AOC E2352PHZ Service Manual

AOC E2352PHZ Service Manual

23" lcd color monitor
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23" LCD Color Monitor
Service
Service
Service
Description
Table of Contents.........................................................1
Revision List................................................................2
Important Safety Notice...............................................3
1.Monitor Specification.................................................4
2.LCD Monitor Description.......................................5
3.Operation Instruction...............................................6
3.1.General Instructions.................................................6
3.2.Control Button......................................................6
3.3.OSD Menu............................................................7
4.Input/Output Specification.......................................22
4.1.Input Signal Connector.........................................22
4.2.Factory Preset Display Modes...............................24
4.3.Panel Specification.............................................25
5.Block Diagram........................................................27
5.1.Main Board......................................................27
ANY PERSON ATTEMPTING TO SERVICE THIS CHASSIS MUST FAMILIARIZE HIMSELF WITH THE CHASSIS
AND BE AWARE OF THE NECESSARY SAFETY PRECAUTIONS TO BE USED WHEN SERVICING
ELECTRONIC EQUIPMENT CONTAINING HIGH VOLTAGES.
CAUTION: USE A SEPARATE ISOLATION TRANSFOMER FOR THIS UNIT WHEN SERVICING

Table of Contents

Page
Description
5.2.Power Board.............................................28
6.Schematic.......................................................29
6.1.Main Board....................................................29
6.2.Power Board..................................................35
6.3.Key Board......................................................37
7.PCB Layout.....................................................38
7.1.Main Board....................................................38
7.2.Power Board..................................................40
7.3.Key Board....................................................43
8.Maintainability..................................................44
8.2.Trouble Shooting..........................................45
10.Monitor Exploded View.................................51
11.BOM List...................................................53
SAFETY NOTICE
AOC E2352PHZ
Horizontal Frequency
30-83 KHz
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Summary of Contents for AOC E2352PHZ

  • Page 1: Table Of Contents

    23" LCD Color Monitor AOC E2352PHZ Service Service Service Horizontal Frequency 30-83 KHz Table of Contents Description Page Description Page 5.2.Power Board……………..……………...…..28 Table of Contents..……......……..1 6.Schematic……………........29 Revision List.…........…………..2 6.1.Main Board………...........29 Important Safety Notice.……......……..3 6.2.Power Board...…….........35 1.Monitor Specification......………..4 6.3.Key Board...……..........37 2.LCD Monitor Description……………………………..5 7.PCB Layout..…………........38...
  • Page 2: Revision List

    Revision List Version Release Date Revision History TPV Model Name HDBGT22MAYSCDN HDBGT22LAY3ADN Jul.5.2011 Initial release HDBGT22FAYUHDN HDBGT22BAYK2DN HDBGT22TAY1RDN Nov.08.2011 Add new model HDBGT22AAYUNDN HDBGT22EAYACDN HDBGT22EAY6ADN Nov.21.2011 Add new models HDBGT22QAYA6DN HDBGT22KAYE6DN...
  • Page 3: Important Safety Notice

    Important Safety Notice Proper service and repair is important to the safe, reliable operation of all AOC Company Equipment. The service procedures recommended by AOC and described in this service manual are effective methods of performing service operations. Some of these service operations require the use of tools specially designed for the purpose. The special tools should be used when and as recommended.
  • Page 4: Monitor Specification

    1. Monitor Specifications...
  • Page 5: Lcd Monitor Description

    2. LCD Monitor Description The LCD monitor will contain a main board, an adapter board, a converter board and a key board which house the flat panel control logic, brightness control logic and DDC. The power part will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage.
  • Page 6: Operation Instruction

    3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control knobs are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. 3.2 Control Buttons Power Press the Power button to turn on/off the monitor.
  • Page 7: Osd Menu

    3.3 OSD Menu 1) Press the MENU-button to activate the OSD window. 2) Press - or + to navigate through the functions. Once the desired function is highlighted, press the MENU-button to activate it. Press - or + to navigate through the sub-menu functions. Once the desired function is highlighted, press MENU-button to activate it.
  • Page 22: Input/Output Specification

    4. Input/Output Specification 4.1 Input Signal Connector...
  • Page 24: Factory Preset Display Modes

    4.2 Factory Preset Display Modes Preset table for the HDMI 3D mode For HDMI INPUT, switch over to 1920*1080/24/25/30HZ if the font on the display unit screen is not clear.
  • Page 25: Panel Specification

    4.3 Panel Specification 4.3.1 General Features LM230WF8-TLA1 is a Color Active Matrix Liquid Crystal Display Light Emitting Diode (White LED) backlight system without LED driver. The matrix employs a-Si Thin Film Transistor as the active element. It is a transmissive type display operating in the normally white mode.
  • Page 26 4.3.4 Optical Characteristics Ta= 25°C, V =5.0V, f =60Hz f =119MHz, I = 110mA...
  • Page 27: Block Diagram

    5. Block Diagram 5.1 Main Board 04.SCALER 05.PANEL INTERFACE 02.INPUT VLCD GNDR GNDR VLCD GNDG GNDG GNDB GNDB DVI5V HSY NC HSY NC VSY NC VSY NC DDCA_SDA DDCA_SDA DDCA_SCL DDCA_SCL DVI5V RX0+ RX0+ RX0- RX0- RX1+ RX1+ RX1- RX1- RX2+ RX2+ +5V_SB...
  • Page 28: Power Board

    5.2 Power Board Adapter Board: AC input Bridge Rectifier Transformer EMI filter Rectifier diodes and Filter Start Resistor (R905,R908,R909) Feedback Power Switch PWM Control Circuit (Q901) (IC901) Photo coupler (IC902) Converter Board: L801 ZD801 Q801 (CN804) PWM Control OZ9998AGN (IC801)
  • Page 29: Schematic

    6. Schematic 6.1 Main Board 715G5017M01000004L RED+ R150 80ohm R102 10R 1/16W 5% C102 47nF 16V RED- GREEN+ R151 80ohm R103 10R 1/16W 5% C103 47nF 16V GREEN- BLUE+ R152 80ohm R104 10R 1/16W 5% C104 47nF 16V BLUE- R105 1K 1/16W 5% C130 22NF25V VGA5V...
  • Page 30 CN501 HDMI HDMI1/D2+ HDMI1_D2+ 5 D2 Shield HDMI1/D2- HDMI1_D2- 5 HDMI1/D1+ HDMI1_D1+ 5 D1 Shield HDMI1/D1- HDMI1_D1- 5 HDMI1/D0+ HDMI1_D0+ 5 D0 Shield HDMI1/D0- HDMI1_D0- 5 HDMI1/CK+ HDMI1_CK+ 5 DET_HDMI CK Shield HDMI1/CK- HDMI1_CK- 5 HDMI1_CEC 5 CE Remote HDMI_SCL R170 R171 DDC CLK...
  • Page 31 VCC3.3 R439 V12S V12C LT-SCL NC/100R 1/16W 5% R458 LT-SDA U403 NC/100R 1/16W 5% C401 FB406 120OHM V12S PB[0..9] PA[0..9] SCL1 PB6* R401 NC/100R 1/16W 5% V12ADC PB7* SDA1 R402 NC/100R 1/16W 5% P34* EE_WP R403 NC/100R 1/16W 5% +5V_SB NC/M24C16 FB407 120OHM...
  • Page 32 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P CN410 LVA3P LVB3M CONN LVA3M LVBCKP LVB0M RXO0- LVACKP LVBCKM LVB0P RXO0+ LVACKM LVB2P LVB1M RXO1- LVA2P LVB2M LVB1P RXO1+ LVA2M LVB1P LVB2M RXO2- LVA1P LVB1M LVB2P RXO2+ LVA1M LVB0P LVA0P LVB0M LVBCKM RXOC- LVA0M LVBCKP RXOC+ LVB3M...
  • Page 33 +5V_AUDIO +5V_SB FB601 +5V_AUDIO APA2606NI PAM8007HNR 3,4,5,8 +5V_SB 120OHM C630 0.47U D601 C601 LL4148 220UF 16V C602 C631 0.47U 0.1UF 16V +5V_AUDIO R602 R622 0OHM R601 1K 1/16W 5% 470R 1/16W 5% R606 10K 1/16W 5% Mute +5V_AUDIO R627 0OHM R607 C603 NC/10K 1/16W 5%...
  • Page 34 +5V_SB VCC3.3 +5V_SB VCC3.3 U701 +5V_SB 3,4,5,7 VCC3.3 INPUT OUTPUT C702 R701 ADJ/GND C701 4K7 1/16W 5% 220UF 16V 0.1UF 16V C705 AZ1117H-3.3TRG1 C703 C704 CN701 R702 100R 1/16W 5% 0.1UF 16V 100uF16V 0.1UF 16V Adj_BACKLIGHT 5 +5V_SB U702 VCC3.3 NC/AP2114D-3.3TRG1 R704 10K 1/16W 5%...
  • Page 35: Power Board

    6.2 Power Board Adapter Board: 715G4750P02000001S 47 OHM 1/4W R9 01 C901 C924 BD901 D2SB80 R9 02 4 7 OHM 1 /4 W 2N2 500V 2N2 500V FB901 R9 37 NC Coil T901 L902 POWER X'FMR BEAD +16V R928 R905 D901 ZD902 16V/1.5A...
  • Page 36 Converter Board: 715G4711P01001004S Vout R820 R833 1R 1% 0R01 1/10W R832 NC R831 NC R830 1R 1% CN805 R821 R844 C811 R819 CN801 0R01 1/10W R829 NC +16V 0R01 1/10W R828 1R 1% F801 0R05 1/4W L801 ZD801 C810 R827 NC 47UH 4.7UF 100V R818...
  • Page 37: Key Board

    6.3 Key Board 715G4851K01000001S ZD002 LED001 NC/MLVS0603M04 ZD003 SGND NC/MLVS0603M04 CN001 LBADC1 R001 2K 1/8W 1% LBADC2 DC_POWERON R002 0 OHM +-5% 1/8W LED_1# LED_2# R003 2K 1/8W 1% JR001 0 OHM +-5% 1/8W R004 CONN 1KOHM +-1% 1/8W SGND SW003 SW005 SW004...
  • Page 38: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G5017M01000004L...
  • Page 40: Power Board

    7.2 Power Board Adapter Board: 715G4750P02000001S...
  • Page 41 Converter Board: 715G4711P01001004S...
  • Page 43: Key Board

    7.3 Key Board 715G4851K01000001S...
  • Page 44: Maintainability

    8. Maintainability 8.1 Equipments and Tools Requirement Voltmeter. Oscilloscope. Pattern Generator. DDC Tool with an IBM Compatible Computer. Alignment Tool. LCD Color Analyzer. Service Manual. User Manual.
  • Page 45: Trouble Shooting

    8.2 Trouble Shooting No Power No power Check power cable is Re-plug the power cable tightened? Check Power “On/Off” Turn on the Power “On/Off” switch is “On”? Check the LED Check the AC power indicate is OK? Replace the power board and check connections Replace main board and check connections Replace key board and check connections...
  • Page 46 2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power Replace the main board button is OK? Replace the power The end board and connection Replace the main The end board and connection Check the LVDS/FFC Replace the LVDS/FFC cable or panel cable or panel...
  • Page 47 3. DIM DIM (image overlap, focus or flicker) Reset in factory mode The end Set to the optimal The end frequency, select the recommended frequency Readjust the phase and pixel The end clock in the user mode Pull out signal cable and Check the signal cable check “Self Test Feature and the PC...
  • Page 48 4. Color is not optimal Color is not optimal Color shift Miss color Reset the factory mode Replace the signal cable In the user mode, set the” color settings” until customer satisfy The end Pull out the signal cable and check the screen color display is normal? Replace the signal cable or PC Replace the main board...
  • Page 49: White-Balance, Luminance Adjustment

    9. White- Balance, Luminance Adjustment Approximately 30 minutes should be allowed for warm up before proceeding white balance adjustment. How to setting MEM channel you can reference to chroma 7120 user guide or simpl use “SC” key and “NEXT” Key to modify xyY value and use “ID”...
  • Page 50 C. Adjust Cool (9300K) color-temperature 1. Switch the Chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM. Channel to Channel 9 (with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 283 ±20, y = 297 ±20, Y>150 4.
  • Page 51: Monitor Exploded View

    10. Monitor Exploded View...
  • Page 52 Description BEZEL L23W-U52 LENS INSULATING SHEET INSULATING SHEET MAIN_FRAME HINGE 23 Part No. Description REAR COVER L23W-U52 0D1G1030 8120 SCREW(FOR POWER BOARD/MAIN_FRAME) STAND TOP 0D1G1030 8120 SCREW(FOR MAIN BOARD/MAIN_FRAME) STAND COVER 0Q1G 940 10120 SCREW(FOR HINGE/REAR COVER) BASE L23W-S1 0Q1G 140 14120 SCREW(FOR HINGE/STAND TOP) FOOT 0M1G 930 8 47 CR3...
  • Page 53: Bom List

    708GD106 CP AOC 40(1900) Q45G 77 4 PE FILM Q50G 4 10 TIE (Y1900221) Q52G 1185 99 BIG CARTON TAPE FOR AOC 750GBG230F8A11N000 LCD LM230WF8-TLA1 KR LGD 756GQBCB AA012 00 MAIN BOARD-CBPCBT2A1Q1 SMTCB-U402 100GARGD002YT1 MCU ASS'Y-056G2233501 801GQBEE086 L23W-U52-S1 E2352VHZ ASS'Y...
  • Page 54 A34G2606AED 1B0200 STAND TOP A34G2607AED 1B0100 STAND COVER J33G8B77 2 1C0100 LENS J33G8B78AED 1L0100 Q40G000362437A SRS+WIN7+SILVER EPEAT+EPA 65X12MM Q40G000461534A POP LABEL FOR E2352PHZ Q41G78S161565A E2352PHZ QSG Q44GD106615 2A 23 LCD CARTON Q45G 88609198 3002BAG ECN410 S95G179T30PW03 FFC CABLE P1.0 30P 250MM 089F80002503PG 1.0*30*2.5/12-250-3-0.65*0.05...
  • Page 55 CN603 088G302G5B2VCL PHONE JACK V/T 5P BLACK H=10.3 CN603 088G302G5B2VYG PHONE JACK V/T 5P BLACK H=10.3 2nd Source CN601 088G302G5G1VCL PHONE JACK V/T 5P GREEN H=10.3 CN601 088G302G5G1VYG PHONE JACK V/T 5P GREEN H=10.3 2nd Source X401 093G 2264B NXS27.000AC30F-KAB10 HC-49/US C703 067G 3051013PB EC 105C 100UF M 16V 5*11MM...
  • Page 56 R441 061G0402000 JI RST 0402 0.05R MAX 1/16W R447 061G0402000 JI RST 0402 0.05R MAX 1/16W R622 061G0402000 JI RST 0402 0.05R MAX 1/16W R430 061G0402000 JI RST 0402 0.05R MAX 1/16W R145 061G0402000 JI RST 0402 0.05R MAX 1/16W R622 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN...
  • Page 57 R410 061G0402101 JI BEST ONLY RST 0402 100R 5% 1/16W TA-I R459 061G0402101 JI BEST ONLY RST 0402 100R 5% 1/16W TA-I R630 061G0402101 JI BEST ONLY RST 0402 100R 5% 1/16W TA-I R702 061G0402101 JI BEST ONLY RST 0402 100R 5% 1/16W TA-I R119 061G0402101 JI BEST ONLY RST 0402 100R 5% 1/16W TA-I...
  • Page 58 R105 061G0402102 JT RST CHIP 1K 1/16W 5% TZAI YUAN R632 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R704 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R705 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I R717 061G0402103 JI TEST ONLY RST 0402 10K 5% 1/16W TA-I...
  • Page 59 R412 061G0402153 JT RST CHIP 15K 1/16W 5% TZAI YUAN R421 061G0402220 JI RST 0402 22R 5% 1/16W TA-I R424 061G0402220 JI RST 0402 22R 5% 1/16W TA-I R425 061G0402220 JI RST 0402 22R 5% 1/16W TA-I R426 061G0402220 JI RST 0402 22R 5% 1/16W TA-I R427 061G0402220 JI...
  • Page 60 R643 061G04023002FT RST 0402 30K 1% 1/16W R642 061G04023302FT RST CHIP R 33KOHM 1/16W +/-1% R612 061G0402333 JI RST 0402 33K 5% 1/16W R611 061G0402333 JI RST 0402 33K 5% 1/16W R611 061G0402333 JT RST CHIP 33K 1/16W 5% TZAI YUAN R612 061G0402333 JT RST CHIP 33K 1/16W 5% TZAI YUAN...
  • Page 61 R122 061G0402472 JI TEST ONLY RST CHIP 4.7K 5% 1/16W TA-I R156 061G0402472 JT RST CHIP 4K7 1/16W 5% TZAI YUAN R422 061G0402472 JT RST CHIP 4K7 1/16W 5% TZAI YUAN R701 061G0402472 JT RST CHIP 4K7 1/16W 5% TZAI YUAN R719 061G0402472 JT RST CHIP 4K7 1/16W 5% TZAI YUAN...
  • Page 62 C416 065G040210412K CAP 0402 0.1UF 10% 16V X7R C417 065G040210412K CAP 0402 0.1UF 10% 16V X7R C418 065G040210412K CAP 0402 0.1UF 10% 16V X7R C421 065G040210412K CAP 0402 0.1UF 10% 16V X7R C422 065G040210412K CAP 0402 0.1UF 10% 16V X7R C423 065G040210412K CAP 0402 0.1UF 10% 16V X7R...
  • Page 63 C421 065G040210412K CAP CHIP 0402 100NF 16V X7R C418 065G040210412K CAP CHIP 0402 100NF 16V X7R C417 065G040210412K CAP CHIP 0402 100NF 16V X7R C416 065G040210412K CAP CHIP 0402 100NF 16V X7R C602 065G040210412K CAP CHIP 0402 100NF 16V X7R C604 065G040210412K CAP CHIP 0402 100NF 16V X7R...
  • Page 64 C112 065G040222031J CAP CHIP 0402 22PF J 50V NPO C111 065G040222031J CAP CHIP 0402 22PF J 50V NPO C112 065G040222031J CAP CHIP 0402 22P 50V NP0 +/-5% C111 065G040222031J CAP CHIP 0402 22P 50V NP0 +/-5% C618 065G040222131J CAP 0402 220PF J 50V NPO C617 065G040222131J CAP 0402 220PF J 50V NPO...
  • Page 65 C132 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C133 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C132 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C131 065G040250931C CAP 0402 5PF 0.25PF 50V NP0 C632 065G060310512K CAP 0603 1UF 10% 16V X7R C605 065G060310512K CAP 0603 1UF 10% 16V X7R...
  • Page 66 FB401 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF FB406 071G 56K121 TA CHIP BEAD 120R/6000MA HCB2012KF-121T60 FB407 071G 56K121 TA CHIP BEAD 120R/6000MA HCB2012KF-121T60 FB411 071G 56K121 TA CHIP BEAD 120R/6000MA HCB2012KF-121T60 FB601 071G 56K121 TA CHIP BEAD 120R/6000MA HCB2012KF-121T60 FB602 071G 56K121 TA CHIP BEAD 120R/6000MA HCB2012KF-121T60...
  • Page 67 715G5017M01000004L MAIN PCB FR4 DS 122X72X1.6MM C428 067G 3052213PB CAP 105¡ÃC 220UF C603 067G305S1013HB EC 100UF 16V 6.3*7MM KEPCBQN1 KEY BOARD G4851-K0E-AOC-X-1-110322 LED001 081G 12 10 EL RED/BLUE 209-3SURUBW/C470/A3/T2/F182-150 CN001 095G820H 6D525 HARNESS 6P(SANW)-7P(A2008) 320MM SW001 077G603S AI HJ TACT SWITCH AI 2PIN SEALED...
  • Page 68 GND2 009G6005 1 GROUND TERMINAL IC902 056G 139 9 IC EL817M(X) PHOTOCOUPLER DIP-4 IC902 056G 139 3A PC123Y22FZOF SHARP NR901 061G 58100 X NTCR 10R 20% 5W(10D2-14 MCS) NR901 061G 58100MEW NTCR 10R 20% 4W C905 063G107K224 UM X2 CAP 0.22UF K 275VAC C905 063G107K2246S1 X2 CAP 0.22UF K 275VAC...
  • Page 69 D901 093G 60943 DIODE SFF1004G ITO-220AB D901 093G 60978 RECTIFIER UF1002FCT 10A 200V ITO-220AB 0M1G 930 8 47 CR3 SCREW 3X8 Q90G0195 1 HEAT SINK 705GQB93015 D903 ASS`Y D903 093G 60930 SCHOTTKY MBRF2060CT 20A 60V ITO-220AB 0M1G 930 8120 SCREW 3X8 Q90G0195 1 HEAT SINK IC901...
  • Page 70 R914 061G1206470 JF RST CHIPR 47 OHM +-5% 1/4W FENGHUA R901 061G1206470 JI RST 47 OHM 5% 1/4W TA-I R902 061G1206470 JI RST 47 OHM 5% 1/4W TA-I R914 061G1206470 JT RST CHIPR 47 OHM +-5% 1/4W TZAI YUAN R913 061G1206470 JT RST CHIPR 47 OHM +-5% 1/4W TZAI YUAN R902...
  • Page 71 CN901 006G 31500 EYELET IC903 056G 158 10 T LDO IC AZ431AZ-AE1 TO-92 150MA 40V TO-92 IC903 056G 563354 SHUNT. REG. TL431-A-TA TO-92 Q903 057G 419 18 T SMALLTRAN 2SD1207-T-AE 2A 60V MP Q903 057G 761 16 TRA KTD1028 KEC R903 061G152M10452T HX RST MOF 100K 5% 2WS...
  • Page 72 J907 095G 90 23 JUMPER WIRE J906 095G 90 23 JUMPER WIRE J905 095G 90 23 JUMPER WIRE J904 095G 90 23 JUMPER WIRE J903 095G 90 23 JUMPER WIRE J902 095G 90 23 JUMPER WIRE J901 095G 90 23 JUMPER WIRE 715G4750P02000001S PWR PCB FR1 CTI>600 SS 114*226*1.6MM...
  • Page 73 R812 061G0603101 JI RST 0603 100R 5% 1/10W TA-I R810 061G0603102 JF RST CHIPR 1K OHM +-5% 1/10W FENGHUA R810 061G0603102 JT RST CHIP 1K 1/10W 5% TZAI YUAN R806 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R813 061G0603103 JF RST CHIPR 10K OHM +-5% 1/10W FENGHUA R813...
  • Page 74 C807 065G080522512K CAP 0805 2.2UF 10% 16V X7R C803 065G080539131J CAP CHIP 0805 390PF J 50V NPO C804 065G080539131J CAP CHIP 0805 390PF J 50V NPO C804 065G080539131J CAP CHIP 0805 390P 50V NPO +/-5% C803 065G080539131J CAP CHIP 0805 390P 50V NPO +/-5% C806 065G080547432K CAP 0805 470NF 10% 50V X7R...

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