JVC 340 SC - Manual

JVC 340 SC

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Table of Contents:

  • Page 2 – Rev A; Confidential and proprietary information.; ILA; is a registered trademark of Hughes-JVC Technology Corporation.; Hughes-JVC Technology Corporation
  • Page 3 – Safety Information; Introduction; Warnings and Cautions; Warns user of a potential electric shock hazard
  • Page 4 – Installation Safeguards; If there is any visible damage to any of the cables do; Projector Weight; Do Not Tilt the Projector More Than 85 Degrees
  • Page 5 – Heat Safeguards; Fans; Do Not Block Ventilation. Blocking air intake or exhaust; Light Safeguards; Ultra Violet and Infrared Light
  • Page 6 – High temperature, ultraviolet and infrared light. Refer; Due to high voltage danger, DO NOT TOUCH:; CRT anodes—underneath the CRTs.
  • Page 7 – Power Supply; Power; Fluid Safeguards
  • Page 8 – Various procedures in this manual involve the removal
  • Page 10 – Acronyms Used In Manual
  • Page 11 – Hardware Compatibility; Printed Circuit Boards
  • Page 13 – Functional Descriptions; Contents
  • Page 15 – External Power Requirements; Operation at voltages and frequencies outside of these; Electronics Systems Overview
  • Page 17 – Card Cage and Circuit Boards.; System Power Supply
  • Page 18 – Backplane Status Indicators.
  • Page 19 – AC INPUT
  • Page 21 – System Power Supply Input/Output Diagram; Arc Lamp Ignitor
  • Page 23 – High Voltage Power Supply
  • Page 24 – The HVPS provides several voltages to the CRTs:; High Voltage Power Supply Input/Output Diagram
  • Page 26 – Cage; Horizontal Deflection Board
  • Page 27 – Boards
  • Page 29 – Raster Generation Block Diagram
  • Page 30 – Raster Timing Generator Block Diagram
  • Page 31 – Sync Generator
  • Page 32 – Serration and Equalization Lockout
  • Page 33 – Adjustment Counters; Pincushion and linearity correction timing.
  • Page 34 – Serial Communication; Information
  • Page 35 – Raster Timing Generator I/O; System Controller Board
  • Page 37 – Interlocks and Protection
  • Page 38 – Horizontal Deflection Board Block Diagram; Vertical Oscillator
  • Page 39 – Horizontal Phase Locked Loop
  • Page 40 – Flyback Switching
  • Page 41 – Horizontal Sweep Failure Detection; Bus
  • Page 42 – Horizontal Deflection Board I/O
  • Page 46 – Vertical Deflection Board; Vertical Preamps; generated
  • Page 47 – Vertical Amplifiers
  • Page 48 – Horizontal Linearity Correction; button on the remote control can control
  • Page 49 – Correction Amplifiers; BYCORR, from the SCB convergence section.
  • Page 53 – Interlocks and Shutdowns; Input; None
  • Page 54 – sections of this chapter detail the individual PCBs.
  • Page 56 – Video Processor Board, Block Diagram; Decoder
  • Page 57 – under the C; SG Sync Strip; button and using the up and down
  • Page 58 – button and using the up and down arrows on; Gamma Correction
  • Page 59 – RGB Sensitivity and Threshold Amplifier
  • Page 60 – ILA® Bias; Dynamic Focus Amplifier; BUS
  • Page 66 – Output
  • Page 67 – Circuit failure detection.; Video Signal
  • Page 72 – General Functional Description
  • Page 73 – System Controller Board, Block Diagram; CPU
  • Page 74 – The CPU also directs the operation of the DSP.; Working and Compressed Memory
  • Page 75 – Correction Address Generator
  • Page 76 – Overlay Memory
  • Page 77 – Overlay Interface
  • Page 78 – IIC Interface
  • Page 83 – RS-232 Interface Signals; Backplane; External Video; ILAs; PCBs
  • Page 84 – Section; CRT Assembly
  • Page 85 – assembly combines the input signal from the CRT with the high
  • Page 86 – CRT; Screen; Prism; CRT Image; High Intensity Light; Optical Block Diagram
  • Page 87 – assembly and then reflected back toward the same prism. Since the; Projection Lens; produces the images on the screen.
  • Page 88 – Optical Subassemblies; Cold Mirror; Cold mirrors absorb IR light and can get very; Ultraviolet Filter and Condensing Lens; Image Light Amplifier
  • Page 89 – The Hughes-JVC Image Light Amplifier; assembly. For example, when the photoconductor on the input side is; assembly is reflected.
  • Page 90 – The phase modulated light exiting the ILA
  • Page 91 – Service Adjustments; To turn on projector power:
  • Page 92 – With the cover off the projector,; If using a tethered remote or a terminal for projector control, an; Power Interlock Switch and Main Circuit Breaker.
  • Page 93 – If using a terminal or PC, turn full power on by typing CTRL-P.; CRT Yoke Rotation; To prevent possible electrical shock; Cutoff R and B and view G.
  • Page 95 – Vertical Size Tracking
  • Page 96 – Vertical Linearity Tracking; To adjust vertical linearity:
  • Page 97 – Horizontal Size Tracking
  • Page 98 – Bias Settings; assembly won't react properly to incoming
  • Page 99 – CRT Mechanical Focus
  • Page 102 – Focus; To adjust the electronic focus:; Be careful to adjust the E; Repeat Step 3 for R electronic focus.
  • Page 103 – Settings; Projection orientation jumper settings
  • Page 105 – Inverted Vertical Jumpers
  • Page 108 – Arc Lamp Alignment and Focus; Model 330 Arc Lamp Alignment and Focus; If the hot spot is not centered, the Arc Lamp needs alignment.
  • Page 110 – Model 340SC and 370SC Arc Lamp Alignment and Focus; To refocus the Model 340S and 370SC Arc Lamp:
  • Page 111 – Figure 3-9. Model 340SC and 370SC Arc Lamp Adjustments; Do not leave the roll-off at a value higher; Arc Lamp Current Adjustment; If the Arc Lamp current is being adjusted due to
  • Page 112 – Make adjustments in small increments to ensure lamp
  • Page 114 – Turn projector power off with the remote.
  • Page 115 – Disconnect AC power from the projector
  • Page 116 – Major components of the Model 330 Projector.
  • Page 117 – Major components of the Model 340SC and 370SC Projectors.
  • Page 118 – Covers; When removing the projector covers do not bump; When both covers are to be removed, the front cover; Filters
  • Page 119 – This filter can also be removed, while leaving the rear cover in; Arc Lamp Assembly; High Voltage points of up to 40,000 volts are
  • Page 120 – shown without Heat Sink attached)
  • Page 121 – Ignitor
  • Page 122 – System Power Supply-Arc Lamp Connection.
  • Page 123 – Whenever an Arc Lamp is replaced the Collimating Lens may
  • Page 124 – If the center brightness is 20 foot-candles, the ideal edge; ) and move the collimating lens to orient the hot-spot; System Power Supply; Colors may be different, depending on country of use.
  • Page 125 – System Power Supply (right side of projector)
  • Page 126 – TIE WRAP; Module; To remove the Electronics Module:
  • Page 127 – Remove anything plugged into the rear; Do not bump the CRT cooling bellows; Replace the module in the reverse order.
  • Page 128 – WARNING; Model 330 CRT Removal; Model 330 CRT Assembly
  • Page 130 – CRT Z-Axis Focus Adjustment Rods (circled
  • Page 132 – Unplug and label the five cables connected to the VAB.; Yoke; Loosen the yoke clamp and ensure the yoke is loose on the CRT neck.
  • Page 133 – Carefully slide all G2, and focus cables out of the CRT housing.
  • Page 134 – Printed circuit boards in the electronics module; CAUTION; Before inserting a PCB into the card cage,
  • Page 135 – Image Light Amplifier Assembly; The ILA
  • Page 136 – Be very careful when performing this; NOTE
  • Page 138 – Lens
  • Page 139 – System Controller Board SRAM Chips Location.; Never place the socket battery on; SRAM Chip, Extension and Battery Side View
  • Page 140 – Recommended Spares; PART NUMBERS
  • Page 141 – Troubleshooting
  • Page 143 – Codes; First Set
  • Page 144 – Second Set; Code
  • Page 145 – Points
  • Page 146 – Select #7—this is an invisible menu item.; Description per list in the LED display errors above.
  • Page 147 – Main Menu Structure; Menu Structure Diagram.
  • Page 149 – Arc Lamp
  • Page 150 – Image out of focus; Picture geometry; and
  • Page 152 – Picture—various
  • Page 153 – Remote
  • Page 155 – Glossary of Terms
  • Page 162 – temporarily with the Executive I/R remote.; Vertical Resolution; The amount of detail that can be perceived in the vertical; Vertical Scan Frequency; The vertical scan frequency of the input signal.; Vertical
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SERVICE

MANUAL

Model 330

Model 340 SC

Model 370 SC

Hughes-JVC Technology Corporation

2310 Camino Vida Roble, Carlsbad, CA 92009-1504

☎

760-929-5300

F

AX

760-929-5410

e

-

✉

[email protected]

DECLARATION OF CONFORMITY

PER ISO/IEC GUIDE 22 AND EN 45014

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Summary

Page 2 - Rev A; Confidential and proprietary information.; ILA; is a registered trademark of Hughes-JVC Technology Corporation.; Hughes-JVC Technology Corporation

iii Model 330, 340SC and 370SC Service Manual Manufacturer: Hughes-JVC Technology Corporation2310 Camino Vida RobleCarlsbad, CA 92009-1504USA Hughes-JVC declares that this product conforms to the followingProduct Specifications (Directive/Standard): Safety: EN 60950 IEC 950 (1992) EMC: EN 55022 (198...

Page 3 - Safety Information; Introduction; Warnings and Cautions; Warns user of a potential electric shock hazard

Safety Model 330, 340SC, and 370SC Service Manual v Safety Information Introduction Before operating or working on a Model 330, 340SC and 370SC Projector, especiallywith the cover off, please read this safety information section thoroughly. Proceduresrequiring the opening of the projector covers and...

Page 4 - Installation Safeguards; If there is any visible damage to any of the cables do; Projector Weight; Do Not Tilt the Projector More Than 85 Degrees

Safety vi Model 330, 340SC, and 370SC Service Manual must accept any interference received including interference that may cause undesiredoperation. Operation of this equipment in a residential area is likely to cause harmful interference, inwhich case the user will be required to correct the interf...

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