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
Chapter 3---Service Adjustments
Model 330, 340SC, 370SC Service Manual 3-17
8. Adjust Menu Position using the Grey Scale and the Timing Setup Menu.
(Refer to the Menu Position section).
To set G2:
1. Cut off R and B and view G.
2. Select the Pluge test pattern.
3. Adjust green G2 so that the small, black rectangle in the center of the
larger, black rectangle is just barely visible (Figure 3-8).
4. Select the Dot Pattern test pattern and toggle the HIDE key. While
toggling, verify there is no change in the background raster brightness.
(The Dot Pattern will turn on and off as the HIDE key is toggled but the
background brightness should not change while toggling.) If the
background brightness changes as the HIDE key is toggled, G2 is set too
high and the procedure should be repeated. When readjusting G2, look for
a slightly less visible small, black rectangle in the larger, black rectangle.
5. Select the Pluge test pattern again.
6. Cut off G and view R.
NOTE:
When setting the G2 levels for green, red, and blue, they should
be set as closely as possible so that all 3 colors are at approximately the
same level.
7. 7. Repeat steps 3 and 4 for the red G2 level.
8. 8. Cut off R and view B.
9. 9. Repeat Steps 3 and 4 for the blue G2 level.
NOTE:
G-2 adjustments affect Color Balance, Shading, and Proportional
Offset. After completing the G-2 setting, verify and readjust these
adjustments.
Figure 3-9
The Pluge test pattern. Use the two small rectangles in the center to
set G2 and Sensitivity Offset.