2310 Camino Vida Roble Carlsbad, California
SERVICE MANUAL
Model 250 Projector
Phone 760 929-5300 Fax 760
DECLARATION OF CONFORMITY
Manufacturer Hughes JVC
Chapter 4 Optical
Chapter 1 Introduction
Chapter 2 System Description
Chapter 3 Electrical
Chapter 8 Software and Protocol
Chapter 7 Troubleshooting
Chapter 9 Parts
1.1 Safety
Contents
1.0 Introductio n
1.3 Acronyms Used
1.2 Updates
SECAM
2.0 System De scription
Contents
2.1 Introduction
Power Supplies
Incoming Power Circuit
2.2 Electrical Section
Optical Path
Igniter Assembly
2.3 Optical Section
Arc Lamp Module
CRTs
ILA s - Image Light Amplifier
Input Cards VICs
2.4 Electronic Section
Relay Lens Assemblies
Front Projection Lens
Printed Circuit Boards PCB
IR Detectors
2.5 Miscellaneous Items
CRT/Yoke Assemblies
Projector Covers
EMI Shield
Chapter 2---System Description
Model 250 Service Manual
3.0 Electrical
3.1 Safety
Contents
AC EMI Filter
3.2. Incoming Power Circuit
AC Power Cord
AC Circuit Breaker
LVPS - Inputs
3.3 Power Supplies
Low Voltage Power Supply LVPS
LVPS - Main Functions
LVPS - Operation
3. Remove the front cover see Projector Covers section
Arc Lamp Power Supply ALPS
LVPS - Service Adjustments
LVPS - Remove and Replace
ALPS - Outputs
ALPS - Inputs
ALPS - Operation
ALPS - Remove and Replace
ALPS - Service Adjustments
3. Remove the front cover see section 6.1 Projector Covers
High Voltage Power Supply HVPS
HVPS - Main Functions
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 - Operation
3.4 Igniter Assembly
Igniter Assembly - Inputs
Igniter Assembly - Outputs
Igniter Assembly - Remove and Replace
Igniter Assembly - Service Adjustments
3. Remove the front cover see Projector Covers section
7. Remove the five #1 Pozi-drive Phillips-head screws
Contents
4.0 Optical
Arc Lamp - Inputs
Arc Lamp - Service Adjustments
4.1 Arc Lamp
Arc Lamp - Main Functions
13. Tighten spider lock down bolt
Chapter 4---Optical
horizontally. Adjust to center the “hot spot”
Model 250 Service Manual
Figure 4-2 Arc Lamp alignment fixture
Arc Lamp - Remove and Replace
8. Disconnect large blower fan connector
Optical Path - Main Function
4.2 Optical Path
Optical Path - Outputs
Optical Path - Inputs
Optical Path - Operation
WARNING!!! Wear safety goggles rated X5 when working anywhere near the light path from the arc lamp or the projection lens
4-10
Model 250 Service Manual
Figure 4-6 Optical Path
Chapter 4---Optical
Figure 4-7 Optical Path
Optical Path - Service Adjustments
Tools Needed 3-mm Hex wrench Parts Needed No serviceable parts
Model 250 Service Manual
To adjust the XY Positioner
ILA Outputs
4.3 ILA
ILA Main functions
ILA Inputs
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
Projection Lens - Input
Projection Lens - Service Adjustments
4.4 Relay Lenses
4.5 Projection Lens
Figure 4-11 Projection Lens holding screw and removal notch
Chapter 5 Optical
Model 100 Service Manual
3-4-22
5.0 Electronics
5.1 Safety
Contents
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 - Main Functions
5.4 Video Processor PCB
Video Processor PCB - Inputs
Chapter 5---Electronics
Model 250 Service Manual
5-12
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 - Main Functions
5.6 Horizontal Vertical Deflection PCB
Horizontal Vertical Deflection PCB - Inputs
IICSINT - IIC interrupt
Figure 5-13 Horizontal/Vertical I/O Diagram
Model 250 Service Manual
IICCLK - IIC clock line IICDATA - IIC data line
Chapter 5---Electronics
Model 250 Service Manual
5-23
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
Horizontal Vertical Deflection PCB - Remove and Replace
5.7 Convergence Deflection PCB
Convergence Deflection PCB - Main Functions
Convergence Deflection PCB - Outputs
Convergence Deflection PCB - Inputs
5-30
Figure 5-19 Convergence Deflection PCB I/O Diagram
Model 250 Service Manual
Chapter 5---Electronics
5-31
Figure 5-20 Convergence Deflection PCB I/O Diagram
Model 250 Service Manual
Chapter 5---Electronics
Convergence Deflection PCB - Operation
Convergence Deflection PCB - Remove and Replace
Scan Reversal PCB - Main Functions
5.8 Scan Reversal PCB
Scan Reversal PCB - Inputs
Scan Reversal PCB - Outputs
5-36
Figure 5-22 Scan Reversal PCB I/O Diagram
Model 250 Service Manual
Chapter 5---Electronics
Chapter 5---Electronics
Model 250 Service Manual
5-37
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
Vertical
CAUTION! The Model 250 Projector can not be
Orientation
Convergence
Scan Reversal PCB - Remove and Replace
5.9 Video Amplifier PCB
Video Amplifier PCB - Main Functions
Video Amplifier PCB - Inputs
5-45
Figure 5-26 Video Amplifier PCB I/O Diagram
Model 250 Service Manual
Chapter 5---Electronics
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 - Output
5.10 CRT/Yoke Assemblies
CRT/Yoke Assemblies - Main Function
CRT/Yoke Assemblies - Inputs
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 - Operation
RGBHV VIC - Service Adjustments
RGBHV VIC - Inputs
RGBHV VIC - Outputs
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 - Operation
Graphics Enhancer Plus VIC - Service Adjustments
Graphics Enhancer Plus VIC - Remove and Replace
4-Input Quad RGBHV VIC - Main Functions
4-Input Quad RGBHV VIC
4-Input Quad RGBHV VIC - Inputs
Chapter 5---Electronics
Model 250 Service Manual
IIC CLK - IIC clock line IIC DATA - IIC data line
IIC SINT - IIC interrupt line Figure 5-36 4-Input Quad RGBHV VIC
4-Input Quad RGBHV VIC - Remove and Replace
4-Input Quad RGBHV VIC - Service Adjustments
4-Input Quad RGBHV VIC - Outputs
4-Input Quad RGBHV VIC - Operation
YPbPr VIC - Main Functions
YPbPr VIC
YPbPr VIC - Outputs
YPbPr VIC - Inputs
YPbPr VIC - Operation
YPbPr VIC - Remove and Replace
YPbPr VIC - Service Adjustments
Quad Standard Decoder VIC - Main Functions
Quad Standard Decoder VIC
Quad Standard Decoder VIC - Outputs
Quad Standard Decoder VIC - Inputs
Quad Standard Decoder VIC - Operation
Quad Standard Decoder/Line Doubler VIC
Quad Standard Decoder VIC - Service Adjustments
Quad Standard Decoder VIC - Remove and Replace
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
5-76
Figure 5-44 Backplane Diagram right side
Model 250 Service Manual
Chapter 5---Electronics
Chapter 5---Electronics
Model 250 Service Manual
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6.1 Projector Covers
6.0 Miscellaneous Items
Contents
6.2 Electronics Module Tilt-up
6.3 Ventilation
6.5 IR Detectors
6.4 Air Filters
6.6 EMI Filter
6.7 Cleaning Lenses, ILA Assemblies and Mirrors
Chapter 6---Miscellaneous Items
Model 250 Service Manual
7.1 Safety
7.0 Troubleshooting
Contents
Backpanel LEDs
7.2 LEDs
Figure 7-1 Rear Panel layout
Figure 7-2 Dip Switch Block on System Controller PCB
Model 250 Service Manual
Video Processor PCB LEDs
Video Processor - Test Points
Chapter 7---Troubleshooting
Video Processor - LEDs
Figure 7-6 Raster Timing Generator LEDs
Raster Timing Generator PCB LEDs
Chapter 7---Troubleshooting
Model 250 Service Manual
Raster Timing Generator PCB LEDs
Figure 7-7 Convergence Deflection PCB LED
Convergence Deflection PCB LED
Chapter 7---Troubleshooting
Model 250 Service Manual
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
Convergence Deflection PCB and Scan Reversal PCB
Chapter 7---Troubleshooting
Model 250 Service Manual
Figure 7-13 CRT Deflection path between Horiz/Vert Deflection PCB
7-18
Chapter 7---Troubleshooting
Model 250 Service Manual
Figure 7-14 CRT Deflection path between the Scan Reversal PCB and CRT
CRT Protection
Yoke Connector Detection
7-21
Chapter 7---Troubleshooting
Model 250 Service Manual
Figure 7-16 CRT Protection path between the Scan Reversal PCB and CRT
7.4 Error Codes
“No mem available”
4.17 “VIC1 Board Not OK” /VICOK is High BAD on VIC Slot
Check
7.5 Troubleshooting Guide
Problem
Possible Solution
Model 250 Service Manual
Troubleshooting on the Backplane PCB
Figure 7-17 Backplane Diagram left side
Chapter 7---Troubleshooting
Low Voltage Power Supply J8
7-28
Figure 7-19 Backplane Diagram right side
Chapter 7---Troubleshooting
Model 250 Service Manual
Model 250 Service Manual
Chapter 7---Troubleshooting
7-29
8.1 Software Updating
8.0 Software and Protocol
Contents
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
4. Windows TERMINAL Transfers + Receive Text File
Exporting
Stop, Pause, Bytes 0, Receiving EXPORT1.TXT
Importing
Stop, Pause, “% complete bar”, Sending EXPORT1.TXT
Null Modem Adapter
Terminals
8.3 Terminals and Communication Protocols
Terminal Preferences
Action
Table 8-3 VT-100 Terminal and Remote Command Equivalents
Service
Communications Protocol
Center, H
Refer to Section 8.1, Software Updating
Chapter 8---Software and Protocol
Model 250 Service Manual
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Contents
9.0 Parts List
9.1 Replacement Parts List
Description
Description
Power Cord, USA/Japan
Quantity
9.2 Spares
Description
Model 250 Service Manual
Chapter 9---Parts List
Arc Lamp
Cross-member Assembly
Glossary of Terms
Amorphous
Horizontal Scan
Laser Power Supply
Field
Frame
Noise
Resolution
Lumen
Luminance
Scan
Vertical Resolution
S-Video
Saturated Color
Frequency
Vertical Scan Frequency
Vertical Scan
Vertical Synchronization
CAUTION! Before performing procedures in this chapter, review the chapter on Safety at the beginning of this manual.
WARNING!!! When performing troubleshooting procedures 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.