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
Glossary
Model 330, 340SC, and 370SC Service Manual
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.
Luminance
Abbreviated as "Y." The portion of the signal that contains
the black and white information, which affects brightness.
Monochrome
Single color and refers to monitors that display only one color
along with back, such as white on black, black on white,
green on black and amber on black.
MTS
(Multi-Channel Television Sound) A stereo TV signal is
transmitted together with the regular TV signal. Allows
stereo audio for TV.
Multisync Monitor
A display monitor that adjusts automatically to the
synchronization frequency of the video display board that's
sending signals to it. Multisync monitors can adjust to a
range of frequencies, but not all of them.
Noise
An undesirable electrical interference of a signal.
NTSC
(National Television Standards Committee) The NTSC
governs the standard for television and video playback and
recording in the United States. The NTSC standard is 525
lines of resolution and is transmitted at 60 half frames
(interlaced) per second.
Optics Module
Contains the optics used to transmit light from the arc lamp to
the projection channels (blue, green and red).
Overscanning
Displaying less than the complete area of an image to a
viewer (i.e., scanning beyond the visible area). All TV sets
are overscanned at least slightly, so that viewers do not see
blanking.
PAL
(Phase Alternate Line) The 625-line, 50-field system used in
the UK, Western Europe, Scandinavia, Australia, South
Africa and other countries.
Pluge
Test pattern used to set B/W scale. Grid of four squares
within four squares.