Tatung VM9AF, Service Manual

Page 1: ...1 VM 9AF SERVICE MANUAL...

Page 2: ...2 CONTENTS 1 SPECIFICATION 2 OPERATING INSTRUCTIONS 3 IMPORTANT SAFEGUARDS 4 ADJUSTMENT PROCEDURE 5 BLOCK DIAGRAM 6 SERVICE NOTES 7 CIRCUIT DIAGRAM 8 LAYOUT DIAGRAM 9 EXPLODED DRAWING 10 PARTS LIST...

Page 3: ...UTION 640X480 800X600 1024X768 BANDWIDTH 26MHZ 35MHZ 45MHZ VIDEO SIGNAL R G B INPUT 1V p p MAX SYNC INPUT TYPE H SYNC V SYNC TTL INPUT CONNECTOR 15PIN D SHELL USER CONTROL BRI CON POWER SW V LINE H PH...

Page 4: ...and counter clock wise to decrease it 2 4 CONTRAST CONTROL Turn the contrast control clock wise to increase the contrast and counter clock wise to decrease it 2 5 HORIZONTAL PHASE CONTROL Turning the...

Page 5: ...cked or covered Do not place the display near or over a radiator or heating vent If this unit is installed within another enclosure be sure that adequate ventilation has been provided Never push objec...

Page 6: ...l of the back by an unauthorised person may expose the user to dangerous voltage or other hazards Refer all servicing to qualified service personnel Unplug the display from the power outlet and notify...

Page 7: ...ce between top centre and bottom centre 4 3 Horizontal hold adjustment a test pattern cross hatch b set up external brightness and contrast VR to central position c turn off horizontal sync pin to gro...

Page 8: ...frequency value to 52Hz 4 9 Raster adjustment a disconnect video signal b set up external brightness VR to maximum external contrast VR to maximum c Adjust VR403 to have luminance equal to 0 5 1 0 FL...

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