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3-5 CLEANING 

Unplug the power cord from the outlet before cleaning the display.  Use 
only a damp cloth and mild detergent.  Do not use strong liquid cleaner or 
aerosol sprays.  Do not attempt to clean the interior of the unit: this action 
must be performed by the service technician as required during normal 
maintenance. 
 

3-6 SERVICE  

Removal 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 the service technician should any of the 
following occur 
 
(a) 

If liquid has been split into the display. 

(b) 

If the display has been exposed to rain or water. 

(c) 

If the display has been dropped or the cabinet damaged. 

(d) 

If fuses continue to blow. 

(e) 

If the power cord is damaged or frayed. 

(f) 

If a distinct change from normal operation is apparent. 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for VM9AF

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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