AOC e941 Series Скачать руководство пользователя страница 40

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Service Manual AOCe941series

Maintenance Trouble treatment

9.1 Maintainability Requirement

1. Voltmeter. & digital multimeter
2. Oscilloscope.
3. Pattern

Generator.

4. DDC

Tool

with

Compatible

Computer.

5. Alignment

Tool.

6. LCD

Color

Analyzer.

7. Service

Manual.

8. User

Manual.

9. repair tools etc

9.2 Trouble Shooting

Main Board---

No Power

No power

Press power key and look if
the picture is normal

Please reinsert and make sure the AC
100-240V is normal

Reinsert or check the power section

Check 5V-CN404, 3.3V-U404-2;

1.8V-Q409/Q410,Panel-Vcc-Q405

Check X401 waveform

Replace U402/U401

Replace X401

Check&replace
CN404,U404,Q409,Q410,Q405

Check flow chart

For the no power

Downloaded from ManualMonitor.com Manuals

Содержание e941 Series

Страница 1: ...Service Manual AOCe941Series 1 LCD Custom AOC Model e941Series The manual adaptation models AOC e941VA e941SA e941S Downloaded from ManualMonitor com Manuals...

Страница 2: ...ease Date Revision History Model TPV Model No A00 May 30 2010 Initial Release e941VA T995NTNBWVK2PNJ e941SA T995NSNCWVA1UNJ e941S T992NSN8WVA1NNJ A01 Aug 26 2010 Add new Models e941S T9A2NS2DWVA4QNE T...

Страница 3: ...or 12 4 7 Optical Specifications 12 5 Block diagram 13 5 1 LCD Block diagram 13 5 2 Main board 1 2 Block diagram 13 5 3 Power board Block diagram 14 5 4 LCD software flow chart 15 6 Circuit Schematic...

Страница 4: ...pin DVI 24pin USB HUB 1 upstream 1 downstream 2 0 Audio in 3 5mm Display Colors 16 7M Colors Dot Clock 136 75MHz Max Resolution 1440 x 900 75Hz Plug Play VESA DDC2B DDC CI Power Consumption ON Mode 25...

Страница 5: ...Hz 70 087Hz 720 400 31 469kHz 70 087Hz Mac mode 832 624 49 725kHz 74 50Hz SVGA 800 600 35 16kHz 56 25Hz 800 600 37 879kHz 60 317Hz 800 600 48 07kHz 72 188Hz 800 600 46 875kHz 75Hz XGA 1024 768 48 363k...

Страница 6: ...n ON OFF the moniteor and power indicator Green Blue and Amber Orange 2 Menu Enter Active main menu while no OSD display enter next level on main menu or sub menu status or enter last level on adjustm...

Страница 7: ...utton may select item you wish to enter 4 Press MENU button to enter and press Left button or Right button to adjust item you select 5 Press EXIT button may back previous menu 6 Repeat steps 2 5 to ad...

Страница 8: ...ector layout 1 5 6 10 11 15 3 2 DVI Connector Pin No Description Pin No Description 1 TMDS Data 2 13 TMDS Data 3 2 TMDS Data 2 14 5V Power 3 TMDS Data 2 4 Shied 15 Ground for 5V 4 TMDS Data 4 16 Hot P...

Страница 9: ...Service Manual AOCe941Series 9 3 3 USB Audio in port Bottom View Top View This section to e941VA do show that other models will be a slight trade off Downloaded from ManualMonitor com Manuals...

Страница 10: ...ons colors The converter module for the Backlight Unit is not built in 4 1 General Specifications 4 2 Electrical Absolute Ratings Item Symbol Min Typ Max Unit Power Supply Voltage Vcc 0 3 5 6 V LED DC...

Страница 11: ...Service Manual AOCe941Series 11 4 4 TFT LCD Module Block Diagram 4 5 LCD module input terminal pin assignment Downloaded from ManualMonitor com Manuals...

Страница 12: ...AOCe941Series 12 4 6 LED Connector Pin No Signal name 1 LED1 2 LED2 3 LED3 4 LED4 5 VLED Voltage in 6 VLED Voltage in 7 LED5 8 LED6 9 LED7 10 LED8 4 7 Optical Specifications Downloaded from ManualMoni...

Страница 13: ...onnector CN101 EEPROM PM25LD020C U402 H sync V sync Key Board Control CN401 402 Voltage converter 5V 5V 3 3V 1 8V DVI Connector CN102 DC AC inverter AC DC 5V 12V Power Board Main Board Key board PC VG...

Страница 14: ...out30V CN801 Switching MOS Q801 AO4828 AC input 100 240V CN803 Current Sense LED converter Part Power adapter Part Amplifier CN902 12V Audio in On off DIM PWM Control IC801 TA9690 12V Power Converter...

Страница 15: ...tial_MCU Device while InputTiming ModeHandler MenuHandler DebugHandler if standby mode Brightness Contrast Language InputType InputTimingStableCounter OsdCounter PowerDownCounter LED turn on Show powe...

Страница 16: ...SCALER 04 SCALER Adj_BACKLIGHT on_BACKLIGHT Audio_EN Audio_DET PS_EN Panel_ON PB 0 9 PA 0 9 R0 R0 SOG_DET G0 G0 B0 B0 AHS0 AVS0 DDCSCL1 DDCSDA1 EDID_WP VGA_CABLE_DET RXC RXC RX2 RX2 RX1 RX1 RX0 RX0 DD...

Страница 17: ...103 AOZ8902CIL 1 2 3 4 5 6 CH1 VN CH2 CH3 VP CH4 R115 4K7 1 16W 5 R102 100R 1 16W 5 C111 NC 22pF 50V G0 5 ESD_VGA AHS0 5 RIN0 R112 75R 1 16W 1 VSIN0 C103 5PF 50V R0 BIN0 R121 100R 1 16W 5 DDCSDA1 5 DD...

Страница 18: ...ND GND Q101 NC DCLK C117 100NF 25V DAT2 R134 10R 1 16W 5 ESD_DVI R130 10K 1 16W 5 D102 BAV70 3 1 2 ESD_DVI R128 100R 1 16W 5 5V EDID_WP 3 5 R137 10R 1 16W 5 HPD R132 4K7 1 16W 5 RXC 5 DCLK DDC_WP RX2...

Страница 19: ...BS3904 C703 100NF 25V U704 3 2 1 VIN VOUT GND C716 10uF 50V R712 NC DUAL D OTS B 7 7 Monday January 25 2010 715G3737 M0D POWER G3737 M0D 000 0H4K 10 100125 Variant Name OEM MODEL Size Rev Date Sheet o...

Страница 20: ...63 64 102 101 100 99 98 97 96 95 94 93 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 67 66 65 128 127 126 125 124 123 122 121 120 119 118 117 116 115 114 113 112 111 110 1...

Страница 21: ...4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 PB8 LVBCKM LVBCKM RXE1 PB5 FB409 120 OHM 1 2 LVB0M RXE1 LVB2P PA3 PB 0 9 CN409 NC CONN 2 4 6 8 10 12 14 16 18 20 22 24 26 28...

Страница 22: ...1 8 DDC_WP 5VCC BIN T5P 5 POWER POWER Panel_ID Mute BL_ADJ BL_ON Volume 5V 5VCC DSUB_5V VCC3 3 VCC1 8 ESD_5V T5M T2P ESD_5V T1P E A 3 7 Friday May 21 2010 715G3225 1 1 0 COVER G3225 A 2 X 8 090311 OEM...

Страница 23: ...VGA_G E B 4 7 Wednesday December 02 2009 715G3225 1 1 0 COVER G3225 A 2 X 8 090311 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Victory Electronics Co Ltd Key Component H_Sy nc VGA_G...

Страница 24: ...5VCC Volume 5 R705 100R 1 16W 5 VCC3 3 R707 NC VCC3 3 VCC3 3 5 BL_ON 5 SOT223 U702 NC AME8810 AEGTZ 0 6A 3 3V 1 2 3 4 GND VOUT heat sink VIN 4 C709 0 1UF 16V 5V VCC1 8 5 U704 AME8815BEGT180Z 1 2 3 4 G...

Страница 25: ...SI LED_ORANGE C450 NC VCC1 8 7 LED_ORANGE CVDD_1 8 D405 NC RLZ5 6B R468 4K7 1 16W 5 C416 0 1UF 16V C443 4 7uF 16V C0805 VCC3 3 VCC3 3 LEDB C433 0 1uF16V TOUCH_PANEL POWER_KEY R408 NC FB405 NC 300OHM C...

Страница 26: ...nics Co Ltd Key Component R435 22K 1 16W 5 R434 220 OHM 1 4W R1206 TCLK1P 5 C441 0 1UF 16V T0M 2 TCLK1M R433 10K 1 16W 5 5V T4M C419 0 22uF16V T6P 5 T4M TCLK1M 5 C449 100uF25V T5P 5 T6M R421 220 OHM 1...

Страница 27: ...K D901 D906 1 2 ZD901 TZX18B 1 2 MUTE R919 150R 1 8W 5 C903 1000pF NR901 NTCR R917 33ohm 1 4W 5 L905 Coil D906 SP1060 1 2 3 R925 9K1 1 10W 1 C915 0 01uF IC901 LD7576GS 1 2 3 4 5 6 7 8 RT COMP CS GNDOU...

Страница 28: ...M 1 1 4W C805 0 47uF 16V 150K LNPC95361XYC1 3 B 1 3 Monday January 04 2010 715G3918 P0F ODM MODEL 3 CONVERTER G3918 P0F 000 X 2 091229 OEM MODEL Size Rev Date Sheet of TPV MODEL PCB NAME T P V Top Vic...

Страница 29: ...5 Q608 NC R610 0R05 1 10W CN602 CONN 1 2 3 4 R603 10K 1 10W 5 LOUT C602 0 47uF 16V C613 100N 50V R607 27K 1 10W 5 C606 0 47uF 16V C612 100N 50V C601 0 47uF 16V C610 100P 50V R601 NC C603 0 47uF 16V R6...

Страница 30: ...Service Manual AOCe941Series 30 6 6 Key Board 715G4007 K01 Just for your reference Downloaded from ManualMonitor com Manuals...

Страница 31: ...Service Manual AOCe941Series 31 7 Explore Views Downloaded from ManualMonitor com Manuals...

Страница 32: ...Service Manual AOCe941Series 32 Downloaded from ManualMonitor com Manuals...

Страница 33: ...Service Manual AOCe941Series 33 Downloaded from ManualMonitor com Manuals...

Страница 34: ...Service Manual AOCe941series 34 8 PCB Layout 8 1 MainBoard 1 715G3737 M01 Downloaded from ManualMonitor com Manuals...

Страница 35: ...Service Manual AOCe941series 35 Downloaded from ManualMonitor com Manuals...

Страница 36: ...Service Manual AOCe941series 36 Main Board 2 715G3225 1 2 Downloaded from ManualMonitor com Manuals...

Страница 37: ...Service Manual AOCe941series 37 Downloaded from ManualMonitor com Manuals...

Страница 38: ...Service Manual AOCe941series 38 8 2 PowerBoard 715G2892 P02 Downloaded from ManualMonitor com Manuals...

Страница 39: ...Service Manual AOCe941series 39 8 3 KeyBoard 715G4007 Downloaded from ManualMonitor com Manuals...

Страница 40: ...anual 9 repair tools etc 9 2 Trouble Shooting Main Board No Power No power Press power key and look if the picture is normal Please reinsert and make sure the AC 100 240V is normal Reinsert or check t...

Страница 41: ...eck CN101 RGB HS VS Check U402 U403 out Check Correspondent component OK NG NG NG NG OK OK OK Replace U401 Updata soft data OK NG Check connector Replace Panel White screen Measure Q404 base is low le...

Страница 42: ...k component R904 R932 Check T901 1 3 out Vcc Check D901 R909 C903 Check IC901 drive out Check MOS Q901pin G D Check replace IC901 Check R910 R938 Q901 T901pri Around component Check T901sub rectified...

Страница 43: ...heck Power Check main board After Power off check Q805 Q808 R804 C825 Check IC801 6pin RT waveform Check aroud component Replace IC801 Check IC801 out9 10pin Check Q802 waveform Check T801 out voltage...

Страница 44: ...sert the Power cord then press MENU the monitor will may enter Factory OSD Menu Then Press Factory OSD Menu will appear in the screen Check flow chart For the key board OSD is unstable or not working...

Страница 45: ...sary 1 Prepared the PC with Windows XP system DDC recording device 12V for figure below 2 Connect the DDC recording device and the PC through PC parallel port 3 setup Port95nt driver program to PC 4 s...

Страница 46: ...Service Manual AOCe941series 46 Downloaded from ManualMonitor com Manuals...

Страница 47: ...Service Manual AOCe941series 47 Downloaded from ManualMonitor com Manuals...

Страница 48: ...2nd source E09517 095G176J 10544 FFC CABLE 10 160 0 5 1 E09505 095G8014 5DH15 Wire harness 5P 2008 5P 2008 440MM 2nd source E09505 095G8014 5XH15 Wire harness 5P 2008 5P 2008 440MM 1 E09508 095G8014 6...

Страница 49: ...T901 080GL22T 3 S1 X FMR 490uH 2nd source CN901 087G 501 32 S AC SOCKET 1 CN901 087G 501 32 DL AC SOCKET DIP 3PIN 2PIN GROUND 2nd source CN601 088G 30214K DC PHONE JACK 5PIN 1 BD901 093G 50460 28 BRID...

Страница 50: ...source RJ816 061G12060007JY RST CHIPR MAX0R05 7A 1 4W YAGEO 1 RJ802 061G12060007JY RST CHIPR MAX0R05 7A 1 4W YAGEO 1 R923 061G1206101 JF RST CHIPR 100 OHM 5 1 4W FENGHUA 1 R912 061G1206101 JF RST CHIP...

Страница 51: ...X7R 2nd source C916 065G120610272K T CAP CHIP 1206 1000PF 500V X7R 2nd source C916 065G120610272K Y CAP CHIP 1206 1NF K 500V X7R 1 C917 065G120610272K Y CAP CHIP 1206 1NF K 500V X7R 1 C919 065G120610...

Страница 52: ...FR 1 S S 1OZ 2nd source E715 715G2892P01020001S POWER PCB 122X184X1 6MM FR 1 S S 1OZ 2nd source LNPCA9361XYY1J CONVERTOR BOARD G3918 P01 X X 5 100105 1 C813 067G 4151017KV EC 100uF 50V ED 8 12 2nd sou...

Страница 53: ...ST CHIP R 1 MOHM 1 1 8W 1 R825 061G1206000 JF RST CHIPR MAX0R05 1 4W FENGHUA 1 F801 061G12060004JF RST CHIPR MAX0R05 4A 1 4W FENGHUA 1 R801 061G1206308 JF RST CHIPR 0 3 OHM 5 1 4W FENGHUA 1 R802 061G1...

Страница 54: ...L 24KV 5A SOT23 6 AOS 1 U102 056G 662504 IC ESD AOZ8902CIL 24KV 5A SOT23 6 AOS 1 U101 056G1133 34 M24C02 WMN6TP 1 U105 056G1133 34 M24C02 WMN6TP 1 U402 056G2233 11 IC Pm25LD020C SCE SIOC 8 150mil 2M 1...

Страница 55: ...CHIPR 100 OHM 5 1 16W FENGHUA 2nd source R119 061G0402101 JF RST CHIPR 100 OHM 5 1 16W FENGHUA 2nd source R113 061G0402101 JF RST CHIPR 100 OHM 5 1 16W FENGHUA 2nd source R111 061G0402101 JF RST CHIP...

Страница 56: ...CHIP 100K 1 16W 5 TZAI YUAN 1 R715 061G0402104 JT RST CHIP 100K 1 16W 5 TZAI YUAN 1 R432 061G0402105 JF RST CHIPR 1MOHM 5 1 16W FENGHUA 1 R432 061G0402105 JT RST CHIP R 1Mohm 1 16W 5 TZAI YUAN 2nd sou...

Страница 57: ...HM 1 1 16W FENGHUA 2nd source R107 061G04027509FF RST CHIPR 75 OHM 1 1 16W FENGHUA 2nd source R120 061G04027509FT RST CHIP 75R 1 16W 1 1 R112 061G04027509FT RST CHIP 75R 1 16W 1 1 R107 061G04027509FT...

Страница 58: ...ce C713 065G040210425K T CAP CHIP 0402 0 1uF 25V X5R 1 C712 065G040210425K T CAP CHIP 0402 0 1uF 25V X5R 1 C707 065G040210425K T CAP CHIP 0402 0 1uF 25V X5R 1 C706 065G040210425K T CAP CHIP 0402 0 1uF...

Страница 59: ...HIP 0402 220nF K 16V X5R 1 C116 065G040222415K T CAP CHIP 0402 220nF K 16V X5R 1 C101 065G040222415K T CAP CHIP 0402 220nF K 16V X5R 1 C110 065G040247312K A 8 31HIP 0402 47nF K 16V X7R 2nd source C108...

Страница 60: ...B51AFRA7B9073 rear cover n941 for cmo led 1 J34G8B52AED 1B9073 stand 1 J34G8B53AED 1B9073 stand cover 1 J34G8B54AED 1B9073 base 941 1 J37G8B04 1 hinge 1 J40G 19T61561A ID LABEL e941Va EUR 2 J40G POP61...

Страница 61: ...2 0 1 CN511 033G3802 5B YH W WAFER 2nd source CN512 088G 352 21CL USB CONN TYPE A 1 E715 715G2663T01001001C USB PCB 71X26X1 6MM FR 1 S S 1OZ 1 10 2 Model e941SA T995NSNCWVA1UNJ Location Part number De...

Страница 62: ...250VAC Y5P 1 C900 065G306M3322BP 3300PF 20 1 C918 067G215A1024KV EC 1000uF 25V 12 5 20mm 2nd source C918 067G215A1024LV LOW ESR EC 1000uF 25V M 12 5 20mm 1 C925 067G215D4714KV E C 105 CAP 470UF M 25V...

Страница 63: ...1KOHM 1 1 10W YAGEO 1 R916 061G06031002FY RST CHIPR 10KOHM 1 1 10W YAGEO 1 R918 061G06031002FY RST CHIPR 10KOHM 1 1 10W YAGEO 1 R602 061G0603103 JT RST CHIP 10K 1 10W 5 TZAI YUAN 1 R603 061G0603103 JT...

Страница 64: ...13 065G060310432K Y CAP CHIP 0603 0 1UF K 50V X7R 1 C612 065G060310432K Y CAP CHIP 0603 0 1UF K 50V X7R 1 C914 065G060347132K T CAP CHIP 0603 470pF K 50V X7R 2nd source C914 065G060347132K Y CAP CHIP...

Страница 65: ...04 093G 6038T52T FR103 1 D903 093G110050152T DIODE PR1007 1A 1000V 500ns DO 41 2nd source J601 095G 90 23 JUMPER WIRE 1 J602 095G 90 23 JUMPER WIRE 1 J603 095G 90 23 JUMPER WIRE 1 J604 095G 90 23 JUMP...

Страница 66: ...HIP 10K 1 10W 5 TZAI YUAN 2nd source R806 061G0603103 JT RST CHIP 10K 1 10W 5 TZAI YUAN 2nd source R809 061G0603104 JT RST CHIP 100K 1 10W 5 TZAI YUAN 1 R833 061G0603109 JY RST CHIPR 1 OHM 5 1 10W YAG...

Страница 67: ...35315F H D SUB 15PIN 2nd source CN101 088G 35315F HD D SUB CONN F ATTACHED SCREW 2nd source CN101 088G 35315F HJ SOC SUBD H 15P F 2nd source CN101 088G 35315F XH D SUB 15PIN VERTICAL CONN WITH SCREW 1...

Страница 68: ...5 TZAI YUAN 2nd source R405 061G0402101 JT RST CHIP 100R 1 16W 5 TZAI YUAN 2nd source R117 061G0402101 JT RST CHIP 100R 1 16W 5 TZAI YUAN 2nd source R115 061G0402101 JT RST CHIP 100R 1 16W 5 TZAI YUAN...

Страница 69: ...16W FENGHUA 1 R414 061G0402223 JF RST CHIPR 22KOHM 5 1 16W FENGHUA 1 R410 061G0402223 JF RST CHIPR 22KOHM 5 1 16W FENGHUA 1 R711 061G0402223 JF RST CHIPR 22KOHM 5 1 16W FENGHUA 1 R435 061G0402223 JF R...

Страница 70: ...M 5 1 4W TZAI YUAN 2nd source R434 061G1206221 JT RST CHIPR 220 OHM 5 1 4W TZAI YUAN 2nd source C106 065G040210232K A CAP 0402 1NF K 50V X7R 1 C106 065G040210232K T CAP CHIP 0402 1000PF 50V X7R 2nd so...

Страница 71: ...33PF J 50V NPO 1 C103 065G040233031J T CAP CHIP 0402 33PF 50V NPO 2nd source C103 065G040233031J Y CAP CHIP 0402 33P 50V NPO 5 2nd source C411 065G040247031J A CAP CHIP 0402 47PF J 50V NPO 2nd source...

Страница 72: ...V301 B CHIP BEAD FCM2012VF 301T07 bullwill 2nd source FB406 071G 56V301 M CHIP BEAD 2012 300 OHM 1 FB403 071G 56V301 M CHIP BEAD 2012 300 OHM 1 FB101 071G 59K190 B 19 OHM BEAD 1 FB102 071G 59K190 B 19...

Страница 73: ...10YGC3 HB GUANGPU 1 E715 715G4007K01000004F KEY PCB FR 4 106 5X14 5MM T1 6MM 2nd source E715 715G4007K01000004L KEY PCB FR 4 106 5X14 5MM T1 6MM 1 Q12G6600 6 FOOT 4 Q40G000161515A CARTON LABEL 1 E0890...

Страница 74: ...L H40G 58361541A CARTON LABEL H40G 58361548A 941 USB LABEL H40G 58361549A Win7 EPEAT S EPA LABEL H40G 58361561A LED LABEL H41G7800615 7G WARRANTY BOOKLIST H41G780961528A 941 QSG H44G9909615 2A CARTON...

Страница 75: ...3 CN901 087G 501 32 S AC SOCKET ST 01CP BCE R CN902 095G 825 9W518 HARNESS 9P 9P 120MM 705GQ793081 D901 D906 ASS Y 705GQ857044 Q901 ASS Y ADA1603HD1SMT POWER BOARD FOR SMT LNPCA9401XHD1 CONVERTOR BOAR...

Страница 76: ...NGHUA R917 061G1206330 JF RST CHIPR 33 OHM 5 1 4W FENGHUA R913 061G1206519 JF RST CHIPR 5 1OHM 5 1 4W FENGHUA R931 061G12066804FT RST CHIPR 6 8MOHM 1 1 4W TZAI YUAN R932 061G12066804FT RST CHIPR 6 8MO...

Страница 77: ...2101 JY NO SUGGEST RST CHIPR 100 OHM 5 1 16W R102 061G0402101 JY NO SUGGEST RST CHIPR 100 OHM 5 1 16W R103 061G0402101 JY NO SUGGEST RST CHIPR 100 OHM 5 1 16W R104 061G0402101 JY NO SUGGEST RST CHIPR...

Страница 78: ...P CHIP 0402 100nF 16V X7R C431 065G040210412K T CAP CHIP 0402 100nF 16V X7R C433 065G040210412K T CAP CHIP 0402 100nF 16V X7R C441 065G040210412K T CAP CHIP 0402 100nF 16V X7R C701 065G040210412K T CA...

Страница 79: ...B CN001 033G8032 6F X WAFER 6P 1 25MM R003 061G0603000 JF RST CHIPR MAX 0R05 1 10W FENGHUA R005 061G0603100 1F RST CHIPR 1 KOHM 1 1 10W R004 061G0603200 1F RST CHIPR 2 KOHM 1 1 10W R002 061G0603200 1F...

Страница 80: ...061G0603103 JF RST CHIPR 10K OHM 5 1 10W FENGHUA R813 061G0603103 JF RST CHIPR 10K OHM 5 1 10W FENGHUA R809 061G0603104 JT RST CHIP 100K 1 10W 5 TZAI YUAN R833 061G0603109 JT RST CHIP 1R 1 10W 5 TZAI...

Страница 81: ...X7R C807 065G080522512K T CAP CHIP 0805 2 2uF K 16V X7R C806 065G080522522K T NO SUGGEST 0805 2 2uF K 25V X7R L801 073G253S 90 X SMD CHOKE 22uH 3A HF ZD801 093G 60S907 T SCHOTTKY B3100B 3A 100V SMB 7...

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