AOC LM960S Service Manual
AOC LM960S Service Manual

AOC LM960S Service Manual

19 inch lcd color monitor
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19" LCD Color Monitor
Service
Service
Service
Description
Table Of Contents..........................................................1
Important Safety Notice...............................................2
Revision List.................................................................3
1.Product Feature...............................................4
2.LCD Monitor Description........................................5
3.Operation Instruction............................................6
3.1 General Instructions.....................................................6
3.2 Control Buttons........................................................6
3.3 Adjusting the Picture..........................................8
4.Input/Output Specification.......................................10
4.1 Input Signal Connector............................................10
4.2 Factory Preset Display Modes.................................10
4.3 Power Supply Requirement..................................11
4.4 Panel Specification..................................................12
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........................................................26
7.PCB Layout..........................................................29
7.1 Main Board.....................................................29
7.2 Power Board........................................................32
7.3 Key Board...........................................................34
8.Maintainability.......................................................35
8.1 Equipments and Tools Requirement......................35
8.2 Trouble Shooting................................................35
10. Monitor Exploded View.......................................42
11.BOM List................................................................43
12.Different Parts List...................................................57
SAFETY NOTICE
1
AOC LM960s
Horizontal Frequency
30 KHz-83 KHz
Page

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Summary of Contents for AOC LM960S

  • Page 1: Table Of Contents

    19” LCD Color Monitor AOC LM960s Service Service Service Horizontal Frequency 30 KHz-83 KHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……....……...…..1 5.2 Electrical Block Diagram……….………..…..…..18 Important Safety Notice.………….…....……..2 6.Schematic……………........…..20 Revision List.…......………....……..3 6.1 Main Board..............20 1.Product Feature......………..4 6.2 Power Board..…………..……......26 2.LCD Monitor Description……………………………..5...
  • Page 2: Important Safety Notice

    AOC LM960s 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 3: Revision List

    19” LCD Color Monitor AOC LM960s Revision List Version Date Revision History TPV Model Name T982KH4HK4A1NPE T982KH4HK4A2NPE Feb.-07-2007 Initial Release T982KH4HK4A1ZPE T96HM4HQAVA2FE...
  • Page 4: Product Feature

    19” LCD Color Monitor AOC LM960s 1. Monitor Specifications Driving system TFT Color LCD LCD Panel Size 48cm(19") Pixel pitch 0.294mm( H ) × 0.294mm( V ) Video R,G,B Analog Interface Separate Sync. H/V TTL Input H-Frequency 30kHz – 83kHz...
  • Page 5: Lcd Monitor Description

    19” LCD Color Monitor AOC LM960s 2. LCD Monitor Description The LCD monitor will contain a main board, a power board, a key board which house the flat panel control logic, brightness control logic and DDC. The Inverter board will drive the backlight of panel and DC-DC conversion.
  • Page 6: Operation Instruction

    19” LCD Color Monitor AOC LM960s 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The other control buttons are located at front panel of the monitor. By changing these settings, the picture can be adjusted to your personal preferences.
  • Page 7 19” LCD Color Monitor AOC LM960s FRONT PANEL CONTROL • Power Button: Press this button to turn the monitor ON or OFF. • Power Indicator: Green — Power On mode. Orange — Off mode. • MENU / ENTER: Activate OSD menu when OSD is OFF or activate/de-activate adjustment function when OSD is ON or Exit OSD menu when in Brightness/ Contrast Adjust OSD status.
  • Page 8: Adjusting The Picture

    19” LCD Color Monitor AOC LM960s 3.3 Adjusting the Picture Press the MENU-button to activate the OSD window. Press 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 again to navigate through the sub-menu functions.
  • Page 9 19” LCD Color Monitor AOC LM960s Main Main Menu Icon Sub Menu Icon Description Menu Menu Item Item Auto Config Auto Adjust the H/V Position, Focus and Clock of picture. Do not execute Auto Config, return to main menu. OSD Setup H.
  • Page 10: Input/Output Specification

    19” LCD Color Monitor AOC LM960s 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description Green Detect Cable Blue DDC-Serial Data Ground H-Sync R-Ground V-Sync G-Ground DDC-Serial Clock B-Ground VGA connector layout 4.2 Factory Preset Display Modes...
  • Page 11: Power Supply Requirement

    19” LCD Color Monitor AOC LM960s 4.3 Power Supply Requirement A/C Line voltage range 100 V ~ 240 V 50 ± 3Hz, 60 ± 3Hz A/C Line frequency range Peak surge current < 55A peak at 240 VAC and cold starting Leakage current <...
  • Page 12: Panel Specification

    19” LCD Color Monitor AOC LM960s 4.4 Panel Specification HSD190ME13-A02 ; HSD190ME12-A02 4.4.1 General Features HSD190ME13-A02 HSD190ME12-A02...
  • Page 13 19” LCD Color Monitor AOC LM960s 4.4.2 Optical Characteristics HSD190ME13-A02...
  • Page 14 19” LCD Color Monitor AOC LM960s HSD190ME12-A02...
  • Page 15 19” LCD Color Monitor AOC LM960s 4.4.3 Electrical Characteristics TFT LCD Module: HSD190ME13-A02 HSD190ME12-A02 Back Light Unit: HSD190ME13-A02 HSD190ME12-A02...
  • Page 16: Block Diagram

    19”LCD Color Monitor AOC LM960s 5. Block Diagram 5.1 Software Flowing Chart...
  • Page 17 19”LCD Color Monitor AOC LM960s REMARK: 1) MCU initializes. 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.
  • Page 18: Electrical Block Diagram

    19”LCD Color Monitor AOC LM960s 5.2 Electrical Block Diagram 5.2.1 Main Board Crystal 20MHZ LCD Interface (X601) (CN503) Scalar IC TSU16AK W78E065 (Include ADC, OSD) (U601) (U401) EPR_SDA EPR_SCL H sync V sync EEPROM Key Board Control M24C16 (U602) D-Sub Crystal 14.318MHZ...
  • Page 19 19”LCD Color Monitor AOC LM960s 5.2.2 Power Board Bridge Rectifier AC input Transformer Rectifier diodes EMI filte r and Filter IC101 CN902 Start Circuit Feedback Over Voltage Control IC Circuit Protect ON/OFF Output Transformer MOSFET Circuit Lamp Feedback ON/OFF Control...
  • Page 20: Schematic

    19” LCD Color Monitor AOC LM960s 6. Schematic 6.1 Main Board TSU16AK SCHEMATIC GNDR GNDR GNDG GNDG DDC_CLK VCC2.5 VCC3.3 VAA1 VAA2 VAA3 VAA4 DDC_DAT GNDB GNDB ST_DET1 HSYNC HSYNC ST_DET2 VSYNC VSYNC VCC2.5 VCC3.3 VAA1 VAA2 VAA3 CLK+ CLK+...
  • Page 21 19” LCD Color Monitor AOC LM960s VCC5V+ VCC5V SOT-252 D202 U201 VCC12V R202 GS1D VCC2.5 VCC12V RT9164 CN201   1/16W VCC2.5 ON_OFF R201 4.7K 1/16W   C210 C211 C212 VCC12V VCC12V D201 SS14 C201 R212 4.7K   1/16W 0.1uF 47uF/16V 0.1uF...
  • Page 22 19” LCD Color Monitor AOC LM960s CN301 DB15 FB301   1/16W R301   1/16W C304 0.047uF FB302 1/16W R302 1/16W C305 0.047uF     FB303   1/16W R303   1/16W C306 0.047uF R304   1/16W C307 0.001uF PC5V R325 C301...
  • Page 23 19” LCD Color Monitor AOC LM960s VCC3.3 FB401 VCC2.5 FB402 VCC3.3 VCC2.5 600 OHM 600 OHM C405 C414 10uF/16V 10uF/16V VPLL VDVI VDPLL C406 C407 C408 C409 C410 C411 C412 C413 C415 C416 C417 C418 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF 0.1uF...
  • Page 24 19” LCD Color Monitor AOC LM960s PA[0..9] PA[0..9] LVA3P CN503 LVA3M LVACKP LVACKM LVB0M RXO0- RXO0+ LVB0P LVA2P LVB1M RXO1- RXO1+ LVB1P LVA2M LVB2M RXO2- RXO2+ LVB2P LVBCKM RXOC- RXOC+ LVBCKP LVA1P RXO3- RXO3+ LVB3M LVB3P LVA1M LVA0M RXE0- RXE0+...
  • Page 25 19” LCD Color Monitor AOC LM960s VCPU VCPU RN601 R601 R602 C601 RN602 1/16W     1/16W   1/16W 0.1uF   1/16W C602 22pF U601 X601 POWER EA/VP P0.0 ENTER P0.1 RIGHT XTAL1 P0.2 C603 20MHz LEFT P0.3 VCPU 10uF/16V AUTO P0.4...
  • Page 26: Power Board

    19” LCD Color Monitor AOC LM960s 6.2 Power Board R917 C925   1/8W 0.001uF D910 SP10150 L903 T901 73L-253-91L ER28 C928 +12V R906 R904 R903 C905   1/8W   1/8W C906 100K   BD901 150uF/400V 1500pF/1KV C915 C926 C917 D911...
  • Page 27 0805 Q214   0805 is power GND RK7002 R241 C246 D210 is signal GND 0805 0.1uF/0805 BAV99   R242 AOC (Top Victory) Electronics Co., Ltd. Q215   0805 RK7002 R243 Title PWPC1942AUN1   0805 C247 0.1uF/0805 Size Document Number G1349-2-X-X-1-06717...
  • Page 28 19” LCD Color Monitor AOC LM960s FB101 JUMPER R114   0603 Q101 L101 Q102 R116 PMBS3904 3.6K   1206 45uH C930 R115 AO4411 0603 1000uF/16V   C929 C107 Q103 1000uF/16V D101 0.1uF/25V PMBS3906 SR24 R113   0805 IC101 R112  ...
  • Page 29: Pcb Layout

    19” LCD Color Monitor AOC LM960s 7. PCB Layout 7.1 Main Board...
  • Page 30 19” LCD Color Monitor AOC LM960s...
  • Page 31 19” LCD Color Monitor AOC LM960s...
  • Page 32: Power Board

    19” LCD Color Monitor AOC LM960s 7.2 Power Board...
  • Page 33 19” LCD Color Monitor AOC LM960s...
  • Page 34: Key Board

    19” LCD Color Monitor AOC LM960s 7.3 Key Board...
  • Page 35: Maintainability

    19” LCD Color Monitor AOC LM960s 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. 8.2 Trouble Shooting 8.2.1 Main Board No power...
  • Page 36 19” LCD Color Monitor AOC LM960s No picture (LED orange) No picture The button if X601 oscillate Replace X601 under control waveform is normal Check reset circuit of Check Correspondent component U601 is normal Measure U201 PIN2=2.5V U202 PIN2=3.3V Replace U601...
  • Page 37 19” LCD Color Monitor AOC LM960s White screen White screen Measure Q204 base X601 oscillate waveform is normal is high level? Replace X601 Check Q204, Q203 are Check reset circuit of broken or CN503 solder? U601 is normal Check Correspondent Check Correspondent component.
  • Page 38 19” LCD Color Monitor AOC LM960s 8.2.2 Power Board No power No Power Measure the voltage of C905 = 290V Check F901, BD901, C905, IC901, Q903 Check power supply for the pin7 of IC901 Lower Hopping 1. Check R906, R907, IC901 Check IC902, IC903 and 2.
  • Page 39 19” LCD Color Monitor AOC LM960s No backlight No backlight Measure the voltage of F201=12V See the “No Power” Replace Q205, Q206, Measure the Measure the Pin5 of Q207 Q207 B = 3V IC201 = 5V Check main board If pin11, pin12, pin19, pin20 of...
  • Page 40 19” LCD Color Monitor AOC LM960s 8.2.3 Key Board OSD is unstable or not working Is Keypad Board connecting normally Connect Keypad Board Is Button Switch Replace Button Switch Is Keypad Board Normally? Replace Keypad Board Check Main Board...
  • Page 41: White-Balance, Luminance Adjustment

    6500 color temp. parameter is x = 313±30, y = 329 ±30, Y ≥180 cd/m 3. Access into factory mode of LM960s Turn on power, 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 42: Monitor Exploded View

    19”LCD Color Monitor AOC LM960s 10. Monitor Exploded View...
  • Page 43: Bom List

    19” LCD Color Monitor AOC LM960s 11. BOM List T982KH4HK4A1NPE Location Part No. Description CBPC6HM4ADH1 MAIN BOARD FOR 19 KEPC980KADECP KEY BOARD PWPC942HE2HK POWER BOARD 11G6036 1 SPACER SUPPORT SCC-24 15G5908 2 BRACKET 15G6207 B 1 PANEL BRACKET 15G6207 L 5...
  • Page 44 19” LCD Color Monitor AOC LM960s 750GLH90E13 23 PANEL 190ME13-A02 HSD AM1G1740 12 47 CR3 SCREW H12G6200 3 RUBBER H44G8928615 4D CARTON H45G 87 1 3H EPE COVER H45G 87 4 H PE BAG FOR BASE/MANUAL H45G 87 4 H...
  • Page 45 19” LCD Color Monitor AOC LM960s Q203 57G 763 1 AO3401L SOT23 BY AOS(A1 RN601 61G 125472 8 RST CHIPR 4.7KOHM +-5% RN602 61G 125472 8 RST CHIPR 4.7KOHM +-5% FB301 61G0603000 RST CHIPR 0 OHM +-5% 1/ FB302 61G0603000...
  • Page 46 19” LCD Color Monitor AOC LM960s R407 61G0603103 RST CHIPR 10KOHM +-5% 1 R601 61G0603103 RST CHIPR 10KOHM +-5% 1 R602 61G0603103 RST CHIPR 10KOHM +-5% 1 R604 61G0603103 RST CHIPR 10KOHM +-5% 1 R605 61G0603103 RST CHIPR 10KOHM +-5% 1...
  • Page 47 19” LCD Color Monitor AOC LM960s C210 65G0603104 32 CHIP 0.1UF 50V X7R C212 65G0603104 32 CHIP 0.1UF 50V X7R C214 65G0603104 32 CHIP 0.1UF 50V X7R C216 65G0603104 32 CHIP 0.1UF 50V X7R C401 65G0603104 32 CHIP 0.1UF 50V X7R...
  • Page 48 19” LCD Color Monitor AOC LM960s C309 65G0603473 32 CHIP 0.047UF 50V X7R C310 65G0603473 32 CHIP 0.047UF 50V X7R C217 65G0603683 32 CHIP 0.068UF 50L X7R C206 65G0805105 22 CHIP 1UF 25V X7R 0805 FB304 71G 56G151 A TB160808G151...
  • Page 49 19” LCD Color Monitor AOC LM960s CN202 33G8021 2D U 3.5mm WAFER CN204 33G8021 2D U 3.5mm WAFER CN205 33G8021 2D U 3.5mm WAFER 40G 45762412B CBPC LABEL 6 4502 IC902 56G 139 3A PC123Y22FZOF NR901 61G 58050 WT RST NTCR 5 OHM 5A...
  • Page 50 19” LCD Color Monitor AOC LM960s CN902 95G8021 12518 WIRE HARNESS 705G 560 61 06 R903 ASS'Y 705G 780 57 51 Q901 ASS'Y 705G 980 87 02 CN901 ASS'Y 705G 980 93 04 D910/D911 ASS'Y IC101 56G 379 37 FP5001DR-LF...
  • Page 51 19” LCD Color Monitor AOC LM960s R239 61G0805102 RST CHIPR 1KOHM +-5% 1/ R922 61G0805102 RST CHIPR 1KOHM +-5% 1/ R924 61G0805102 RST CHIPR 1KOHM +-5% 1/ R928 61G0805102 RST CHIPR 1KOHM +-5% 1/ R203 61G0805103 RST CHIPR 10KOHM +-5% 1...
  • Page 52 19” LCD Color Monitor AOC LM960s R916 61G0805472 RST CHIPR 4.7KOHM +-5% R918 61G0805472 RST CHIPR 4.7KOHM +-5% R108 61G0805473 RST CHIPR 47KOHM +-5% 1 R222 61G0805513 RST CHIPR 51KOHM +-5% 1 R217 61G0805619 2F RST CHIPR 61.9KOHM +-1% R236...
  • Page 53 19” LCD Color Monitor AOC LM960s C243 65G0805104 32 CHIP 0.1U 50V X7R C245 65G0805104 32 CHIP 0.1U 50V X7R C246 65G0805104 32 CHIP 0.1U 50V X7R C247 65G0805104 32 CHIP 0.1U 50V X7R C908 65G0805104 32 CHIP 0.1U 50V X7R...
  • Page 54 19” LCD Color Monitor AOC LM960s D204 93G 6433P BAV99 D206 93G 6433P BAV99 D207 93G 6433P BAV99 D209 93G 6433P BAV99 D210 93G 6433P BAV99 ZD902 93G 39S 17 T RLZ12B LLDS ZD201 93G 39S 24 T RLZ 5.6B LLDS...
  • Page 55 19” LCD Color Monitor AOC LM960s J219 95G 90 23 TINCOATEDCOPPER J220 95G 90 23 TINCOATEDCOPPER J221 95G 90 23 TINCOATEDCOPPER J222 95G 90 23 TINCOATEDCOPPER J223 95G 90 23 TINCOATEDCOPPER J232 95G 90 23 TINCOATEDCOPPER J234 95G 90 23...
  • Page 56 19” LCD Color Monitor AOC LM960s C922 67G 2151007NT ELCAP 10UF +-20% 50V 10 C907 67G 2152207NT ELCAP 22UF +-20% 50V 10 R903 61G152M10458F RST MOFR 100KOHM +-5% 2 96G 29 6 SHRINK TUBE UL/CSA Q901 57G 600 35 STP8NK80ZFP TO-220FP...
  • Page 57: Different Parts List

    19” LCD Color Monitor AOC LM960s 12. Different Parts List Diversity of T982KH4HK4A2NPE compared with T982KH4HK4A1NPE Location Part No. Description 15G6207 L 2 PANEL BRACKET 15G6207 R 2 PANEL BRACKET 750GLH90E1212Z PANEL 19OME12-A02 HSD Diversity of T982KH4HK4A1ZPE compared with T982KH4HK4A1NPE Location Part No.

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