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Admiral EF3912, Service Manual, Page: 8 / 33

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Admiral EF3912 Service Manual Download Page 8

8 

Jinyoung Electronics co.,ltd 

 

 

 

 

 

 

 

 

Main board terminal description 

Terminals 

Input 

RF Input 

1 IEC 75Ω 

PC-RGB Input 

D-SUB15Pin 
terminal 

YPBPR Input 

RCA terminal 

HDMI Input 

HDMI terminal 

USB 

USB terminal 

AV Input 

RCA terminal 

Ouput 

EarphoneTerminal Output 

1earphone terminal 

5.Connector 

-CN26:

 

Main Board Power Supply

 

NO

 

SYMBOL

 

DESCRIPTION

 

1,2 

GND 12,13 

+5.2VSB +12VDC RETURN 

3,4 

+5V 

+5VDC INPUT 

5 

PSON 

SMPS ON/OFF CONTROL(ON = HIGH) 

6 

+5VSB 

S5.0VDC) INPUT 

7,8 

+5V 

+5VDC INPUT 

9,10,11 

GND 

+5.2VSB +12VDC RETURN 

12,13 

+12V 

+12VDC INPUT 

 

<39inch>

Summary of Contents for EF3912

Page 1: ...1 Jinyoung Electronics co ltd ...

Page 2: ...cs co ltd Contents 1 Safety Precaution 3 2 Preliminary Troubleshooting 4 3 Specification 5 4 Board Layout 6 5 Connector 8 6 Software Update Steps 11 7 Main schematic 12 32 POWER Schematic 32 POWER Schematic MAIN Schematic ...

Page 3: ...ing Because screws holding PCBs are working as electric circuit grounding make sure to check if any screw is missing when assembling reassembling Do not leave any screws inside the set 5 A LCD Set contains different kinds of connector cables When connecting or disconnecting cables check the direction and position of the cable beforehand 6 Connect disconnect the connectors slowly with care especial...

Page 4: ...g station if the RF cable connection has no problem 4 Picture of analog program is noisy Check the RF cable connection Check if Picture N R is ON Change the Channel Fine Tune value 5 Sound is not generated in HDMI mode Reconnect HDMI jack DVI signal has no sound Check the output signal of device to be connected to LCD TV If you want to use DVI HDMI cable you should also connect audio cable into th...

Page 5: ... bmp png MOVE Avi mp4 ts trp mkv mov mpg dat vob rm rmvb Video Input PC RGB Format Up to SXGA 75Hz H Frequency 30 80KHz V Frequency 56 75Hz CVBS 1 0 Vp p 5 Y pbPr 480i 480p 576i 576p 720p 1080i 1080p HDMI 480i 480p 576i 576p 720p 1080i 1080p Audio Input PC RGB Earphone input terminal YPbPr L R RCA input Expansion function USB USB 2 0 Power Input 5V 12V T o Panel L VDS 5V or 12V Management Low powe...

Page 6: ...Board Layout main pcb top CN5 CN26 CN7 CN15 CN10 Power pcb Power pcb Control pcb LCD LVDS speaker Main board rear view P6 P5 P8 P9 U17 U17 CON8 Hdmi2 Hdmi1 Pc RGB Pc audio RF CATV earphone Main board side view T14 T15 Video in Y Pb Pr ...

Page 7: ...7 Jinyoung Electronics co ltd Main board dimension Power board view Power input Main pcb LCD panel Main pcb 32inch ...

Page 8: ...nput HDMI terminal USB USB terminal AV Input RCA terminal Ouput EarphoneT erminal Output 1earphone terminal 5 Connector CN26 Main Board Power Supply NO SYMBOL DESCRIPTION 1 2 GND 12 13 5 2VSB 12VDC RETURN 3 4 5V 5VDC INPUT 5 PSON SMPS ON OFF CONTROL ON HIGH 6 5VSB STANDBY 5 0VDC INPUT 7 8 5V 5VDC INPUT 9 10 11 GND 5 2VSB 12VDC RETURN 12 13 12V 12VDC INPUT 39inch ...

Page 9: ...d 11 IR IR 12 LED GREEN Green Indicator 13 LED RED Red Indicator 14 5V 5V DC Power Supply CN5 Backlight control PIN No Definition Description 1 GND Ground 2 GND Ground 3 DIMMING Brightness Adjustment for panel 4 BL_OFF Backlight On Off Control for Panel 5 BL_12V 12V DC power Supply BL_12V 12V DC power Supply CN10 Speaker Output PIN No Definition Description 1 R output Audio Right Channel Output 2 ...

Page 10: ... Signal 17 RXO3 L VDS ODD 3 Signal 18 RXO3 L VDS ODD 3 Signal 19 RXE0 L VDS EVEN 0 Signal 20 RXE0 L VDS EVEN 0 Signal 21 RXE1 L VDS EVEN 1 Signal 22 RXE1 L VDS EVEN 1 Signal 23 RXE2 L VDS EVEN 2 Signal 24 RXE2 L VDS EVEN 2 Signal 25 GND Ground 26 GND Ground 27 RXEC L VDS EVEN Clock Signal 28 RXEC L VDS EVEN Clock Signal 29 RXE3 L VDS EVEN 3 Signal 30 RXE3 L VDS EVEN 3 Signal 31 GND Ground 32 GND G...

Page 11: ...r 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 Step4 Press left key to confirm to software update or right key to cancel the operate Step5 Wait the end of this operation and then the LCDTV will be restart automatically ...

Page 12: ...8 6 8K_1 R202 0 R96 100R_1 R25 6 8K 1 2 3 4 5 6 7 8 9 H4 PAD C301 0 1uF R144 NC 4 7K 3 VIN 1 GND 2 VOUT 4 VOUT U6 AMS1117 ADJ C20 10n C401 0 1uF C395 0 1uF R218 4 7K R1559 470R C27 0 1uF R209 0 R232 1 5R 2W C438 0 1uF C29 0 1u D93 NC SK34 1 2 3 U20 AO3401 C394 0 1uF V202 3904 C125 10uF C143 0 1uF 1 H13 TPAD C442 0 1uF R210 100K 1 3 2 Q22 3904 7 EN 5 FB 2 VCC 3 OUT 1 BST 4 GND 8 SS 6 COMP 9 SHIELD ...

Page 13: ...ND R18 GND T18 GND U18 GND K19 GND L19 GND M19 GND N19 GND N20 GND M20 GND L20 GND K20 GND N21 GND M21 GND L21 GND K21 GND N22 GND M22 GND L22 GND K22 GND J22 GND H22 GND Y10 GND AC2 GND AE1 GND U2 F MSD1309PX C207 0 1uF R35 NC 10K L41 FB R441 6 8K R1565 22 R9 10K_1 C34 10uF R206 0R R463 NC R269 100K R702 0 R270 NC 10K R368 68R C336 0 1uF R444 15K R104 10K C324 NC 0 1u R272 4 7K R508 22R 2 4 6 8 1...

Page 14: ...8 1 3 5 7 RP3 22RX4 R103 100R 2 4 6 8 1 3 5 7 RP37 75RX4 R13 75R C428 47nF 2 4 6 8 1 3 5 7 RP19 75RX4 R438 10K_1 R107 10K_1 2 4 6 8 1 3 5 7 RP14 22RX4 2 4 6 8 1 3 5 7 RP36 75RX4 R116 10K_1 2 4 6 8 1 3 5 7 RP21 22RX4 2 4 6 8 1 3 5 7 RP2 22RX4 2 4 6 8 1 3 5 7 RP65 22RX4 C431 47nF 2 4 6 8 1 3 5 7 RP38 75RX4 2 4 6 8 1 3 5 7 RP1 22RX4 2 4 6 8 1 3 5 7 RP66 22RX4 R396 75R R383 100R 2 4 6 8 1 3 5 7 RP60 2...

Page 15: ...V3 H1 C244 47n C236 47n C233 1n 1 2 D13 NC ESD 0402 R243 33R V L R 5 3 1 2 4 6 T15 RCA AV3 H1 1 2 D15 NC ESD 0402 C252 2 2u R238 33R R233 33R R255 12K C245 NC 10pF C241 NC 10pF R248 33R 1 2 D29 NC ESD 0402 R249 12K C240 47n C238 NC 10pF C248 47n R244 75R RGB2_SOG RGB2_Y RGB2_PB RGB2_PR RCA_CVBS_IN RCA_AU_IN_0R RCA_AU_IN_0L RCA_CVBS1_IN AV AUR1 CVBS3_RCA CVBS0_RCA RCA_CVBS_IN AV AUL1 RGB2 YPBPR_BIN...

Page 16: ...SHIELD 22 SHIELD 23 SHIELD P5 HDMI 180D R291 1K 1 2 D35 NC ESD 0 15pF 1 2 D56 NC ESD 0402 R319 10R R300 10R R329 NC 22K 1 2 D41 NC ESD 0402 1 2 D48 NC ESD 0 15pF R303 10R 1 2 D36 NC ESD 0 15pF 1 2 D43 NC ESD 0402 1 2 D42 NC ESD 0402 R336 0R 1 2 3 Q11 MMBT3904 R297 10R R317 10R 1 2 D49 NC ESD 0 15pF R298 10R R310 4 7K R316 10R R333 NC 220R 1 2 D50 NC ESD 0 15pF R315 10R R299 10R R313 10R 1 2 3 Q12 ...

Page 17: ... R359 100R R353 100R R358 100R 1 2 D85 NC ESD 0402 D79 NC BAT54C C272 47n R363 100R C275 1n 1 2 D58 NC ESD 0402 1 2 D74 NC ESD 0402 R357 4 7K C274 47n R365 10K C281 560p 1 2 D75 NC ESD 0402 1 2 D71 NC ESD 0402 R366 12K C303 560p 1 2 D72 NC ESD 0402 R364 10K R343 33R R355 4 7K R348 75R 1 2 D73 NC ESD 0402 C279 2 2u 5V_VGA 5V 5V_VGA PC_AUDIO AUR0 PC_AUDIO AUL0 ISP RXD ISP TXD VGA_HSYNC0 VGA_VSYNC0 R...

Page 18: ...D28 NC ESD 0402 0 15pF 1 2 DD32 NC ESD 0402 0 15pF 1 2 DD27 NC ESD 0402 0 15pF R377 5 1R 1 1_VCC 2 2_D 3 3_D 4 4_GND 5 SHIELD 6 SHIELD CN9 USB_4P MOLEX 1 1 2 2 3 3 4 4 CN6 CON4 2 0 R376 5 1R 1 2 DD30 NC ESD 0402 0 15pF R385 5 1R R386 5 1R 5V_USB 5V_USB USB0_DM USB0_DP USB1_DM USB1_DP USB1_D USB1_D USB1_DP USB0_D USB0_DM USB0_DP USB0_D USB1_DM USB1_D USB1_D ...

Page 19: ...265 1u 25V C361 NC 2 2uF C296 220n 50V C298 1u 25V C179 2 2uF R450 10K C284 1u 25V R449 10K C289 1u 25V NC C311 330n 50V 2 3 5 1 4 CON8 PC_AUDIO PHONE JACK 90D C280 1u 25V C270 1u 25V R280 100R R489 47K 1 1 2 2 3 3 4 4 CON11 CON4_2 54 C277 330n 50V C313 1u 25V R274 10R NC L20 FB220 3A C276 330n 50V C293 330p 50V NC C315 330p 50V NC 23 SOT C B E 1 3 2 Q51 3906 R487 10K R451 100R D76 5V6 C290 330n 5...

Page 20: ...SBYTE 60 SRDT 61 SRCK 62 VSS 63 VDDC 64 VDDS 1 TSMDO 2 XSEL1 3 XSEL0 4 VSS 5 SLADRS1 6 SLADRS0 7 AGC_I 8 S_INFO 9 AGCCNTI 10 AGCCNTR 11 CKI 12 TNSCL 13 VDD33 14 TNSDA 15 VSS 16 VDDC 17 PLLVSS 18 X0 19 X1 20 PLLVDD 21 FIL 22 AD_AVDD 23 AD_AVSS 24 AD_VREFP 25 AD_VREFN 26 AD_VREF 27 ADQ_AIN 28 ADQ_AIP 29 ADI_AIN 30 ADI_AIP 31 AD_DVSS 32 AD_DVDD 33 VSS 34 DR1VDD 35 VDDS 36 VDDC 37 VSS 38 STSFLG1 39 DT...

Page 21: ...07 10K R202 0 R96 100R_1 1 2 3 4 5 6 7 8 9 H4 PAD C301 0 1uF R144 NC 4 7K 3 VIN 1 GND 2 VOUT 4 VOUT U6 AMS1117 ADJ C401 0 1uF C395 0 1uF R218 4 7K R1559 470R R209 0 R232 1 5R 2W C438 0 1uF C29 0 1u C394 0 1uF V202 3904 C125 10uF C143 0 1uF 1 H13 TPAD C442 0 1uF R210 100K 1 3 2 Q22 3904 7 EN 5 FB 2 VCC 3 OUT 1 BST 4 GND 8 SS 6 COMP 9 SHIELD U11 MP1482 R88 110_1 C304 0 1uF C133 2 2uF R84 2 2K C377 0...

Page 22: ...K17 GND L17 GND M17 GND N17 GND P17 GND R17 GND T17 GND U17 GND K18 GND L18 GND M18 GND N18 GND P18 GND R18 GND T18 GND U18 GND K19 GND L19 GND M19 GND N19 GND N20 GND M20 GND L20 GND K20 GND N21 GND M21 GND L21 GND K21 GND N22 GND M22 GND L22 GND K22 GND J22 GND H22 GND Y10 GND AC2 GND AE1 GND U2 F MSD1309PX C207 0 1uF R35 NC 10K L41 FB SW3 6 8K R1565 22 R9 10K_1 C34 10uF R206 0R R463 NC R269 100...

Page 23: ... 5 7 RP5 75RX4 2 4 6 8 1 3 5 7 RP50 22RX4 2 4 6 8 1 3 5 7 RP4 22RX4 2 4 6 8 1 3 5 7 RP3 22RX4 R103 100R 2 4 6 8 1 3 5 7 RP37 75RX4 R13 75R C428 47nF 2 4 6 8 1 3 5 7 RP19 75RX4 R438 10K_1 R107 10K_1 2 4 6 8 1 3 5 7 RP14 22RX4 2 4 6 8 1 3 5 7 RP36 75RX4 R116 10K_1 2 4 6 8 1 3 5 7 RP21 22RX4 2 4 6 8 1 3 5 7 RP2 22RX4 2 4 6 8 1 3 5 7 RP65 22RX4 C431 47nF 2 4 6 8 1 3 5 7 RP38 75RX4 2 4 6 8 1 3 5 7 RP1 ...

Page 24: ... 75R R247 10K R278 NC 75R V L R 5 3 1 2 4 6 T14 RCA AV3 H1 C244 47n C236 47n C233 1n 1 2 D13 NC ESD 0402 R243 33R V L R 5 3 1 2 4 6 T15 RCA AV3 H1 1 2 D15 NC ESD 0402 C252 2 2u R238 33R R233 33R R255 12K C245 NC 10pF C241 NC 10pF R248 33R 1 2 D29 NC ESD 0402 R249 12K C240 47n C238 NC 10pF C248 47n R244 75R RGB2_SOG RGB2_Y RGB2_PB RGB2_PR RCA_CVBS_IN RCA_AU_IN_0R RCA_AU_IN_0L RCA_CVBS1_IN AV AUR1 C...

Page 25: ...LD 23 SHIELD P5 HDMI 180D R291 1K 1 2 D35 NC ESD 0 15pF 1 2 D56 NC ESD 0402 R319 10R R300 10R R329 NC 22K 1 2 D41 NC ESD 0402 1 2 D48 NC ESD 0 15pF R303 10R 1 2 D36 NC ESD 0 15pF 1 2 D43 NC ESD 0402 1 2 D42 NC ESD 0402 R336 0R 1 2 3 Q11 MMBT3904 R297 10R R317 10R 1 2 D49 NC ESD 0 15pF R298 10R R310 4 7K R316 10R R333 NC 220R 1 2 D50 NC ESD 0 15pF R315 10R R299 10R R313 10R 1 2 3 Q12 MMBT3904 R314 ...

Page 26: ... 2 D84 NC ESD 0402 R342 33R 1 2 D57 NC ESD 0402 R359 100R R353 100R R358 100R 1 2 D85 NC ESD 0402 D79 NC BAT54C C272 47n R363 100R C275 1n 1 2 D58 NC ESD 0402 1 2 D74 NC ESD 0402 R357 4 7K C274 47n R365 10K C281 560p 1 2 D75 NC ESD 0402 1 2 D71 NC ESD 0402 R366 12K C303 560p 1 2 D72 NC ESD 0402 R364 10K R343 33R R355 4 7K R348 75R 1 2 D73 NC ESD 0402 C279 2 2u 5V_VGA 5V 5V_VGA PC_AUDIO AUR0 PC_AUD...

Page 27: ...2 10uF 23 SOT C B E 1 3 2 Q48 3904 C381 10uF C257 560pF C285 1u 25V C361 NC 2 2uF C296 330n 50V C298 1u 25V C179 2 2uF R450 10K C284 1u 25V R449 10K C289 1u 25V NC C311 330n 50V 2 3 5 1 4 CON8 PC_AUDIO PHONE JACK 90D C280 1u 25V R280 100R R489 47K 1 1 2 2 3 3 4 4 CON11 CON4_2 54 C277 330n 50V C313 1u 25V R274 10R NC L20 FB220 3A C276 330n 50V C293 330p 50V NC C315 330p 50V NC 23 SOT C B E 1 3 2 Q5...

Page 28: ...RSEORF 56 VDDC 57 VSS 58 PBVAL 59 SBYTE 60 SRDT 61 SRCK 62 VSS 63 VDDC 64 VDDS 1 TSMDO 2 XSEL1 3 XSEL0 4 VSS 5 SLADRS1 6 SLADRS0 7 AGC_I 8 S_INFO 9 AGCCNTI 10 AGCCNTR 11 CKI 12 TNSCL 13 VDD33 14 TNSDA 15 VSS 16 VDDC 17 PLLVSS 18 X0 19 X1 20 PLLVDD 21 FIL 22 AD_AVDD 23 AD_AVSS 24 AD_VREFP 25 AD_VREFN 26 AD_VREF 27 ADQ_AIN 28 ADQ_AIP 29 ADI_AIN 30 ADI_AIP 31 AD_DVSS 32 AD_DVDD 33 VSS 34 DR1VDD 35 VD...

Page 29: ... 13 OLT 14 HVG 15 VBOOT 16 IC3 VCC2 C36 R98 R99 C37 C31 R92 R109 C39 R104 R102 R103 R110 VA 1 2 4 3 P3 2 3 1 U2 1 2 L7 EC30 6 EC12 VA 1 2 L8A EC15 12V 24V R105 5 12V 24V 1 2 3 4 CON3 1 EC3 1 FG1 1 FG3 1 FG4 1 FG2 R101A 2 R120 R121 1 2 D6 1 2 D10 IC_8 1 FG7 1 FG9 T2 C45 1 2 D14 1 2 D14A 1 2 D15 1 2 D15A LED 1A 0 6A MEGMEET ZhuHua MIP390D XXX 3 T2C 4 T2D 1 FG5 1 FG6 R120A R120B LED R104A C36A AA1 R1...

Page 30: ... 1 3 4 BG1 N L C7 1 2 4 3 L2 1 2 CON1 1 2 3 Q2 C11 1 2 3 4 5 6 7 8 IC1 C1 C3 C10 6 7 9 8 RT1 380V EC5 C8 C4 1 2 D1 VCC1 R2 R4 R3 R5 R7 R28 R22 R12 R17 R8 R1 R6 R34A R44 R43 R42 R13 F1 EC1 VH R34 RT 1 2 L10 1 2 D2 pfc_d SZV IC1_1 1 2 4 3 FL1 L4 N C7A LABEL LABX C44 VCC DRV GND ZCD CS Ct Ctrl FB MEGMEET ZhuHua MIP390D XXX CY4 4A 600V 1 2 D1A 1 2 D1B 1 2 L11 1 2 ZR2 ...

Page 31: ...404 R409 R408 R404 R403 R402 2 3 1 U401 C401 Vb Vb 1 2 D402 1 3 2 Q402 R405 1 3 2 Q403 R411 R413 R406 1 2 D401 1 3 2 Q401 R401 BL ON R414 1 3 2 Q407 R415 1 3 2 Q406 R416 MIP390D JP4 R417 1 2 3 4 5 CON6 R412A R410A 1 3 2 Q405A 1 3 2 Q404A R411A R413A R407A 1 2 D402A 1 2 D401A LED1 LED3 LED4 Vb Vb LED3 LED LED3 LED 1 2 3 4 5 CON7 LED4 LED LED4 LED 1 2 3 4 5 CON8 R408A R417A R404A 12V R422 1 2 Z401 R...

Page 32: ...9 R9 R64 R52 R25 R51 R26 R89 1 2 L8 C18 C19 EC7 1 3 2 Q5 1 2 D12 C20 EC6 1 2 D9 1 2 D13 C21 CY10 G D EC10 R66 R65 C17 R86 R68 R80 R56 R84 2 3 1 U1 2 1 4 5 6 9 5VSB 5VSB 5VSB 5VSB 5VSB 12V 5V 5V PS ON PS ON EC2 1 2 D3 R75 1 2 4 3 P2 1 2 4 3 P1 1 2 3 Q10 R54 ON R47 1 2 3 4 5 6 7 8 9 10 11 12 13 CON2 380V EC9 MEGMEET REV 1 0 ON P1 4 P1 3 P1 3 P1 4 1 2 3 Q18 R24A EC11 IC2_VCC EC8 T1 R112 R72 C68 R113 ...

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