changer unit.
- Page 15 MX-GA3V Removing the cassette deck main motor, and replacing the main belts (See Fig.21, 27 and 28) Cassette deck mechanism (Front side) Prior to performing the following procedures, remove the top cover and both sides board. Also remove the CD changer unit.
- Page 16 MX-GA3V Removing the cassette deck heads (See Fig. 21 and 30) Prior to performing the following procedures, remove Cassette deck mechanism the top cover and both sides board. (Front side) Also remove the CD changer unit. Also remove the front panel assembly.
- Page 17 MX-GA3V Removing the power amp and supply PCB and the power trans PCB (See Fig. 2, 29 to 31) Prior to performing the following procedures, remove the top cover and CD changer unit. 1. Remove four screws B from the rear panel. (Fig.3) VIDEO OUT 2.
- Page 18 MX-GA3V Adjustment method Measurement instruments required Radio input signal for adjustment AM modulation frequency : 400Hz 1. Low frequency oscillator. Modulation factor : 30% This oscillator should have a capacity to output FM modulation frequency : 400Hz 0dB to 600ohm at an oscillation frequency of Frequency displacement : 22.5kHz...
- Page 19 MX-GA3V Arrangement of adjusting positions Cassette deck mechanism (Front side) PB Head REC/PB Head (Deck-A) (Deck-B) Head azimuth screw Head azimuth screw (Forward side) (Forward side) Head azimuth screw Head azimuth screw (Reverse side) (Reverse side) Tape recorder section Adjusting...
- Page 20 MX-GA3V Flow of functional operation until TOC read Check Point Slider turns REST Confirm that the voltage at the pin2 Play Key Power ON SW ON. of CN602 is "H"\"L"\"H". Automatic tuning of TE offset Check that the voltage at the...
- Page 21 MX-GA3V Maintenance of laser pickup Replacement of laser pickup (1) Cleaning the pick up lens Turn off the power switch and,disconnect the Before you replace the pick up, please try to clean power cord from the AC OUTLET. the lens with a alcohol soaked cotton swab.
- Page 22 MX-GA3V Description of major ICs VIDEO CD PROCESSOR CHIP PINOUT AUX4 LA10 AUX3 LA11 AUX2 AUX1 AUX0 LA12 PCLK LA13 PCLK2X LA14 CPUCLK LA15 HSYNC LA16 VSYNC Visba ES3880 LA17 YUV7 ACLK YUV6 AOUT/SEL_PLL0 YUV5 Video CD PC ATCLK YUV4...
- Page 23 MX-GA3V VIDEO CD COMPANION CHIP 1. Pin layout 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 DSC_D7 MIC2 HSYN_B MIC1...
- Page 24 MX-GA3V 2. Block diagram Name Number I/O Definition 1,25:26,31,72,75,77,91,100 Ground. 5,16,32,66,73,78,90 Voltage supply, 5 V. DSC_C Clock for programming to access internal registers. AUX0 Servo Forward or Control Pin. AUX1 Servo Reverse or Control Pin. AUX2 Servo LDON or Control Pin.
- Page 25 MX-GA3V BA15218/BA15218F(IC102/IC852): Dual operational amplifier 1. Terminal layout & block digram BA3837(IC103): MIC Mixer 1. Terminal layout & block digram 2. Pin function BU9253AS(IC851): Low pass filter & echo mixer 1. Terminal layout & block digram 2. Pin function 1-25...
- Page 26 MX-GA3V TA8189N(IC401): REC/PCB Amp. 1. Terminal layout 2. Block diagram 3. Pin function 1-26...
- Page 27 MX-GA3V TC74HC4094AP (IC402): 8-bit shift and store resister 1. Terminal layout 2. Block diagram 1-27...
- Page 28 MX-GA3V TDA7440D (IC101): Audio processor 1. Terminal layout 2. Block diagram 1-28...
- Page 29 MX-GA3V Wiring connection 1-29...
- Page 30 MX-GA3V VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan No.MB036 200311...
- Page 31 MX-GA3V SCHEMATIC DIAGRAMS COMPACT COMPONENT SYSTEM MX-GA3V CD-ROM No.SML200311 SP-MXGA3V CA-MXGA3V SP-MXGA3V Area Suffix US ......Singapore UX ..... Saudi Arabia Contents Block diagram Standard schematic diagrams Printed circuit boards 2-9~2-17 No.MB036SCH COPYRIGHT 2003 VICTOR COMPANY OF JAPAN, LTD. 2003/11...
- Page 32 MX-GA3V In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety.
- Page 33 MX-GA3V Block diagram FM/AM Ant. To Mic/Echo To Headphone MAIN JA302 CN805 CN101 Deck-A IC852 IC401 Q852 PB-Head BA15218F TA2104N TA8189 TC9257P Pre/ALC AM/FM-MPX Tape PB/Rec Tuner JA301 AUX In IC103 IC851 Q851 Q303 Q401,501 Deck-B BU9253FS BA3837 R/P-Head Bias OSC...
- Page 34 MX-GA3V MX-GA3V Standard schematic diagrams CD Servo control section...
- Page 35 MX-GA3V Power transformer section MIC AMP. and H.P section...
- Page 36 MX-GA3V MX-GA3V FL Display and CPU Control Section...
- Page 37 MX-GA3V Head AMP. audio, power AMP. and power Supply...
- Page 38 MX-GA3V MX-GA3V MPEG Section...
- Page 39 MX-GA3V Tuner Section...
- Page 40 MX-GA3V MX-GA3V Remote Control Section...
- Page 41 MX-GA3V Printed circuit boards Main /power-amp. circuit board(Top side )
- Page 42 MX-GA3V MX-GA3V Main / power-amp. circuit board(Bottom side) 2-10...
- Page 43 MX-GA3V CD Main. circuit board (Top side) 2-11...
- Page 44 MX-GA3V MX-GA3V CD Main. circuit board (Bottom side) 2-12...
- Page 45 MX-GA3V Display/Uicom control. circuit board (Top side) 2-13...
- Page 46 MX-GA3V MX-GA3V Display/Uicom control. circuit board (Bottom side) 2-14...
- Page 47 MX-GA3V Printed circuit boards MPEG. circuit board (Top side) 2-15...
- Page 48 MX-GA3V MX-GA3V Printed circuit boards MPEG. circuit board (Bottom side) 2-16...
- Page 49 MX-GA3V Tuner circuit board (Top side) 2-17...
- Page 50 MX-GA3V VICTOR COMPANY OF JAPAN, LIMITED AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1Chome,Ohwatari-machi,Maebashi-city,371-8543,Japan Printed in Japan No.MB036SCH 200311...
- Page 51 PARTS LIST [ MX-GA3] * All printed circuit boards and its assemblies are not available as service parts. Area suffix US ---------------------- Singapore UX ------------------- Saudi Arabia - Contents - 3- 2 Exploded view of general assembly and parts list (Block No.M1) 3- 5 CD changer mechanism assembly and parts list (Block No.MA) 3- 8...
- Page 52 Exploded view of general assmbly and parts list Block No. CD BOARD 36-C 36-D REPEAT BOARD 36-B 36-A PHONE BOARD SOUND MODE 24-C BOARD 24-B 24-A...
- Page 53 VIDEO BOARD TUNNER BOARD VFD BOARD CONTROL BOARD OARD MAIN BOARD P.T BARD...
- Page 54 PANEL CD BI1401001 AC CORD 87 BI109810060101 WINDOW DISPLAY BI1401131 AC CORD BI109830010101 KEY POWER A BI109820010101 KEY CONTROL BI109835010101 LOGO JVC BI109834010101 RING VOLUME BI109969010201 SPACER (x2) BI301781010101 MIRROR SHEET BI109804040201 PANEL FRONT BI301388010101 GEAR WHEET DAMP (x2) BI109840010101...
- Page 55 <MEMO>...
- Page 56 CD changer mechanism assembly and parts list Block No. BI681MXK30000...
- Page 58 CD changer mechanism Block No. [M][A][M][M] Symbol No. Part No. Part Name Description Local BI3199801000 GEAR PLATE BI3199802000 GUIDE PLATE (x2) BI3199804002 UP COVER PLATE BI3499801000 SHAFT PULLEY BI3499802000 SHAFT SWING BI3599801001 T/T SWITCH SPRI BI3599802000 SWING SPRING BI3599803000 SPRING BIG BI3599804000 SPRING SMALL...
- Page 59 Cassette mechanism assembly and parts list Block No. CMAT6Z223B L SIDE TYPE L SIDE R SIDE R SIDE TYPE Note: Parts listed on the Parts List below can be supplied. However, parts that are not listed below cannot be supplied individually but only by purchasing the whole Cassette Mechanism Assembly Unit.
- Page 60 Electrical parts list Main board Symbol No. Part No. Part Name Description Local Block No. [0][1][0][0] BI2SD2144SVP00 Q401 2SD2144S TRANSISTOR Symbol No. Part No. Part Name Description Local BI2SD2144SVP00 Q402 2SD2144S TRANSISTOR BI2KTC3199GP00 IC102 BA15218F BI113241 Q403 KTC3199GR TRANSISTOR IC103 TDA7440D...
- Page 61 Symbol No. Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local BI31N5393GWN00 BI11TT80H3 T&TWIRE 80MM RED D905 1N5393 SI DIODE BI11TT80H4 T&TWIRE 80MM RED D906 1N4001 FR DIODE BI31N40011 BI11TT80H5 T&TWIRE 80MM RED BI3MTZJ33CM000 BI11TT80H6...
- Page 62 Symbol No. Symbol No. Part No. Part Name Description Local Part No. Part Name Description Local BI11AT270B0 BLACK WIRE 270MM BI2DTC114YSP00 Q701 DTC114YS TRANSISTOR BI2KRA107MP000 Q702 KRA107M DIGI TRANSISTOR VCD board BI2KRA107MP000 Q703 KRA107M DIGI TRANSISTOR Block No. [0][4][0][0] Q704 KTC3195Y TRANSISTOR...
- Page 63 Symbol No. Part No. Part Name Description Local D607 1SS133 FR DIODE BI31SS133M0007 D609 IN4001 BI31N40011 L601 BI26100000KM002 FIXED INDUCTOR 10UH/26MM L602 BI26100000KN008 FIXED INDUCTOR 10UH4+/-10 L603 BI26100000KM002 FIXED INDUCTOR 10UH/26MM CN601 BI12S160031 CONNECTOR 16P/1.0MM CN602 BI23S600961 CONNECTOR 6P/PITCH2.0MM CN603 BI12S30030 CONNECTOR...
- Page 64 Packing materials and accessories parts list Block No. ACCESSORY Packing tape FRONT 3-14...
- Page 65 Packing and accessories Block No. [M][3][M][M] Symbol No. Part No. Part Name Description Local BI600GA3V080 REMOTE CONTROL ------------ BATTERY (x2) BIAN01012 ANT WIRE BIAN01031 AM LOOP ANT LVT1078- BI4412151U INSTRUCTIONS 001A LVT1078- BI4412641U INSTRUCTIONS 002A BI4033111 CAUTION SHEET BI11F2000SA01 VIDEO LINER CAR ...