Layout and Setup Tips
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The below picture shows the convergence output board and the driver board
The convergence output board is a common failure point, as the HV leads are
right at this board as is the HV splitter when you put the top boards in their
normal operating mode. Any arc of the HV area will arc to the convergence output
board, and damage will result. The + conv fuse will usually blow as a result of
a failure on this board. Note that the older 70X series of sets have a slightly
different layout of this board. Various versions of the convergence output
boards are not interchangeable with each other.
This output board also has the convergence output connectors on them. Pull
these connectors out and flip around 180 degrees if the convergence controls
work opposite of what you expect.
THE convergence driver board does not fail often. When it does, you usually
get an I2R error code on the screen when trying to converge the set. This I2R
error code will isolate which chip is not communicating with the main processor.
(smart Barco engineers!). These chips are surface mount and need special
desoldering tools to take these chips off.
DO NOT adjust the sealed trimpots on the convergence driver board. These
calibrate the convergence waveforms and you’ll have no end of grief with trying
to get the convergence right if you tweak these.