Table of Contents
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17" 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 Adjusting the Picture..................................................7
4.Input/Output Specification.......................................9
4.1.Input Signal Connector.........................................9
4.2.Factory Preset Display Modes.........................10
4.3.Power Supply Requirements...............................11
4.4.Panel Specification.........................................10
5.Block Diagram.........................................................13
5.1.Software Flow Chart...........................................13
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...................................15
6.Schematic......................................................17
6.1.Main Board....................................................17
6.2.Power Board..................................................23
7.PCB Layout.....................................................25
7.1.Main Board.................................................25
7.2.Power Board..........................................28
7.3.Key Board..............................................29
8.Maintainability................................................30
8.1.Equipments and Tools Requirement...............30
8.2.Trouble Shooting..........................................31
9.White-Balance, Luminance adjustment...................36
10.Check List ....................................................37
11.Monitor Exploded View...................................40
12.BOM List........................................................41
SAFETY NOTICE
1
AOC LM760S
Horizontal Frequency
30-80 KHz
Page
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Summary of Contents for AOC LM760S
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Page 1: Table Of Contents
17" LCD Color Monitor AOC LM760S Service Service Service Horizontal Frequency 30-80 KHz TABLE OF CONTENTS Description Page Description Page Table Of Contents..……....……...…..1 5.2 Electrical Block Diagram………………..…..…..15 Revision List.…......………....……..2 6.Schematic…………….......…..17 Important Safety Notice.………….…....……..3 6.1.Main Board............17 1.Monitor Specification......………..4 6.2.Power Board..…….…........23 2.LCD Monitor Description……………………………..5 7.PCB Layout..…………........25... -
Page 2: Revision List
17" LCD Color Monitor AOC LM760S Revision List Revision Date Revision History TPV Model Nov-24-06 First Version Release T780KKNHK4A1NPE... -
Page 3: Important Safety Notice
AOC LM760S 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 LM760S 1. Monitor Specifications Items Descriptions Driving system TFT Color LCD Type CLAA170EA08 Size 43.2cm(17.0") Pixel pitch 0.264mm(H) x 0.264mm(V) LCD Panel Viewable angle 140˚ (H) 130˚ (V) (CR≥10) Response time (type) 12ms Contrast Ratio... -
Page 5: Lcd Monitor Description
17" LCD Color Monitor AOC LM760S 2. LCD Monitor Description The LCD monitor will contain 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
17" LCD Color Monitor AOC LM760S 3. Operating Instructions 3.1 General Instructions Press the power button to turn the monitor on or off. The control buttons are located in the front of the monitor. By changing these settings, the picture can be adjusted to your personal preferences. -
Page 7: Adjusting The Picture
17" LCD Color Monitor AOC LM760S 3.3 Adjusting the Picture Adjustment steps: 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 8 17" LCD Color Monitor AOC LM760S User / Green Gain Digital-register. 0-100 Green User / Blue Blue Gain from Digital-register. 0-100 Auto Adjust the H/V Position, Auto Config Focus and Clock of picture. (Analog-Onl Do not execute Auto Config, y Model) return to main menu.
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Page 9: Input/Output Specification
17" LCD Color Monitor AOC LM760S 4. Input/Output Specification 4.1 Input Signal Connector Pin No. Description Pin No. Description Red Video Green Video Detect Cable Blue Video DDC-Serial Data Ground H-Sync Red Ground V-Sync Green Ground DDC-Serial Clock Blue Ground VGA connector layout 4.2 Factory Preset Display Modes... -
Page 10: Panel Specification
17" LCD Color Monitor AOC LM760S 4.4 Panel Specification 4.4.1 General Features CLAA170EA08 is 17.0” color TFT-LCD (Thin Film Transistor Liquid Crystal Display) module composed of LCD panel, driver ICs, control circuit and backlight. By applying 6 bit digital data, 1280 1024, 26.2M-color images are displayed on the 17.0”... - Page 11 17" LCD Color Monitor AOC LM760S 4.4.2 Optical Characteristics...
- Page 12 17" LCD Color Monitor AOC LM760S 4.4.3 Electrical Characteristics...
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Page 13: Block Diagram
17" LCD Color Monitor AOC LM760S 5. Block Diagram 5.1 Software Flow Chat... - Page 14 17" LCD Color Monitor AOC LM760S 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 15: Electrical Block Diagram
17" LCD Color Monitor AOC LM760S 5.2 Electrical Block Diagram 5.2.1 Main Board Crystal Crystal Panel Interface 14.31818MHZ 20MHZ (CN101, CN102) (X401) (X402) Scalar IC TSU17AK EEPROM (Include ADC, OSD) AT24C16N W78E65P-40 (U403) (U402) (U401) H sync V sync OSD Control... - Page 16 17" LCD Color Monitor AOC LM760S 5.2.2 Inverter/Power Board Bridge Rectifier AC input Transformer Rectifier diodes EMI filter and Filter Start Circuit: R906、R907 CN102 Feedback Over Voltage Control IC Circuit Protect ON/OFF Output MOSFET Transformer Q203、Q204 Circuit Lamp Feedback ON/OFF Control...
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Page 17: Schematic
17" LCD Color Monitor AOC LM760 6. Schematic 6.1 Main Board... - Page 18 17" LCD Color Monitor AOC LM760...
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Page 23: Power Board
17" LCD Color Monitor AOC LM760 6.2 Power Board NR901 R920 C920 1/2W 0.001uF/500V NTCR BD901 T901 F902 2KBP06M D910 31DQ10 FUSE TO INVERTER L903 CN102 R906 R904 C906 R903 C922 C924 C928 FB903 1/4W 1/4W 0.0015uF/2KV 100K ... - Page 24 17" LCD Color Monitor AOC LM760 CN201 C215 22pF/6KV Q203 L201 +12V D201 R224 R225 R226 R227 C201 C223 R212 D203 1.5K 1.5K 1.5K 1/4W 1.5K 1/4W SR24 150uF/25V 150uF/25V C202 C225 3.9K RLZ11B C216 Q202 1uF/25V R214...
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Page 25: Pcb Layout
17" LCD Color Monitor AOC LM760S 7. PCB Layout 7.1 Main Board... - Page 26 17" LCD Color Monitor AOC LM760S...
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Page 28: Power Board
17" LCD Color Monitor AOC LM760S 7.2 Power Board... -
Page 29: Key Board
17" LCD Color Monitor AOC LM760S 7.3 Key Board... -
Page 30: Maintainability
17" LCD Color Monitor AOC LM760S 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 31 17" LCD Color Monitor AOC LM760S No Picture (LED orange) No picture The button if under X402 oscillate Replace X402 control waveform is normal Check Correspondent Check reset circuit of component U402 is normal Measure U701 PIN2=1.8V U702 PIN2=3.3V Replace U402...
- Page 32 17" LCD Color Monitor AOC LM760S White Screen White screen Measure Q704 base is X402 oscillate high level? Measure waveform is normal C104 + =12V Replace X402 Check Q704, Q703 are Check reset circuit of broken or CN101 solder? U402 is normal...
- Page 33 17" LCD Color Monitor AOC LM760S 8.2.2 Key Board OSD is unstable or not working Is Keypad Board connecting Connect Keypad Board normally? Is Button Switch normally? Replace Button Switch Is Keypad Board Normally? Replace Keypad Board Check Main Board...
- Page 34 17" LCD Color Monitor AOC LM760S 8.2.3 Power Board Check to CN102 pin12 = 12V Check Interface board Check AC line volt 120V or 220V Check the voltage of C905(+) Change F901; check BD901, Q903, and IC901 Check start voltage for the pin3 of IC901...
- Page 35 17" LCD Color Monitor AOC LM760S W / LED, No Backlight Check CN102 pin12 =12V Check adapter or MB Check ON/OFF signal Check Interface board Check U201 pin9=12V Change Q201 or Q202 Check the pin1 of U201 have saw tooth wave Change U201 Check D201/D202 (-) have the output of square wave at short time.
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Page 36: White-Balance, Luminance Adjustment
6500K color temp. parameter is x = 313±20, y = 329 ±20, Y =180 cd/m 3. Into factory mode of LM760S 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 37: Check List
6500 K: (warm color) x = 313±20; y = 329±20; 7800 K: (cool color) x = 296±20; y = 311±20; Remark: The value of Y should be confirmed according to different customers. If Customer is AOC so that it’s required to be larger than 170cd/cm (Center). - Page 38 2. Seek the document with the expanded name of .BAT in DDC file of this model. It appears the indication of “Input Serial No.：”after dual-click the document to be ready for DDC-writing. 3. Input the serial number of the product (For instance: AOC LM729 is 13 bits), then press ENTER to start writing 4.Check the indication of DDC-writing program at the end.
- Page 39 17" LCD Color Monitor AOC LM760S check the power resource and the connection of the signal cable, then return to step 3 by pressing ENTER and re-do it. 5.You can exit the program by pressing Ctrl plus C, then cut the signal cable and the power.
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Page 40: Monitor Exploded View
17" LCD Color Monitor AOC LM760S 11. Monitor Exploded View... -
Page 41: Bom List
17" LCD Color Monitor AOC LM760S 12. BOM List T780KC4HK4A1NE Location Part No. Description CBPC782KC4E9 CONVERSION BOARD KEPC782KDAP KEY BOARD PWPC1742CPE1 POWER BOARD 15G5908 3 BRACKET 15G6208 L 1 PANEL-BKT-L 15G6208 R 1 PANEL-BKT-R 26G 800504 7 BARCODE 40G 17N615 4A... - Page 42 17" LCD Color Monitor AOC LM760S 705L780KF34 17 BEZEL ASS'Y 750GLC70A08 21 CPT 17"020 PANEL H41G700N61595C MANUAL H45G 87 1 2H PE BAG FOR MONITOR H45G 87 4 H PE BAG FOR BASE/MANUAL H45G 87 4 H PE BAG FOR BASE/MANUAL...
- Page 43 17" LCD Color Monitor AOC LM760S FB412 61L0603000 RST SM 0603 JUMP MAX 0R R102 61L0603000 RST SM 0603 JUMP MAX 0R R103 61L0603000 RST SM 0603 JUMP MAX 0R R104 61L0603000 RST SM 0603 JUMP MAX 0R R105 61L0603000...
- Page 44 17" LCD Color Monitor AOC LM760S R713 61L0603103 CHIPR 10K OHM +-5% 1/16 R714 61L0603103 CHIPR 10K OHM +-5% 1/16 R720 61L0603104 CHIPR 100K OHM +-5% 1/1 R722 61L0603104 CHIPR 100K OHM +-5% 1/1 R434 61L0603121 CHIPR 120 OHM 1/16W...
- Page 45 17" LCD Color Monitor AOC LM760S C443 65G0603102 31 CHIP 1000PF 50V NPO C445 65G0603102 31 CHIP 1000PF 50V NPO C446 65G0603102 31 CHIP 1000PF 50V NPO C450 65G0603102 32 1000PF +-10% 50V X7R C437 65G0603104 12 0.1UF +-10% 16V X7R...
- Page 46 17" LCD Color Monitor AOC LM760S C717 65G0603104 32 CHIP 0.1UF 50V X7R C718 65G0603104 32 CHIP 0.1UF 50V X7R C401 65G0603220 31 CHIP 22PF 50V NPO C425 65G0603220 31 CHIP 22PF 50V NPO C430 65G0603220 31 CHIP 22PF 50V NPO...
- Page 47 17" LCD Color Monitor AOC LM760S SW001 77G 600 1GCJ TACT SWITCH TSPB-2 SW002 77G 600 1GCJ TACT SWITCH TSPB-2 SW003 77G 600 1GCJ TACT SWITCH TSPB-2 SW004 77G 600 1GCJ TACT SWITCH TSPB-2 SW005 77G 600 1GCJ TACT SWITCH TSPB-2...
- Page 48 17" LCD Color Monitor AOC LM760S C201 67G215V471 3N 470UF/16V C223 67G215V471 3N 470UF/16V C924 67G215V471 3N 470UF/16V C926 67G215V471 3N 470UF/16V C905 67G305S10114H 100UF +-20% 400V L903 73G 253 91 H CHOKE COIL L904 73G 253 91 H CHOKE COIL...
- Page 49 17" LCD Color Monitor AOC LM760S R918 61L1206103 CHIP 10KOHM 5% 1/8W R916 61L1206104 CHIP 100KOHM 5% 1/4W R901 61L1206105 CHIP 1MOHM 5% 1/8W R902 61L1206105 CHIP 1MOHM 5% 1/8W R224 61L1206152 CHIPR 1.5K OHM+-5%1/4W R225 61L1206152 CHIPR 1.5K OHM+-5%1/4W...
- Page 50 17" LCD Color Monitor AOC LM760S T901 6G 31502 1.5MM RIVET 715G1103 3 17 FB903 95G 90 23 TINCOATEDCOPPER R243 61G 17210252T 1K OHM 5% 1/4W R244 61G 17210252T 1K OHM 5% 1/4W R912 61G 17210252T 1K OHM 5% 1/4W...
- Page 51 17" LCD Color Monitor AOC LM760S D902 93G 6038P52T PS102R D205 93G 64 1152T 1N4148 DO-35 D206 93G 64 1152T 1N4148 DO-35 D207 93G 64 1152T 1N4148 DO-35 D208 93G 64 1152T 1N4148 DO-35 D209 93G 64 1152T 1N4148 DO-35...
- Page 52 17" LCD Color Monitor AOC LM760S 34G1547 GM B BASE 37G6033 2 HINGE Q1G 140 8128 CR3 SCREW Q1G1040 10128 CR3 SCREW H34G0041 GM14B REAR COVER 2F0605100 SCREW NUTS M6.0*P1.0...