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Konka KLC-TM1508 Service Manual
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Konka KLC-TM1508 Service Manual

Konka KLC-TM1508 Service Manual

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Elenberg CTV-1540, Elenberg CTV-2065
LCD TV SERVICE MANUAL
Model list
KLC-TM1508
KLC-TM2018
KONKA GROUP CO,LTD.
Digital Flat Display Division

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Summary of Contents for Konka KLC-TM1508

  • Page 1 Elenberg CTV-1540, Elenberg CTV-2065 LCD TV SERVICE MANUAL Model list KLC-TM1508 KLC-TM2018 KONKA GROUP CO,LTD. Digital Flat Display Division...

  • Page 2: Important Service Safety Information

    IMPORTANT SERVICE SAFETY INFORMATION Operating the receiver outside of its cabinet or with its back removed involves a shock hazard. Work on these models should only be performed by those who are thoroughly familiar with precautions necessary when working on high voltage equipment.
  • Page 3 9. Before removing the anode cap, discharge eletricity because it contains high voltage. A. SPECIFICATION System : Colour System:PAL,SECAM Sound System:DK/BG/I/M Audio output power 10%THD 1W X 2KLC-TM1508 10%THD 2W X 2KLC-TM2018 Antenna Impedance 75(Unbalance) Power Consumption 48WKLC-TM1508 60WKLC-TM2018 Power Supply :...
  • Page 4 This test manual is applicable for KLC-TM1508. 1.2 Test notes 1.2.1 Please follow the pointed test steps and choose the proper test equipment to conduct adjustment, otherwise good effect of TV set could not be obtained. Pointed bias voltage value should be ensured during test to get satisfied test result.
  • Page 5 4.1.1.2 For MP1018 project,the outputs have the capacitance divider ,see figure as below,when we measure the output voltage,we may measure the parallel connection voltage value of the C722 and C730 or C724 and C731,then according to theformula Vout1=Vc1*(C722//C730)/C721,Vout2=Vc2*(C724//C731)/C723,we m ay get the output voltage value(Vc1,Vc2 means the parallel connection voltage value of the C722 and C730 or C724 and C731).
  • Page 6 4.1.1.4 Force 0-5V voltage to the input port that is the third pin of XS701. Confirm if it will shut down at 0V and start at 5V. 4.2 Digital signal part KLC-TM1508 start order Turn on the N404 RESET and...
  • Page 7 4.3.1.4 Connect DC Voltmeter “+” to Pin 8 of N1000, - to RF TUNER cabinet. 4.3.1.5 Connect oscilloscope probe + to Pin 10 of XP6010, - to RF TUNER cabinet, then set oscilloscope to 50mV/div Time/div TV-H( s), and set to TV-H simultaneously.
  • Page 8 4.2.2.1 Check if connections connect well, start automatic searching. 4.2.2.2 Press PROG. / button to display the channel you hav e received on the scre en after automatic searching finishing. 4.2.2.3 Adjust VR1000 with small screwdriver so that DC Voltmeter is within 2.0V – 2.5V(maximum),then reverse VR1000 and just make c onfusi onal of noi se disappear on the picture.
  • Page 9 3 Test equipment 1) Computer 2) Oscilloscope100MHz 3)Multimeter (VICTOR VC9801) 4)DC Voltmeter 5)Oscilloscope Tektronix2232 6)Cement Resistance 7)Test Clamp 8TV signal generator 4 .T est i tem a nd met ho d 4.1 Power Supply Board 4.1.1 The input and output characteristic test of power 4.1.2 Intention of test: Check input and output to find if short circuit.
  • Page 10 4.2.10 Test the rated load output voltage Turn off the power then connecting the load on output and turn on the power to test the output voltage by multimeter Rated load output voltage / current are as follows: Number Item Current standard Voltage standard V12 s rated load...
  • Page 11 4.3.2 Verify the state of TV set Please switch the TV on by “Power on/off” switch,then verify the LED color of touch button.If it is red(standby state),the back-end power has been shut off(the voltage of N802 No.5 pin is 0V),the supply power for IC-chip has been shut off except N803 normally working.Please test the voltage of D616 is 5V to verif y the power of N803 no rmal on standby state.
  • Page 12 4.3.6 Check if the voltage of every power supply is normal. 4.3.7 Check if the cr ystal oscillator Z4. 1(14.318MHz)oscillate or not, and oscilla te frequency is right or not. 4.3.8 Back light control signal (BKLON) of PIN 3 of XS512 has high level (above 3.5V) or not, if not, check whether fault solder ed or short circuit h appened to V507, R559 , R560,R561 4.3.9 If back light lamp is on while there is no display,check N407’s reset circuit...
  • Page 13 DEN Waveform DHS Waveform...
  • Page 14 DVS Waveform 4.3.10 If only one channel has problem check the signal of this channel normal or not.AV1,AV2,S-Video,Y,Cb,Cr are inputted from analog signal board to digital signal board RGB Y Pb Pr(digital signal board)are input N407 by N603.Using oscilloscope to check ICN1003’s output signal TV-Y,TV-Cb,TV-Cr,TV-HS,TV-VS(1 3 5 7 8pin of XP1005),to verify the waveform is right or not.If not ,check whether fault soldered or short circuit are happened Else ,check the 5V supply voltage of N601,N603 on digital...
  • Page 15 CVBS color bar Wave form TV_Y Waveform XP 10 05 ’s 1 Pin...
  • Page 16 TV_ Cb Waveform XP1005’s 3 Pin T V_ Cr Waveform X P10 05 ’s 5 Pin...
  • Page 17 TV _H s Waveform X P10 05 ’s 7 Pin T V_V s Wavrform XP1005’s 6 Pin 4.4 Analog signal board 4.4.1 Analog signal board power part Analog signal board is supplied by 12V transformed to 5V by N1101,N1815 After...
  • Page 18 connecting the power ,check the voltage of N1101’s 2 pin with multimeter to see if voltage of C1809 ‘s anode is right(about 5V) or not This is the back-end IC’s normal power supply. 4.4.2 IF channel AFC adjustment on analog signal board Input a 38MHz IF Signal generated from TV signal generator to RF TUNER according IF cable whose one side to 11 pin of RF TUNER and the other to 3 pin of RF TUNER(GND).
  • Page 19 4.4.8 Check if connections connect well, start automatic searching. 4.4.9 Press PROG. -/. button to display the channel you have received on the screen after automatic searching finishing. 4.4.10 Press factory menu button to display factory menu on TV and select TB1274 ,press PROG +/- button to select the tda9885 AGC item of sub-menu ,then press volume +/- but ton to adjust the val ue until the snows ar e disappear The value after adjusting is about 12-16 and the tuner voltage of first pin is about 2.0...

  • Page 20: Troubleshooting

    Trouble Shooting Key IC listKLC-TM1508 Item Type Maker Package Circuit No. Qty. PQ05RD11 Sharp N1001 TDA1517P PHILIPS HDIP18 N2001 24LC16B/SN MICROCHIP SOIC-8 N309 AT24C16AN-10SI-2.7 ATMEL 74LVC541APW PHILIPS TSSOP-20 N514 74LVC32A D PHILIPS SO-14 N608 AM29LV800DT-70EC-AMD/# TSOP-48 N307 MX26LV800BTC-55-3/# MXIC 1117-1.8V...
  • Page 21 PIC12F629 MICROCHIP SOIC-8 N803 74LVC273A PHILIPS TSSOP-20 N509 AM29LV800DT-70EC-AMD/# TSOP-48 N305 AM29LV800BB-90EI-AMD/# 1117-1.8V 1117 serial SOT223 N813*N812 1117-3.3V 1117 serial SOT223 N810*N811 MP1410ES-LF-SOIC-8-MPS SOIC-8 N1815* N801 TB1274AF TOSHIBA QFP48-10 N1003 14-0.8 SOP16-P- TC90A69F TOSHIBA 300-1.27 N1004 TDA9885T PHILIPS SO24 N1006 MSP3463G MICRONAS PMQFP64...
  • Page 24 3.3VADC V33D KLC-TM1508 Digital L306 3.3VADC V33A Board schematic circuit C306 C302 C332 C313 C328 C305 C321 C327 C326 C323 C304 diagram 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF C334 C333 V33A R305 100 0.1uF 22uF_10V_T...
  • Page 25 R876 R877 DRE[0..7] LCDON VPANEL XS504 LVDS L516 DRE0 DRE1 C557 DRE2 TXE3P TXE3M C570 DRE3 TXE0P TXECP TXECM OUT0 0.1uF 100uF_6V_T DRE4 TXE0M TXE2P TXE2M OUT0 DRE5 TXE1P TXE1M DRE6 TXE1P TXE0P TXE0M OUT1 DRE7 TXE1M OUT1 DGE[0..7] TXO3P TXO3M DGE0 TXE2P...
  • Page 26 R627* D609 OPEN DIODE R628* OPEN V_DDC_5V D610 DIODE R632* N605* R641 R9U2 VCLK C675* 2.2K DDC_CLK 0.1uF C693 DDC_DAT 0.1uF 74LVC32 R635 N608A R629* R630* 24LC21A C682 R634 56pF L618 AVSYNC VSYNC1 VSYNCRTN D605* D606* BAV99L BAV99L L617 C678 56pF HSYNC1 HSYNCRTN U1C1...
  • Page 27 ROMOEn R345 N307 ROMWEn R347 C391 0.1uF RESETn C388 100K D[0..15] D[0..15] 0.1uF R349 U3WPn BYTE 100K R346 C390 NMI Pushbutton 100uF XS310 GND1 GND2 R356 R351 N309 C383 C397 Flash_8M 0.1uF 3.3K 0.1uF XS309 C396 0.1uF FCEn R343 3.3K 24C16 NVRAM R352...
  • Page 28 CS0n R561 R554 R566 R567 R569 R574 R568 R563 R564 R5053 R562 XS611 N514 8 HEADER D[0..15] RP501 33x4 LED1 KEY_0 LED2 KEY_1 KEY_2 KEY_3 C508 KEY_4 KEY_5 XS605 0.1uF KEY_6 RP502 R665 33x4 4.7K 74LVC541A_PW Input Buffer IRRCVR PANEL-LED1(RED) PANEL-LED2(GRE) Q502 R558...
  • Page 29 R422* 100_NS(OPEN) R424 R431 R433 DCLK 3.3K V33 V33 DCLK A1..19] R420* 33 DCLKn DCLKNEG C473 R417 33 R28C11 3.9nF R416 33 DRE[0..7] TESTEN TESTEN R418 R419 R41533 R450 R448 C474 3.3K 3.3K RP405 33x4 3.3K 3.3K 39nF DRE0 GFILT DRE1 FILTER DRE2...
  • Page 30 PWMOUT LCDON Q506 BKLON BC847(SOT-23) R583 R581 R579 C563 C519 0.1uF DBO[0..7] 0.1uF DGO[0..7] R580 DRO[0..7] 4.7K Q504 R582 BC847(SOT-23) DRE[0..7] BRIGHT R588 V33PENAL R584 C562 DGE[0..7] ON/OFF L828 0.1uF R572 DBE[0..7] R582 XS514 D2006-6A R578 C513 R573 U805 BA033FP(TO252-3) Display Output L816 0.1uF...
  • Page 31 KLC-TM1508 Analog Board schematic circuit diagram...
  • Page 32 KLC-TM1508 inverter•PCB P/N•35007175• schematic circuit R720 300k R721 56k XS702 C709 V701A 0.47uF Comp R709 1K C721 C710 SI9926BDY 22pF/3kV DrvL R714 22nF XS703 C716 1uF/25V T701 OutL R701 100k V701B C736 1uF/25V D703 1N4148 C714 C722 C730 1uF/25v EPC-19 4.7nF...
  • Page 33 KLC-TM1508 Digital Board Top layer...
  • Page 34 KLC-TM1508 Digital Board Bottom layer...
  • Page 35 KLC-TM1508 Analog Board Toplayer...
  • Page 36 KLC-TM1508 Analog Board Bottomlayer...

  • Page 37: Specification

    KLC-TM1508 Emax inverter•P/N•34002054• CUSTOMER: Specification LCD PANEL DC TO AC INVERTER PLCD0317403 REV:0 APR. / 24 / 2003 DIMENSION MEASURE:(UNIT:mm) 10MAX 2.0MAX £X 4.0* Tolerance: ¡Ó0.15mm...

  • Page 38: Test Circuit

    Emax CUSTOMER: Specification LCD PANEL DC TO AC INVERTER APR. / 24 / 2003 PLCD0317403 REV:0 TEST CIRCUIT:...

  • Page 39: Layout Drawing

    Emax CUSTOMER: Specification LCD PANEL DC TO AC INVERTER APR. / 24 / 2003 PLCD0317403 REV:0 LAYOUT DRAWING:...
  • Page 40 Emax CUSTOMER: ____________________________________ Specification Part Name: Page: LCD PANEL DC TO AC INVERTER Model No: PLCD0317403 Date: APR. 2003 MAKER UL No. 22uF/16V(FP1451 or TL1451 or TEAPO,SANYO,HER 2.2uF/50V(BA9741 MEI,FUHJYYU AT1741S) C5,C9,C14,C15,C1 6,C17,C18,C21,C25 104/50V,0603 TDK,PHILIPS ,C32,C33,C35,C37 ARCOTRONICS,TAI C3,C4 154/250V YANG(7Q)(7C) C6,C10,C27,C28 105/16V,0603 TDK,PHILIPS C34,C36...
  • Page 41 Emax CUSTOMER: ____________________________________ Specification Part Name: Page: LCD PANEL DC TO AC INVERTER Model No: PLCD0317403 Date: 2003 MAKER UL No. YAGEO,SYNTON-TECH, R32,R33 1.2K ,0805 LIKET,EVER OHMS,TA-1 YAGEO,SYNTON-TECH, R41,R42 5.1K ,0603, 1% LIKET,EVER OHMS,TA-1 YAGEO,SYNTON-TECH, R25,R27 30K ,0603 LIKET,EVER OHMS,TA-1 YAGEO,SYNTON-TECH, R54,R58 47K ,0603...
  • Page 42 KLC-TM1508 P/N•34002054 PLCD0317403 EDI0005 3.0A/125V NDS9435A 150uF/25V 22P/3KV EST0015 SM02B-BHSS-1-TB 910R 100K 1.2K 2SC4672 SK24 W20R-6PIN-90 SST2907A 154/250V SST2222A 22P/3KV 3.6K SM02B-BHSS-1-TB RK7002 2SC4672 R48 910R 560R SST2907A 104/50V RLZ13V 1N4148 R511M Q15 SST2222A 510R 5.1M 1N4148 104/50V 104/50V ELF0002...
  • Page 43 D 6 1 3 L 6 1 0 KLC-TM2018 Digital C 6 0 1 N 6 2 9A N 6 2 9 B 1 N 4 1 48 0 . 1 u F N 6 2 9 C Schematic A V S Y N C N 6 0 2 7 4 H C 4 0 5 2D V G A ( S O G ) NO_USED...
  • Page 44 R O M O E n N 3 0 5 R O M W E n R 3 6 2 R 3 6 3 R O M W E n F V P P R E S E Tn D [ 1 5 : 0] D [ 1 5 : 0 ] R 3 6 1 F W P n...
  • Page 45 C 4 4 8 R 4 2 5 1 0 0 _ N C D C L K D E N D H S R 4 2 4 R 4 2 6 R 4 2 3 4 7 N C 0 .
  • Page 46 R D n C S 0 n D 6 1 5 C H+ C H- M E NU A V /TV D 6 1 4 B A V 99L B A V 99L D [ 1 5 : 8] C 5 4 8 0 .
  • Page 47 V O O V N N V P A N EL D C L K CLKIN D R E [ 7 : 0 ] D R E 0 L514 F B N C TXIN0 D R E 1 TXIN1 D R E 2 TXIN2 X S 5 0 6 NC D R E 3...
  • Page 48 D R E [ 7 : 0 ] D G E [ 7 : 0 ] D B E [ 7 : 0] Display Output V P E NAL N 5 0 3 L502 FB XS504 +12V R 5 5 3 R 5 6 6 C 5 8 6 C 5 8 8...
  • Page 49 KLC-TM2018 Analog Board Schematic 5V2-CD N1004 TC90A69F 5V2-CD C1081 0.01uF 0.01uF C1077 BIAS L1012 R1082 100uH 0.01uF COMB_C R1077 C1078 C1073 COUT Comb_C_out C1076 10uF/16V V1008 100uF/10V CVBS_OUT BC847 VDD1 VSS1 CVBS_OUT R1083 0.01uF C1074 COMB_Y C1079 TESTI1 YOUT Comb_Y_out 0.1uF C1082 0.01uF...
  • Page 50 R1105 100 1/16W R2207 R1107 20K NC 1K 1/16W D1101 MA858 C2005 C2210 C2211 SAW_SW 10nF 390p 10nF L1101 R1011 Z2001 C2212 M3953M 470n R1100 R1102 R1104 24K 1/16W V1102 24K 1/16W C1101 BC847 TV_SIF TV_SIF 1000p V1101 BC847 R2216 R1103 2.2K R1101...
  • Page 51 TV_Y TV_CVBS_OUT TV_Cb TV_CVBS_OUT TV_CVBS_OUT TV_CVBS_OUT TV_OUT XS1005 R1038 TV_Cr CONNECTOR-9 0.1uF CVBS/Y_2 C1037 FSC_OUT TV_VS FSC_OUT TV_Hs 0.01uF C1038 SVIDEO_C3 0.1uF CVBS/Y_3 C1039 R1041 C1244 0.1uF XS1007 C1040 CVBS/Y_1 82pF CONNECTOR-7 C1042 5V2-CD L1208 100uH 0.01uF AV/TV C1043 R1040 N1003 0.47uF/50V R1039...
  • Page 52 5V2-VCHIP C1142 R1111 R1113 0.1uF R1108 V1012 CVBS_OUT BC847 L1019 CVBS_OUT C1141 47uH R1115 0.1uF 5V2-VCHIP R1112 R1114 N1008 C1144 + C1145 0.1uF 47uF/10V Z86229 DEC_VIN VideoIN C1143 SerialEN TV-VS R1109 TV-VS VIN/INTRO OSD_R R1116 2.2K TEXT_R TEXT_R TV-HS R1110 TV-HS OSD_G R1121...
  • Page 53 R2000 PC_LIN C2060 0.47u R2001 PC_RIN C2061 0.47u R2002 SCIL1 C2062 0.47u R2003 SCIR1 C2063 0.47u R2004 AV_LIN C2064 0.47u R2005 AV_RIN 5V2-AU C2065 0.47u R2006 R2011 C2000 C2029 L2008 C2028 100p 0.1U 2.2uH C2035 3.3uF C2001 0.1U C2036 100p 10uF/16V C2002 C2003...
  • Page 55 C911 400Vac/470p KLC-TM2018 POWER Board D904 L902 Schematic MBR20100 8u/6A C914 C917 16V/1000u 50Vac/0.1u BD901 T4SB80 C906 11,12 1KV/4700p R902 2W/47k C904 C905 400V/150u C915 XS902 400V/22n D905 16V/1000u MBR20100 T901 L27_V12 C916 C912 16V/1000u R903 2W/100 D902 1kV/390p C908 BAV21 R901 50V/47u...
  • Page 56 KLC-TM2018 XS508 V C C Panel Convert Board Schematic V C C C 5 9 2 V C C XS507 10uF D C L K D C L K D C L K D C L K D H S D H S H E A D ER18X2 H E A D E R 50X1...
  • Page 57 XS507 KLC-TM2018 XS509 Panel Convert Board Schematic 11 12 13 14 15 16 19 20 21 22 23 24 25 26 27 28 29 30 DCLK DCLK 31 32 33 34 35 36 HEADER18X2 DCLK DCLK HEADER 45X1 Title <Title> (screen connect : 35008225) Size Document Number <Doc>...
  • Page 58 KLC-TM2018 Analog Board Toplayer...
  • Page 59 KLC-TM2018 Analog Board Bottom layer...
  • Page 60 KLC-TM2018 Digital Board Toplayer...
  • Page 61 KLC-TM2018 Digital Board Bottom layer...

This manual is also suitable for:

Klc-tm2018