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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Chapter 2—Functional Descriptions
2-40 Model 330. 340SC, and 370SC Service Manual
Outputs
Description
FLRCLING
Low signal generated from jumper on connector J400 indicates non-
inverted operation.
GEOCORR
Output from L/R pincushion and keystone correction circuits.
Main Vertical Deflection Coils
Outputs
Description
+RVERTYK
Supply line to the main vertical deflection coil (red) after going through
FLRCLING jumper plug.
-RVERTYK
Return from main vertical deflection coil (red) after going through
FLRCLING jumper plug.
+GVERTYK
Similar to +RVERTYK.
-GVERTYK
Similar to -RVERTYK.
+BVERTYK
Similar to +RVERTYK.
-BVERTYK
Similar to -RVERTYK.
Correction Coils
Outputs
Description
+RXCORR
Supply to the red X correction coil.
-RXCORR
Return from the red X correction coil.
+RYCORR
Similar to +RXCORR.
-RYCORR
Similar to -RXCORR.
+GXCORR
Similar to +RXCORR.
-GXCORR
Similar to -RXCORR.
+GYCORR
Similar to +RXCORR.
-GYCORR
Similar to -RXCORR.
+BXCORR
Similar to +RXCORR.
-BXCORR
Similar to -RXCORR.
+BYCORR
Similar to +RXCORR.
-BYCORR
Similar to -RXCORR.
System Power Supplies
Inputs
Description
+24V
Power to vertical deflection.
+15V
Power for analog portions of VDB.
-15V
Power for analog portions of VDB.
+5V
Power for digital devices on VDB.
GND
Return for power on VDB.