Service Manual
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..., either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any form or by ViewSonic Corporation. Revision History Revision 1.0 Date 4/6/01 Description Of Changes Initial Issue - Sears ii VA550 Service Manual Further, ViewSonic reserves the right to notify any person of such revision or...
..., either expressed or implied, with respect to the contents hereof and specifically disclaims any warranty of merchantability or fitness for any form or by ViewSonic Corporation. Revision History Revision 1.0 Date 4/6/01 Description Of Changes Initial Issue - Sears ii VA550 Service Manual Further, ViewSonic reserves the right to notify any person of such revision or...
Service Manual
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TABLE OF CONTENTS PRECAUTIONS AND SAFETY NOTICES FEATURES SPECIFICATIONS ON SCREEN DISPLAY FACTORY PRESET TIMINGS PIN ASSIGNMENTS BLOCK DIAGRAM MAIN BOARD I/O CONNECTIONS THEORY OF OPERATION WAVEFORMS TROUBLESHOOTING GUIDE SPARE PARTS LIST COMPLETE PARTS LIST SCHEMATIC DIAGRAMS EXPLODED VIEW AND PARTS LIST DIMENSION DRAWING 2 3 4 5 6 7 8 9-12 11-31 32-39 40-42 4344 45-60 61 62 63 iii VA550 Service Manual
TABLE OF CONTENTS PRECAUTIONS AND SAFETY NOTICES FEATURES SPECIFICATIONS ON SCREEN DISPLAY FACTORY PRESET TIMINGS PIN ASSIGNMENTS BLOCK DIAGRAM MAIN BOARD I/O CONNECTIONS THEORY OF OPERATION WAVEFORMS TROUBLESHOOTING GUIDE SPARE PARTS LIST COMPLETE PARTS LIST SCHEMATIC DIAGRAMS EXPLODED VIEW AND PARTS LIST DIMENSION DRAWING 2 3 4 5 6 7 8 9-12 11-31 32-39 40-42 4344 45-60 61 62 63 iii VA550 Service Manual
Service Manual
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DO NOT COPY Service Manual VA550 SPECIFICATIONS ViewSonic Corporation Characteristic LCD Panel Maximum Viewing Angles Signal Input Connector Maximum Resolution Video Bandwidth Display Area Power Voltage Power Consumption Operating Conditions Storage Conditions Dimensions Weight Description ADI, 15.0 inch diagonal viewable screen, Anti-glare TFT Active Matrix Panel, 0.297 mm pixel pitch, TDK Inverter Left : 60° Right...
DO NOT COPY Service Manual VA550 SPECIFICATIONS ViewSonic Corporation Characteristic LCD Panel Maximum Viewing Angles Signal Input Connector Maximum Resolution Video Bandwidth Display Area Power Voltage Power Consumption Operating Conditions Storage Conditions Dimensions Weight Description ADI, 15.0 inch diagonal viewable screen, Anti-glare TFT Active Matrix Panel, 0.297 mm pixel pitch, TDK Inverter Left : 60° Right...
Service Manual
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...Check W05 (VDD, VEE, and Con.) Check the video amplifier (IC31) output R,G,B is normal Check IC31 clamping signal (pin19) input signal (pin2, 6, 11) and Vcc ViewSonic Corporation heck the A/ convertor (IC08) is lighted ? Check IC03 (pin4, 5, 12) Check W07 is OK? Check the VLCD, ► GND, H-sync, V-sync, DCLK...Page 40 CONFIDENTIAL- Power Saving 1 N Check if the power is OK L 1 Check the video cable Y and check if the Hsync or V-sync is over specifications I CKL and pin 21,20 (CLK+, CLK-) Check the PLL1 (IC03) is turned on ? Check the Vcc input video level (pin85,88,91) and ...
...Check W05 (VDD, VEE, and Con.) Check the video amplifier (IC31) output R,G,B is normal Check IC31 clamping signal (pin19) input signal (pin2, 6, 11) and Vcc ViewSonic Corporation heck the A/ convertor (IC08) is lighted ? Check IC03 (pin4, 5, 12) Check W07 is OK? Check the VLCD, ► GND, H-sync, V-sync, DCLK...Page 40 CONFIDENTIAL- Power Saving 1 N Check if the power is OK L 1 Check the video cable Y and check if the Hsync or V-sync is over specifications I CKL and pin 21,20 (CLK+, CLK-) Check the PLL1 (IC03) is turned on ? Check the Vcc input video level (pin85,88,91) and ...