Software Updating - Hughes JVC Model 200 Service Manual

Chapter 3 Service Adjustments

3.11 Software Updating

3-14
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 projector's 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.
To perform software upgrade:
1. Verify that the projector circuit breaker is off. Use a Null Modem
cable to connect a PC to the projector's Serial Port A.
2. Start Windows 3.1.
3. Click on the terminal icon from the Accessories Directory.
4. From the Terminal menu, select Settings-Terminal Emulation
and click on DEC-VT-100(ANSI).
Select OK.
5. Under Settings choose Terminal Preferences.
6. Under Terminal Preferences the following selections are
appropriate; Terminal Modes=Sound, CR->CR/LF=Both off,
Columns=80, Cursor=Block & Blink, Terminal Font=Fixedsys
15, Translation=None, Show Scroll Bars=On, Buffer Lines=100,
Use Function Arrow & Control Keys for Windows=Off. Select
OK.
Model 200 Service Manual