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JVC AV-15LCG Service Manual
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JVC AV-15LCG Service Manual

JVC AV-15LCG Service Manual

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Summary of Contents for JVC AV-15LCG

  • Page 1 $9/&* $9/&+ $9/&6 6(59,&(0$18$/ /&'7(/(9,6,21 $9/&* $9/&* $ $9/&+ $9/&6 &217(176 T 63(&,),&$7,216 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]  T 0$,1',))(5(1&(/,67 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]  T 6$)(7<35(&$87,216]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]  T 63(&,),&6(59,&(,16758&7,216 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]  T )81&7,216]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]  T 7(&+1,&$/,1)250$7,21]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]  T 6(59,&($'-8670(176 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]  T 7528%/(6+227,1* ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]  T 3$576/,67]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]] ...
  • Page 2 $9/&* $9/&+ $9/&6 63(&,),&$7,216 ,WHPV &RQWHQWV 'LPHQVLRQV :G+G' .Pu.Pu.P 0DVV NJ  :LWKRXW'HVNWRSVWDQG 795) %URDG.DVWLQJ 6\VWHP %*'.,0 &RORUV\VWHP 3$/6(&$0176&  795H.HLYLQJ&KDQQHOVDQG)UHTXHQ.\ 9+)(¤( 8+)(¤( &$796¤6 +<3(5EDQG6–6 3URJUDP6HOH.WLRQ&KDQQHO &KDQQHOV 0XOWLVRXQG6\VWHP 1,&$0>8.V\VWHP@ $>*HUPDQ\V\VWHP@ 7HOHWH[W6\VWHP )/2) )DVWH[W   >$9/&6RQO\@ 723  >$9/&6RQO\@ 3RZHU,QSXW $&9–9+]+]  $&DGDSWRULQSXW '&9$  /&'WHOHYLVLRQLQSXW 3RZHU&RQVXPSWLRQ 0D[LPXP: RSHUDWLQJ 6WDQGE\: DW$&9 ...

  • Page 3: Safety Precautions

    AV-15LCG AV-15LCH AV-15LCS SAFETY PRECAUTIONS IMPORTANT SAFETY NOTICE Many electrical and mechanical parts in this chassis have special safety-related characteristics. These parts are identified by the Schematic Diagram and Replacement Parts List. It is essential that these special safety parts should be replaced with the same components as recommended in this manual to prevent X-RADIATION, Shock, Fire, or other Hazards.
  • Page 4 AV-15LCG AV-15LCH AV-15LCS WARNING FOR THE SAFETY-RELATED COMPONENT. WARNING BE CAREFUL ELECTRIC SHOCK ! • There are some special components used in LCD monitor that are important for safety. These parts are • If you want to replace with the new backlight (CCFL) or...
  • Page 5 AV-15LCG AV-15LCH AV-15LCS SPECIFIC SERVICE INSTRUCTIONS CAUTION: Before servicing receivers covered by this service transistors and semicounductor "chip" components. The manual and its supplements and addenda, read and follow the following techniques should be used to help reduce the SAFETY PRECAUTIONS on page 3 of this publication.
  • Page 6 AV-15LCG AV-15LCH AV-15LCS c. Qulckly move the soldering iron tip to the junction of the Fuse and Conventional Resistor component lead and the printed circuit foil, and hold it Removal/Replacement there only until the solder flows onto and around both the 1.

  • Page 7: Remote Control Handset

    AV-15LCG AV-15LCH AV-15LCS FUNCTIONS All the functions can be controlled with the remote control handset. Some functions can also be adjusted with the buttons on the front panel of the set. Remote control handset Before you use the remote control handset, please install the bat- teries.

  • Page 8: Battery Installation

    AV-15LCG AV-15LCH AV-15LCS 8. MUTING switches the sound on or off. 9. TV/AV/PC selects TV, DVD, AV, SAV or PC monitor mode. clears the menu from the screen. switches the set on from standby. 10. DISPLAY displays the current mode.

  • Page 9: Power/Standby Indicator

    AV-15LCG AV-15LCH AV-15LCS Front panel You can use the front panel buttons softly touching them instead of pressing. TV/AV/PC MENU Main Power 1. MAIN POWER (POWER |/O ) 8. POWER/STANDBY INDICATOR switches the set on (|) or off (O). illuminates brightly when the set is in standby mode.

  • Page 10: Technical Information

    AV-15LCG AV-15LCH AV-15LCS TECHNICAL INFORMATION WHOLE BLOCK DIAGRAM CVBS OUT Ext_Video Ext_Y/C CVBS Tuner & IF Back Light Inverter Assy - TAUC-S120D Y / Cb / Cr - TAFC-M130D - TAFC-Z140D For TV Scart RGB . Contrast . Brightness . Color Video .

  • Page 11: Pin Layout

    AV-15LCG AV-15LCH AV-15LCS 1. V ideo Processing (3) RGB Processing 1-1. Features - Programmable RGB matrix - Digital color bus interface (1) Video Decoding - Additional analog RGB/Fast blank input - 4 Composite inputs, 1 S-VHS input - Half contrast switch - Composite video &...

  • Page 12: Block Diagram

    AV-15LCG AV-15LCH AV-15LCS 1-3. Block Diagram No.51932...

  • Page 13: Pin Description

    AV-15LCG AV-15LCH AV-15LCS 1-4. Pin Description Pin No. Pin Name Type Conneciton(if not used) Short Description B1/CB1IN VREF Blue1/Cb1 Analog Component Input G1/Y1IN VREF Green1/Y1 Analog Component Input R1/CR1IN VREF Red1/Cr1 Analog Component Input B2/CB2IN VREF Blue2/Cb2 Analog Component Input...
  • Page 14 AV-15LCG AV-15LCH AV-15LCS Pin No. Pin Name Type Conneciton(if not used) Short Description Picture Bus Chroma Picture Bus Chroma Picture Bus Chroma V SUPC SUPPLYD Supply Voltage, Chroma Output Circuitry GND C SUPPLYD Ground, Chroma Output Circuitry Picture Bus Chroma...

  • Page 15: Audio Processing

    AV-15LCG AV-15LCH AV-15LCS 2. Audio Processing 1-1. Features – Automatic switching from NICAM to FM/AM or vice versa – AVC: Automatic Volume Correction – Improved NICAM synchronization algorithm – Subwoofer Output – Improved carrier mute algorithm – 5-band graphic equalizer (as in MSP 3400C) –...
  • Page 16 AV-15LCG AV-15LCH AV-15LCS 2-2. Pin Description Pin No. Pin Name Type Conneciton(if not used) Short Description Not connected I2C_CL IN/OUT I2C clock I2C_DA IN/OUT I2C data I2C_CL IN/OUT I2S clock I2S_WS IN/OUT I2S word strobe I2S_DA_OUT I2S data output I2S_DA_IN1...
  • Page 17 AV-15LCG AV-15LCH AV-15LCS Pin No. Pin Name Type Conneciton(if not used) Short Description Not connected AHVSS Analog gnd AHVSS Analog gnd AGNDC Analog reference volt high volt part Not connected SC4 IN L Scart input 4 in L SC4 IN R...
  • Page 18 AV-15LCG AV-15LCH AV-15LCS 3. MX88L284(LCD Monitor Controller) 3-1. Features · Support H/V Sync. Polarity and pulse width information · Converts NTSC/PAL and PC video signal into flat panel for mode detection · Provide Full frame buffer, reduce frame buffer · Support two types of CPU interface (direct and serial bus) (w/ compression) and frame buffer less optional architecture.
  • Page 19 AV-15LCG AV-15LCH AV-15LCS 3-4. Pin Layout GOUT1 GNDP GNDP GOUT0 MD15 LDTG MD14 LVSYNC MD13 LHSYNC MD12 MD11 MD10 VDDP GNDP GNDP VDDP MX88L284 GNDP CPUA15/BCS# VDDP GNDP LCKA TMCLK LCKB RST# GNDP GPIOA0 GPIOA1 VDDP GPIOA2 GPIOA3 GPIOA4 GPIOA5...
  • Page 20 AV-15LCG AV-15LCH AV-15LCS 4. AD9884A(Analog Flat Panel Interface) 4-3. Block Diagram 4-1. Features · 140 MSPS Maximum Conversion Rate · 500 MHz Analog Bandwidth AD9884A · 0.5 V to 1.0 V Analog Input Range OUTA CLAMP · 400 ps p-p PLL Clock Jitter OUTB ·...
  • Page 21 AV-15LCG AV-15LCH AV-15LCS 4-5. Pin Description Signal Type Name Function Value Package Pin Inputs Analog Input for RED Channel 0.5V to 1.0V FS Analog Input for GREEN Channel 0.5V to 1.0V FS Analog Input for BLUE Channel 0.5V to 1.0V FS...

  • Page 22: Service Adjustments

    AV-15LCG AV-15LCH AV-15LCS SERVICE ADJUSTMENTS 1. Application Object Error This instruction is for the application to the LCD TV. ± 0.03 Color Coordinates(x,y) 0.63 0.34 0.30 0.60 0.14 0.10 AD9884 0x02 0x03 0x04 Register 2. Notes (1) This set uses an adapter, so connect the adapter and the set correctly before adjustment.
  • Page 23 AV-15LCG AV-15LCH AV-15LCS 3-4. T iming Chart of Possible Input PC Mode Timing of Mode Table * H[dot]/V[line] Mode VGA-60 VGA-67 VGA-72 VGA-75 VGA-85 TEXT-70 SVGA-56 SVGA-60 SVGA-72 H_Total 1024 1056 1040 H_Display H_Blanking H_Sync H Polarity NEG. NEG. NEG.

  • Page 24: Troubleshooting

    AV-15LCG AV-15LCH AV-15LCS TROUBLESHOOTING 1. General Features Symptom Cause Check Point Soft touch doesn’t Defective speaker wire 1) Make some space between the speaker wire and function properly and inverter wire the Soft touch Board by sticking the speaker wire to the guide hole of the cabinet.
  • Page 25 $9/&* $9/&+ $9/&6 3$576/,67 &$87,21 T  7KHSDUWVLGHQWLILHGE\WKH V\PERODUHLPSRUWDQWIRUWKHVDIHW\:KHQHYHUUHSOD.LQJWKHVHSDUWVEHVXUHWRXVHVSH.LILHGRQHVWRVH.XUH WKHVDIHW\ T  7KHSDUWVQRWLQGL.DWHGLQWKLV3DUWV/LVWDQGWKRVHZKL.KDUHILOOHGZLWKOLQHV øø  LQWKH3DUWV1R.ROXPQVZLOOQRWEHVXSSOLHG T  3:%RDUG$VV \ZLOOQRWEHVXSSOLHGEXWWKRVHZKL.KDUHILOOHGZLWKWKH3DUWV1RLQWKH3DUWV1R.ROXPQVZLOOEHVXSSOLHG $%%5(9,$7,216 )RUUHVLVWRUVDQG.DSD.LWRUVWKH.KDUD.WHUVDWQGDQGUG GLJLWLQWKHSDUWVQXPEHUPHDQVDVIROORZV 5HVLVWRUV &DSD.LWRUV &DUERQILOP && &HUDPL. 0HWDOR[LGHILOP &; &HUDPL. 0HWDOILOP &. &HUDPL. )XVLEOH &1 &HUDPL. &4 3RO\HVWHU &( (OH.WURO\WL. &217(176 Õ 86,1*3:%2$5' ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]  Õ (;3/2'('9,(:3$576/,67]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ...

  • Page 26: Exploded View Parts List

    DESCRIPTION LG-6304VT1511A LCD,151X3 B3AP 15.1” LG-6400VA0017A SPEAKER,GENERAL T401SX-095K14 8 OHM LG-4950V00010A METAL,HOLDER SPK LG-3091V00339C CABINET ASSY JVC LG-5020V00513A BUTTON,CONTROL 8KEY LG-3809V00168T BACK COVER ASSY JVC LG-4950V00012A METAL STAND ASSY LG-4950V00006A METAL,STAND LG-4930V00103B HOLDER,STAND LG-3550V00081A COVER,BASE LG-3141VMN739B CHASSIS ASSY,MAIN LG-4950V00008B METAL,MAIN FRAME...

  • Page 27: Exploded View

    AV-15LCG AV-15LCH AV-15LCS EXPLODED VIEW P801 No.51932...

  • Page 28: Printed Wiring Board Parts List

    AV-15LCG AV-15LCH AV-15LCS PRINTED WIRING BOARD PARTS LIST LOCA. NO PART NO DESCRIPTION LOCA. NO PART NO DESCRIPTION ZD412 LG-0DZRM00178A DIODE,ZENERS UDZS TE-17 5.1B ROHM R/TP SMD ZD413 LG-0DZRM00178A DIODE,ZENERS UDZS TE-17 5.1B ROHM R/TP SMD LG-0IZZVC0009C IC,SDA555X 52 ST U-COM LT-15A11...
  • Page 29 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 30 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 31 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 32 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 33 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 34 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 35 AV-15LCG AV-15LCH AV-15LCS For Capacitor & Resistors, the CC, CX, CK, CN : Ceramic RD : Carbon Film charactors at 2nd and 3rd digit CQ : Polyestor RS : Metal Oxide Film in the P/No. means as follows; CE : Electrolytic...
  • Page 36 RESONATOR,CRYSTAL SX-1SMD SUNNY RADIAL 14.318MHZ X502 LG-166-E02F RESONATOR,CRYSTAL CSBLA500KECZF09-B0 CSB500F9 MU X601 LG-156-A02M RESONATOR,CRYSTAL HC49U KJE RADIAL 18.432MHZ 30P ACCESSORIES LG-3828VA0237W MANUAL,OWNERS JVC/15LCG/-A JVC AR/EN/ LG-3828VA0237V MANUAL,OWNERS JVC/15LCH/S LG-3828VA0237T MANUAL,OWNERS JVC EN LG-6710V00068D REMOTE CONTROLLER W/0 TXT LJ-15A11 #17/28 LG-6710V00068E REMOTE CONTROLLER W/TXT LJ-15A11...

  • Page 37: Packing Parts List

    DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION DESCRIPTION REMARKS REMARKS REMARKS REMARKS REMARKS LG-3920V00196A CUSHON LG-6710V00068D REMOTE CONTROL UNIT AV-15LCG, AV-15LCG/-A, AV-15LCH LG-6710V00068E REMOTE CONTROL UNIT AV-15LCS LG-6634VBW002M AC ADAPTOR LG-3550V00083E STAND ASS’Y COVER LG-6910VA1001A BATTERY LG-6410VEH003A POWER CORD AV-15LCG, AV-15LCS LG-6410VUH003A POWER CORD...
  • Page 38 AV-15LCG AV-15LCH AV-15LCS HPC LABEL No.51932...
  • Page 39 $9/&* $9/&+ $9/&6 1R...
  • Page 40 9,&725&203$1<2)-$3$1/,0,7(' +20($91(7:25.%86,1(6681,7  0RUL\DWRZQ.DQDJDZDNX<RNRKDPD.LW\.DQDJDZDSUHIH.WXUH-DSDQ $9/&*$9/&*$ 3ULQWHGLQ-DSDQ $9/&+ 93 $9/&6...
  • Page 41 $9/&* $9/&+ $9/&6 6&+(0$7,&',$*5$06 /&'7(/(9,6,21 $9/&* $9/&* $ $9/&+ $9/&6 &'5201R60/ &217(176 T 127(2186,1*&,5&8,7',$*5$06 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]  T &,5&8,7',$*5$0 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]  T %/2&.',$*5$0 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]  T 3$77(51',$*5$06 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]  1R &23<5,*+7‹9,&725&203$1<2)-$3$1/7'  0DU...
  • Page 43 $9/&* $9/&+ $9/&6 $9/&*$9/&* $9/&+$9/&6 $ 67$1'$5'&,5&8,7',$*5$0 &217(176 Õ 127(2186,1*&,5&8,7',$*5$06 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]  Õ &,5&8,7',$*5$0 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]  Õ %/2&.',$*5$0 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]  Õ 3:%3$77(516 ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]]] ]]]]]]]]]]]]]]]]]]]  3:%©VQDPH 3:%$66©<1R &LU.XLWGLDJUDP 3:%SDWWHUQ /*901% 6,*1$/3:%$66 < /*960& 781(53:%$66©< /*960$ &21752/3:%$66 <...
  • Page 44 $9/&* $9/&+ $9/&6 0(02! 1R...
  • Page 45 AV-15LCG AV-15LCG AV-15LCG AV-15LCH AV-15LCH AV-15LCH AV-15LCS AV-15LCS AV-15LCS CIRCUIT DIAGRAM No.51932 No.51932 No.51932...
  • Page 46 AV-15LCG AV-15LCG AV-15LCG AV-15LCH AV-15LCH AV-15LCH AV-15LCS AV-15LCS AV-15LCS BLOCK DIAGRAM MAIN PWB PATTERN CVBS OUT Ext_Video Ext_Y/C MAIN(TOP) CVBS Tuner & IF Back Light Inverter Assy - TAUC-S120D Y / Cb / Cr - TAFC-M130D - TAFC-Z140D For TV Scart RGB .
  • Page 48 9,&725&203$1<2)-$3$1/,0,7(' +20($91(7:25.%86,1(6681,7  0RUL\DWRZQ.DQDJDZDNX<RNRKDPD.LW\.DQDJDZDSUHIH.WXUH-DSDQ $9/&*$9/&*$ 3ULQWHGLQ-DSDQ $9/&+ 93 $9/&6...

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