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 2—Functional Descriptions
2-70 Model 330. 340SC, and 370SC Service Manual
Horizontal Deflection Board
I/O
Description
IICDATA
Data line for transferring the following data (I = input, O = output).
O Flyback Switch Select
O Flyback Switch Pulse
I Front/Rear indication
I Floor/Ceiling Indication
O Serial Data Load
Input
Description
/IICINT
Interrupt that tells the SCB that the HDB has data to report.
Horizontal Deflection Board
Output
Description
IICCLK
Clock signal for the IIC data bus.
+SERCLK
Serial data transfer clock.
-SERCLK
Serial data transfer clock.
+SERDATA
Serial data transfer. Used to transfer the following command data:
HPHASE to control the horizontal phase, HLINR to control the
horizontal linearity, HCENTBLU, HCENTGRN, HCENTRED
to control the horizontal centering of the blue, green and red
rasters respectively, and WIDTH to control the horizontal width
of all three rasters and for control of geometric correction.
-SERDATA
Serial data transfer
System Power Supply
Inputs
Description
+5.0V
Power for digital components
+5V STB
Power to CPU and peripherals
+15V
Power for analog components
-15V
Power for analog components
/LAMPLIT
Indicates normal operating voltage being supplied to Arc Lamp
Output
Description
/LVPSNBL
Low Voltage Power Supply Enable
/FANENBL
Signal to enable 24V Standby Power
/ALENBL
Enables Arc Lamp Power
Dot Matrix Status Display
Outputs
Description
LEDDO-6
Data
/LEDLT
Lamp test
/LEDWR
Write