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Chapter 3 Service Adjustments
3.11 Software Updating
3-14
top and higher at the bottom, adjust Red vertical pot to correct
the error.
If Red is higher than Green at the top and bottom, or lower than
Green at the top and bottom, this is most likely caused by Red
not being centered correctly and can be corrected with the
centering adjustment (User's Guide, Section 5.5.11).
If the Red height pot does not completely eliminate the
difference in height between Red and Green, balance the error
at the top and bottom. Too much of an error at the top or
bottom makes convergence procedures harder to accomplish.
5. Repeat Steps 2 and 3 above for Blue while hiding Red.
6. Recheck all Geometry and Convergence settings (see User's
Guide) and readjust wherever necessary.
To adjust the horizontal size coils (see Figure 3-7):
1. Continue to use Test Pattern 5, X-hatch.
2. Hide Blue. View Red and Green.
3. If Red is outside of Green on both sides, or inside of Green on
both sides, use a Delrin .100 hex alignment tool to adjust the
Red horizontal size coil to correct the error. If Red is outside of
Green on one side and inside of Green on the other side, this is
most likely caused by Red not being centered correctly and can
be corrected with the centering adjustment (User's Guide,
Section 5.5.11).
If the Red horizontal size coil does not completely eliminate the
size error between Red and Green, balance the error on both
sides to allow for easier convergence.
4. Repeat Steps 2 and 3 above for Blue while hiding Red.
5. Recheck all Geometry and Convergence settings and readjust
wherever necessary.
6. Replace the electronic module and rear cover.
The Model 220 software resides in Flash Memory and is updated
via the projector's serial Port A. To perform an update, a disk
containing the updated Boot Software (boot.hex) and/or System
Software (zsys.hex) and a PC with Windows 3.1 (avoid Windows
95 at this time) is required to perform update.
Boot Manager Software and System Software are separate
products. Each may be updated independently. The System
Software will depend on a specific version of the Boot Manager.
Refer to the System Software release bulletin for Boot Manager
version dependencies.
Model 220 Service Manual
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