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17" LCD Color Monitor
Service
Service
Service
Table Of Contents......................................................1
Revision List........................................................2
Important Safety Notice.....................................3
1.Monitor Specification...............................................4
2.LCD Monitor Description........................................6
3.Operation Instruction............................................7
3.1.General Instructions.........................................7
3.2.Control Button......................................................7
3.3.OSD Menu.............................................................8
4. Input/Output Specification.......................................11
4.1. Input Signal Connector.........................................11
4.2. Power Supply Requirements...............................12
4.3. Factory Preset Display Modes...............................12
4.4. Panel Specification............................................13
5. Block Diagram........................................................16
5.1. Software Flow Chart.........................................16
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. Electrical Block Diagram.............................18
6. Schematic.....................................................20
6.1. Main Board...................................................20
6.2. Power Board.............................................25
6.3. Key Board...............................................28
7. PCB Layout....................................................29
7.1. Main Board.................................................29
7.2. Power Board..........................................31
7.3. Key Board...................................................34
8. Maintainability................................................35
8.1. Equipments and Tools Requirement..............35
8.2. Trouble Shooting.......................................36
9. White-Balance, Luminance adjustment............42
10. Monitor Exploded View..............................44
11. BOM List................................................45
SAFETY NOTICE
1
AOC 719Pa
Horizontal Frequency
31-80 KHz
Page
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Summary of Contents for AOC 719Pa
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Page 1: Table Of Contents
17" LCD Color Monitor AOC 719Pa Service Service Service Horizontal Frequency 31-80 KHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……......…..1 5.2. Electrical Block Diagram…………..……..18 6. Schematic……………........20 Revision List.…........……..2 6.1. Main Board………..........20 Important Safety Notice.……....……..3 1.Monitor Specification......………..4 6.2. Power Board...……........25 2.LCD Monitor Description……………………………..6... -
Page 2: Revision List
17" LCD Color Monitor AOC 719Pa Revision List Version Release Date Revision History TPV Model Name July.07.2008 Initial release T78SRHDBK1A1DN... -
Page 3: Important Safety Notice
AOC 719Pa 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
17" LCD Color Monitor AOC 719Pa 1. Monitor Specifications Model number 719Pa Driving system TFT Color LCD Viewable Image Size 432mm diagoanl Pixel pitch 0.264mm(H) x 0.264mm(V) LCD Panel Video R, G, B Analog lnterface & Digital Interface Separate Sync. - Page 5 17" LCD Color Monitor AOC 719Pa Non-Operating 5% to 80% (non-condensing) Altitude Operating 0~ 3000m (0~ 10000 ft ) Non-Operating 0~ 5000m (0~ 15000 ft )
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Page 6: Lcd Monitor Description
17" LCD Color Monitor AOC 719Pa 2. LCD Monitor Description The LCD monitor will contain a main board, a power board and a key board which house the flat panel control logic, brightness control logic and DDC. The power board will provide AC to DC Inverter voltage to drive the backlight of panel and the main board chips each voltage. -
Page 7: Operation Instruction
17" LCD Color Monitor AOC 719Pa 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. -
Page 8: Osd Menu
17" LCD Color Monitor AOC 719Pa 3.3 OSD Menu OSD Settings • Press the MENU-button to activate the OSD window. • Press+ or - to navigate through the functions. Once the desired function is highlighted, press the MENU-buttonto activate it.If the function selected has a sub-menu, press + or - again to navigate through the sub-menu functions.Once the desired function is highlighted, press MENU-button to activate it. - Page 9 17" LCD Color Monitor AOC 719Pa Function Control Illustration Luminance Adjust Range Description Brightness 0-100 Backlight Adjustment Contrast 0-100 Contrast from Digital-register. Standard Mode Standard Text Mode Text Internet Mode Eco mode Internet Game Mode Game Movie Mode Movie Sports...
- Page 10 17" LCD Color Monitor AOC 719Pa Color Boost Full Enhance on or off Disable or Enable Full Enhance Mode Nature Skin on or off Disable or Enable Nature Skin Mode Green Field on or off Disable or Enable Green Field Mode...
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Page 11: Input/Output Specification
17" LCD Color Monitor AOC 719Pa 4. Input/Output Specification 4.1 Input Signal Connector Analog connectors Pin No. Description Pin No. Description Video-Red Video-Green Ground Video-Blue N.C. N.C. DDC-Serial Data H-Sync Detect Cable GND-R V-Sync GND-G DDC-Serial Clock GND-B VGA connector layout DVI connectors Pin No. -
Page 12: Power Supply Requirements
17" LCD Color Monitor AOC 719Pa 4.2 Power Supply Requirements A/C Line voltage range 100 V ~ 240 V 50 ± 3Hz, 60 ± 3Hz A/C Line frequency range Current 1.5A max at 100V ; 0.8A max at 240 V Peak surge current <... -
Page 13: Panel Specification
17" LCD Color Monitor AOC 719Pa 4.4 Panel Specification 4.4.1 General Features LTM170EU-L31 is a color active matrix liquid crystal display (LCD) that uses amorphous silicon TFT (Thin Film Transistor) as switching components. This model is composed of a TFT LCD panel, a driver circuit and a back light unit. - Page 14 17" LCD Color Monitor AOC 719Pa 4.4.3 Electrical Characteristics (1) TFT-LCD (2) Backlight...
- Page 15 17" LCD Color Monitor AOC 719Pa 4.4.4 Optical Characteristics...
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Page 16: Block Diagram
17" LCD Color Monitor AOC 719Pa 5. Block Diagram 5.1 Software Flow Chat... - Page 17 17" LCD Color Monitor AOC 719Pa 1) MCU initialize. 2) Is the EPROM blank? 3) Program the EPROM by default values. 4) Get the PWM value of brightness from EPROM. 5) Is the power key pressed? 6) Clear all global flags.
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Page 18: Electrical Block Diagram
17" LCD Color Monitor AOC 719Pa 5.2 Electrical Block Diagram 5.2.1 Main Board Crystal LCD Interface 24MHz (CN601) (X401) EPR_SDA Scalar IC RTD2525LH-GR EPR_SCL CRYSTAR_OUT EEPROM RTD2120L-LF (Include ADC, OSD) AF24BC16-SI (U403) (U401) (U501) RTD_SCLK RTD_SD3/SDI H sync D-Data V sync... - Page 19 17" LCD Color Monitor AOC 719Pa 5.2.2 Inverter/Power Board AC input Bridge Rectifier Transformer Rectifier diodes EMI filter and Filter Start Circuit: R904、R905、R906 Feedback Circuit Control IC ON/OFF Output MOSFET Circuit Transformer Lamp Over ON/OFF Feedback Voltage Control Circuit Control IC...
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Page 20: Schematic
17" LCD Color Monitor AOC 719Pa 6. Schematic 6.1 Main Board 715G2507 2 K CN201 CMVCC CMVCC MVCC FB202 CMVCC BKLT-VBRI DIM# BKLT-EN C_PANEL_INDEX CMVCC PANEL_ID# Volume# FB201 VCC3 Volume# U201 Mute Mute VOUT 120OHM CONN C202 C204 AP1117E33LA C205 C203 0.1uF/16V... - Page 21 17" LCD Color Monitor AOC 719Pa DSUB_V R302 0R05 1/16W R301 100R 1/16W 5% RTD_H R303 100R 1/16W 5% RTD_V R304 R305 C302 C303 ZD302 ZD303 2K2 1/16W FB302 C304 UDZS5.6B UDZS5.6B 2K2 1/16W 33pF 33pF R306 100R 1/16W 5%...
- Page 22 17" LCD Color Monitor AOC 719Pa 150 OHM DVI_5V DSUB_5V FB401 CMVCC D402 BAV70 D401 CMVCC MCU_VCC_S MCU_VCC Q401 D403 PMBS3904 MCU_VCC_S '06-11-24 LL4148 C402 ADD D403 R402 C412 1uF 10V 1K 1/16W 5% R403 1uF 10V MCU_VCC '06-11-03 3.9K OHM 1/16W...
- Page 23 17" LCD Color Monitor AOC 719Pa 1.8AVCC R1.8DVCC 150 OHM FB501 Q501 R1.8DVCC1 VCC3 KN2907AS Q502 C507 R507 3.3 OHM 2W FB503 C506 C501 KN2907AS 120OHM C505 0.1uF/16V 0.1uF/16V 0.1uF/16V C502 22uF50V DGND VCC3 TMDS_VDD FB502 120OHM C503 0.1uF/16V U501...
- Page 24 17" LCD Color Monitor AOC 719Pa LVDS Panel ( FFC Type ) CN601 LVDS_O[0..9] RXO0- LVDS_O0 RXO0- RXO0+ LVDS_O1 RXO0+ RXO1- LVDS_O2 RXO1- RXO1+ LVDS_O3 RXO1+ RXO2- LVDS_O4 RXO2- RXO2+ LVDS_O5 RXO2+ RXOC- LVDS_O6 RXOC- RXOC+ LVDS_O7 RXOC+ RXO3- LVDS_O8...
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Page 25: Power Board
17" LCD Color Monitor AOC 719Pa 6.2 Power Board 715G2824 1 2 D909 NC/31DQ10FC R918 L904 100 OHM 1/4W 2A(INVERTER) R919 100 OHM 1/4W +16V FB904 C912 R920 BEAD 0.001uF ZD902 100 OHM 1/4W R946 RLZ18B 150 OHM 2W C917... - Page 26 17" LCD Color Monitor AOC 719Pa CN801 28:28:2400 Lk:260mH CONN T801 R801 0R05 1/8W C801 18pF/6KV L801 +16V NC / L R802 CN802 100R 1/8W C825 CONN 18pF/6KV R804 0R05 1/8W R805 NC/4K7 1/10W 5% R810 Q802 R808 Q801 R850...
- Page 27 17" LCD Color Monitor AOC 719Pa +5V1 +5V1 C604 R602 100uF/25V 10K 1/10W 5% R603 10K 1/10W 5% C609 1uF/25V 10K 1/10W 5% CN602 R609 IC601 APA2069JITUL CN601 LOUT- CONN R604 SE/BTL LOUT- PHONEJACK VOLUME 10K 1/10W 5% C601 0.47uF/16V...
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Page 28: Key Board
17" LCD Color Monitor AOC 719Pa 6.3 Key Board 715G2835 1... -
Page 29: Pcb Layout
17" LCD Color Monitor AOC 719Pa 7. PCB Layout 7.1 Main Board 715G2507 2 K... - Page 30 17" LCD Color Monitor AOC 719Pa...
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Page 31: Power Board
17" LCD Color Monitor AOC 719Pa 7.2 Power Board 715G2824 1 2... - Page 32 17" LCD Color Monitor AOC 719Pa...
- Page 33 17" LCD Color Monitor AOC 719Pa...
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Page 34: Key Board
17" LCD Color Monitor AOC 719Pa 7.3 Key Board 715G2835 1... -
Page 35: Maintainability
17" LCD Color Monitor AOC 719Pa 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 36: Trouble Shooting
17" LCD Color Monitor AOC 719Pa 8.2 Trouble Shooting 8.2.1 Main Board (1). No Power No power Press power key and look if the picture is normal Please reinsert and make sure the AC of 100-240 is normal Reinsert or check the power section Measure U201 Pin2=3.3V... - Page 37 17" LCD Color Monitor AOC 719Pa (2). No Picture No picture Measure U201 PIN2=3.3V Replace U201 X401 oscillate waveforms are normal Replace X401 Check U401 Replace U401 Check if the sync signal from computer is output and video cable is connected normally...
- Page 38 17" LCD Color Monitor AOC 719Pa (3). White screen White screen Measure Q602 base X401 oscillate is low level? waveform is normal Replace X401 Check Q602, Q601 is broken Check U401 or CN601 solder? Replace U401 Check Correspondent Check reset circuit of component.
- Page 39 17" LCD Color Monitor AOC 719Pa 8.2.2 Power/Inverter Board 1.) No power Check ZD902 (-) = 16V Check AC line volt 110V or 220V Check AC input Check the voltage of C905 (+) Check bridge rectified circuit and F901 circuit...
- Page 40 17" LCD Color Monitor AOC 719Pa 2.) W / LED, No Backlight Check ZD902 (-) = 16V Check adapter or MB Check ON/OFF signal Check Interface board Check IC801 PIN2=5V Check Q801 and Q802 Check IC801 PIN1, 15 have the output of square wave at short Change IC801 Check Q804 and Q809 PIN5, 6, 7, 8 have the output of square wave at short time.
- Page 41 17" LCD Color Monitor AOC 719Pa 8.2.3 Key Board OSD is unstable or not working Is Key Pad Board connecting normally? Connect Key Pad Board Replace Button Switch Is Button Switch normally? Replace Key Pad Board Is Key Pad Board normally?
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Page 42: White-Balance, Luminance Adjustment
= 313 ±30, y = 329 ±30, Y>150cd/m 3. Into Factory mode of AOC 719Pa: Press the MENU button, pull out the power cord, and then plug the power cord. Then the factory OSD will be at the left top of the panel. - Page 43 17" LCD Color Monitor AOC 719Pa 4. Adjust the RED on factory window until chroma 7120 indicator reached the value R=100 5. Adjust the GREEN on factory window until chroma 7120 indicator reachedthe value G=100 6. Adjust the BLUE on factory window until chroma 7120 indicator reached the value B=100 7.
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Page 44: Monitor Exploded View
17" LCD Color Monitor AOC 719Pa 10. Monitor Exploded View... -
Page 45: Bom List
17" LCD Color Monitor AOC 719Pa 11. BOM List T78SRHDBK1A1DN Location Part No. Description 001G6017 1 THUMB-SCREW 040G 581 26704 SHIPPING LABEL 040G 58162461A EPA LABEL 041G 68508 A CONTROL CARD 044G6000 4 6B PAPER BOARD 044G6002700 4A PAPER BOARD... - Page 46 17" LCD Color Monitor AOC 719Pa CN301 088G 35315F H D-SUB 15PIN CN302 088G 35424F N DVI 24PIN CONN F WITH SCREWS X401 093G 22 45 H 24MHZ/30PF/49US 040G 457624 1B LABEL-CPU U402 056G 158501 IC AS431AN-E1 SOT23 U501 056G 562180...
- Page 47 17" LCD Color Monitor AOC 719Pa R435 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R442 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R508 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R509 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R503 061G0402102...
- Page 48 17" LCD Color Monitor AOC 719Pa R414 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R443 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R444 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R445 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R451 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W...
- Page 49 17" LCD Color Monitor AOC 719Pa C304 065G0402473 12 CHIP 0.047uF 16V X7R C306 065G0402473 12 CHIP 0.047uF 16V X7R C307 065G0402473 12 CHIP 0.047uF 16V X7R C309 065G0402473 12 CHIP 0.047uF 16V X7R C311 065G0402473 12 CHIP 0.047uF 16V X7R...
- Page 50 17" LCD Color Monitor AOC 719Pa Q205 057G 417512 MMBT3906 Q602 057G 417512 MMBT3906 Q601 057G 763513 P6403FMG BY NIKO-SEM ZD301 093G 39S501 T LUDZS5.6BT1G BY LRC ZD305 093G 39S501 T LUDZS5.6BT1G BY LRC ZD307 093G 39S501 T LUDZS5.6BT1G BY LRC...
- Page 51 17" LCD Color Monitor AOC 719Pa C900 065G306M3322BP 3300PF 20% C934 067G215P1023AV CAP 105℃ 1000UF M 16V C916 067G215P1023AV CAP 105℃ 1000UF M 16V C939 067G215P1024AV CAP 105℃ 1000UF M 25V C915 067G215P4713AV CAP 105℃ 470UF M 16V C811 067G215P4714AV CAP 105℃...
- Page 52 17" LCD Color Monitor AOC 719Pa Q807 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q810 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q811 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q903 057G 417 4 PMBS3904/PHILIPS-SMT(04) Q806 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q805 057G 417 6 PMBS3906/PHILIPS-SMT(06) Q607 057G 417 6...
- Page 53 17" LCD Color Monitor AOC 719Pa R927 061G0603243 1F RST CHIPR 2.43K OHM +-1% 1/10W R930 061G0603243 1F RST CHIPR 2.43K OHM +-1% 1/10W R610 061G0603273 Y RST CHIPR 27KOHM +-5% 1/10W YAGEO R815 061G0603330 2F RST CHIPR 33K OHM +-1% 1/10W...
- Page 54 17" LCD Color Monitor AOC 719Pa RJ801 061G1206000 RST CHIPR 0 OHM +-5% 1/4W RJ802 061G1206000 RST CHIPR 0 OHM +-5% 1/4W RJ803 061G1206000 RST CHIPR 0 OHM +-5% 1/4W RJ804 061G1206000 RST CHIPR 0 OHM +-5% 1/4W RJ805 061G1206000...
- Page 55 17" LCD Color Monitor AOC 719Pa C810 065G0603104 22 CAP CHIP 0603 0.1UF K 25V X7R C802 065G0603105 12 CHIP 1UF 16VX7R 0603 C806 065G0603105 12 CHIP 1UF 16VX7R 0603 C819 065G0603105 12 CHIP 1UF 16VX7R 0603 C820 065G0603105 12...
- Page 56 17" LCD Color Monitor AOC 719Pa D810 093G 64 33 DIO SIG SM BAV99 (PHSE)R D806 093G 64 38 D DIODE BAW56 DIODES D808 093G 64 38 D DIODE BAW56 DIODES D903 093G 6432P LL4148 D812 093G 6432P LL4148 D811...
- Page 57 17" LCD Color Monitor AOC 719Pa J806 095G 90 23 JUMPER J804 095G 90 23 JUMPER J803 095G 90 23 JUMPER J802 095G 90 23 JUMPER J801 095G 90 23 JUMPER J604 095G 90 23 JUMPER J603 095G 90 23...
- Page 58 Q44GSLIP10088A PLASTIC SLIPSHEET Q45G 77 5 PE PACKING Q45G 88607 34 PE BAG FOR BASE Q45G 88609 91 EPE BAG FOR MONITOR Q52G 1185 99 BIG CARTON TAPE FOR AOC S89G179T30N577 LVDS ASS'Y 089F80002603AG 1.0*30*2.5-260-3-0.65*0.05 033F303FH10BK3 F1010HA-30P-BK 033F303FJSHK30 1.0S-19-30A 041G780061553A...
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