Hughes JVC Projector 250 Sc Service Manual

Chapter 8---Software and Protocol
8-4 Model 250 Service Manual
 Boot Manager Ver y.y.0 (Service Mode Startup)
Copyright (c) 1994-1996 Hughes-JVC
Technology
 Command: _
12A. To update the System Software from the Boot Manager prompt:
 12B.  Type in the command “loadsys” at the prompt. The following should be
displayed:
 Command: loadsys
 System software update procedure
***WARNING: IMPROPER USE MAY MAKE THIS
SYSTEM  UNBOOTABLE*** (NOTE: This warning
relates to the Flash  Memory updating that occurs
in...

Chapter 8---Software and Protocol
Model 250 Service Manual 8-5
The software update is complete. To restart the projector, type in the “sys” or
“reboot” command and press Enter. The projector will now restart with the
updated System Software.
8.2 Importing/Exporting
Configuration
Data Export / Import Procedure - Rev 1.0.0
This appendix defines the steps to perform a Configuration Data Export & Import
from the Model 250 projector to a Host Computer. The Host Computer can be any
system that has RS232...

Chapter 8---Software and Protocol
8-6 Model 250 Service Manual
Exporting
1. Make sure the Windows TERMINAL program is configured for
SOFTWARE FLOW CONTROL (XON/XOFF). A corrupt Export file
will result if SW flow control is not used.
2. Choose the directory and filename for saving the Export Data. The
Windows TERMINAL: Transfers: Receive Text File... dialog box will
default to the c:\windows directory and no file.   Create a directory (like
\TEMP) (or have an existing one in mind) before starting the...

Chapter 8---Software and Protocol
Model 250 Service Manual 8-7
 
. END
A similar message is displayed on the projector screen :
 
=================================
 
|     Export Configuration      |
 
| EXPORT COMPLETE               |
 
| -> STOP Host Download         |
 
| -> THEN Press ESC             |
 
=================================
 
10. Windows TERMINAL:
Select the Windows TERMINAL STOP button with the mouse to end the
Receive Text File... transfer.
11. Model 250 Menu:
Press Esc
 to exit the...

Chapter 8---Software and Protocol
8-8 Model 250 Service Manual
 
|     Import Configuration       |
 
|  Start SEND TEXT Upload from   |
 
|  Host on Serial PORT A         |
 
|  -To Abort:                    |
 
|  ->Stop Host Upload,           |
 
|  ->THEN Press 
ESC to Abort     |
 
=================================
6. Windows TERMINAL:  Transfers + Send Text File....
6.1  Directories - set directory to desired upload directory (C:\TEMP)
6.2  File Name: - Type desired File Name (for example:...

Chapter 8---Software and Protocol
Model 250 Service Manual 8-9
 
 
FINALLY, press ESC to exit the projector Import operation and return to
the Maintenance Menu. There is
 a 10 second pause before the screen is redrawn.
 
9. DATA TRANSFER ERROR (Example)
Model 250 Menu will display:
 
 
=================================
 
|     Import Failed
             |
 
|  Bad EXPORT File Format       |
 
|   Old Data was Restored.      |
 
| -> STOP Host SEND DATA,       |
 
| -> THEN Press ESC             |...

Chapter 8---Software and Protocol
8-10 Model 250 Service Manual
8.3  Terminals and Communication Protocols
Terminals
The projector can be controlled by a VT-100 terminal. If a VT-100 is not
available, a PC with Windows 3.1 or ProComm for DOS can emulate a VT-100.
Table 8-1 shows the equivalent commands for the terminal and both remotes.
1. From Windows Program Manager, select TERMINAL then SETTINGS.
2. Select TERMINAL EMULATION from SETTINGS menu.
3. Select DEC VT-100 (ANSI) (may already be selected).
4....

Chapter 8---Software and Protocol
Model 250 Service Manual 8-11
Communications Protocol
Select SETTINGS using the menu bar, then select COMMUNICATIONS. Set the
following communications parameters and modes.
Table 8-2  
Communications settings
Baud Rate 9600 Stop Bits 1
Data Bits 8 Flow Control Xon/Xoff
Parity None Carrier Detect No
Parity Check No
Connector Com1-This is PC
configuration
dependent.
Select FILE from the menu bar and select NEW. Under File Name enter VT-
100.TRM. This will allow the user to...

Chapter 8---Software and Protocol
8-12 Model 250 Service Manual
Center, H & V
(RGB)P POS 80 50
Change channel Number +
EnterChannel # +
EnterChannel # +
Enter48-57 30-39 +
0D
Color Y COLOR COLOR 89 59
Contrast (RGB) C CONT CONT 67 43
Edge, H & V
(RGB)E EDGE 69 45
Enter Enter ENTER ENTER 13 0D
Escape Esc ESC ESC 27 1B
Hide F HIDE HIDE 70 46
Keystone, H &
VK KEY 75 4B
Lens adjust A LENS + Arrows 65 41
Linearity, H
&V (RGB)L LIN 76 4C
Menu Spacebar MENU MENU 32 20
Mode M MODE MODE 77 4D
Numeric 0-9 0-9 0-9...

Chapter 8---Software and Protocol
Model 250 Service Manual 8-13
*The Arrow keys are a sequence of Decimal or Hex numbers representing the
sequence of Escape, Left Bracket, and A, B, C, or D depending on which arrow Is
pressed. The first number represents the Escape key, the second number
represents the Left Bracket, and the third number represents the letter
corresponding to the Arrow Key pressed.
**Refer to Section 8.1, Software Updating.
***Must be done for a software change or port configuration...