Preparing For Convergence Adjustment - Barco DP2K SLP Series Service Manual

Convergence test pattern
Image 14-2
The test pattern illustrated above is specifically designed for convergence purposes. The test pattern has
three blue arrows numbered from 1 to 3 and three green arrows numbered from 4 to 6. These numbers and
colors correspond to those of the control knobs. Each knob is marked with an arrow which corresponds to the
direction indicated on the screen.
Adjustment Range
Prevent damage to the system by limiting the amount/number of adjustment (s) made. Typically the
convergence adjustments serve to correct a convergence fault of a few pixels at the most. Any convergence
fault beyond this is considered grossly abnormal and likely indicates abuse or rough handling. However, in
extreme cases correction of up to 10 pixels is possible.
CAUTION: The system does have an end of travel in either direction, but using excessive force may
cause damage. Please handle gently.
Troubleshooting 'dead zone' of control knob
In the rare event that a knob is loose in the perfect convergence position, it is preferable to continue translating
the image away for approximately 20 to 30 pixels (max 1 revolution of the knob(s)). Note that this is the only
time we allow for extreme adjustment. Thereafter, return the image back immediately to the correct position.
The knob should now have become tighter in the final position and therefore resists turning due to vibrations
and such. Repeat the procedure if you feel the knob is still loose.

14.2 Preparing for convergence adjustment

Required tools
• 7mm flat screwdriver.
1
4
1
2
5
Convergence
3
6
R5906848 /04 DP2K SLP Series 159