Shivaki STV-19LED3 Скачать руководство пользователя страница 32

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SPECIFICATION

MODEL﹕PDN-48-48A STANDARD: 12V—4.0A

ITEM

NO.

DESCRIPTION

QUY

SUPPLIES

Standard/

approval

R10.R
11
R12.R
13

SMD Resistor
100K

Ω

±5% 1206

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R14

Metal Film Resistor
0.39

1W ± 1%

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

R15
R16

SMD Resistor
22

Ω

±5% 1206

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R17

SMD Resistor
240

Ω

±1% 1206

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R18

SMD Resistor
56K

Ω

±5% 0805

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R19

SMD Resistor
51K

Ω

±1% 0805

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R20

SMD Resistor
10K

Ω

±1% 0805

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R21

SMD Resistor
5.1K

Ω

±5% 0805

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R22

SMD Resistor
0

Ω

±5% 0805

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

R24

SMD Resistor
3.9K

Ω

±5% 1206

SHIMENG ELECTRONIC (SHENZHEN)CO.,LTD

FENGHUA ADVANCED TECHNOLOGY CO.,LTD

Power MOSFET
HFS10N60 or FPQ10N60

ST SEMICONDUCTORS
DISCRETE&INTEGRATION SEMICONDUCTOR

Q2 IC TL431 TO-92

1 HONGKONG XIFENGCHENG CO.,LTD

IC1

IC OB2269 SO-8 OR
IC SDC4569 SO-8

LITEON SEMICONDUCTOR COMPANY
SDC SEMICONDUCTOR COMPANY

Shrinkable tube

SHENZHEN CHANGYUAN ELETRONIC MATERIAL
CO.,LTD

Label

SHENZHEN DONGSHENG CO.,LTD

SHENZHEN RONGXINDA PRINTING CO.,LTD

HS1
HS2

Radiator
AL

JINGHONGXING(SHENZHEN)HARDWARE
TECHNOLOGY CO.,LTD

C13

HI-VOLTAGE CERAMIC
CAPACITOR 101M/1000V

JINYANG INTERNATIONAL CO.,LTD
Xi’an jiuyuan high voltage capacitor factory

ITEM DATE PAGE

REV.

adapter

2009.06.18

13 of 15

第 32 页，共 45 页

Содержание STV-19LED3

Страница 1: ...SERVICE MANUAL STV 19LED3 第 1 页共 45 页 ...

Страница 2: ...UT 4 3 FEATURES 5 4 PCB DIMENSIONS 6 5 SCHEMATICS OF IR BOARD KEY BOARD 6 6 INTERFACE DEFINITION 6 7 SCHEMATIC 6 8 POWER BOARD 6 9 BOM LIST 7 10 BOARD SERVICE MANUAL 7 11 LINE DIAGRAM 8 12 SOFTWARE UPDATE 8 3 3 4 8 9 9 13 22 34 36 44 45 第 2 页共 45 页 ...

Страница 3: ...81VG MST6M182VG plus TELETEXT and NICAM functions Therefore if TELETEXT or NICAM functions are needed chipset MST6E181VG MST6E182VG should be used 2 FUNCTION LAYOUT The picture is for a reference only the actual item is the standard The optional connectors and terminals are marked with ENLARGED VIEW OF T MS18VG 62B As the picture shows in right you can judge chipset according to the resistance TOP...

Страница 4: ...ual Single LVDS Interface Max Resolution 1920 1080 VIDEO INPUT TV Receiving Range 48 25MHz 863 25MHz Input impedance 75Ω Video System PAL SECAM Sound System BG DK I NICAM A2 only for MST6E181VG 182VG TELETEXT only for MST6E181VG 182VG 1000Pages Max Storage Channels 199CH PC RGB Format Up to 1920 1080 60Hz CVBS Video System PAL NTSC SECAM Video level 1 0 VP P 5 Component 480i 480p 576i 576p 720p 10...

Страница 5: ...hemselves USB MULTIMEDIA PLAYBACK FORMAT Media File Ext Codec Remark Video Audio Movie avi MJPEG MP3 WMA AAC MP2 PCM AC3 Max Resolution And Frame Rate 640 480 30fps Max Data Rate 10 Mbps Xvid MPEG 2 MPEG 4 DivX H 264 Only for 182VG Max Resolution And Frame Rate 720p 30fps for 181VG 1920 1080 30fps for 182VG Max Data Rate 20 Mbps mp4 MPEG 2 MPEG 4 DivX H 264 Only for 182VG ts trp MPEG 2 H 264 Only ...

Страница 6: ...mpressed file is not supported Note 1 Licenses involved in specifications above are supposed to be obtained by customers themselves eg AC3 and DivX 2 MP4 cannot support GMC 3 MST6M181VG MST6E181VG don t support H 264 while MST6M182VG MST6E182VG support USB DEVICE PARAMETERS Maximum USB size Maximum single file size NTFS 2T 2T FAT 32 192G 4G FAT 16 2G 2G SUBSTITUTABLE PRIMARY MATERIALS The table is...

Страница 7: ...100ms 50ms 12V Built In 12V 12V 0 6V 2000mA 120mVP P 100ms 50ms 12V 5V Built In 12V 12V 0 6V 1300mA 120mVP P 100ms 50ms 5V 5 1V 0 05V 1500mA 50mVP P 100ms 50ms 12V 5V 5VSB Built In 12V 12V 0 6V 1300mA 120mVP P 100ms 50ms 5V 5 1V 0 05V 1400mA 50mVP P 100ms 50ms 5VSB 5 1V 0 05V 150mA 50mVP P 50ms Note The current of panel inverter and extension modules are not included in max current POWER UP TIMING...

Страница 8: ...N HDMI IN 11 3 4 6 5 2 7 9 10 12 13 1 NO DESCRIPTION YPbPr CVBS L IN YPbPr Pr IN CVBS IN COAX OUT PC AUDIO IN EARPHONE OUT 8 DC IN 9 10 11 12 13 14 15 8 7 6 5 4 3 2 1 VGA IN Ver V1 0 4 PCB DIMENSIONS The size of T MS18VG 62B is 190mm L 104mm W 22mm H 第 8 页共 45 页 ...

Страница 9: ...ey too Recommended order K0 INPUT K1 CH K2 CH K3 VOL K4 VOL K5 MENU K6 POWER K7 NULL 6 INTERFACE DEFINITION CN4 6PIN 2 0 5V POWER SUPPLY CONNECTOR NO SYMBOL DESCRIPTION 1 5V 5V DC Power Supply 2 5V 3 GND Ground 4 GND 5 5VSB 5V DC Power Supply for Standby Mode 6 PWON Power On Off CN21 2 15PIN 2 0 LVDS INTERFACE CONNECTOR NO SYMBOL DESCRIPTION 1 VSEL Power Supply for Panel 2 VSEL 3 VSEL 第 9 页共 45 页...

Страница 10: ...N 0 Signal 20 TXE0 LVDS EVEN 0 Signal 21 TXE1 LVDS EVEN 1 Signal 22 TXE1 LVDS EVEN 1 Signal 23 TXE2 LVDS EVEN 2 Signal 24 TXE2 LVDS EVEN 2 Signal 25 GND Ground 26 GND 27 TXEC LVDS EVEN Clock Signal 28 TXEC LVDS EVEN Clock Signal 29 TXE3 LVDS EVEN 3 Signal 30 TXE3 LVDS EVEN 3 Signal CN9 8PIN 2 0 DVD POWER SUPPLY CONTROL CONNECTOR NO SYMBOL DESCRIPTION 1 D5V 5V DC Power Supply for DVD 2 D5V 3 GND Gr...

Страница 11: ... DESCRIPTION 1 12V 12V DC Power Supply 2 12V 3 BLO Back Light ON OFF Control for Panel 4 ADJ Brightness Adjustment for Panel 5 GND Ground 6 GND CN11 4PIN 2 0 EXTERNAL USB CONNECTOR NO SYMBOL DESCRIPTION 1 5V 5V DC Power Supply for USB 2 DM USB Data 3 DP USB Data 4 GND Ground CN8 14PIN 2 0 IR KEY BOARD CONNECTOR NO SYMBOL DESCRIPTION 1 5V 5V DC Power Supply 2 RED Red Indicator 3 GRN Green Indicator...

Страница 12: ...on 2 GND Ground 3 DRI DVD Audio Right Channel Input 4 GND Ground 5 DLI DVD Audio Left Channel Input 6 DPB DVD Component Pb Input 7 GND Ground 8 DPR DVD Component Pr Input 9 GND Ground 10 DY DVD Component Y Input 11 GND Ground 7 CONFIGURATION GENERAL PRECAUTIONS Relative humidity 80 Storage temperature 10 60 C Operation temperature 0 40 C Protect the board from static electricity in case of damage ...

Страница 13: ... RL8 91ohm 0402 1 1 16W RL11 100ohm 0402 1 1 16W CL50 NC 0 1uF 0402 Y5V 80 20 16V CL42 0 47uF 0402 Y5V 80 20 10V GND GND 2V5 2V5 TEST CL43 NC 10uF 0805 X5R 10 6 3V EL41 100uF 16V 20 5 11 105 GND CL49 1uF 0603 Y5V 80 20 10V RC32 12Kohm 0402 1 1 16W RC33 10Kohm 0402 1 1 16W CC31 0 47uF 0402 Y5V 80 20 10V CC34 0 47uF 0402 Y5V 80 20 10V RC31 10Kohm 0402 5 1 16W CC35 NC 10uF 0805 X5R 10 6 3V EC32 470uF...

Страница 14: ...30FR LV4 0ohm 0402 5 1 16W LV5 0ohm 0402 5 1 16W LV1 0ohm 0402 5 1 16W LV2 0ohm 0402 5 1 16W LV3 0ohm 0402 5 1 16W DV6 NC AVLC18S02003 DV7 NC AVLC18S02003 GND GND PC LIN PC RIN RV14 4K7ohm 0402 5 1 16W RV15 4K7ohm 0402 5 1 16W GND GND GND RV22 33ohm 0402 5 1 16W CV14 1000pF 0402 X7R 10 50V VS VGA HS VGA GND UART RX DDC UART TX DDC PC VSIN PC HSIN PC SOG PC GIN PC BIN PC RIN SCART1 FB RS9 33Kohm 04...

Страница 15: ...15 USB0 DM A15 TESTPIN C13 USB0 DP A14 USB1 DM A13 USB1 DP B13 SCK C15 GND EFUSE D13 SDI C16 SAR0 GPIO11 GPIO75 B11 DDCA CK D10 DDCA DA D11 PWM0 GPIO20 GPIO26 B12 PWM1 GPIO21 GPIO25 C12 PMGPIO GPIO10 GPIO66 D12 PM1 GPIO6 GPIO67 A11 PM4 GPIO7 GPIO68 A10 PM5 GPIO8 GPIO69 B10 PM6 GPIO9 GPIO70 C9 HOTPLUGD D5 RXCKN D C7 RXCKP D B7 RX0N D C6 RX0P D B6 RX1N D A6 RX1P D C5 DDCDD DA C4 RX2N D A5 RX2P D B5 ...

Страница 16: ... 80 20 10V CA2 1uF 0603 Y5V 80 20 10V IC MUTE AMP LIN AMP RIN RA1 10Kohm 0402 5 1 16W RA2 10Kohm 0402 5 1 16W AMP MUTE QA1 MMBT3904 f 350MHz GND RA3 10Kohm 0402 5 1 16W RA4 2K2ohm 0402 5 1 16W RA5 4K7ohm 0402 5 1 16W RA6 10Kohm 0402 5 1 16W EA1 470uF 16V 20 8 12 105 EA4 100uF 16V 20 5 11 105 L_IN 1 SGND 2 SVRR 3 L_OUT 4 PGND 5 R_OUT 6 VP 7 M SS 8 R_IN 9 10 11 12 13 14 15 16 17 18 YD1517P UA1 YD151...

Страница 17: ...0 tf2n 19 gnd 25 clk_out 11 vcc 12 IF_P 14 IF_N 13 vcc 3 UT3 1 1 2 2 LT7 NC HQ1005C2N2CTM01 1 1 2 2 LT8 NC HQ1005C2N2CTM01 1 1 2 2 LT3 NC 150nH 0603 5 C 1 1 2 2 LT6 NC 150nH 0603 5 C CT12 NC 4 7pF 0402 NPO 5 50V CT15 NC 1000pF 0402 X7R 10 50V CT20 NC 0 01uF 0402 X7R 10 50V CT26 NC 0 033uF 0402 X7R 10 16V CT25 NC 2 2uF 0603 Y5V 80 20 10V CT16 NC 0 1uF 0402 Y5V 80 20 16V CT17 NC 0 1uF 0402 Y5V 80 20...

Страница 18: ...ALV301 PALV302 COLV3 PALV402PALV401 COLV4 PALV501 PALV502 COLV5 PAM100 COM1 PAM200 COM2 PAM300 COM3 PAM400 COM4 PAPC0LI01 COPC0LI PAPC0RI01 COPC0RI PAQ10B PAQ10E PAQ10C COQ1 PAQ20B PAQ20E PAQ20C COQ2 PAQ200C PAQ200E PAQ200B COQ20 PAQA10B PAQA10E PAQA10C COQA1 PAQA20B PAQA20E PAQA20C COQA2 PAQA30B PAQA30E PAQA30C COQA3 PAQB10B PAQB10E PAQB10C COQB1 PAQB110B PAQB110E PAQB110CCOQB11 PAQD10S PAQD10G P...

Страница 19: ...ALV302 COLV3 PALV402 PALV401 COLV4 PALV501 PALV502 COLV5 PAM100 COM1 PAM200 COM2 PAM300 COM3 PAM400 COM4 PAPC0LI01 COPC0LI PAPC0RI01 COPC0RI PAQ10B PAQ10E PAQ10C COQ1 PAQ20B PAQ20E PAQ20C COQ2 PAQ200C PAQ200E PAQ200B COQ20 PAQA10B PAQA10E PAQA10C COQA1 PAQA20B PAQA20E PAQA20C COQA2 PAQA30B PAQA30E PAQA30C COQA3 PAQB10B PAQB10E PAQB10C COQB1 PAQB110B PAQB110E PAQB110CCOQB11 PAQD10S PAQD10G PAQD10D ...

Страница 20: ...V 2 0 2 P A L V 2 0 1 C O L V 2 P A L V 3 0 1 P A L V 3 0 2 C O L V 3 PALV402 PALV401 C O L V 4 PALV501 PALV502 C O L V 5 P A M 1 0 0 C O M 1 P A M 2 0 0 C O M 2 P A M 3 0 0 C O M 3 P A M 4 0 0 C O M 4 P A P C 0 L I 0 1 C O P C 0 L I P A P C 0 R I 0 1 C O P C 0 R I P A Q 1 0 B P A Q 1 0 E P A Q 1 0 C C O Q 1 P A Q 2 0 B P A Q 2 0 E P A Q 2 0 C C O Q 2 P A Q 2 0 0 C P A Q 2 0 0 E P A Q 2 0 0 B COQ2...

Страница 21: ...V 2 0 2 P A L V 2 0 1 C O L V 2 P A L V 3 0 1 P A L V 3 0 2 C O L V 3 PALV402 PALV401 C O L V 4 PALV501 PALV502 C O L V 5 P A M 1 0 0 C O M 1 P A M 2 0 0 C O M 2 P A M 3 0 0 C O M 3 P A M 4 0 0 C O M 4 P A P C 0 L I 0 1 C O P C 0 L I P A P C 0 R I 0 1 C O P C 0 R I P A Q 1 0 B P A Q 1 0 E P A Q 1 0 C C O Q 1 P A Q 2 0 B P A Q 2 0 E P A Q 2 0 C C O Q 2 P A Q 2 0 0 C P A Q 2 0 0 E P A Q 2 0 0 B COQ2...

Страница 22: ...1 4 V 12 6 V 0 A 4 0 A 1 6 Input voltage regulation line regulation The line regulation is less than 2 full load and 10 input voltage 1 7 Load regulation The load regulation is less than 3 1 8 Efficiency AV 84 min input 115Vac 60Hz Output with 12VDC full load 84 min input 230Vac 50Hz Output with 12VDC full load 1 9 Ripple and noise voltage less than 240mVp p input 100 240Vac 50Hz Output with 12VDC...

Страница 23: ...nter into normal condition if the fault condition is removed 3 ENVIRONMENT 3 1 OPERATING TEMPERATURE 5 40 3 2 OPERATING HUMIDITY 5 95 R H 3 3 STORAGE TEMPERATURE 20 85 3 4 STORAGE HUMIDITY 5 95 R H 4 RELIABILITY 4 1 MTBF 50 000 Hours at ambient 25 4 2 On Off Life To verify the power supply withstand 5 000 time on off repetition of Primary power without failure or damage at 100Vac input 4 3 Burn in...

Страница 24: ... IEC60065 meet CCC GB4943 GB8898 meet PSE J60950 J55022 J60065 No meet Australia AS NZS60950 AS NZS60065 meet 5 2 EMI Meet FCC part 15 Class B CISPR part 22 Class B CE 3C 5 3 EMS Test Item Test specification IEC standards ESD Contact 4KV AIR 8KV IEC61000 4 2 RF FR 26MHz 1 0GHz Field Strength 3V M IEC61000 4 3 EFT 2KV ON AC power line IEC61000 4 4 SURGE 1KV L N 2KV L PE N PE IEC61000 4 5 CS 3V M IE...

Страница 25: ...SPECIFICATION MODEL PDN 48 48A STANDARD 12V 4 0A ITEM DATE PAGE REV adapter 2009 06 18 6 of 15 01 第 25 页共 45 页 ...

Страница 26: ...SPECIFICATION MODEL PDN 48 48A STANDARD 12V 4 0A DC CABLE AND CONNECTOR ITEM DATE PAGE REV adapter 2009 06 18 7 of 15 01 第 26 页共 45 页 ...

Страница 27: ...SPECIFICATION MODEL PDN 48 48A STANDARD 12V 4 0A LABEL ITEM DATE PAGE REV adapter 2009 06 18 8 of 15 01 第 27 页共 45 页 ...

Страница 28: ...of 15 01 1 2 3 4 DB1 X1 C1 1 2 3 D1 L1 Q1 PC1 R17 D4 LF1 NTC R1 R2 Y1 Y2 R7 DD1 R14 R8 R6 R3 R4 R9 D2 C12 C2 D3 C5 C3 C4 C10 R15 R16 R24 R25 R20 R22 C9 VDC Port R21 Q2 Y3 L N C7 1 2 3 4 5 6 7 8 U1 R11 R18 C8 C14 R23 T2A 250V F1 R10 R12 R13 3 T1 PQ2620 1 4 5 6 7 9 10 11 12 C11 R19 第 28 页共 45 页 ...

Страница 29: ...SPECIFICATION MODEL PDN 48 48A STANDARD 12V 4 0A PCB LAYOUT 1 1 ITEM DATE PAGE REV adapter 2009 06 18 10 of 15 01 第 29 页共 45 页 ...

Страница 30: ...acitor factory YINAN DON S ELECTRONIC COMPONENT CO LTD UL E180953 UL E145038 Y3 SAFETY RECOGNIZED DISC CERAMIC CAPACITOR 2200PF 250VAC Y1 1 Xi an jiuyuan high voltage capacitor factory YINAN DON S ELECTRONIC COMPONENT CO LTD UL E180953 UL E145038 PC1 PC817C DIP 4 1 BRTLED SHARP LETEON FSC UL1577 E236324 E113898 E90700 CON AC SOCKET 1 SHENZHEN BEIERJIA ELECTRONIC CO LTD YUEQING LECI ELECTRONIC CO L...

Страница 31: ...IONAL CO LTD Xi an jiuyuan high voltage capacitor factory C9 C12 SMD Capacitor 104 50V M 0805 2 FENGHUA ADVANCED TECHNOLOGY CO LTD C10 HI VOLTAGE CERAMIC CAPACITOR 102M 500V 1 JINYANG INTERNATIONAL CO LTD Xi an jiuyuan high voltage capacitor factory NTC NA 1 NANJING JOCOL ELECTRONICS TECHNOLOGY CO LTD R1 R2 SMD Resistor 1MΩ 5 1206 2 SHIMENG ELECTRONIC SHENZHEN CO LTD FENGHUA ADVANCED TECHNOLOGY CO...

Страница 32: ... FENGHUA ADVANCED TECHNOLOGY CO LTD R21 SMD Resistor 5 1KΩ 5 0805 1 SHIMENG ELECTRONIC SHENZHEN CO LTD FENGHUA ADVANCED TECHNOLOGY CO LTD R22 SMD Resistor 0Ω 5 0805 1 SHIMENG ELECTRONIC SHENZHEN CO LTD FENGHUA ADVANCED TECHNOLOGY CO LTD R24 SMD Resistor 3 9KΩ 5 1206 1 SHIMENG ELECTRONIC SHENZHEN CO LTD FENGHUA ADVANCED TECHNOLOGY CO LTD Q1 Power MOSFET HFS10N60 or FPQ10N60 1 ST SEMICONDUCTORS DISC...

Страница 33: ...SPECIFICATION MODEL PDN 48 48A STANDARD 12V 4 0A PACKAGING ITEM DATE PAGE REV adapter 2009 06 18 14 of 15 01 第 33 页共 45 页 ...

Страница 34: ...inal MDJF22 BA I 1 buttom jack terminal MDJF23 I 1 assy for stand MDEA21 I 1 metal Stripe for panel_left MDEA22 I 1 metal Stripe for panel_right MDHA22 I 1 metal mount for panel_h_2mm MDJF26 I 1 metal mount for panel_h_0mm SCAC40012FD I 3 screw GB90748 88 M4 12 SCC 306R0FD I 4 screw GB819 87 M3 6 SCC 308R0FD I 3 screw GB819 87 M3 8 SKA 308R0FF I 8 screw SJ845 87 ST3 10C SLA 30010FD I 5 screw SJ282...

Страница 35: ...MA3X0223A I 1 Promo_stickers MF1X0006A I 1 Energy label 23120230M20SY 1 acetate tape 200mm MA4X0061 AI 1 Non Woven 10mm 0 3mm 450mm STV 19LED3 BOM LIST 第 35 页共 45 页 ...

Страница 36: ... normal but the voltage is Low UL1 UL41 UL51 Check EC32 for 1 2V output UC32 LC3406CB5TR damage LC32 10μH is damaged or false welding It s normal but the voltage is high It s normal but the voltage is Low Check if pin No 4 for UC32 LC3406CB5TR is false welding or UC32 is damaged EC32 is damaged or the loader is in short circuit Y N voltage is high voltage is Low Check if pin No 4 for UC1 is false ...

Страница 37: ...ble is correct and connected tightly Check if the LCD panel is OK Y N Change the cable for panel Change LCD N Y Check if the output circuit from U6 to the jack to panel are normal Y N Check the circuit of U6 Change or repair the damage components in this part 第 37 页共 45 页 ...

Страница 38: ...ltage on grid of QM2 WPM2341 can changed 12 0V or 5V 0 IIs there output signal from U6 N Y Y N CN5 or CN6 is ill connected is there voltage for panel or QM2 is damaged Check if the circuit of QM1 is normal Change the LCD panel or the cable to panel U6 is illness Check if the I O of U6 is damaged QM1 is damaged N Y 第 38 页共 45 页 ...

Страница 39: ...n Black screen Check if the voltage on CN3 BLON is 5V N Y Check if the power supply for inverter is normal Check the control circuit from BLON to U6 or U6 is damaged N Y Repair the power supply The inverter is damaged 第 39 页共 45 页 ...

Страница 40: ...Y 5 Audio Trouble No sound Check external Audio equipment Check the voltage 9 2V on pin no 8 Of UA1 Repair the UA1 power supply Rest it Check external speaker N Y Check the signal input on pin1 9 of UA1 Y N Y N Check the circuit from UA1 to CNA1 or UA1 is damaged Check the circuit from U6 to UA1 is normal Y Repair the circuit from U6 to UA1 U6 is illness N Does QA2 and QA3 has damage 第 40 页共 45 页...

Страница 41: ...heck if T2 pin6 7 has data for I2C N Y Check if T2 pin9 10have data N Y Check external RF signal source Check the power supply circuit Check the circuit from T2 pin9 10 to U6 and the power supply for U6 Check if T2 pin2 for variational voltage within 1 8V 4 3V Check the circuit in this part N Y Change T2 Check the I2C circuit 第 41 页共 45 页 ...

Страница 42: ...gnal of U6 is normal Y N Check if the signal of V sync H sync is OK Y N 7 Function Trouble PC Do auto adjust process Do reset process on the menu Y N Check the circuit of R G B input Check the circuit of VS HS Do reset process on the menu or the input mode can t be supported Check the circuit of VS HS Y N 第 42 页共 45 页 ...

Страница 43: ...B input 8 Function Trouble SCART HDMI YPbPr TV Do reset on the menu 1 Check the R G B circuit If it is on SCART channel you should check the input circuit of SCART R G B 1 HDMI interface false welding 2 System setting wrong do reset Check if R G B input of U6 is normal Y N Check the circuit between CVBS interface and U6 第 43 页共 45 页 ...

Страница 44: ...STV 19LED3 Line Doagram 第 44 页共 45 页 ...

Страница 45: ...rt the USB to main board Press MENU key and then press keys to select OPTION menu Press OK key to enter OPTION menu press select software Update USB Then press OK key to update the software Please care not power off when software updating 第 45 页共 45 页 ...

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