Hughes JVC Projector 250 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 Step 12D below. Do not  turn projector power
off while the Flash Memory is  updating.)
 Memory buffer reset to Oxff
 Begin your S-Record upload now (Esc to abort)
12C.  Select “Transfers/Send Text File” from the Windows Terminal Menu
(normally in Accessories window). In the “Send Text File Dialog” box,
select “List Files of Type: All Files” and select the disk and/or directory
with the Model 250 software. Select file named “zsys.hex”. Press OK to
start upload. Uploading takes about 20 minutes (9600 bps)
12D.  During upload, a progress indicator updates the number of records
received. When the upload is complete, the system will display the
following (numerical values are for example only and depend on the
System Software version):
 S-Records processed:11282
Upload Successful
Address Range: 0x00020000-0x000781cf
Bytes Loaded:360912
 ***WARNING: FLASH WILL NOW BE UPDATED***
 Press Enter to continue, Esc to abort
12E.  At this point the system has verified that the load module is correct and
is ready to update the Flash memory. Press Enter to perform the update
(Esc will abort the update process with no changes). While the Flash is
being updated (approx. 15-30 seconds), DO NOT turn off the projector
circuit breaker, this may make the machine unbootable, requiring a new
set of flash chips to be installed. When the update is complete, the system
will display the following:
 Reprogramming Flash Sector 2 3 4 5 6 7 8 9
 System software update successful
 Command: _ 
						

							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 download and upload capability, including an IBM-PC
compatible, an Apple MacIntosh, or a UNIX system. This paper describes the
procedures for an IBM-PC running the Windows 3.1 OS. We will use the
Windows “TERMINAL” application for communication with the projector. Other
Terminal emulation programs can be used (ProComm with Windows 95/98), but
all testing has been done with the TERMINAL application.
Note 1
:  The TERMINAL application setup is the same as for controlling the
projector via an ANSI TERMINAL (see section 8-3 Terminals and Protocol).
Note 2:
  Export/Import can be performed on either Port A or Port B.  The Port
must be configured for ANSI Terminal. Port A speed is determined by DIP
SWITCH #4 on the System Controller board.  UP is 9600 baud, DOWN is 19200
Baud.  Port B can be configured for 2400, 9600 (default), or 19200 through the
Comm Setup Menu.  If both Port A and Port B are ANSI Terminals, PORT A
must be used for Export/Import, so to use Port B, set Port A Device = None or
Switcher, Port B Device = ANSI.
Remember to Power Off (Control+P) and HW RESET (Push RESET button -
figure 5-1 in Service Manual- or Circuit Breaker-on rear panel) after changing any
configuration parameters.
  CAUTION!  If you use 19200 Baud, your computer must
have a 16550 UART installed on the Comm Port. An unbuffered  8550
UART will lose data during EXPORT. This data loss cannot be detected
until a later IMPORT is attempted. Use 9600 if you are not sure. In all
cases use  SOFTWARE FLOW CONTROL (XON/XOFF).
  CAUTION!  Laptop computer users must disable Advance
Power Management (APM) during an Export. APM power pulling causes
loss of data. 
						

							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 export
process.
3. Model 250 Menu:   7. System + 5. Maintenance + 5. Export
 
=================================
 
|     Export Configuration      |
 
| Start RECEIVE TEXT Download   |
 
| to Host on Serial PORT A      |
 
|                               |
 
|       to Continue
      |
 
|       < ESC> to Cancel
        |
 
=================================
 
4. Windows TERMINAL:  Transfers + Receive Text File....
5. Directories - set directory to desired download directory (C:\TEMP)
6. File Name: - Type desired File Name (for example:  export1.txt)
7. Select OK with mouse or press Enter key (dialog will be removed)
8. Verify TERMINAL screen shows status line at bottom:
Stop,  Pause, Bytes: 0,  Receiving: EXPORT1.TXT
9. Model 250 Menu:
Press ENTER
 key to start export download. NOTE: Some VT100
Emulator programs (ProComm) will send the ENTER automatically when
step 4.3 above is performed. Expect 10 minutes to export 20 sources
(500,000 bytes) at 9600 baud).
Data Transfer will begin and continue until all source, channel, channel-
source combination, and system data has been exported.  The following
dialog is displayed on the projector screen during the transfer.
 
=================================
 
|     Export Configuration      |
 
|  EXPORT IN PROGRESS ... wait  |
 
| - Press ESC to Abort          |
 
=================================
The following message is sent at the end of the export data.
 
##########################
 
# Export Complete        #
 
# STOP Host Download Now #
 
# Then, Press ESC        #
 
########################## 
						

							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 projector Export operation and return to the
Maintenance Menu.
Importing
1. Know the directory and filename for uploading  the Import Data.  The
Windows TERMINAL: Transfers: Send Text File... dialog box will
default to the C:\windows directory which contains several *.txt files -
SETUP.TXT is NOT a Projector EXPORT file!
 
2. Import will alter all projector setup data.  Prior to starting, several
warnings are displayed to prevent unintentional loss of setup data.
 
3. Model 250 Menu:   7. System + 5. Maintenance + 6. Import
 
=================================
 
|           WARNING
           
 
|  Importing New Configuration  |
 
|  ALL SETUP DATA WILL BE
|  CHANGED!                     |
 
|                               |
 
|       to Continue
      |
 
|       < ESC> to Cancel
        |
 
=================================
 
4. Press ENTER to continue with the Import.
 
=================================
 
|     Import Configuration       |
 
|  Old Configuration will be     |
 
|  restored if import is Aborted |
 
|                                |
 
|       to Continue
       |
 
|       < ESC> to Cancel
         |
 
=================================
5. Press ENTER to continue with the Import.
 
================================= 
						

							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: import1.txt)
6.3  Select OK with mouse or press Enter key (upload begins)
6.4  Verify TERMINAL screen shows status line at bottom:
       Stop,  Pause, “% complete bar”, Sending: EXPORT1.TXT
6.5  Data transfer will continue until complete or an error occurs or the
User Aborts: Expect 10 minutes to import 20 sources (500,000 bytes)
at 9600 baud.
 6.6  At successful end, TERMINAL will remove the bottom line.
 
7. Model 250 Menu:
When the projector detects the successful end of the transfer the following
screen is displayed:
 
=================================
 
|     Import Configuration      |
 
|  IMPORT COMPLETE              |
 
|  New Configuration is active  |
 
|                               |
 
| - Press ESC to Continue       |
 
=================================
 
 
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.
 
8. USER ABORT:
Windows TERMINAL: FIRST press STOP to end the Host Upload
transfer.
Model 250 Menu: THEN press ESC to abort the projector Import
operation.
 
 
=================================
 
|     Import Failed
             |
 
|  IMPORT ABORTED BY USER       |
 
|    Old Data was Restored.     |
 
| - STOP Host SEND DATA,        |
 
|   THEN Press ESC              |
 
================================= 
						

							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             |
 
=================================
 
9.1  Windows TERMINAL: FIRST press STOP to end the Host Upload
transfer.
9.2  Model 250 Menu: THEN 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.
Null Modem Adapter
A Null Modem Adapter is needed to import data to or export data from the Model
250 Projector. The Null Modem Adapter allows the projector to communicate to a
PC or Laptop computer through a serial cable. In essence, it tricks the projector
into thinking it is a modem.
For the pinout of Terminal-In (Port A) and Control-Out (Port B) refer to Figure
8-1
 
Figure 8-1  
Terminal-In and Control-Out pinout. 
						

							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. Use a Null Modem cable to connect between the projector and the
terminal.
5. Use the TERMINAL PREFERENCES and COMMUNICATIONS
PROTOCOL below for Windows setup.
Terminal Preferences
Select SETTINGS again from the menu bar. Select TERMINAL
PREFERENCES. Set the following modes:
Table 8-1  
Terminal preference settings
Line Wrap Yes CR
CR/LF:
Local Echo No      Inbound No
Sound Yes      Outbound No
Columns: Cursor:
     80: Yes      Block: Yes
     132: No      Underline: No
     Blink: Yes
Terminal Font: Translations NONE
     Courier 12 IBM to ANSI No
Terminal Show:
     Scroll Bars Yes Buffer Lines 100
Use Function Arrow
and Control keys for
Windows No 
						

							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 select the file VT-100.TRM with the
above parameters saved for future use.
 Table 8-3  
VT-100 Terminal and Remote Command Equivalents
ActionKeyboard
InputExecutive
Remote KeysService
Remote KeysDec. Hex.
Power OFF
(All)CTRL + F 6 6
Power ON (All) CTRL + U 21 15
Power ON/OFF CTRL-P POWER POWER 16 10
Power
ON/OFF-
Electronics onlyCTRL + E 5 5
Power ON/OFF
LampCTRL + L 12 0C
Left Arrow Left Arrow Left Arrow Left Arrow 27 91
68*1B 5B
44*
Right Arrow Right Arrow Right Arrow Right Arrow 27 91
67*1B 5B
43*
Up Arrow Up Arrow Up Arrow Up Arrow 27 91
65*1B 5B
41*
Down Arrow Down Arrow Down Arrow Down Arrow 27 91
66*1B 5B
42*
Back out of
menuEsc ESC ESC 27 1B
Blanking B BLANK 66 42
Bow, H & V U BOW 85 55
Brightness I BRT BRT 73 49 
						

							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 48-57 30-39
Onscreen O ONSCRN ONSCRN 79 4F
Phase H PHASE 72 48
Picture
sharpnessX SHARP SHARP 88 58
Picture tint Z TINT TINT 90 5A
Pincushion, H
& VN PIN 78 4E
RGB toggle R RGB RGB 82 52
Size, H & V S SIZE 83 53
Test pattern
displayT PATTERN 84 54
Skew, H & V
(RGB)WSKEW8757
Threshold D THRESH 68 44
Sensitivity V SENS 86 56
Registration G XYREG 71 47
Redraw
Terminal
Screen| 124 7C
Reboot**CTRL+Shift+
_31 1F
Restart System
Software***CTRL+Shift+
^30 1E 
						

							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 change (device,
speed) to take effect.