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Altek AELT27A1, Service Manual

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Altek AELT27A1 Service Manual Download Page 2

27’’ LCD TV Color Monitor                                                                             ALTEK AELT27A1 

 

2

Revision List 

 

Version 

Release Date 

Revision history 

TPV Model 

A00 Jun.-21-2006 

Initial 

Release  EFF5MTNBC3ALTMP 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for AELT27A1

Page 1: ...1 Main Board 61 7 2 Power Board 63 7 3 IR Board 66 7 4 DC DC Board 67 7 5 Earphone Board 68 8 Block Diagram 69 8 1 Main Board 69 8 2 Power Board 70 8 3 Exploded View 71 9 Schematic Diagram 73 9 1 Mai...

Page 2: ...27 LCD TV Color Monitor ALTEK AELT27A1 2 Revision List Version Release Date Revision history TPV Model A00 Jun 21 2006 Initial Release EFF5MTNBC3ALTMP...

Page 3: ...me 8ms View Angle CR 20 H 176 V 176 Display colors 16 7 million Lamp Type Life 60000 hr type LCD Panel Color Temperature Cool Warm Video Inputs AV S VIDEO Component Scart RGB Composite HDMI Audio Outp...

Page 4: ...27 LCD TV Color Monitor ALTEK AELT27A1 4 2 1 The Use of Remote Control...

Page 5: ...27 LCD TV Color Monitor ALTEK AELT27A1 5 2 2 The Use of Teletext...

Page 6: ...27 LCD TV Color Monitor ALTEK AELT27A1 6 2 3 Front Panel Control Knobs...

Page 7: ...27 LCD TV Color Monitor ALTEK AELT27A1 7 2 4 OSD Operations...

Page 8: ...27 LCD TV Color Monitor ALTEK AELT27A1 8...

Page 9: ...27 LCD TV Color Monitor ALTEK AELT27A1 9...

Page 10: ...27 LCD TV Color Monitor ALTEK AELT27A1 10...

Page 11: ...27 LCD TV Color Monitor ALTEK AELT27A1 11...

Page 12: ...27 LCD TV Color Monitor ALTEK AELT27A1 12...

Page 13: ...27 LCD TV Color Monitor ALTEK AELT27A1 13...

Page 14: ...27 LCD TV Color Monitor ALTEK AELT27A1 14 2 5 How to Connect 1...

Page 15: ...27 LCD TV Color Monitor ALTEK AELT27A1 15...

Page 16: ...27 LCD TV Color Monitor ALTEK AELT27A1 16...

Page 17: ...27 LCD TV Color Monitor ALTEK AELT27A1 17...

Page 18: ...ure firm grounding The connector information is as follow 1 6 11 15 5 10 15 Pin Color Display Signal Cable Pin No Description 1 Red Video 2 Green Video 3 Blue Video 4 N C 5 GROUND 6 Red Video Ground 7...

Page 19: ...Hz Hz 4 3 16 9 720 400 31 47 70 08 NEG POS YES YES YES YES 640 480 31 50 60 00 NEG NEG YES YES YES YES 640 480 37 50 75 00 NEG NEG YES YES YES YES 640 480 37 86 72 81 NEG NEG YES YES YES YES 800 600 3...

Page 20: ...901 BD901 D901 D902 NG Replace F901 or BD901 or D910 or D902 OK Check IC981 D928 12V Check IC901 Q901 NG Replace IC981or D928 Check Q924 IC924 ON OFF signal NG Replace Q924 or IC924 OK OK Check T951 O...

Page 21: ...o 4 1 Check 3 3V_SB Replace U701 OK NG Check PWR_ON signal OK NG Check Q704 Q705 Q706 Q709 NG Replace Q704 or Q705 or Q706 or Q709 Check U32 U21 NG Replace U32 or U21 Check I2 C communication OK Check...

Page 22: ...LED indicator green Check the source OK Reset source NG Check LVDS cable NG Reset LVDS cable OK Check 24V power supply NG Return to 4 1 OK Check main board power supply OK Check U21 NG Replace U21 OK...

Page 23: ...et source NG Check signal filter circuit NG Replace the filter or inductance OK NG RF signal Check TV system setup OK Check Tuner Replace Tuner AV SCART1 2_CVBS signal S video SCART2_Y C signal Check...

Page 24: ...he filter or inductance OK NG SIF signal Check TV system setup OK Check Tuner Replace Tuner AV AIR1 AIR2 PC signal Check Audio decoder MSP3410G U4 NG Replace U4 OK Check U63 U61 NG Replace U63 or U61...

Page 25: ...7A1 25 4 6 Key Board OSD is unstable or not working Is Key Pad Board connecting normally Connect Key Pad Board Is Button Switch normally Replace Button Switch Y N N Is Key Pad Board Normally Replace K...

Page 26: ...ttern1 on Chroma2225 Chroma7120 s lens must aim at the center of Pattern1 showed on the LCD TV s screen The distance of Chroma7120 s lens and the center of screen is 20cm 1cm ENTER FACTORY After orien...

Page 27: ...key on Chroma7120 to switch xyY mode Use black sleeve on Chroma7120 s lens to ensure no external ray Set Pattern104 on Chroma2225 Adjust SCALAR RB GB BB value to make sure the brightness is the lowest...

Page 28: ...27 LCD TV Color Monitor ALTEK AELT27A1 28 Fig 4 Fig 5 Fig 6...

Page 29: ...ange the input signal to 0 white level performance Firstly press the brightness from 50 to 0 and make sure the Y is not changed Secondly change the input signal to 32 GRAYS performance and make sure t...

Page 30: ...052T 1186 SMALL TAPE 052T 1211 B ADHESIVE TYPE 052T6020 9 PROTECT FILM 052T6025 15128 MYLAR 085T 690 1 SHIELD MAIN 089T408A18N IS POWER CORD WALL OUT FOR ITALY 092TB1JX1A31GF BATTERY 095T8014 2514 HA...

Page 31: ...ID2 KEY COVER 033T4825 VJ L ID2 FUNC KEY 033T4826 VJ L ID2 COVER POWER KEY 033T4827 1 C ID2 LENS 033T4828 ED C REMOTE LENS 033T4832 KG L CLIP CABLE 033T6302 14 C PC PLATE ON TOP 034T1556 GM 1L REAR CO...

Page 32: ...01UF 250VAC MURATA C904 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C904 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C903 065T306M1022BM Y1 CAP 001UF 250VAC MURATA C903 065T306M1022BM Y1 CAP 001UF 250VAC...

Page 33: ...3T 253155 T CHOKE COIL L923 073T 253155 LS CAO5005FL L922 073T 253155 LS CAO5005FL T951 080LL26T 2 LG X FMR T951 080LL26T 2 TG X FMR T921 080LL26T 3 TG XFMR D943 093T1020 752T UF4003PT D922 093T1020 7...

Page 34: ...8 2 HEAT SINK X20 093T 2253B J 14 31818MHZ 85C X50 093T 2258B J 24 576MHZ 20PF 49US X40 093T 2279B 28 32MHZ 14PF 49US X30 093T 2281B 10 000MHZ 30PF 49US Q19T 553700 SPRING SMTFF5BMTACTP MAIN BOARD SMT...

Page 35: ...60247 DIODE FME 220A TO 220 SANKEN 0M1T1730 10128 SCREW M3X10 012T 372 2 MICA Q901 057T 667 17 IRFP460APBF T0 247AC Q901 057T 667 18 STW20NM50 Q901 057T 667 19 2SK3523 01R Q941 057T 667 21 STP10NK70Z...

Page 36: ...7K OHM 5 1 8W R932 061V0805510 2F CHIP 51K OHM 1 10W R953 061V0805563 CHIP 56K OHM 1 8W R952 061V0805682 CHIP 6 8KOHM 5 0805 1 8W R903 061V0805683 CHIPR 68K OHM 5 1 8W R925 061V0805689 CHIP 6 8OHM 5...

Page 37: ...L4148 BY PANJIT D923 093T 6432P LL4148 BY PANJIT D924 093T 6432P LL4148 BY PANJIT D925 093T 6432P LL4148 BY PANJIT D926 093T 6432P LL4148 BY PANJIT D929 093T 6432P LL4148 BY PANJIT D944 093T 6432P LL4...

Page 38: ...1 TO 252 U709 056T 563 31 AZ1117D 1 8E1 TO 252 U700 056T 563 44 AME8815BEGT 250Z SOP 223 U704 056T 563 44 AME8815BEGT 250Z SOP 223 U710 056T 585 9 IC AP1117E50LA ANACHIP U701 056T 585 4A AP1117E33LA U...

Page 39: ...100OHM 1 15W 8P4R RN212 061V 125101 8 CHIP ARRAY 100OHM 1 15W 8P4R RN211 061V 125101 8 CHIP ARRAY 100OHM 1 15W 8P4R RN210 061V 125101 8 CHIP ARRAY 100OHM 1 15W 8P4R RN200 061V 125220 8 CHIP ARRAY 22...

Page 40: ...R610 061V0603000 CHIPR 0OHM 5 1 10W R401 061V0603000 CHIPR 0OHM 5 1 10W R148 061V0603000 CHIPR 0OHM 5 1 10W R149 061V0603000 CHIPR 0OHM 5 1 10W R150 061V0603000 CHIPR 0OHM 5 1 10W R155 061V0603000 CH...

Page 41: ...CHIPR 1K OHM 5 1 10W R524 061V0603102 CHIPR 1K OHM 5 1 10W R117 061V0603102 CHIPR 1K OHM 5 1 10W R116 061V0603102 CHIPR 1K OHM 5 1 10W R112 061V0603102 CHIPR 1K OHM 5 1 10W R328 061V0603103 CHIPR 10K...

Page 42: ...5 1 10W R119 061V0603222 CHIPR 2 2K OHM 5 1 10W R726 061V0603223 CHIP 22KOHM 1 16W R721 061V0603223 CHIP 22KOHM 1 16W R719 061V0603223 CHIP 22KOHM 1 16W R718 061V0603223 CHIP 22KOHM 1 16W R637 061V060...

Page 43: ...KOHM 5 1 10W R302 061V0603472 RST CHIPR 4 7KOHM 5 1 10W R303 061V0603472 RST CHIPR 4 7KOHM 5 1 10W R304 061V0603472 RST CHIPR 4 7KOHM 5 1 10W R315 061V0603472 RST CHIPR 4 7KOHM 5 1 10W R316 061V060347...

Page 44: ...0W R722 061V0805302 CHIP 3K OHM 1 10W C633 065T0603101 32 CHIP 100PF 50V X7R C632 065T0603101 32 CHIP 100PF 50V X7R C629 065T0603101 32 CHIP 100PF 50V X7R C615 065T0603101 32 CHIP 100PF 50V X7R C610 0...

Page 45: ...MLCC 0603 0 1UF K 16V X7R C422 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C424 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C429 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C431 065T0603104 12 MLCC 0603 0 1UF...

Page 46: ...V X7R C604 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C605 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C628 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C705 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C708 065T0...

Page 47: ...MLCC 0603 0 1UF K 16V X7R C278 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C279 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C280 065T0603104 12 MLCC 0603 0 1UF K 16V X7R C281 065T0603104 12 MLCC 0603 0 1UF...

Page 48: ...X7R 0603 C521 065T0603223 32 CHIP 0 022UF 50V X7R 0603 C612 065T0603223 32 CHIP 0 022UF 50V X7R 0603 C614 065T0603223 32 CHIP 0 022UF 50V X7R 0603 C620 065T0603223 32 CHIP 0 022UF 50V X7R 0603 C624 06...

Page 49: ...P 680PF 50V NPO C526 065T0603681 31 CHIP 680PF 50V NPO C504 065T0603681 31 CHIP 680PF 50V NPO C765 065T0805105 12 1UF 10 6V X7R C430 065T0805105 12 1UF 10 6V X7R C766 065T0805105 12 1UF 10 6V X7R C638...

Page 50: ...12220 3 SMD EC 22UF 16V 85C C714 067T 312220 3 SMD EC 22UF 16V 85C C718 067T 312220 3 SMD EC 22UF 16V 85C C721 067T 312220 3 SMD EC 22UF 16V 85C C729 067T 312220 3 SMD EC 22UF 16V 85C C733 067T 312220...

Page 51: ...T 56G301 EA CHIP BEAD 300 OHM 0805 L30 071T 56G301 EA CHIP BEAD 300 OHM 0805 L704 071T 56G301 EA CHIP BEAD 300 OHM 0805 L707 071T 56G301 EA CHIP BEAD 300 OHM 0805 L615 071T 56G301 EA CHIP BEAD 300 OHM...

Page 52: ...10G QI C12 100 MICRONAS U3 056T 638 2 AN15857A QFH064 P 1414H Q10 057T 417 4 CHIP PMBS3904 BY PHILIPS Q11 057T 417 4 CHIP PMBS3904 BY PHILIPS Q2 057T 417 4 CHIP PMBS3904 BY PHILIPS Q3 057T 417 4 CHIP...

Page 53: ...603392 CHIP 3 9K OHM 1 16W R81 061V0603392 CHIP 3 9K OHM 1 16W R22 061V0603471 CHIPR 470 OHM 5 1 16W R60 061V0603471 CHIPR 470 OHM 5 1 16W R46 061V0603471 CHIPR 470 OHM 5 1 16W R42 061V0603471 CHIPR 4...

Page 54: ...V0603912 CHIP 9 1K OHM 1 16W R101 061V0805220 CHIP 22 OHM 5 0805 1 8W C11 065T0603101 31 CHIP 100PF 50V NPO C99 065T0603101 32 CHIP 100PF 50V X7R C130 065T0603102 31 CHIP 1000PF 50V NPO C129 065T06031...

Page 55: ...5T0603471 31 CHIP 470PF 50V NPO C103 065T0603471 31 CHIP 470PF 50V NPO C97 065T0603471 32 CHIP 470PF 50V NPO C72 065T0603471 32 CHIP 470PF 50V NPO C82 065T0603471 32 CHIP 470PF 50V NPO C77 065T0603473...

Page 56: ...B C70 067T 312100 3 SMD EC 10UF 16V 85C B C85 067T 312100 3 SMD EC 10UF 16V 85C B C94 067T 312100 3 SMD EC 10UF 16V 85C B C141 067T 312100 3 SMD EC 10UF 16V 85C B C140 067T 312100 3 SMD EC 10UF 16V 85...

Page 57: ...601 BEAD 600 OHM L29 071T 56U601 BEAD 600 OHM L28 071T 56U601 BEAD 600 OHM L24 071T 56U601 BEAD 600 OHM L23 071T 56U601 BEAD 600 OHM L22 071T 56U601 BEAD 600 OHM L31 071T 56U601 BEAD 600 OHM L32 071T...

Page 58: ...2F CHIP 20K OHM 1 16W 1 R5 061V0603330 1F Chipr 3 3KOHM 1 1 10W R2 061V0603390 0F CHIP 390 OHM 1 16W R6 061V0603680 1F CHIP 6 8KOHM 1 1 10W R9 061V1206221 CHIP 220 OHM 5 1 8W R12 061V1206332 CHIP 3 3K...

Page 59: ...1 6W R937 061T 60168152T 680 OHM 2 1 6W L951 071T 55 23 BEAD CORE L921 071T 55 23 BEAD CORE L921 071T 55 23 S FERRITE BEAD K TYPE L951 071T 55 23 S FERRITE BEAD K TYPE F901 084T 55 3 FUSE 5A 250V F90...

Page 60: ...32 NS LM3485 Q801 057T 763 3 AO4411L SO 8 BY AOS SMT Q801 057T 763 4 RSS050P03 R803 061V0603200 2F CHIP 20K OHM 1 16W 1 R801 061V0603360 2F chip 36k ohm 1 10w 1 R802 061V0603620 2F CHIP 62K OHM 1 16W...

Page 61: ...27 LCD TV Color Monitor ALTEK AELT27A1 61 7 PCB Layout 7 1 Main Board...

Page 62: ...27 LCD TV Color Monitor ALTEK AELT27A1 62...

Page 63: ...27 LCD TV Color Monitor ALTEK AELT27A1 63 7 2 Power Board 0...

Page 64: ...27 LCD TV Color Monitor ALTEK AELT27A1 64...

Page 65: ...27 LCD TV Color Monitor ALTEK AELT27A1 65...

Page 66: ...27 LCD TV Color Monitor ALTEK AELT27A1 66 7 3 IR Board...

Page 67: ...27 LCD TV Color Monitor ALTEK AELT27A1 67 7 4 DC DC Board...

Page 68: ...27 LCD TV Color Monitor ALTEK AELT27A1 68 7 5 Earphone Board...

Page 69: ...y A29040BL EM6A9320BI 5MG DDR Power Board Built in Inverter 27 32 Panel DC Output AC 110 240 V SAA7117A Video Decoder Panasonic Selector AN15857A Sil9011 HDMI Video 24bits R G B SCART1 CVBS SCART2 CVB...

Page 70: ...27 LCD TV Color Monitor ALTEK AELT27A1 70 8 2 Power Board 27 TV Power Board...

Page 71: ...27 LCD TV Color Monitor ALTEK AELT27A1 71 8 3 Exploded View...

Page 72: ...MID 9 750TVMH0B11 11 PANEL 31 033T4832 KG L CLIP CABLE 10 015T8175 1 MAIN FRAME 32 0M1T 140 10120 SCREW M4X10 11 HJPFA60A8P HEADPHONE JACK BOAED 33 N A N A 12 W33T6381CGM 1L COVER_CARD READER 34 0M1T1...

Page 73: ...NC VSS SDA SCL VCLK VCC DVCC R136 1K EFF5MTNBC2THT D106 BAV99 3 1 2 D109 MLL5232B 5 6V R129 4 7K C132 0 1uF C1 C2 C3 C4 C5 P10 DVI_V 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 31...

Page 74: ...GND VEE R116 1K FB11 150 OHM 1 2 5V_SB VGA_HSIN 4 PCR R118 1K ST5V SCART_B 8 C113 0 1uF R119 2 2K 1 16W C118 100pF R105 75 R104 75 C144 100pF VGAHS C102 10uF 16V R150 0 1 16W D100 BAT54C 1 2 3 VGA_SCL...

Page 75: ...E CLKE BA0 BA1 MPUGPIO0 MPUGPIO1 VDDR VSSR VDDM VDDM VDDM VDDM VDDM VDDM VDDM VDDM VDDM VDDM VDDM VDDM VSSM VSSM VSSM VSSM VSSM VSSM VSSM VSSM VSSM VSSM VSSM VSSM VDDM VSSM RESET TESTMODE V5SF SDA SCL...

Page 76: ...24 P_25 P_26 P_27 P_28 P_29 P_30 P_31 P_32 P_33 P_34 P_35 P_36 P_37 P_40 P_41 VDDC VSSC MLF1 PLF2 AIN_HS AIN_VS PAVSS2 PAVDD2 PAVSS1 PAVDD1 P_38 P_39 P_42 P_43 P_44 P_45 P_46 P_47 P_48 P_49 P_50 P_51...

Page 77: ...QS1 R201 51 1 16W TP202 TP_T_C30 DQ22 MD19 MD10 DDQS1 DDQS0 C209 0 01uF DQ15 DQ22 DQ7 RN207 22 1 16W 1 2 3 4 8 7 6 5 DQ30 MD31 DQ8 TV2765W 4E 1 SVP EX_DDR AOC Top Victory Electronics Co Ltd B 5 12 Wed...

Page 78: ...AN5 P10_6 AN6 P10_7 AN7 P0_0 AN0_0 Avss P10_1 AN1 Vref Avcc P9_7 ADTRG P9_6 P9_5 Vss R354 NC 5V 1_CPU R394 4 7K R352 100 AD0 R379 4 7K R318 33 R351 NC TP304 A4 C312 100uF 16V C304 10uF 16V A13 R347 N...

Page 79: ...150 OHM 1 2 RX1 RX_0 3V3S RX_2 V44 1pF C404 0 1uF RX_C C420 1000pF 5V DHS_2EX 4 8 IIS_WS C419 1000pF R425 4 7K 1 16W RIN0 RX_DDC_SCL R415 68 1 16W V40 1pF C425 1000pF SC1 2 6 12 RX2 CI2CA P40 HDMI_co...

Page 80: ...2 VDDD3 VDDD4 VDDD5 VDDD6 TRST TCK TMS TDO TDI EXMCLR AMXCLK ALRCLK ASCLK AMCLK CLKEXT VSSD1 VSSD2 VSSD3 VSSD4 VSSD5 VSSD6 VSSD7 VSSD8 VSSD9 VSSD10 VSSD11 VSSD12 VSSD13 LLC LLC2 RTS0 RTS1 RTCO INT_A R...

Page 81: ...4 NC U63 PT2308S 1 8 2 7 3 6 4 5 OUT1 VDD IN1 OUT2 IN1 IN2 GND IN2 C623 2 2uF 16V L600 0 OHM R634 0 1 10W R625 10K 1 16W C626 0 47uF C622 2 2uF 16V R629 47K 1 16W R645 100 C650 0 01uF C653 0 1uF R643...

Page 82: ...7 10uF 35V U710 3 2 1 4 VI VO GND 4 V20SW 5V_SB ST5V R726 22K 1 16W 12VP C749 47uF 16V Q700 AO4411 1 2 3 4 8 7 6 5 S1 S1 S1 G1 D1 D1 D1 D1 C753 10uF 16V 5VSW L700 300 OHM C756 0 1uF TV2765W 4E 1 POWER...

Page 83: ...a U704 3 2 1 4 VI VO GND 4 C704 22uF 16V C733 22uF 16V C712 47uF 16V C737 0 1uF C730 0 1uF C761 10uF 16V L720 300 OHM TV2765W 4E 1 POWER_2 AOC Top Victory Electronics Co Ltd B 11 12 Wednesday January...

Page 84: ...5W 4E 1 0 ENERGY STAR AOC Top Victory Electronics Co Ltd A 12 12 Wednesday January 04 2006 Variant Name Title Size Document Number Rev Date Sheet of KEY_AD 2 6 Option C702 10uF VGAHS 2 6 PWR_ON 6 10 O...

Page 85: ...27 LCD TV Color Monitor ALTEK AELT27A1 85 9 2 Power Board...

Page 86: ...27 LCD TV Color Monitor ALTEK AELT27A1 86...

Page 87: ...NC TV2765W 4E 1 0 ENERGY STAR AOC Top Victory Electronics Co Ltd A 12 12 Wednesday January 04 2006 Variant Name Title Size Document Number Rev Date Sheet of KEY_AD 2 6 Option C702 10uF VGAHS 2 6 PWR_O...

Page 88: ...T1CVBS V12SW AV1_CVBS R86 75 L20 150 OHM V9A1 SCT2_LI 1 C29 0 1uF HD_G1 SDA 3 R39 470 1 16W R48 10 1 16W TAL1 3 HD_G 1 AV1_R AV1_Y R33 33 2W Q8 PMBS3904 3 2 1 TAL2 3 C31 0 1uF C42 10uF V5A C48 2 2uF...

Page 89: ...T_LO 1 CM_R1 R85 1K V5A AXTALO Option U4 MSP3410G 64 1 2 3 4 5 7 6 8 9 10 11 12 13 14 15 16 22 17 18 19 20 21 23 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53...

Page 90: ...AELT27A1 90 9 4 Earphone Board PRE_L EAR_R FB3 BEAD FB4 BEAD C6 0 0022uF FB1 BEAD J1 PHONEJACK 1 5 6 3 7 2 4 C3 0 0022uF Gnd case 1 FB2 BEAD C4 0 0022uF C1 470pF EAR_L PRE_R FB1 4 600 OHM C5 0 0022uF...

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