Section 3: Service Setups
D4K25 Service Manual
3-7
020-100880-01 Rev. 1 (06-2012)
3.4.1 Before Performing Convergence
• Tap
Menu
>
Service Setup
>
Digital Convergence
>
Default
to reset the red, green, and blue digital micro-
mirror device (DMD) values to their default settings.
• Ensure image-zoom and centering is complete before performing convergence.
For details, see
3.2 Integrator Alignment, on page 3-2
• Ensure boresight procedures have been completed before performing convergence.
For details, see
the
D4K25 User Manual (P/N: 020-100882-XX)
.
• Use only a prime lens when performing convergence. DO NOT use an anamorphic or Wide Converter Lens
(WCL) lens.
• The projector should be set up to final maximum usable brightness for the installed application.
• 14FL for Standard 2D
• ~25-30FL for Single Projector 3D with a silver screen
• 25FL per projector for Dual Projector 3D
• Once at the required power setting, the unit should be allowed to come “up to temperature” for at least 15
minutes. Note this nominal operating temperature for monitoring as you perform convergence.
• During convergence, the lid and/or filter side of the projector will be open, causing decreased prism cooling
performance and possible shifts in convergence or DMD focus. The prism temperature should be monitored
during the adjustment and kept within a few degrees of the nominal temperature achieved above by lowering
the lamp power or periodically replacing the cover for a cool-down.
• If the procedure takes longer than an hour, watch for over-temperature alerts when running near 6000W.
Cool-down periods with the shutter closed and cover on may be required.
• The active screen file should be
4096 x 2160 no crop
to prevent any scaling of your reference test pattern.
• Use insulated tools to prevent short circuits (
):
• 2.5 mm driver with heat-shrink tubing (2.0 inch and 6.5 inch lengths).
Figure 3-6 Convergence Tools
• Typically the blue image component can be used as the fixed reference, so no adjustment is required. How-
ever, if you need to adjust the blue image component it is easy to adjust, but the side panel must be removed.
The recommended normal convergence adjustments are from green to blue and red to green.
• It is recommended that the vertical and rotation adjustment be done first, as they work dependently together
and the horizontal adjustment done last.
• Use extreme caution to not damage any components on the board.
• DO NOT force the adjustment, there is no reason the board should not move easily with gentle pressure.
