AOC 719Sa+ Service Manual

AOC 719Sa+ Service Manual

17" lcd color monitor

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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........................................5
3.Operation Instruction..............................................6
3.1.General Instructions..............................................6
3.2.Control Button......................................................6
3.3.OSD Menu.............................................................7
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.........................................................20
5.1.Main Board......................................................20
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.............................................21
6.Schematic.....................................................22
6.1.Main Board...................................................22
6.2.Power Board.............................................27
6.3.Key Board...................................................33
7.PCB Layout.....................................................34
7.1.Main Board.................................................34
7.2.Power Board...............................................36
7.3.Key Board....................................................42
8.Maintainability................................................43
8.2.Trouble Shooting..........................................44
10.Monitor Exploded View.................................50
11.BOM List...................................................52
SAFETY NOTICE
AOC 719Sa+
Horizontal Frequency
31-80 KHz
Page

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Summary of Contents for AOC 719Sa+

  • Page 1: Table Of Contents

    17" LCD Color Monitor AOC 719Sa+ Service Service Service Horizontal Frequency 31-80 KHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……........…..1 5.2.Power Board………………...…………..…..21 6.Schematic……………........22 Revision List.…..........……..2 6.1.Main Board………..........22 Important Safety Notice.………..…....……..3 1.Monitor Specification......………..4 6.2.Power Board...……........27 2.LCD Monitor Description……………………………..5 6.3.Key Board...……..........33...
  • Page 2: Revision List

    Revision List Version Release Date Revision History TPV Model Name T79ARDDBK1K3AN Mar.01, 2010 Initial release T79CRDDBK1K2AN T79SRDDBK1K2AN Apr.28.2010 Add new model T79ARDDBK1K3AC Nov.25.2010 Add new model T79SRDDBK1K2AN Mar.31.2011 Add new model T79CRDDEKMSPAN Dec.9.2011 Add new model T79CRDDEKMACAN...
  • 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 Model number 719Sa+ Driving system TFT Color LCD Viewable Image 43.3cm diagoanl Pixel pitch 0.264mm(H) x 0.264mm(V) LCD Panel Video R, G, B Analog lnterface Separate Sync. H/V TTL Display Color 16.7M Colors Dot Clock 135 MHz Horizontal scan 31 kHz - 80 kHz Horizontal scan...
  • Page 5: Lcd Monitor Description

    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 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. * The power cord should be connected.
  • Page 7: Osd Menu

    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-button to 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 8 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 Eco mode Internet Mode Internet Game Mode Game Movie Mode Movie Sports Mode Sports Gamma1 Adjust to Gamma1 Gamma Gamma2 Adjust to Gamma 2...
  • Page 9 picture. Adjust the horizontal position of V.Position 0-100 the picture. Color Temp. Recall Warm Color Temperature Warm from EEPROM. 6500K Recall Normal Color Normal Temperature from EEPROM. 7300K Recall Cool Color Temperature Cool from EEPROM. 9300K Recall SRGB Color Temperature sRGB from EEPROM.
  • Page 10 OSD Setup Adjust the vertical position of H.Position 0-100 Adjust the horizontal position of V.Position 0-100 Timeout 5-120 Adjust the OSD Timeout Transparence 0-100 Adjust the transparence of OSD Language Select the OSD language Extra Auto Select to Auto Detect input signal Select Analog Sigal Source as Analog Input...
  • Page 11: Input/Output Specification

    4. Input/Output Specification 4.1 Input Signal Connector Analog connectors Pin Number 15-Pin Side of the Signal Cable Video-Red Video-Green Video-Blue N.C. Detect Cable GND-R GND-G GND-B Ground N.C. DDC-Serial data H-sync V-sync DDC-Serial clock...
  • Page 12: Power Supply Requirements

    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

    4.4 Panel Specification 4.4.1 General Features T79ARDDBK1K3AN This specification applies to the 17 inch Color TFT-LCD Module M170EG01 VD.The display supports the SXGA+ (1280(H) x 1024(V)) screen format and 16.2M colors (RGB 6-bits+ RFC data).All input signals are 2 Channel LVDS interface compatible.
  • Page 14 T79CRDDBK1K2AN T79SRDDBK1K2AN...
  • Page 15 4.4.3 Electrical Characteristics T79ARDDBK1K3AN Backlight T79CRDDBK1K2AN (1)TFT-LCD Ta=25℃...
  • Page 16 (2)Backlight T79SRDDBK1K2AN (1) TFT LCD Module Ta = 25°C...
  • Page 17 (2)Back Light Unit Ta=25 ± 2°C 4.4.4 Optical Characteristics T79ARDDBK1K3AN The optical characteristics are measured under stable conditions at 25 ℃ (Room Temperature):...
  • Page 18 T79CRDDBK1K2AN Ta=25℃, VCC=5.0V...
  • Page 19 T79SRDDBK1K2AN (Ta = 25 ± 2°C, VDD=5V, fv= 60Hz, fDCLK=54MHz, IL = 6.5mArms)
  • Page 20: Block Diagram

    5. Block Diagram 5.1 Main Board Crystal 24MHz LCD Interface (X401) (CN601) EPR_SDA EEPROM Scalar IC RTD2025L EPR_SCL AF24BC16 RTD2120L-LF (Include ADC, OSD) (U403) (U401) (U501) H sync V sync DDC1_SCL Key Control DDC1_SDA D-Sub Connector Interface (CN301) (CN202)
  • Page 21: Power Board

    5.2 Inverter/Power Board T79ARHDBK1K2DN&T77SRHDBK1K2DN 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 T79CRHDBK1K2DN AC input Bridge Rectifier Transformer...
  • Page 22: Schematic

    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 0.1uF/16V VCC3 R202 4K7 1/16W BKLT-EN R201 200 OHM 1/16W...
  • Page 23 DSUB_V R302 0R05 1/16W R301 100R 1/16W RTD_H R303 100R 1/16W RTD_V R304 R305 C302 C303 ZD302 ZD303 2K2 1/16W FB302 C304 UDZS5.6B UDZS5.6B 2K2 1/16W 33pF 33pF R306 360R OHM 1/16W 5% VGA_B+ RTD_B+ RTD_B+ BEAD CN301 R307 C305 0.047uF 5pF/50V 75R 1/16W...
  • Page 24 NC/150 OHM DVI_5V DSUB_5V FB401 CMVCC D402 BAV70 D401 CMVCC MCU_VCC_S MCU_VCC Q401 D403 PMBS3904 MCU_VCC_S LL4148 C402 R402 C412 1uF 10V 1K 1/16W R403 1uF 10V MCU_VCC 3.9K OHM 1/16W C404 R405 R406 R407 U402 AZ431AN-AE1 0.1uF/16V R404 10K 1/16W U403 BAT54C MCU_VCC...
  • Page 25 1.8AVCC R1.8DVCC 0R05 1/10W 5% 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 R508 NC/100R 1/16W RTD_DDCSDA VCC3 DDC2_SDA R509 NC/100R 1/16W...
  • Page 26 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 RXO3- RXO3+ LVDS_O9 RXO3+ RXE0- LVDS_E[0..9] RXE0+ LVDS_E0 RXE0-...
  • Page 27: Power Board

    6.2 Power Board T79ARDDBK1K3AN&T79SRDDBK1K2AN 715G2824 2 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 FB902 680uF25V C918 80OHM 680uF25V R943 BD901A T901...
  • Page 28 CN801 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 15R 1/4W 5% 10K 1/10W 1% PDTC144WK PDTA144WK 15R 1/4W 5% POWER X'FMR R806...
  • Page 29 +5V1 +5V1 R602 10K 1/10W 5% C604 100uF/25V R603 10K 1/10W 5% C609 1uF/25V 10K 1/10W 5% R609 IC601 CONN LOUT- SE/BTL LOUT- CN601 VOLUME C601 0.47uF/16V LOUT+ LIN- LOUT+ R604 10K 1/10W 5% C606 0.47uF/16V ROUT+ RIN- ROUT+ BY PASS R605 10K 1/10W 5% ROUT-...
  • Page 30 T79CRDDBK1K2AN 715G2824P0100A001S BD901A KBP208G 100 OHM 1/4W R918 L904 +16V 100 OHM 1/4W R919 3.5uH BD901A C912 R946 0.001uF R947 820OHM 2W 100 OHM 1/4W R920 ZD902 0 OHM 1/4W C917 C918 820OHM 2W T ZX18B 680UF25V 680UF25V D906 FMX-12SL FB902 T901 R943...
  • Page 31 4R7 1/8W 5% R817 +16V Q805 ZD802 ON/OFF RLZ5.6B ZD803 G1 D1 RLZ5.6B R816 4R7 1/8W 5% R803 R804 PT801 AO4620 5K1 1/8W 5% 5K1 1/8W 5% POWER X'FMR C815 0.1uF R819 Q806 C802 4R7 1/8W 5% 0..047F 50V G1 D1 R802 R847 22R 1/8W 5%...
  • Page 32 +5V1 +5V1 C604 R602 10K 1/10W 5% 100uF/25V R603 10K 1/10W 5% C609 1uF/25V 10K 1/10W 5% R609 IC601 CN602 LOUT+ SE/BTL LOUT- CN601 VOLUME R604 10K 1/10W 5% C601 0.47uF/16V LOUT- LIN- LOUT+ C606 0.47uF/16V ROUT- RIN- ROUT+ BY PASS R605 10K 1/10W 5% ROUT+...
  • Page 33: Key Board

    6.3 Key Board 715G2835 2 LED_RED# LED_GRN# LED001 CN001 LBADC1 R002 2K OHM 1/4W LBADC2 DC_POWERON R003 0R05 1/10W 1% LED_GRN# LED_RED# C001 C002 C003 C004 C005 R004 2K OHM 1/4W R005 1K 1/10W 1% NC/0.001uF NC/0.001uF NC/0.001uF NC/0.001uF NC/0.001uF CONN SW005 SW004...
  • Page 34: Pcb Layout

    7. PCB Layout 7.1 Main Board 715G2507 2 K...
  • Page 36: Power Board

    7.2 Power Board T79ARDDBK1K3AN&T79SRDDBK1K2AN 715G2824 2 2...
  • Page 39 T79CRDDBK1K2AN 715G2824P0100A001S...
  • Page 42: Key Board

    7.3 Key Board 715G2835 2...
  • Page 43: 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 44: 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 45 No Video No Video 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 Replace the LVDS/FFC Check the LVDS/FFC cable or panel cable or panel Replace the key board...
  • Page 46 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 47 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 48: White-Balance, Luminance Adjustment

    = 313 ±30, y = 329 ±30, Y>150cd/m 3. Into Factory mode of AOC 719Sa+: 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 49 B. Adjust Normal (7300K) color-temperature 1. Switch the chroma-7120 to RGB-Mode (with press “MODE” button) 2. Switch the MEM.channel to Channel 4(with up or down arrow on chroma 7120) 3. The LCD-indicator on chroma 7120 will show x = 302 ±30, y = 318 ±30, Y>150cd/m 4.
  • Page 50: Monitor Exploded View

    10. Monitor Exploded View...
  • Page 51 Description BEZEL L17A-8Q1A LENS KEY PAD MAINFRAME REAR COVER 17 Part No. Description HINGE 0M1G1730 6120 SCREW,42-D020523(FOR MB&PB/MAINFRAME) STAND TOP 0M1G 130 5120 SCREW(FOR MAINFRAME/PANEL) STAND AM1G1740 12 47 CR3 SCREW(FOR HINGE) BASE8S2 AM1G1740 10 47 CR3 SCREW(FOR HINGE)
  • Page 52: Bom List

    11. BOM List Note: The parts information listed below are for reference only, and are subject to change without notice. Please go http://cs.tpv.com.cn/hello1.asp for the latest information. T79ARDDBK1K3AN Location Part No. Description Remark 050G 600 3 HANDLE2 050G 600 4 HANDLE 1 052G 1209 A...
  • Page 53 756GQ9CB AA051 01 MAIN BOARD-CBPC9RDA1QF SMTC9-U401 100GARA7001Y11 MCU ASS'Y-056G1125701 X AM1G1740 12 47 CR3 SCREW 040G 45762412B CBPC LABEL CN202 033G3802 6 WAFER CN201 033G3802 9 WAFER 9P RIGHT ANELE PITCH CN601 033G801930F CH JS CONNECTOR R507 061G152M339 64 CHIPR 3.3 OHM +-5% 2W C405 067G 3151007KV ELCAP 10UF M 50V 105℃...
  • Page 54 R302 061G0402000 RST CHIP MAX 0R05 1/16W R429 061G0402000 RST CHIP MAX 0R05 1/16W R301 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R303 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R306 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R308 061G0402101 RST CHIPR 100 OHM +-5% 1/16W R309 061G0402101...
  • Page 55 R403 061G0402392 RST CHIP 3.9K 1/16W 5% R401 061G0402392 RST CHIP 3.9K 1/16W 5% R202 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R411 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R412 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R413 061G0402472 RST CHIPR 4.7 KOHM +-5% 1/16W R414 061G0402472...
  • Page 56 C309 065G040247312K 8.31HIP 0402 47NF K 16V X7R C307 065G040247312K 8.31HIP 0402 47NF K 16V X7R C306 065G040247312K 8.31HIP 0402 47NF K 16V X7R C304 065G040247312K 8.31HIP 0402 47NF K 16V X7R C301 065G040247312K 8.31HIP 0402 47NF K 16V X7R C310 065G040250931J CAP 0402 5PF J 50 NPO...
  • Page 57 KEPC8QI6 KEY BOARD CN001 033G3802 6 H WAFER 6P RIGHT ANGLE PITCH 2.0 D001 081G 12 1F GH LED 3PIN Φ3 YELLOW&GREEN GHZYG603D2-5B D001 081G 12 1F GP LED 3Φ YELLOW&GREEN 709G2835 QM001 CONSUMPTIVE ASS'Y R003 061G0603000 1F RST CHIPR 0 OHM +-1% 1/10W R005 061G0603100 1F RST CHIPR 1 KOHM +-1% 1/10W...
  • Page 58 C811 067G215D4714KV E.C 105℃ CAP 470UF M 25V ED SERIES C805 067G215D4714KV E.C 105℃ CAP 470UF M 25V ED SERIES C916 067G215S1023KV EC CAP 105℃ 1000UF M 16V C934 067G215S1023KV EC CAP 105℃ 1000UF M 16V C939 067G215S1024KV EC 105℃ CAP 1000UF M 25V C915 067G215S4713KV EC 105℃...
  • Page 59 Q55G 100625 TIN STICK_LOW ARGENTUM U801 056G 379 22 IC TL494IDR SOIC-16 U901 056G 379 98 IC LD7552DPS SOP-8 Q803 057G 417 4 PMBS3904/PHILIPS-SMT(04) 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) Q608...
  • Page 60 R823 061G0603103 RST CHIPR 10 KOHM +-5% 1/10W R809 061G0603105 RST CHIPR 1M OHM +-5% 1/10W R821 061G0603105 RST CHIPR 1M OHM +-5% 1/10W R818 061G0603205 RST CHIPR 2 MOHM +-5% 1/10W R844 061G0603220 RST CHIPR 22 OHM +-5% 1/10W R847 061G0603220 RST CHIPR 22 OHM +-5% 1/10W...
  • Page 61 R925 061G08051001FY RST CHIPR 1KOHM +-1% 1/8W YAGEO R939 061G08051001FY RST CHIPR 1KOHM +-1% 1/8W YAGEO R835 061G08051001FY RST CHIPR 1KOHM +-1% 1/8W YAGEO R834 061G08051001FY RST CHIPR 1KOHM +-1% 1/8W YAGEO R807 061G08051001FY RST CHIPR 1KOHM +-1% 1/8W YAGEO R806 061G08051001FY RST CHIPR 1KOHM +-1% 1/8W YAGEO...
  • Page 62 R918 061G1206101 RST CHIPR 100 OHM +-5% 1/4W R901 061G1206105 1M 1206 R902 061G1206105 1M 1206 R810 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R837 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R850 061G1206150 RST CHIPR 15 OHM +-5% 1/4W R851 061G1206150 RST CHIPR 15 OHM +-5% 1/4W...
  • Page 63 C823 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% C824 065G080510432K CAP CHIP 0805 100N 50V X7R +/-10% C608 065G080510522K CAP CHIP 0805 1UF K 25V X7R C609 065G080510522K CAP CHIP 0805 1UF K 25V X7R C803 065G080515232K CAP CHIP 0805 1N5 50V X7R +/-10% C816 065G080515232K CAP CHIP 0805 1N5 50V X7R +/-10%...
  • Page 64 C605 067G215Y2207KT CAP 105℃ 22UF M 50V KINGNICHI C908 067G215Y2207KT CAP 105℃ 22UF M 50V KINGNICHI FB602 071G 55 9 T FERRITE BEAD FB901 071G 55 29 FERRITE BEAD FB903 071G 55 29 FERRITE BEAD FB904 071G 55 29 FERRITE BEAD F901 084G 56 3 B FUSE 3.15A 250V...
  • Page 65 Q44G7093201 Q44G7093615 5B 17"LCD CARTON Q45G 88609205 EPE BAG Q50G 4 10 TIE (Y1900221) Q52G 1185 99 BIG CARTON TAPE FOR AOC Q70G17C1615 3A 719SA+ CD MANUAL 041G780061553A TCO'03 CARD E08904 089G 17356C554 AUDIO CABLE E08904 089G 17356X554 AUDIO CABLE...

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