Model 250 Projector
SERVICE MANUAL
Phone 760 929-5300 Fax 760
2310 Camino Vida Roble Carlsbad, California
DECLARATION OF CONFORMITY
Manufacturer Hughes JVC
Chapter 2 System Description
Chapter 1 Introduction
Chapter 3 Electrical
Chapter 4 Optical
Chapter 9 Parts
Chapter 7 Troubleshooting
Chapter 8 Software and Protocol
1.0 Introductio n
Contents
1.1 Safety
1.3 Acronyms Used
1.2 Updates
SECAM
2.1 Introduction
Contents
2.0 System De scription
2.2 Electrical Section
Incoming Power Circuit
Power Supplies
2.3 Optical Section
Igniter Assembly
Arc Lamp Module
Optical Path
CRTs
ILA s - Image Light Amplifier
Relay Lens Assemblies
2.4 Electronic Section
Front Projection Lens
Input Cards VICs
Printed Circuit Boards PCB
CRT/Yoke Assemblies
2.5 Miscellaneous Items
Projector Covers
IR Detectors
EMI Shield
Chapter 2---System Description
Contents
3.1 Safety
3.0 Electrical
AC Power Cord
3.2. Incoming Power Circuit
AC Circuit Breaker
AC EMI Filter
Low Voltage Power Supply LVPS
3.3 Power Supplies
LVPS - Main Functions
LVPS - Inputs
LVPS - Operation
LVPS - Service Adjustments
Arc Lamp Power Supply ALPS
LVPS - Remove and Replace
3. Remove the front cover see Projector Covers section
ALPS - Outputs
ALPS - Inputs
ALPS - Operation
ALPS - Remove and Replace
ALPS - Service Adjustments
HVPS - Main Functions
High Voltage Power Supply HVPS
3. Remove the front cover see section 6.1 Projector Covers
HVPS - Outputs
HVPS - Inputs
HVPS - Operation
HVPS - Service Adjustments
Electronic Focus Adjustment
HVPS - Remove and Replace
Table 3-1 HVPS - P45 I/O Pinout
10. Disconnect P45 “Control” at upper left of HVPS
Igniter Assembly - Inputs
3.4 Igniter Assembly
Igniter Assembly - Outputs
Igniter Assembly - Operation
3. Remove the front cover see Projector Covers section
Igniter Assembly - Service Adjustments
Igniter Assembly - Remove and Replace
7. Remove the five #1 Pozi-drive Phillips-head screws
Contents
4.0 Optical
4.1 Arc Lamp
Arc Lamp - Service Adjustments
Arc Lamp - Main Functions
Arc Lamp - Inputs
13. Tighten spider lock down bolt
Model 250 Service Manual
horizontally. Adjust to center the “hot spot”
Figure 4-2 Arc Lamp alignment fixture
Chapter 4---Optical
Arc Lamp - Remove and Replace
8. Disconnect large blower fan connector
Optical Path - Main Function
4.2 Optical Path
Optical Path - Operation
Optical Path - Inputs
Optical Path - Outputs
WARNING!!! Wear safety goggles rated X5 when working anywhere near the light path from the arc lamp or the projection lens
Figure 4-6 Optical Path
Model 250 Service Manual
Chapter 4---Optical
4-10
Tools Needed 3-mm Hex wrench Parts Needed No serviceable parts
Optical Path - Service Adjustments
Model 250 Service Manual
Figure 4-7 Optical Path
To adjust the XY Positioner
ILA Main functions
4.3 ILA
ILA Inputs
ILA Outputs
ILA Operation
ILA Service Adjustments
ILA Overlap
14. Loosen the two hex nuts, using a 4-mm hex-head wrench
19. Retighten the two wing nuts and tighten the two hex nuts
NOTE Do not use the zoom lens focus while performing this step
ILA Remove and Replace
4.4 Relay Lenses
Projection Lens - Service Adjustments
4.5 Projection Lens
Projection Lens - Input
Figure 4-11 Projection Lens holding screw and removal notch
3-4-22
Model 100 Service Manual
Chapter 5 Optical
Contents
5.1 Safety
5.0 Electronics
5.2 Introduction
System Controller PCB - Main Function
5.3 System Controller PCB
I/O control for VIC selection Two RS-232 serial interface ports
Chapter 5---Electronics
Model 250 Service Manual
System Controller PCB - Inputs
System Controller PCB - Outputs
System Controller PCB - Operation
Figure 5-6 Power On timing sequence Normal Operation Functions
System Controller PCB - Remove and Replace
Video Processor PCB - Inputs
5.4 Video Processor PCB
Video Processor PCB - Main Functions
5-12
Model 250 Service Manual
Chapter 5---Electronics
Video Processor PCB - Outputs
Video Processor PCB - Operation
Video Processor PCB - Remove and Replace
Raster Timing Generator PCB - Main Functions
5.5 Raster Timing Generator PCB
Raster Timing Generator PCB - Inputs
Raster Timing Generator PCB - Outputs
Raster Timing Generator PCB - Operation
Raster Timing Generator PCB - Remove and Replace
Horizontal Vertical Deflection PCB - Inputs
5.6 Horizontal Vertical Deflection PCB
Horizontal Vertical Deflection PCB - Main Functions
Model 250 Service Manual
Figure 5-13 Horizontal/Vertical I/O Diagram
IICCLK - IIC clock line IICDATA - IIC data line
IICSINT - IIC interrupt
5-23
Model 250 Service Manual
Chapter 5---Electronics
Vertical Adjustment Pots
Horizontal Vertical Deflection PCB - Outputs
Horizontal Vertical Deflection PCB - Operation
Horizontal Vertical Deflection PCB - Service Adjustments
Figure 5-17 Red image needs vertical adjustment increase
Convergence Deflection PCB - Main Functions
5.7 Convergence Deflection PCB
Horizontal Vertical Deflection PCB - Remove and Replace
Convergence Deflection PCB - Outputs
Convergence Deflection PCB - Inputs
Model 250 Service Manual
Figure 5-19 Convergence Deflection PCB I/O Diagram
Chapter 5---Electronics
5-30
Model 250 Service Manual
Figure 5-20 Convergence Deflection PCB I/O Diagram
Chapter 5---Electronics
5-31
Convergence Deflection PCB - Operation
Convergence Deflection PCB - Remove and Replace
Scan Reversal PCB - Inputs
5.8 Scan Reversal PCB
Scan Reversal PCB - Main Functions
Scan Reversal PCB - Outputs
Model 250 Service Manual
Figure 5-22 Scan Reversal PCB I/O Diagram
Chapter 5---Electronics
5-36
5-37
Model 250 Service Manual
Chapter 5---Electronics
Scan Reversal PCB - Operation
front/upright projection. This means the horizontal scan jumper is plugged into J100, the vertical scan jumper is plugged into J53, and the convergence jumper is plugged into J50
Scan Reversal PCB - Service Adjustments
Page
Orientation
CAUTION! The Model 250 Projector can not be
Convergence
Vertical
Video Amplifier PCB - Main Functions
5.9 Video Amplifier PCB
Scan Reversal PCB - Remove and Replace
Video Amplifier PCB - Inputs
Model 250 Service Manual
Figure 5-26 Video Amplifier PCB I/O Diagram
Chapter 5---Electronics
5-45
Video Amplifier PCB - Outputs
Video Amplifier PCB - Operation
Video Amplifier PCB - Remove and Replace
Page
15. Reinstall in the reverse order from above
CRT/Yoke Assemblies - Main Function
5.10 CRT/Yoke Assemblies
CRT/Yoke Assemblies - Inputs
CRT/Yoke Assemblies - Output
CRT/Yoke Assemblies - Operation
CRT/Yoke Assemblies - Service Adjustments
CRT Mechanical Focus
Figure 5-29 CRT Mechanical Focus adjustments CRT Rotation
12. In the Geometry menu, put a check the Reg Enable box
CRT Electronic Focus
CRT/Yoke Assemblies - Remove and Replace
CAUTION! Use extreme caution to avoid bumping
5.11 Video Input Cards VICs
RGBHV VIC - Main Functions
Standard RGBHV VIC
RGBHV VIC - Inputs
RGBHV VIC - Service Adjustments
RGBHV VIC - Outputs
RGBHV VIC - Operation
Grahics Enhancer Plus RGBHV VIC - Main Functions
Graphics Enhancer Plus RGBHV VIC
Graphics Enhancer Plus VIC - Outputs
Graphics Enhancer Plus VIC - Inputs
Graphics Enhancer Plus VIC - Remove and Replace
Graphics Enhancer Plus VIC - Service Adjustments
Graphics Enhancer Plus VIC - Operation
4-Input Quad RGBHV VIC - Inputs
4-Input Quad RGBHV VIC
4-Input Quad RGBHV VIC - Main Functions
IIC CLK - IIC clock line IIC DATA - IIC data line
Model 250 Service Manual
IIC SINT - IIC interrupt line Figure 5-36 4-Input Quad RGBHV VIC
Chapter 5---Electronics
4-Input Quad RGBHV VIC - Outputs
4-Input Quad RGBHV VIC - Service Adjustments
4-Input Quad RGBHV VIC - Operation
4-Input Quad RGBHV VIC - Remove and Replace
YPbPr VIC - Main Functions
YPbPr VIC
YPbPr VIC - Operation
YPbPr VIC - Inputs
YPbPr VIC - Outputs
YPbPr VIC - Remove and Replace
YPbPr VIC - Service Adjustments
Quad Standard Decoder VIC - Main Functions
Quad Standard Decoder VIC
Quad Standard Decoder VIC - Operation
Quad Standard Decoder VIC - Inputs
Quad Standard Decoder VIC - Outputs
Quad Standard Decoder VIC - Remove and Replace
Quad Standard Decoder VIC - Service Adjustments
Quad Standard Decoder/Line Doubler VIC
installed in the #2 or 3 VIC slot it will not fit into the #1 slot, a blank face plate must be installed above it. The blank faceplate is not included with the Quad Standard Decoder/Line Doubler VIC unless it is installed at the factory. The part number for the blank faceplate is p/n
5.12 Backplane PCB
see Figure
Figure 5-43 Backplane Diagram middle section
Model 250 Service Manual
Figure 5-44 Backplane Diagram right side
Chapter 5---Electronics
5-76
5-77
Model 250 Service Manual
Chapter 5---Electronics
Contents
6.0 Miscellaneous Items
6.1 Projector Covers
6.2 Electronics Module Tilt-up
6.3 Ventilation
6.6 EMI Filter
6.4 Air Filters
6.5 IR Detectors
6.7 Cleaning Lenses, ILA Assemblies and Mirrors
Chapter 6---Miscellaneous Items
Model 250 Service Manual
Contents
7.0 Troubleshooting
7.1 Safety
Backpanel LEDs
7.2 LEDs
Figure 7-1 Rear Panel layout
Figure 7-2 Dip Switch Block on System Controller PCB
Video Processor - Test Points
Video Processor PCB LEDs
Chapter 7---Troubleshooting
Model 250 Service Manual
Video Processor - LEDs
Chapter 7---Troubleshooting
Raster Timing Generator PCB LEDs
Model 250 Service Manual
Figure 7-6 Raster Timing Generator LEDs
Raster Timing Generator PCB LEDs
Chapter 7---Troubleshooting
Convergence Deflection PCB LED
Model 250 Service Manual
Figure 7-7 Convergence Deflection PCB LED
Video Amplifier PCB LED
Backplane PCB LEDs
Command ON Timing
7.3 Diagrams
to the Arc Lamp Power Supply low. The Arc Lamp Power Supply delivers 170 V to the Igniter, which generates a 32 kV pulse to the Arc Lamp and the Arc Lamp lights. Once the Arc Lamp lights, the Arc Lamp Power Supply, the /LAMPLIT signal goes low and the voltage to the Igniter drops to between 25 V and 31 V. The voltage from the Arc Lamp Power Supply stays at a steady output of 2 kW during normal operation of the projector
Image Path
Deflection Path
The Horizontal Vertical Deflection PCB outputs HOUTFLYBACK to the Scan Reversal PCB. This is the horizontal deflection waveform that drives the horizontal CRT deflection yokes. The HRED+, GRN+, and BLU+ are the horizontal deflection returns. The outputs of the vertical amplifier are VRED+, GRN+, and BLU+. The returns are VRED-, GRN-, and BLU
Model 250 Service Manual
Chapter 7---Troubleshooting
Figure 7-13 CRT Deflection path between Horiz/Vert Deflection PCB
Convergence Deflection PCB and Scan Reversal PCB
Model 250 Service Manual
Chapter 7---Troubleshooting
Figure 7-14 CRT Deflection path between the Scan Reversal PCB and CRT
7-18
CRT Protection
Yoke Connector Detection
Model 250 Service Manual
Chapter 7---Troubleshooting
Figure 7-16 CRT Protection path between the Scan Reversal PCB and CRT
7-21
7.4 Error Codes
“No mem available”
4.17 “VIC1 Board Not OK” /VICOK is High BAD on VIC Slot
Problem
7.5 Troubleshooting Guide
Possible Solution
Check
Figure 7-17 Backplane Diagram left side
Troubleshooting on the Backplane PCB
Chapter 7---Troubleshooting
Model 250 Service Manual
Low Voltage Power Supply J8
Chapter 7---Troubleshooting
Figure 7-19 Backplane Diagram right side
Model 250 Service Manual
7-28
7-29
Chapter 7---Troubleshooting
Model 250 Service Manual
Contents
8.0 Software and Protocol
8.1 Software Updating
Cursor=Block & Blink Terminal Font=Fixedsys Translation=None
11B. From the Windows Terminal Menu normally in Accessories window, select Transfers/Send Text File, then select List Files of Type All Files, and select the disk and/or directory with the Model 250 software. You should see a file named boot.hex. Select this file and press the OK button to begin the upload. Uploading takes about 20 minutes 9600 bps
12A. To update the System Software from the Boot Manager prompt
8.2 Importing/Exporting
Configuration
Stop, Pause, Bytes 0, Receiving EXPORT1.TXT
Exporting
4. Windows TERMINAL Transfers + Receive Text File
Importing
Stop, Pause, “% complete bar”, Sending EXPORT1.TXT
Null Modem Adapter
Terminal Preferences
8.3 Terminals and Communication Protocols
Terminals
Service
Table 8-3 VT-100 Terminal and Remote Command Equivalents
Communications Protocol
Action
Center, H
Refer to Section 8.1, Software Updating
8-14
Model 250 Service Manual
Chapter 8---Software and Protocol
9.1 Replacement Parts List
9.0 Parts List
Description
Contents
Description
Power Cord, USA/Japan
Description
9.2 Spares
Quantity
Model 250 Service Manual
Chapter 9---Parts List
Glossary of Terms
Cross-member Assembly
Amorphous
Arc Lamp
Field
Laser Power Supply
Frame
Horizontal Scan
Lumen
Resolution
Luminance
Noise
S-Video
Vertical Resolution
Saturated Color
Scan
Vertical Scan
Vertical Scan Frequency
Vertical Synchronization
Frequency
CAUTION! Before performing procedures in this chapter, review the chapter on Safety at the beginning of this manual.
WARNING!!! When performing procedures in this chapter that require projector covers to be off, wear high voltage gloves (ANSI/ASTM 10,000 volt rated) when working near the CRTs, Arc Lamp, or power supplies. Wear safety goggles (rated X5) when working anywhere near the light path from the arc lamp or the projection lens.
CAUTION! It is very strongly recommended that setup data be downloaded (Exported, see section 8.2 Importing/Exporting) before performing any of the following procedures. Exporting baseline source setup data to disk is an excellent precautionary measure. It will save the time of setting up new source file(s) in the case of an unexpected problem.