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Admiral EF3912 Service Manual
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Admiral EF3912 Service Manual

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Jinyoung Electronics co.,ltd

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Summary of Contents for Admiral EF3912

  • Page 1 Jinyoung Electronics co.,ltd...

  • Page 2: Table Of Contents

    Contents 1.Safety Precaution 2.Preliminary Troubleshooting 3.Specification 4.Board Layout 5.Connector 6.Software Update Steps 7.Main schematic 32" POWER Schematic 32" POWER Schematic MAIN Schematic Jinyoung Electronics co.,ltd...

  • Page 3: Safety Precaution

    1.Safety Precaution (1) When moving or laying down a LCD Set, at least two people must work together. Avoid any impact towards the LCD Set. (2) Do not leave a broken LCD Set on for a long time. T o prevent any further damages, after checking the condition of the broken Set, make sure to turn the power (AC) off.

  • Page 4: Preliminary Troubleshooting

    2.Preliminary Troubleshooting 1) LCD TV does not response or remote controller does not work. - Check the power cord to be plugged. - Check the battery of the remote controller. 2) Sound is discontinuous or broken sometimes. - Set the sound effect into 'MONO'. - Set the [SOUND] ->...

  • Page 5: Specification

    3.Specification tuner AIR:ch2~ch69 Cable:ch1~ch125 Input impedance 75 ohm Video system NTSC,PAL M/N Sound system Tuner receiving range AIR:ch2~ch69 CABLE:ch1~ch135 Input impedance 75 ohm TV input Input level -83~-5dBm(8VSB) -62~-5dBm (256QAM) ISDB (Air) ≦16dB (Cable) ≦28dB Modulation QPSK,16QAM, OFDM(J.83B) Video System MPEG-2 MP@HL MUSIC Mp3/wma/m4a/aac...

  • Page 6: Board Layout

    4.Board Layout main pcb top CN26 CN15 CN10 Power pcb Power pcb Control pcb LCD LVDS speaker Main board rear view CON8 Hdmi2 Hdmi1 Pc RGB Pc audio CATV earphone Main board side view Video in Y Pb Pr Jinyoung Electronics co.,ltd...
  • Page 7 Main board dimension Power board view <32inch> Power input Main pcb LCD panel Main pcb Jinyoung Electronics co.,ltd...

  • Page 8: Connector

    <39inch> Main board terminal description RF Input 1 IEC 75Ω PC-RGB Input D-SUB15Pin terminal Input YPBPR Input RCA terminal T erminals HDMI Input HDMI terminal USB terminal AV Input RCA terminal Ouput 1earphone terminal EarphoneT erminal Output 5.Connector -CN26: Main Board Power Supply SYMBOL DESCRIPTION GND 12,13...
  • Page 9 CN7: IR and LED board Interface PIN No. Definition Description CN7-1 KeyA/K7 POWER /RESERVED KeyB/K6 POWER Volume up Vo;ume down SOURCE Ch up Ch down MENU Ground CN7-2 LED-GREEN Green Indicator LED-RED Red Indicator +5V DC Power Supply CN5: Backlight control PIN No Definition Description...
  • Page 10 CN15: LVDS Output PIN No Definition Description VCC-Panel Power supply for panel VCC-Panel Power supply for panel VCC-Panel Power supply for panel Ground Ground Ground RXO0- L VDS ODD 0- Signal RXO0+ L VDS ODD 0+ Signal RXO1- L VDS ODD 1- Signal RXO1+ L VDS ODD 1+ Signal RXO2-...

  • Page 11: Software Update Steps

    6.Software Update Steps Step1: Copy merge_6M181.bin file to USB disk, and then plug the disk to USB slot. Step2: Power on the LCDTV . Step3: Press MENU key，then left or right key, call the main menu as below Step2: Use up or down key, move the highlight bar to Software Update(USB) and press OK key.
  • Page 13 R471 R469 C206 0.1uF C207 0.1uF DD57 8.2K R266 DD49 8.2K R267 SOP8-CS SOP8-VCC SOP8-DO SOP8-HOLD SOP8-WP/VPP SOP8-CLK SOP8-DI NC/10K R270 4.7K R271 4.7K R272 R423 R468 R466 R463 R467...
  • Page 14 2 4 6 8 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 2 4 6 8 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7 1 3 5 7...
  • Page 19 C257 560pF C259 560pF R308 100K R288 100K PBTL AVCC AGND PVCCR PVCCR PGND PGND PVCCL PVCCL...
  • Page 20 #IF_OUT #IF_OUT DIF- IF_OUT IF_OUT DIF+ TIF-AGC IFAGC BODY BODY BODY BODY +5VB T_SDA T_SCL RFAGC RFAGC 2 4 6 8 2 4 6 8 1 3 5 7 1 3 5 7 R534 TSMDO DR1VDD R535 XSEL1 XSEL1 R541 XSEL0 XSEL0 R540...
  • Page 21 POWER INPUT POWER-ON/OFF R374 5VSTB From Power Board R372 NC/0R R395 CON13/2.54 +12V_PWR MP1482 VDDC_1_26V VDDC_1_26V 4.7K POWER-ON/OFF +12V_PWR 33uH 3904 R373 4.7K C135 PWR-ON/OFF COMP PWR-ON/OFF 3904 10nF NC/SK34 C111 NC/100K Standby:L C120 C127 CA10 0.1uF 0.1uF 10nF 100uF/16V 100uF/16V CAP_POL_2 100uF/16V...
  • Page 22 LVDS CONNECTOR MSD1309PX +3_3AVDD CN15 A2006WV0-2X20P U2-B MSD1309PX B1_RXE4- B0_RXE4+ PCMCIA U2-C MSD1309PX G5_RXO4- G4_RXO4+ HDMI AUDIO PAD_PCM_D[0] PAD_TS1_D[0] PAD_PCM_D[1] PAD_TS1_D[1] AD14 I2C-SCL I2C-SDA AD15 RXA0N PAD_RX0N_A PAD_LINEIN_L0 RCA_AU_IN_0L PAD_PCM_D[2] PAD_TS1_D[2] RXA0P RCA_AU_IN_0R AD12 PAD_PCM_D[3] AC15 PAD_RX0P_A PAD_LINEIN_R0 PAD_TS1_D[3] RXA1N PAD_RX1N_A PAD_LINEIN_L1 AC12 PAD_PCM_D[4]...
  • Page 23 RP39 RP50 22RX4 22RX4 MIUA_DQS0 MA_DQS0 MIUA_DQS0 MIUA_DQS0B MA_DQSB0 MA_MCLK MIUA_DQS0B MIUA_MCLK +1_8V_DDR2 MA_MCLKZ MIUA_MCLKZ 22RX4 RP65 MIUA_DQS1 MA_DQS1 MIUA_DQS1 U9 W9751G6IB-25 MIUA_DQS1B MA_DQSB1 MIUA_DQS1B MA_DQM1 MA_DQM0 Close to DRAM MA_DQS0 A_MVERF LDQS VREF MIUA_ODT MA_ODT MA_DQSB0 MA_CKE MIUA_ODT LDQS# VssQ UDQS# VddQ...
  • Page 24 R251 C250 CVBS3_RCA RCA_CVBS1_IN RCA_CVBS1_IN R278 NC/75R R256 RGB2-YPBPR_GIN+ CVBS3_RCA R230 470R C233 RGB2_SOG RGB2_SOG R233 C236 RGB2-YPBPR_GIN+ RGB2_Y+ RGB2_Y+ R235 C238 NC/10pF NC/ESD-0402 R238 C240 RGB2-YPBPR_BIN+ RGB2_PB+ RGB2_PB+ R239 C241 RGB2-YPBPR_GIN+ NC/10pF NC/ESD-0402 RGB2-YPBPR_BIN+ R243 C244 RGB2-YPBPR_RIN+ RGB2_PR+ RGB2_PR+ RGB2-YPBPR_RIN+ R244 C245...
  • Page 25 HDMI0-5V SHIELD SHIELD HDMI0-5V CEC/DDC_GND DDCASCL DDCASCL DDC_SCL HDMI0-5V DDCASDA DDCASDA DDC_SDA HDMI0_CEC HDMI0_HPDIN SHIELD R291 DAT2_SHIELD DAT1_SHIELD DAT0_SHIELD CLK_SHIELD HDMI0_HPDIN SHIELD R504 R297 HDMI0_RX0P RXA0P RXA0P DAT0+ R298 R296 HDMI0_RX0N RXA0N RXA0N DAT0- 4.7K R299 4.7K HDMI0_RX1P RXA1P HDMI0-HPDIN RXA1P HDMI0-HPDIN DAT1+...
  • Page 26 R342 C272 VGA-TX RIN+ RIN+ R343 C273 GIN+ GIN+ NC/ESD-0402 R344 C274 BIN+ BIN+ R345 470R C275 VGA-RX SOG_RGB SOG_RGB VGA5V R346 R347 R348 NC/ESD-0402 NC/ESD-0402 NC/ESD-0402 NC/ESD-0402 NC/ESD-0402 NC/ESD-0402 R352 100R VGA_HSYNC VGA_HSYNC0 R353 100R VGA_VSYNC VGA_VSYNC0 5V_VGA R354 R355 NC/ESD-0402 NC/ESD-0402...
  • Page 27 AUDIO Pre AMP 5VSTB EN=HIGH: OPERATING 6VBUF1 +12VAMP +12VAMP MUTE Circuit EN=LOW ： MUTE 100K ON_MUTE Q48 3904 CA736 R487 MUTE_AMP MUTE_AMP R451 0: Normal HP_MUTE_AMP 5VSTB R579 1 ： Mute 100uF/16V R280 100R R415 R476 AUOUTL0 AU0_LO +12VAMP 100R R414 OP_VCC1 C364...
  • Page 28 B2_2_5V B2_2_5V AD_DVDD DR2VDD L1319 L1320 FB0603 B2_2_5V L1322 AD_AVDD FB0603 FB0603 C1452 C1454 C1455 C1513 C1514 C1461 0.1u 0.1u 0.1u VA1P1BF8402 B3_3_3V 33V_NORMAL closed to Demod PLLVDD R549 B2_2_5V L1321 4.7k FB0603 33V_NORMAL 100R DEMOD_RST I2C-SCL I2C-SDA C1517 C1518 0.1u B1_5V B4_1_2V...
  • Page 29 D14C +12V EC15 VCC2 +380V R92A +380V EC17 D14B 0.6A +24V EC30 D14A EC12 R96A LED+ 0.5A R120C R120A EC14 IC_8 D15C C36A EC31 R120B R120D D15A R120L EC16 CON3 R46A R100 +24V LED+ R104A +12V Vadj R101A R105 R103 R104 R105A R105B...
  • Page 30 pfc_d +380V 4A/600V VCC1 R34A IC1_1 CON1 LABX LABEL Title MEGMEET -ZhuHua Size Number Revision MIP390D-XXX REV:1.0 Date: 2012-9-3 Sheet of 1 OF 3 File: C:\Documents and Settings\..\PFC.Sch Drawn By:...
  • Page 31 +12V R421 D401A R418 R407A LED4- Q408 R406 D402A LED3- Vadj CON4 R419 Z401 R420 Q401 R401 BL/ON D401 LED2- R402 D402 LED1- CON5 CON6 LED+ LED+ LED+ LED+ LED2- LED1- R404A +12V LED2- LED1- Q405 CON7 CON8 R409 R404 Q403 LED+ LED+...
  • Page 32 VCC2 VCC1 P1-3 P1-4 +5VSB R112 R113 R114 +380V +380V CY10 IC2_VCC +5VSB EC11 EC10 R24A +5VSB CON2 PS-ON +5VSB +5VSB P1-4 +12V P1-3 PS-ON Title MEGMEET -ZhuHua Size Number Revision MIP390D-XXX REV 1.0 Date: 2012-9-3 Sheet of File: C:\Documents and Settings\..\FL.Sch Drawn By:...