Programacion

Acer V551 (new) CRT Monitor Service Guide Chapter 3 Alignment Procedure
Table of Contents 0. Preparation for Alignment............................................................................................................. 2 1. B+ Adjustment (For function test station only) ............................................................................ 2 2. Geometry Adjustment................................................................................................................... 2 3. Background Adjustment................................................................................................................ 3 4. Foreground Adjustment ................................................................................................................ 3 5. Final Check................................................................................................................................... 3 6. Focus Adjustment ......................................................................................................................... 4 7. Convergence Adjustment.............................................................................................................. 4 8. Power Saving Function Check ...................................................................................................... 4 9. Geometry Specification for Production Line ................................................................................ 5 10. Eyeletparts.................................................................................................................................. 5 11. Touch-up parts ............................................................................................................................ 7 12. Glue parts .................................................................................................................................... 8 13. Wire Dressingparts..................................................................................................................... 9








 








1 Confidence and Property

Acer V551 (new) CRT Monitor Service Guide Chapter 3 Alignment Procedure 0. Preparation for Alignment
a. b. c. Pre-set all VRs to the center position except R/G/B bias VR101, 102, 103 counterclockwise to maximum. Set up unit and keep it warm up at least 15minutes. Preset mode IBM VGA 640X480 31.5KHz/60Hz IBM VGA 640X400 31.5KHz/70Hz 6448A 640X480 37.5KHz/75Hz SVGA4 800X600 46.88KHz/75Hz SVGA3 800X600 48.09KHz/72Hz SVGA5 800X600 53.6KHz/85Hz

1. B+ Adjustment : (For function test station only)

a.

Enter factory area -- Press "SELECT +" and "ADJUST-" at the same time then turn power switch on. b. Press "ADJUST +" and "ADJUST -" at the same timeto clear user area. c. Input mode 31.5KHz (VGA 640x480) with tilt adjustment pattern. d. Adjust CRT screw to meet tilt and orthogonal spec. ( Tilt < ±1 mm , Orthogonal < ±1.5mm ) e. f. g. Input the presetting modes and supporting modes with full white pattern. Set external contrast to maximum and brightness to raster just cut-off position. Press "SELECT +" or "SELECT -" to select the adjustmentfor H-size, H-phase, V-size, V-center, Pincushion or Trapezoid. h. Press "ADJUST +" or "ADJUST -" to make the geometry can meet item 9 table 2 spec. i. Press "SELECT +" and "ADJUST -" at the same time to save the adjustment data. j. Change timing to next mode and repeat step f, g and h. k. After all modes are adjusted OK, turn power switch off.








2. Geometry Adjustment

 

a. b. c.

Input mode 53.6KHz (SVGA5) with cross hatch pattern. Press "SELECT +" and "ADJUST -" keys at a same time. Adjust switching power supply VR601 to make the horizontal B+ to be 50.0 +/- 0.2VDC.






2 Confidence and Property

Acer V551 (new) CRT Monitor Service Guide Chapter 3 Alignment Procedure 3. Background Adjustment
a. Enter factory area -- Press "SELECT +" and...