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AOC 196V SERVICE MANUAL 19” LCD Monitor 196V THESE DOCUMENTS ARE FOR REPAIR SERVICE INFORMATION ONLY. EVERY REASONABLE EFFORT HAS BEEN MADE TO ENSURE THE ACCURACY OF THIS MANUAL; WE CANNOT GUARANTEE THE ACCURACY OF THIS INFORMATION AFTER THE DATE OF PUBLICATION AND DISCLAIMS RELIABILITY FOR...
AOC 196V 1.MONITOR SPECIFICATIONS Driving system TFT Color LCD Size 48.0cm(19.0") LCD Panel Pixel pitch 0.294mm( H )x 0.294mm( V ) Viewable angle 140˚ (H) 130˚ (V) (CR>10) Response time (type) 8 ms for HSD panel Sync. Type H/V TTL...
AOC 196V 2. LCD MONITOR DESCRIPTION The LCD MONITOR will contain a main board, a power board, a keypad board and an audio 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.
AOC 196V 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.
AOC 196V 3.3 ADJUSTING THE PICTURE Adjustment steps: 1. Press the MENU-button to activate the OSD window. 2. Press < or > to select the desired function. 3. Press the MENU-button to select the function that you want to adjust.
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AOC 196V User / Blue Blue Gain from Digital-register. Auto Adjust the H/V Position, Focus Auto Config and Clock of picture. (Analog-Only Do not execute Auto Config, return Model) to main menu. Adjust the horizontal position of the H. Position OSD.
AOC 196V 4. Input/Output Specification 4.1 Input Signal Connector 1 D-SUB connector PIN NO. DESCRIPTION PI N NO. DESCRIPTION Red Video No Pin! Green Video Logic Ground Blue Video Monitor Ground Monitor Ground DDC-Serial Data DDC-Return H-Sync Red Ground V-Sync...
AOC 196V 4.3 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 < 55A peak at 240 VAC and cold starting Leakage current <...
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AOC 176V 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. 7) Are the AUTO and SELECT keys pressed? 8) Enter factory mode.
AOC 176V 5.3.2 Inverter/Power Board AC input Bridge Rectifier Transformer Rectifier diode EMI filter and Filter Start Circuit: R906、 R907 CN902 Feedback Over Voltage Control IC Circuit Protect ON/OFF OSC and DC Convert MOSFET Output Circuit Circuit Lamp Over ON/OFF...
AOC 176V 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 31 of 54...
AOC 176V 8.2 Trouble Shooting 8.2.1 Main Board 1. NO SCREEN APPEAR Measured CN201 pin5/6 = 12V? Check Correspondent component. Measured CN201 pin 9/10= 5V? Is there any shortage or cold solder? Measured U202 pin 2= 3.3V? Yes, all DC level exist Yes.
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AOC 176V 2. PANEL POWER CIRCUIT Check R207 should have response from 0V to 5V Measured X601 waveform is normal? When we switch the power switch from off to on Replace X601 (20MHz) Check Q204, Q203 is broken or CN503 solder abnormal?
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AOC 176V 4. U4-DATA OUTPUT Measured X401 waveform Replace X401(14.318MHz) normal? Check MST8011 (U401) Check relative circuit to panel Signal output (PIN102-103, 106-113,118-125,128,1) Is the waveform ok? Check relative component Check HS/VS input signal are normal? Replace U401 Page 34 of 54...
AOC 176V 8.2.2 Power/Inverter Board No power Check CN902 pin2, 4 = 12V Check AC line volt 110V or 220V Check AC input Check the voltage of C905(+) Check bridge rectified circuit and F901 circut Check start voltage for the pin3 of IC901...
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AOC 176V 2.) W / LED, No Backlight Check C201 (+) =12V Change F902 Check ON/OFF signal Check main board Check U201 pin9=12V Change Q201 or Q202 Check the pin1 of U201 have sawtooth wave Change U201 Check D201/D202 have the output of square ware at short time...
AOC 176V 8.2.3 Keypad 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? Check Main Board...
6500 color temp. parameter is x = 313±20, y = 329 ±20, Y =180 cd/m 3. Into factory mode of 196V 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.
AOC 176V 11. BOM List T980KH2HD4A1A Location Part NO. for TPV Description Quantity Unit AUPC980KA1 AUDIO BOARD FOR T980* CBPC980KH2A2 CONVERSION BOARD KEPC980KADE1 KEY BOARD PWPC1942HSE5C POWER BOARD 15G6207 L 3 PANEL BRACKET 15G6207 R 3 PANEL BRACKET 44G3231 15600...
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AOC 176V AM1G1740 12128 SCREW 705L980KB34143 15G6206 1 HINGE BRACKET 34G6202 Y 1B REAR COVER Q1G 140 8128 SCREW 705L980KF34011 33G6288 Y L FUNC TINO 33G6289 1 LENS 34G6201 Y 1B BEZEL Q1G1030 8128 SCREW 705L980KP34017 12G 394 3 RUBBER FOOT...
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