Projector Service Manual
Table Of Contents
- DECLARATION OF CONFORMITY
- BZSAFE.PDF
- CH1INTRO.PDF
- CH2SYSDE.PDF
- Functional Descriptions
- Contents
- Cover and Base
- External Power Requirements
- Electronics Systems Overview
- System Power
- Card Cage
- Circuit Boards
- Raster Timing Generator Board (RTG) p/n 100568
- Sync Generator
- Sync Detector and Selector
- Serration and Equalization Lockout
- Phase Locked Loop
- VSYNC Detector, Field Separator, and Mux
- Adjustment Counters
- Serial Communication
- Raster Timing Generator I/O
- Interlocks and Protection
- Horizontal Deflection Board P/N 102523 (HDB)
- Vertical Oscillator
- Horizontal Phase Locked Loop
- Horizontal Centering
- Horizontal Power Supply
- Flyback Switching
- Geometric Correction
- Output Section
- Horizontal Sweep Failure Detection
- Serial Communication
- Horizontal Deflection Board I/O
- Interlocks and Protection
- Vertical Deflection Board P/N 102521(VDB)
- Vertical Preamps
- Vertical Amplifiers
- Sweep Failure Detection
- Side Pincushion and Keystone Correction
- Horizontal Linearity Correction
- Top and Bottom Pincushion and Keystone Correction
- Correction Amplifiers
- Serial Communication
- General I/O
- Interlocks and Shutdowns
- Video Processor Board P/N 104672 (VPB)
- Decoder
- Video/Sync Mux
- V & H Sync Strip
- SG Sync Strip
- B, G, and R Brightness and Contrast Amplifiers
- On-Screen Switch
- Gamma Correction
- Switch Logic and Video Enable
- RGB Sensitivity and Threshold Amplifier
- ILA® Bias
- Dynamic Focus Amplifier
- Serial Communication
- General I/O
- Interlocks and Protection
- Video Amplifier Board P/N 103567 or 103774 (VAB)
- Video Signal
- Failure Detection
- Beam Current Sense
- DC Restore
- Arc Protection
- Blanking
- Enable Circuit
- Focus
- Filament Supply
- General I/O
- System Controller Board P/N 104668 (SCB)
- General Functional Description
- CPU
- Working and Compressed Memory
- Expanded Memory
- Correction Address Generator
- DACs
- DSP
- Overlay Memory
- Overlay Address Generator
- Overlay Interface
- LED Display Buffers and Logic
- RS232 Interface
- IR Interface
- IIC Interface
- Serial Interface
- General I/O
- Backplane Board p/n 100571
- Optical Section
- Image Light Amplifier
- Functional Descriptions
- CH3ADJST.PDF
- CH4MAINT.PDF
- Maintenance Remove/Replace)
- Contents
- Introduction
- Projector Covers
- Ventilation Filters
- Arc Lamp Assembly
- System Power Supply
- Electronics Module
- Cathode Ray Tube (CRT)
- Video Amplifier Board (VAB)
- CRT Yoke
- High Voltage Power Supply (HVPS)
- Card Cage (Printed Circuit Boards)
- Image Light Amplifier Assembly
- Projection Lens
- (SCB) Socket Battery Replacement
- Recommended Spares
- Maintenance Remove/Replace)
- CH5TRBSH.PDF
- HGLOSS.PDF
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Glossary
Model 330, 340SC, and 370SC Service Manual
Intensity
Concentration of information or what would be seen if a black
and white version of the image is displayed.
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 Executive Remote
Used to control the Series 300 Projector during presentations.
Limited use compared to the technician remotes; cannot
permanently change any projector setup values.
I/R Technician Remote
Remote control used during Series 300 setup and adjustment.
Alternative to optional terminal and tethered technician
remote.
I/R Windows
The Series 300 Projector has two I/R windows, one in front,
one in back. These windows receive projector control signals
from the I/R remotes.
ISO 9001
Standard of Quality. Hughes-JVC received ISO
certification May 15, 1997.
Keystone Adjustment
Corrects lines nearest to the screen edge to make them straight
and parallel to the center line of the test pattern or square to
the screen edge. The keystone adjustment is performed on
green only and affects all RGB.
Keystone Image
Distortion resulting from having the projector improperly
placed vertically with respect to the screen.
Lamp Assembly
Behind the optics assembly, the arc lamp and one "cold"
mirror are mounted in an extension chamber.
Line Crawl
Tendency of the eyes to follow the sequentially flashing
scanned lines of interlaced scanning up or down the screen in
the same way that the eyes follow the sequentially flashing
light bulbs on a movie theatre marquee. Line crawl tends to
reduce vertical resolution.
Linearity Adjustment
Corrects for improper horizontal grid spacing on an image.
With distorted linearity, lines in the grid are spaced closer
together on one side of the image and farther apart on the
other. The linearity adjustment is performed on green only
and affects all RGB..