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18.5" LCD Monitor
Service
Service
Service
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 Buttons and Connections...............................6
3.3.OSD Setting.............................................................8
4.Input/Output Specification........................................23
4.1.Input Signal Connector..........................................23
4.2.Preset Display Modes................................23
4.3.Panel Specification...........................................24
5.Block Diagram............................................................27
5.1.Main Board.....................................................27
5.2.Power Board..................................................28
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
6.Schematic..........................................................29
6.1.Main Board.......................................................29
6.2.Power Board....................................................34
7.PCB Layout.........................................................37
7.1.Main Board......................................................37
7.2.Power Board.....................................................38
7.3.Key Board........................................................41
7.4.USB Board.......................................................41
8.Maintainability....................................................42
8.1.Equipments and Tools Requirement..................42
8.2.Trouble Shooting.............................................43
9.White-Balance,Luminance Adjustment...............65
10.Monitor Exploded View......................................67
11.BOM List......................................................68
SAFETY NOTICE
1
AOC e941Pwa
Horizontal Frequency
30 - 60kHz
Page
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Summary of Contents for AOC e941Pwa
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Page 1: Table Of Contents
18.5" LCD Monitor AOC e941Pwa Service Service Service Horizontal Frequency 30 - 60kHz Table of Contents Description Page Description Page Table of Contents…………………..…………………..…...1 6.Schematic…………..….........29 Revision List.…...........……..2 6.1.Main Board..…….…...........29 Important Safety Notice.….…......……..3 6.2.Power Board..……….........34 1.Monitor Specification......………....4 7.PCB Layout..………..........37 2.LCD Monitor Description……….……………………..5 7.1.Main Board………..…........37... -
Page 2: Revision List
Revision List Version Release Date Revision History TPV Model Name T8BANT6BWVA1DNE Initial release Nov.-22-2011... -
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, two USB boards 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 (See Figure ). By changing these settings, the picture can be adjusted to your personal preferences. * The power cord should be connected. - Page 7 1. Power 2. DVI 3. D-SUB 4. USB 5. Audio To protect equipment, always turn off the PC and LCD monitor before connecting. 1 Connect the power cable to the AC port on the back of the monitor. 2 Connect one end of the DVI cable to the back of the monitor and connect the other end to the computer’s DVI port. 3 Connect one end of the 15-pin D-Sub cable to the back of the monitor and connect the other end to the computer's D-Sub port.
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Page 8: Osd Setting
3.3 OSD Setting Basic and simple instruction on the control keys. 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 9 Luminance...
- Page 11 Image Setup...
- Page 12 Color Temperature...
- Page 14 Color Boost...
- Page 15 Picture Boost...
- Page 16 OSD Setup...
- Page 17 Extra...
- Page 19 Reset...
- Page 20 Exit...
- Page 21 LED Indicators Status LED Color Full Power Green or Blue Mode Active-off Orange or red Mode...
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Page 22: Input/Output Specification
4. Input/Output Specification 4.1 Input Signal Connector Analog connector... -
Page 23: Preset Display Modes
4.2 Preset Display Modes... -
Page 24: Panel Specification
4.3 Panel Specification 4.3.1 General Features This specification applies to the 18.5 inch-wide Color a-Si TFT-LCD Module M185XW01.The display supports the WXGA - 1366(H) x 768(V) screen format and 16.7M colors (RGB 6-bits + Hi-FRC data). All input signals are 1-channel LVDS interface and this module doesn’t contain an inverter board for backlight. - Page 25 Signal Electrical Characteristics Note 1: LVDS Signal Waveform...
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Page 26: Optical Characteristics
Backlight Unit Ta = 25℃ Note 1 :The specified current is input LED chip 100% duty current. Note 2 : The value showed in the table is one light bar’s operation voltage. Note 3 : Definition of life time : brightness becomes 50% of its original value. The minimum life time of LED unit is on the condition of IRLED = 60mA and 25±2℃... -
Page 27: Block Diagram
5. Block Diagram 5.1 Main Board 04.SCALER 02.INPUT VCC3.3 VCC3.3 SOG_DET VCC1.8 SOG_DET SOG_DET VCC1.8 05.PANEL INTERFACE EDID_WP AHS0 EDID_WP AHS0 AHS0 AVS0 AVS0 AVS0 PA[0..9] DDCSDA1 DDCSDA1 DDCSDA1 PA[0..9] PA[0..9] DDCSCL1 PLACEMENT DDCSCL1 DDCSCL1 VGA_CABLE_DET VGA_CABLE_DET VGA_CABLE_DET CN701 CN408 PB[0..9] CN409 02.D-SUB INPUT... -
Page 28: Power Board
5.2 Power Board AC input Transformer Rectifier Bridge EMI filter (T901) diodes Rectifier and Filter Start Resistor (R908) Feedback PWM Control Circuit Power Switch FAN6752MY (Q901) (IC901) Photo coupler Regulator (IC902) (IC903) L801 D801 14.5V MOSFET (Q801) (CN806) PWM Control ON/OFF MP3389EF (U801) -
Page 29: Schematic
6. Schematic 6.1 Main Board 715G3737M02000004S CN101 DET_VGA VGA_CABLE_DET R102 100R 1/16W 5% VGA_CABLE_DET 5 DB15 VGA_5V DDCSCL1 DDCSCL_A R101 DDCSCL1 VGA_5V 100R 1/16W 5% VSIN0 BIN0- HSIN0 BIN0 R103 R104 R105 C102 GIN0- BIN0 ZD101 0R05 1/16W 0R05 1/16W 100R 1/16W 5% 47N16V B0+ 5... - Page 30 R127 DVI_CABLE_DET 5 100R 1/16W 5% DVI5V CN102 3,5,7 VSY NC DET_DVI DVI5V SY NC GND SCL_DVI R128 100R 1/16W 5% D102 DDC SCL SDA_DVI R129 100R 1/16W 5% ESD_DVI BAV70 DDC SDA DVI5V R130 10K 1/16W 5% Q101 U104 ESD_DVI ESD_DVI 1/3shield...
- Page 31 VCC1.8 FB401 CVDD 300OHM CN401 PB[0..9] PB[0..9] LVB3P R402 NC/2K2 1/16W 5% LVB3M R403 NC/2K2 1/16W 5% LVBCKP C401 C402 C403 LVBCKM VCC3.3 LVB2P 100NF 25V 100NF 25V 100NF 25V LVB2M LVB1P LVB1M FB402 LVB0P NC/CONN 300OHM ADC_VAA LVB0M R401 R404 R405 3K9 +/-5% 1/16W...
- Page 32 PA[0..9] PB[0..9] PA[0..9] PB[0..9] LVB3P CN408 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 VCC3.3 U701 AP2114H-3.3TRG1 FB701 0 OHM +-5% 1/8W 3,4,5 VCC3.3 5 VCC3.3 C703 C704 100NF 25V C702 100NF 25V C701 R702 100uF16V 4K7 1/16W 5% 100NF 25V +5V 3,4,5 CN701 R703 100R 1/16W 5% Adj_BACKLIGHT 5 C706 VCC3.3 U702 100NF 25V C705 NC/G1084-33T43Uf 100uF16V...
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Page 34: Power Board
6.2 Power Board Adapter 715G2892P01020001C R929 100 OHM 1/4W BD901 C916 L905 KBP208G R930 100 OHM 1/4W 0.001uF +16V R903 100 OHM 1/4W Coil ZD9 01 Q904 T ZX 18 B C918 KTD1028 1000uF 25V D901 R905 FMX-12SL 470OHM +-5% 1/10W R906 C907A 100K OMH 2W +-5%... - Page 35 +5V1 +5V1 R602 R603 10K 1/10W 5% C609 1uF/25V 10K 1/10W 5% R609 IC601 CN602 LOUT- SE/BTL LOUT- CN601 VOLUME LOUT+ R604 10K 1/10W 5% C601 0.47uF/16V LIN- LOUT+ ROUT+ C606 0.47uF/16V RIN- ROUT+ BY PASS ROUT- R605 10K 1/10W 5% SHUTDOWN ROUT- PHONEJACK...
- Page 36 Converter 715G4013P02001004S D801 L801 CN801 +14.5V 22uH Q806 F801 AO4828L SK310B C810 C812 220P 50V R801 33UF 100V 4.7UF 100V C809 R805 0R05 4A 1/4W 10 OHM 1% 100uF 50V C807 R839 270K 1/8W 5% CONN C803 0R05 1/10W ON/OFF U801 470N 25V CN804...
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Page 37: Pcb Layout
7. PCB Layout 7.1 Main Board 715G3737M02000004S... -
Page 38: Power Board
7.2 Power Board Adapter 715G2892P01020001C... - Page 39 Converter 715G4013P02001004S...
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Page 41: Key Board
7.3 Key Board 715G4007K01000004F 7.4 USB Board 715G2663T01001001C 715G3501 3... -
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 1. 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 converter board Replace main board and check connections Replace key board and check connections... - Page 44 2. No Video (Power LED Blue) No Video (Power LED Blue) Press the power Replace the main board button is OK? Replace the converter The end board Replace the main The end board and connection Replace the LVDS/FFC Check the LVDS/FFC cable or panel cable or panel Replace the key board...
- 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...
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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 simple use “SC” key and “NEXT” Key to modify xyY value and use “ID” key to modify the TEXT description Following is the procedure to do white-balance adjust . - 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.
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Page 49: Monitor Exploded View
10. Monitor Exploded Views item part name Description BEZEL PANEL POWER BOARD MAIN BOARD USB BOARD USB BOARD KEY BOARD E941SW MAINFRAME EAR PHONE STAND REAR COVER KEY PAD KEY PAD HOLDER HINGE STAND STAND COVER BASE-941 FOOT WEB CAM COVER 0M1G 130 5120 0D1G1030 8120 AM1G1740 10120... -
Page 50: Bom List
MAIN_FRAME A34G0501ABJ 1B VESA COVER ADPCA1603HE4 ADAPTER BOARD H40G 001624 1A CARTON LABEL BARCODE 1 H40G 18N61574C E941PWA EU ID LABEL H40G 45762413B P/N LABEL FOR BASE H40G 58361548A 941 USB LABEL H40G 58361561A LED LABEL H40G000261535A WIN7 EPA TCO05 LABEL--Erect H41G780961513A TCO5.0 CARD... - Page 51 Q34G7138AEDZ1B0100 BEZEL e941Pwa Q40G 58162435A LABEL Q40G000170018A LABEL Q45G 76 28 H P.E. BAGx320x210x0.04 Q52G 1185 99 BIG CARTON TAPE FOR AOC Q52G6019 14 TAPE E09501 S95G80183H92 HARNESS 30P-30P 140MM USBAHA1 USB BOARD USBAHA6 USB BOARD 0Q1G 330 8120 SCREW...
- Page 52 IC601 056G 616 51 IC APA2071JI-TUG 3.1W DIP-16 BD901 093G 50460 28 BRIDGE DIODE KBP208G LITEON CN402 033G3802 6B Y WAFER CN701 033G3802 9B Y CONN 2.0 9P CN101 088G 35315F CH D-SUB CONN WITH SCREW 15P CN102 088G 35424F CH DVI 24PIN CONN F ATTACHED SCREW X401 093G 2251B J...
- Page 53 R910 061G1206101 JF RST CHIPR 100 OHM +-5% 1/4W FENGHUA R909 061G1206101 JF RST CHIPR 100 OHM +-5% 1/4W FENGHUA R903 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN R929 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN R930 061G1206101 JT RST CHIPR 100 OHM +-5% 1/4W TZAI YUAN...
- Page 54 Q401 057G 417 13 T SMALLTRAN 2N3906S-RTK/PS 0.2A 40V SOT-23 Q402 057G 417 13 T SMALLTRAN 2N3906S-RTK/PS 0.2A 40V SOT-23 Q705 057G 763940 MOSFET AO3401A SOT-23 R711 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R410 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN R409 061G0402000 JT RST CHIPR MAX0R05 1/16W TZAI YUAN...
- Page 55 R411 061G0402223 JF RST CHIPR 22KOHM 5% 1/16W FENGHUA R719 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R701 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R427 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R425 061G0402223 JT RST CHIP 22K 1/16W 5% TZAI YUAN R133...
- Page 56 C408 065G040210425K CAP 0402 100NF 10% 25V X5R C409 065G040210425K CAP 0402 100NF 10% 25V X5R C410 065G040210425K CAP 0402 100NF 10% 25V X5R C411 065G040210425K CAP 0402 100NF 10% 25V X5R C406 065G0402105A5K CAP 0402 1UF 10% 10V X5R C414 065G0402105A5K CAP 0402 1UF 10% 10V X5R...
- Page 57 E715 715G4007K01000004I KEY BOARD PCB E715 715G4007K01000004L KEY BOARD PCB 2nd source C503 065G060310432K CAP 0603 100NF 10% 50V X7R C501 065G060350931C CAP CHIP 0603 5P 50V NPO +/- 0.25PF C502 065G060350931C CAP CHIP 0603 5P 50V NPO +/- 0.25PF FB501 071G 56K121 M CHIP BEAD 120OHM 6A MGLB2012-120T-LF...
- Page 58 Q806 057G 763947 MOSFET APM8005KCTRG 6A 80V SOP-8 R809 061G06031002FT RST CHIP 10K 1/10W 1% R806 061G0603102 JF RST CHIPR 1K OHM +-5% 1/10W FENGHUA R808 061G0603102 JF RST CHIPR 1K OHM +-5% 1/10W FENGHUA R804 061G0603104 JF RST CHIPR 100KOHM 5% 1/10W FENGHUA R802 061G06032003FF RST CHIPR 200KOHM 1/10W FENGHUA...