Hughes Model 230 Projector Service Manual

							Chapter 5---Troubleshooting
Model 230 Service Manual5-11
Problem Check Possible solution Section
No Response
when using IR
remote.Intermittent operation. Replace remote battery or
move closer to the
projector. Stay in the “Line
of sight” of the projector IR
Receiver.
New Software
wont load
properlySwitch position 4 on
switch block on System
Controller board is in
incorrect position.Switch position 4 on
System Controller switch
block sets the speed for
Port A. This speed is
reported in the Comm
Setup menu for Port A.
Switch position 4 must be
in the UP position for a
baud speed of 19200 and
DOWN for 9600 baud.See
menu
under
Comm
Setup,
Section
4.5 of
User
Guide,
Figure 5-
1 of this
manual,
and
Appendix
B, page
B-1, of
this
manual. 
						

							Chapter 5---Troubleshooting
5-12Model 230 Service Manual 
						

							 Chapter 6---Parts List
Series 230 Service Manual6-1
6.0 Parts List
 Description Part no.
Arc Lamp Module 104787
Cathode Ray Tube (CRT) 103465
Contrast Enhancer 104247
CRT/Yoke Assembly 103350
Ignitor Assembly, 1600W (Ignitor & Laser P.S.) 104781
ILA®, SM Moving 3 x 4 Video (High Contrast)
Add for Blue -14, for Green -15, for Red -16.102630
ILA®, SM Moving 3 x 4 Video (Reduced Aperture)
Add for Blue -14, for Green -15, for Red -16.100594
Lens, Condensing 104805
Lens, Relay 103943
Manual, Operation (User’s Guide) 104810
Manual, Service 104809
PCA Convergence Deflection 105210
PCA Horizontal/Vertical Deflection 102583
PCA Raster Timing Generator 102589
PCA System Controller 104678
PCA Video Amplifier 105232
PCA Video Processor 105234
PCA, Backplane 102595
PCA, Graphics Enhancer RGB VIC 104413
PCA, RGBHV VIC 102597
PCA, HDTV VIC (Option) 103765
PCA, Quad RGB Input VIC (Option) 103668
PCA, Quad Standard Decoder VIC (Option) 103545
PCA, Scan Reversal 102585 
						

							Chapter 6---Parts List
6-2Series 230 Service Manual
DESCRIPTION PART NO.
Power Cord (USA) 104769
Power Cord (Japan) 104498
Power Cord (Europe) 104768
Power Supply, Arc Lamp 104495
Power Supply, High Voltage 102566
Power Supply, Low Voltage 102520
Prism Assembly 103942
Projection Lens, 1:1, Fixed 104130
Projection Lens, 1.5:1, Fixed 104003
Projection Lens, 3:1, Fixed 103052
Projection Lens, 7:1, Fixed 104522
Projection Lens, Zoom 103746
Remote Control, Standard 104348
Remote Control, Technician 104019
Remote Control, Tethered Technician 105245
Yoke Assembly, CRT 103467 
						

							Import/Export
Model 230 Service Manual A-1
Model 230 Configuration Data Export / Import Procedure
Rev 1.0.0
This appendix defines the steps to perform a Configuration Data Export & Import from the Model 230
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, .), 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 Model 230 User’s Guide, Section 4.11).
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.  DOWN
is 9600 baud, UP 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.
WARNING:  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).
WARNING:  Laptop computer users  must disable Advance Power Management (APM) during an Export.
APM power pulling causes loss of data.
EXPORT
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 230 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....
 
4.1. Directories - set directory to desired download directory (C:\TEMP)
 
4.2. File Name: - Type desired File Name (for example:  export1.txt)
  
						

							Import/Export
A-2 Model 230  Service Manual
4.3. Select OK with mouse or press Enter key (dialog will be removed)
 
4.4. Verify TERMINAL screen shows status line at bottom:
 Stop,  Pause, Bytes: 0,  Receiving: EXPORT1.TXT
 
5. 
Model 230 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        #
 ##########################
 .END
 
 A similar message is displayed on the projector screen :
 
 =================================
 |     Export Configuration      |
 | EXPORT COMPLETE               |
 | -> STOP Host Download         |
 | -> THEN Press ESC             |
 =================================
 
6. Windows TERMINAL:
 
 Select the Windows TERMINAL STOP button with the mouse to end the Receive Text File...
transfer.
 
7. Model 230 Menu:
 
Press Esc to exit the projector Export operation and return to the Maintenance Menu.
IMPORT
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!
  
						

							Import/Export
Model 230 Service Manual A-3
2. Import will alter all projector setup data.  Prior to starting, several warnings are displayed to
prevent unintentional loss of setup data.
 
3. 
Model 230 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.
 =================================
 |     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 arror 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 230 Menu:
 
 When the projector detects the successful end of the transfer the following screen is displayed:
 =================================
 |     Import Configuration      |
 |  IMPORT COMPLETE              |
 |  New Configuration is active  | 
						

							Import/Export
A-4 Model 230  Service Manual
 |                               |
 | - 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 230 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              |
 =================================
 
 
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 230 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 230 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.
  
						

							Glossary
Model 230 Service Manual B-1
Glossary Of Terms
Amorphous
Without definite form; not crystallized.
Arc Lamp
The xenon arc lamp in the Model 230 projector. It
operates at high temperatures (160° to 200°) and
produces dangerously intensive light with
hazardous levels of ultraviolet and infrared
radiation.
Aspect Ratio
The ratio of the picture width to picture height.
The standard U.S. television aspect ratio is four
units wide to three units high (4:3). High
Definition Television (HDTV) is 16:9.
Bandwidth
The transmission or reception capacity of a
computer or communications channel measured
in bits per second in digital and in Hertz in
communications. Bandwidth is the difference
between the lowest and highest frequencies
transmitted or received. Wider bandwidth
provides more information or picture detail
capability.
Chrominance
Abbreviated as C.  Color information signal or
signals.
Cold Mirror
Mirror that absorbs infrared light so that its
reflection contains only cold light that does not
transmit appreciable heat.  As a result of this
absorption of infrared heat radiation, cold
mirrors get quite hot.
CRT (Cathode Ray Tube)
The vacuum tube used as a display screen in
video terminals or television sets.  Commonly
called the picture tube.
Dichroic Mirrors
The white light of the xenon arc lamp is
separated into red, green and blue by means of
dichroic mirrors which reflect only one color and
pass all others.
Field
One half of a complete video frame. Odd lines in
one field and even lines in another make up one
frame. 
						

							Glossary
B-2 Model 230 Service Manual
Frame
One complete TV picture or screen of
information. It is composed of two fields and has
a total of 525 scanning lines in NTSC
transmission.
Horizontal Scan
Reverses the image projection for front or rear
Reversal Jumper
projection. Located on the Horizontal Deflection
Board.
Horizontal Size Coils
Adjusting coils on the Scan Reversal Board.
Used to adjust the horizontal size (width).
Hot Spot
The Arc Lamp’s brightest area on the screen.
Used to align and focus the Arc Lamp.
Hue
Also referred to as tint.  A specific color such a
blue, pink or aqua.  Hue or tint control on a
display device adjusts red/green balance.
Ignitor
Provides a momentary high voltage to excite the
gases in the Xenon Arc Lamp to ignite.
Image Light Amplifier 
A device that uses low-intensity images to phase
ILA
®modulate a high-intensity light through a liquid 
crystal layer. It is a key component in 
producing very bright, high resolution images 
from Hughes-JVC large-screen projectors.
Image Mirror
Directs the blue and red images toward the 
Combining Prism.
Interlacing
The technique that refreshes a display screen by
alternately displaying all the odd lines (field one)
and then all the even lines (field two) of one
frame.
I/R Windows
The Model 230 Projector has two I/R windows,
one in front, one in back.  These windows receive
projector control signals from the I/R remotes.
Lamphouse Dock
The housing that contains the Ignitor, the Laser
Power Supply, and the Arc Lamp assembly.
Laser Power Supply
Provides boost voltage through a spark gap to
the Ignitor.
Lumen
A unit of measure of the flow, or rate of emission,
of light.  An ordinary wax candle generates 13
lumens while a 100 watt bulb generates 1,200
lumens.