AOC I2352VH 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.......................................21
4.1.Input Signal Connector.........................................21
4.2.Factory Preset Display Modes...............................23
4.3.Panel Specification.............................................24
5.Block Diagram........................................................26
5.1.Main Board......................................................26
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.............................................27
6.Schematic.......................................................28
6.1.Main Board....................................................28
6.2.Power Board..................................................34
6.3.Key Board......................................................36
7.PCB Layout.....................................................37
7.1.Main Board....................................................37
7.2.Power Board..................................................38
7.3.Key Board....................................................41
8.Maintainability..................................................42
8.2.Trouble Shooting..........................................43
10.Monitor Exploded View.................................49
11.BOM List...................................................51
SAFETY NOTICE
AOC I2352VH
Horizontal Frequency
30-83 KHz
Page

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Summary of Contents for AOC I2352VH

  • Page 1: Table Of Contents

    23" LCD Color Monitor AOC I2352VH Service Service Service Horizontal Frequency 30-83 KHz Table of Contents Description Page Description Page 5.2.Power Board……………..……………...…..27 Table of Contents..……......……..1 6.Schematic……………........28 Revision List.…........…………..2 6.1.Main Board………...........28 Important Safety Notice.……......……..3 6.2.Power Board...…….........34 1.Monitor Specification......………..4 6.3.Key Board...……..........36 2.LCD Monitor Description……………………………..5 7.PCB Layout..…………........37...
  • Page 2: Revision List

    Revision List Version Release Date Revision History TPV Model Name HDBGNZ6FAYUHDN HDBGNT6BAYK2HN HDBGNT6BAYK2DN Nov.25.2011 Initial release HDBGNT6MAYSDDN HDBGNT6LAY3ADN HDBGNT6TAY1RDN...
  • 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 21: Input/Output Specification

    4. Input/Output Specification 4.1 Input Signal Connector...
  • Page 23: Factory Preset Display Modes

    4.2 Factory Preset Display Modes...
  • Page 24: Panel Specification

    4.3 Panel Specification 4.3.1 General Features LM230WF3 is a Color Active Matrix Liquid Crystal Display with a 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 black mode.
  • Page 25 4.3.4 Optical Characteristics (Ta=25 °C, V =5V, f =60Hz Dclk=144MHz, I =110mA)
  • Page 26: 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 27: 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 28: Schematic

    T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size 100N16V 715G4641-M01-000-0040-1-110810 TPV MODEL 絬 隔 瓜 絪 腹 Key Component 2. INPUT PCB NAME G4641-M01-AOC-0040-1-110810 <称爹> 称爹 Date Monday , August 22, 2011 Sheet...
  • Page 29 DDC_WP 5 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size 715G4641-M01-000-0040-2-110810 TPV MODEL 絬 隔 瓜 絪 腹 Key Component 3. HDMI PCB NAME G4641-M01-AOC-0040-1-110810 <称爹> 称爹 Date Monday , August 22, 2011 Sheet...
  • Page 30 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size 絬 隔 瓜 絪 腹 715G4641-M01-000-0040-2-110810 TPV MODEL AOC i2352Vh Key Component 4. SCALER PCB NAME G4641-M01-AOC-0040-1-110810 <称爹> 称爹 Monday , August 22, 2011 Sheet...
  • Page 31 T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size 715G4641-M01-000-0040-2-110810 TPV MODEL 絬 隔 瓜 絪 腹 Key Component 5. PANEL INTERFACE PCB NAME G4641-M01-AOC-0040-1-110810 <称爹> 称爹 Monday , August 22, 2011 Sheet Date...
  • Page 32 120 OHM T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size 715G4641-M01-000-0040-1-110810 TPV MODEL 絬 隔 瓜 絪 腹 Key Component 6. AUDIO PCB NAME G4641-M01-AOC-0040-1-110810 称爹 <称爹> Date Monday , August 22, 2011 Sheet...
  • Page 33 4K7 1/16W 5% T P V ( Top Victory Electronics Co . , Ltd. ) OEM MODEL Size 絬 隔 瓜 絪 腹 715G4641-M01-000-0040-1-110810 TPV MODEL Key Component 7. POWER PCB NAME G4641-M01-AOC-0040-1-110810 <称爹> 称爹 Monday , August 22, 2011 Sheet Date...
  • Page 34: 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 35 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 36: Key Board

    6.3 Key Board 715G4851K02000001S 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# C001 C002 R003 2K 1/8W 1% 0.1uF 50V 0.1uF 50V JR001 0 OHM +-5% 1/8W R004 Wire Harness 1KOHM +-1% 1/8W...
  • Page 37: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G4641M01000004K...
  • Page 38: Power Board

    7.2 Power Board Adapter Board: 715G4750P02000001S...
  • Page 40 Converter Board: 715G4711P01001004S...
  • Page 41: Key Board

    7.3 Key Board 715G4851K02000001S...
  • Page 42: 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 43: 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 44 2. No Video (Power LED Green) No Video (Power LED Green) 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 45 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 46 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 47: 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 48 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 ±30, y = 297 ±30 4.
  • Page 49: Monitor Exploded View

    10. Monitor Exploded View...
  • Page 50 Description BEZEL L23W-U52 LENS INSULATING SHEET INSULATING SHEET MAIN_FRAME HINGE 23 REAR COVER L23W-U52 STAND TOP STAND COVER BASE L23W-S1 Part No. Description FOOT 0D1G1030 8120 SCREW(FOR POWER BOARD/MAIN_FRAME) KEY BOARD 0D1G1030 8120 SCREW(FOR MAIN BOARD/MAIN_FRAME) POWER BOARD 0Q1G 940 10120 SCREW(FOR HINGE/REAR COVER) MAIN BOARD 0Q1G 140 14120...
  • Page 51: Bom List

    Q45G 77 4 PE FILM Q50G 4 10 TIE (Y1900221) Q52G 1185 98 TAPE Q52G 1185 99 BIG CARTON TAPE FOR AOC E750 750GBG230F3B13N000 LCD LM230WF3-SLB1 GZ LGD 756GQBCB A1012 00 MAIN BOARD-CBPCBNTA1QN SMTCB-U402 100GANGD00AYT1 MCU ASS'Y-056G2233 11 801GQBEE399 L23W-U52-S1 E2352VHZ ASS'Y...
  • Page 52 I2352VH CD MANUAL 040G 58162435A PN LABEL FOR MANUAL PE BAG 040G 581689 4A BARCODE LABEL FOR 1 Q40G000161521A CARTON LABEL FOR KOREA Q40G023N61525A RATING LABEL FOR I2352VH KOREA CN604 033G3802 4B Y WAFER 2.0MM 4P CN406 033G3802 7B Y WAFER CN701 033G3802 9B Y CONNECTOR 9P 2.0...
  • Page 53 C619 067G315M2213HV EC 220UF 20% 16V 6.3*7 C601 067G315M2213HV EC 220UF 20% 16V 6.3*7 CN101 088G 35315FVCL HF HF D-SUB CONN V/T 15P BLUE H=10.4 CN102 088G 35424F VC HF DVI CONN V/T 24P H=10.4 WITH SCREW HF CN603 088G302G5B2VCL PHONE JACK V/T 5P BLACK H=10.3 CN603 088G302G5B2VYG...
  • Page 54 R622 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R443 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R442 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R435 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R425 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R414 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN...
  • Page 55 R631 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R607 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R605 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R604 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN R603 061G0402103 JT RST CHIP 10K 1/16W 5% TZAI YUAN...
  • Page 56 R159 061G0402470 JT RST CHIP 47R 1/16W 5% TZAI YUAN R158 061G0402470 JT RST CHIP 47R 1/16W 5% TZAI YUAN R128 061G0402470 JT RST CHIP 47R 1/16W 5% TZAI YUAN R127 061G0402470 JT RST CHIP 47R 1/16W 5% TZAI YUAN R126 061G0402470 JT RST CHIP 47R 1/16W 5% TZAI YUAN...
  • Page 57 C429 065G040210412K CAP CHIP 0402 100NF 16V X7R C436 065G040210412K CAP CHIP 0402 100NF 16V X7R C472 065G040210412K CAP CHIP 0402 100NF 16V X7R C474 065G040210412K CAP CHIP 0402 100NF 16V X7R C602 065G040210412K CAP CHIP 0402 100NF 16V X7R C604 065G040210412K CAP CHIP 0402 100NF 16V X7R...
  • Page 58 C111 065G040222031J CAP CHIP 0402 22P 50V NPO +/-5% C112 065G040222031J CAP CHIP 0402 22P 50V NPO +/-5% C615 065G040222131J CAP CHIP 0402 220PF 50V NPO C616 065G040222131J CAP CHIP 0402 220PF 50V NPO C617 065G040222131J CAP CHIP 0402 220PF 50V NPO C618 065G040222131J CAP CHIP 0402 220PF 50V NPO...
  • Page 59 C403 065G080510615K CAP CHIP 0805 10UF K 16V X5R C402 065G080510615K CAP CHIP 0805 10UF K 16V X5R C603 065G120622615K CAP CHIP 1206 22UF K 16V X5R U402 070GHDCP500HDC HDCP CODE FB607 071G 56K121 HF CHIP BEAD 0805 120R 25% FB608 071G 56K121 HF CHIP BEAD 0805 120R 25%...
  • Page 60 TIN CREAM W/O PB E715 715G4641M01000004K MAIN PCB FR4 DS 122*72*1.6MM E715 715G4641M01000004L MAIN PCB FR4 DS 122*72*1.6MM 2nd Source KEPCBQN5 KEY BOARD G4851-K02-AOC-X-2-110927 LED Φ3MM GP32032M/G307-ZY LED001 081G 12 1F GP YELLOW/GREEN CN001 095G820H 6D525 HARNESS 6P(SANW)-7P(A2008) 320MM SW001...
  • Page 61 NR901 061G 58100MEW NTCR 10R 20% 4W C905 063G107K224 UM X2 CAP 0.22UF K 275VAC C905 063G107K2246S1 X2 CAP 0.22UF K 275VAC C921 065G306M1023BW CAP Y1 1NF 20% 250V Y5U C920 065G306M1023BW CAP Y1 1NF 20% 250V Y5U C900 065G306M3322BP CAP Y1 3.3NF 20% 250V Y5U C907 067G215S3316KV...
  • Page 62 705GQB93072 D903 ASS'Y D903 093G 60330 SCHOTTKY MBRF20100CT 20A 100V ITO-220AB 0M1G 930 8120 SCREW 3X8 Q90G0195 3 HEAT SINK 709G4750 QM001 COMSUPTIVE ASS'Y 055G 23524 WELDING FLUX WITHOUT PB Q55G 100625 TIN STICK_LOW ARGENTUM IC901 056G 379190 AC/DC CONVERTER LD7750RGR SOP-7 R915 061G08051000FF RST CHIPR 100 OHM +-1% 1/8W FENGHUA...
  • Page 63 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 061G1206470 JT RST CHIPR 47 OHM +-5% 1/4W TZAI YUAN R901 061G1206470 JT RST CHIPR 47 OHM +-5% 1/4W TZAI YUAN...
  • Page 64 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 R903 061G152M10452T SY RST MOFR 100KOHM +-5% 2WS FUTABA...
  • Page 65 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 709G4750 QA001 COMSUPTIVE ASS'Y 052G 1191 GLASS CLOTH...
  • Page 66 R830 061G06031008FI RST 0603 1R 1% 1/10W TA-I R828 061G06031008FI RST 0603 1R 1% 1/10W TA-I R826 061G06031008FI RST 0603 1R 1% 1/10W TA-I R812 061G0603101 JF RST CHIPR 100 OHM +-5% 1/10W FENGHUA R812 061G0603101 JI RST 0603 100R 5% 1/10W TA-I R810 061G0603102 JF RST CHIPR 1K OHM +-5% 1/10W FENGHUA...
  • Page 67 C812 065G080510131J CAP CHIP 0805 100PF J 50V NPO C801 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% C801 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% C807 065G080522512K CAP CHIP 0805 2U2 16V X7R +/-10% C807 065G080522512K CAP 0805 2.2UF 10% 16V X7R C803 065G080539131J CAP CHIP 0805 390PF J 50V NPO...

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