jvc M100 Service Manual

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SERVICE

MANUAL

Model 100 Projector

2310 Camino Vida Roble Carlsbad, California 92009

Phone: (760) 929-5300

Fax: (760) 929-5410

DECLARATION OF CONFORMITY

PER ISO/IEC GUIDE 22 AND EN 45014

Manufacturer: Hughes JVC

2310 Camino Vida Roble Carlsbad, Ca 92009

USA Hughes-JVC declares that this product conforms to the following Product Specifications (Directive/Standard):

Safety:EN 60950

IEC 950 (1992)

EMC: EN 55022 (1988) / CISPR-22 (1986) Class "A"

EN 50082-1 (1992) / IEC 801-2(1991)

EN 50082-1 (1992) / IEC 801-3(1984)

EN 50082-1 (1992) / IEC 801-4(1988)

ANSI C63.4-1992, FCC, Part 15, Class A

In addition, the above product complies with the requirements of the Low Voltage Directive 73/23 EEC and the EMC Directive 89/336/EEC.

105827 First Edition February 1999

Revision A July 1999

revised without prior notice. No part of this manual may be reproduced in any form without the express written

permission of Hughes-JVC Technology Corporation.

is a registered trademark of Hughes-JVC Technology Corporation.

ILA

Model 100 Service Manual

Table of Contents

Safety Information

...............................................................................

Chapter 1 Introduction

1.1 Safety...............................................................................................1-1

1.2 Updates............................................................................................1-1

1.3 Tool List..........................................................................................1-2

1.4 Acronyms Used in this Manual......................................................1-2

Chapter 2 Functional Description

2.1 Introduction....................................................................................2-1

2.2 Optical Section...............................................................................2-2

2.3 Electronics System.........................................................................2-9

Chapter 3 Service Adjustments

3.1 Introduction....................................................................................3-1

3.2 Arc Lamp Adjustment....................................................................3-5

3.2 ILA® Back Focus............................................................................3-9

3.3 CRT Electronic Focus....................................................................3-11

3.4 ILA® Overlap..................................................................................3-12

3.5 Front/Rear or Inverted Projection Jumper Settings........................3-13

3.8 Horizontal Size Settings.................................................................3-15

3.9 Software Updating..........................................................................3-17

3.11 Graphic Enhancement Adjustment.................................................3-21

3.12 Cleaning Lenses, ILA® Assemblies and Mirrors............................3-22

Chapter 4 Maintenance (Removal/Replacement)

4.1 Introduction....................................................................................4-1

4.2 Projector Covers.............................................................................4-4

4.3 Air Filters .......................................................................................4-4

4.4 Arc Lamp Assembly.......................................................................4-5

4.5 Ignitor Assembly............................................................................4-7

4.6 Arc Lamp Power Supply................................................................4-8

4.7 Low Voltage Power Supply............................................................4-9

4.8 High Voltage Power Supply...........................................................4-9

4.9 System Controller \ Raster Timing Generator................................4-10

4.10 Video Processor PCBs ...................................................................4-11

4.11 Deflection Processor PCB..............................................................4-12

4.12 Vertical Convergence Deflection PCB...........................................4-12

4.13 Horizontal Deflection PCB ............................................................4-13

4.14 Video Input Cards ..........................................................................4-13

4.15 Regulator PCB................................................................................4-13

4.16 Video Amplifier PCBs...................................................................4-14

4.17 CRT/ILA® Assembly.....................................................................4-15

4.18 Projection Lens...............................................................................4-17

4.19 Recommended Spares....................................................................4-19

Model 100 Service Manual

iii

Chapter 5 Troubleshooting

5.1 PCB Status LEDs.............................................................................. 5-1

5.2 Error Codes .......................................................................................5-5

5.3 Troubleshooting Guide...................................................................... 5-8

Chapter 6 Parts List

............................................................................

Appendix A Import/Export Appendix B Glossary

...........................................................................

6-1

............................................................A-1

B-1

Model 100 Service Manual

Safety Information

Introduction

Read entire Safety Chapter thoroughly before performing any maintenance or service on the projector. Only qualified service personnel should perform procedures and adjustments.

Safety Equipment: Use safety equipment specified in the projector’s maintenance training and certification program.

Warnings and Cautions!

Warnings and Cautions in this manual should be read thoroughly and strictly adhered to. Warning and Caution definitions and symbols are as follows:

Safety Information

WARNING SYMBOL!!!

potential electric shock hazard in a procedure or situation that could result in personal injury if improperly performed.

CAUTION SYMBOL!

safety hazard or potential light hazard from ultraviolet, infrared or bright light that could cause severe eye injury or a situation that could result in damage to the equipment if improperly used.

Installation Safeguards

WARNING!!!

require removing the projector’s covers to access internal component to remove, replace, service and adjust the projector. Only HughesJVC Certified Technicians are qualified to perform these procedures. Before removing or replacing any internal components or subassemblies, verify that the circuit breaker on the back panel is in the Off position

and

remove the power plug. Any adjustments

Warns user of a

Warns user of a potential

Procedures in this service manual

Model 100 Service Manual v

Safety Information

performed that require covers off and power on should be performed with extreme care. Be especially aware of all hazardous areas indicated by warning and caution labels.

without using a safe shipping pallet. Lifting the projector without supporting the weight at the foot locations can cause severe damage to the projector.

If there is any visible damage to the power cable, disconnect power to the projector until the damaged cable is replaced. Install the projector on a smooth, vibration-resistant level surface, or ceiling mount, in an area free from dust and moisture. Do not place the equipment in direct sunlight or near heat-radiating appliances. Smoke, steam and exposure to direct sunlight could adversely affect the internal components.

CAUTION!

Do not use a forklift to lift the projector

If mounting the projector, use hardware that can handle a minimum of three (3) times the projector weight.

Heat Safeguards

Fans and Ventilation: The projector has multiple fans to cool the system. Do not block the intake or outflow of any fans. Heat is emitted within the

system and must be properly dissipated to keep the system running correctly. Blocking air intake or exhaust ports can lead to projector overheating. Do not enclose the unit in a restricted space (refer to the physical access and thermal clearance illustration guidelines).

CAUTION!

the arc lamp fan has stopped running. This fan protects the arc lamp from overheating. Disconnecting power before the cooling fans have stopped running can shorten Arc Lamp life.

Light Safeguards

Dangerous high voltage, bright light, ultraviolet, and infrared radiation can be hazardous to personnel. Access must remain restricted to certified engineers and technicians.

Do not unplug the power cord until after

Ultra Violet and Infrared Li ght

Protect eyes and face from ultra violet light and infrared light by using the following protective eyewear:

vi Model 100 Service Manual

Safety Information

1. X3 (up to 375 nanometers), ANSI approved, shade goggles must be

worn by anyone near the projector when it is lit and the cover is off.

2. X5 (375 to 700 nanometers), ANSI approved, shade goggles when

actually working on the projector near the arc lamp source.

WARNING, BRIGHT LIGHT!!!

Never look directly at the Arc Lamp, the lighted Projection Lens or into the lamp housing, from any distance, when the projector is on. Direct exposure to light of this brightness can cause severe eye injury.

Dangerous levels of ultraviolet and infrared radiation, dangerous glare, very high temperatures and high internal gas pressure are present at the Xenon Arc Lamp. The lamp is contained in a protective reflector housing module and should not be operated outside this housing or outside of the projector. When replacement is needed, the arc lamp must be replaced as an entire module, as shown in this manual. Do not open the lamp housing or attempt to replace the Arc Lamp inside its module! Do not touch the Arc Lamp, or any connections, when the lamp is ignited or is arcing. Any servicing of the Arc Lamp must remain restricted to Hughes-JVC certified maintenance personnel.

Electrical Safeguards

High voltage access. The front cover contains a safety interlock. Defeat restricted to certified service personnel

WARNING!!!

exposed inside the covers. Allow at least one minute for the high voltage to bleed off, even after power is turned off.

Due to high voltage danger,

CRT cables. These cables can cause severe shock from a tiny,

invisible crack or hole and should never be touched while projector

power is on.

CRT anodes.

Main power ± supply posts.

Arc Lamp main power ± posts

CRT yoke assemblies and other proximity electrical assemblies,

components and wiring. If performing the ILA® Back Focus, Overlap

High Voltage points up to 40,000 volts are

DO NOT TOUCH

Model 100 Service Manual vii

Safety Information

adjustment, always use an ANSI/ASTM 10,000 volt rated glove. Periodically check the condition of the gloves for cracks.

Power Supply

The Model 100 projector operates from a 90V - 264V, 20 Amp, single-phase, 50/60 Hz AC power source. Verify that local power source matches these requirements before operating! Installation should be performed by an electrician with current knowledge of electrical codes in the country of use.

For continued safe and reliable operation, only use cables supplied by the manufacturer for power and signal connections.

Ventilation and Foreign Object Retrieval

CAUTION!

free from obstructions and operating properly. Air filters are located at vent ports on the cover. Air filters require periodic cleaning to ensure adequate cooling of the projector ( ports are clear of obstructions.

Ensure the projector’s multiple fans are

Section 4.4

). Ensure that all vent

Keep the inside of the projector free from foreign objects, such as hairpins, nails, paper, etc. Do not attempt to retrieve any object or insert metal objects such as wire and screwdrivers inside the unit. If an object falls inside the projector, immediately unplug the projector and call a certified technician to remove object.

viii Model 100 Service Manual

1.0 Introduction

Contents

1.1 Safety........................................................................................................1-1

1.2 Updates.....................................................................................................1-1

1.3 Tool List...................................................................................................1-2

1.4 Acronyms Used in this manual ................................................................1-2

This Service Manual is designed to be used with the Model 100 User’s Guide. This Service Manual provides information on the:

Projector functional description;

Service adjustments

Removal and replacement of subassemblies;

Troubleshooting.

Chapter 1---Introduction

The User’s Guide covers the projector’s installation, operation, setup adjustments, and specifications. Together the Service Manual and User’s Guide provide a qualified service person with information to operate and maintain the projector.

1.1 Safety

This projector contains high voltages and high intensity light sources in its internal system and power supplies. Read the entire Safety Chapter at the front of this manual before performing any adjustments or maintenance.

When performing procedures that call for the projector’s power to be on, always wear high voltage gloves (ANSI/ASTM 10,000 volt rated) when working around the CRTs, Arc Lamp or power supplies. Wear safety goggles (rated X5) when working anywhere near the light path from the Arc Lamp or the projection lens at all times.

1.2 Updates

Hughes-JVC will periodically provide Service Bulletins and /or manual supplements to ensure the accuracy of this service manual.

Model 100 Service Manual 1-1

Chapter 1---Introduction

1.3 Tool List

The following tools are required to perform service adjustments: All Purpose Tools=Diagonal Sidecutters, Wirestrippers, Slot Adjustment

Screwdriver (Tweeker), Mirror/Magnet Pick-Up Tool, Flashlight, 6” Crescent Wrench, Needlenose pliers, 6” Vise Grips

Balldriver, 1.5mm Balldriver, 3mm Balldriver, 3mm, Long Balldriver, 4mm Balldriver, 5mm, Long, T-handle Balldriver, 6mm Balldriver, 8mm Ballpoint L-Wrench Set, 1.5-5mm Delrin .100 Hex Alignment Tool Gloves, ANSI/ASTM 10,000 volt rated, Safety Goggles, Safety, x3(covers on) and x5(covers off) Hex Ballpoint Driver, 3mm Hex Ballpoint Driver, 5mm Nutdriver, 10mm Nutdriver, 11mm (or 7/16”) Nutdriver, 5mm Nutdriver, 7mm Nutdriver, 8mm Screwdriver, Phillips, #1 Screwdriver, Phillips, #2 Screwdriver, Pozidrive, #1 Screwdriver, Pozidrive, #2 Screwdriver, Slot ¼” Screwdriver, Slot, ½” Screwdriver, Slot, 3/16” Socket, ¼” drive, 7mm-deep

1.4 Acronyms Used in this manual

ALPS Arc Lamp Power Supply CDB Convergence/Deflection Board CH Channel CPU Central Processing Unit CRT Cathode Ray Tube DP PCB Deflection Processor Printed Circuit Board EMI Electromagnetic Interference EPROM Erasable Programmable Read-Only Memory FPGA Field Programmable Gate Array F to V Frequency to Voltage G

1-2 Model 100 Service Manual

CRT Grid 1

Chapter 1---Introduction

CRT Grid 2 HD PCB Horizontal Deflection Printed Circuit Board Hz Hertz HSYNC Horizontal Sync VCD PCB Vertical Convergence Deflection Printed Circuit Board HVPS High Voltage Power Supply IIC Inter-Integrated Circuit

ILA

Image Light Amplifier I/O Input/Output I/R Infrared kHz Kilohertz LED Light Emitting Diode LVPS Low Voltage Power Supply PC Personal Computer PCB Printed Circuit Board PLL P hase Lock Loop RAM Random Access Memory REG PCB Regulator Printed Circuit Board RGB Red, Green and Blue RGBHV Red, Green, Blue, Horizontal, Vertical ROM Read Only Memory SC/RTG PCB System Controller/ Raster Timing Generator Printed

Circuit Board SYNC Synchronization TTL Transistor-Transistor Logic UL Underwriter Laboratories UV Ultraviolet VA PCB Video Amplifier Printed Circuit Board VCO Voltage Controlled Oscillator VIC Video Input Card VIN Video Input VP PCB Video Processor Printed Circuit Board VSYNC Vertical Sync

Model 100 Service Manual 1-3

Chapter 1---Introduction

1-4 Model 100 Service Manual

2.0 System Description

Contents

2.1 Introduction.................................................................................................. 2-1

2.2 Optical System ............................................................................................. 2-2

The Arc Lamp Module............................................................................... 2-2

The Illumination Path................................................................................. 2-2

CRT \ ILA

Front Projection Lens................................................................................. 2-8

2.3 Electronics System....................................................................................... 2-9

General Description.................................................................................... 2-9

Power Supplies........................................................................................... 2-10

Video Input Cards (VIC)............................................................................2-15

Video Processor PCB................................................................................. 2-24

System Controller/ Raster Timing Generator PCB.................................... 2-28

Deflection Processor PCB.......................................................................... 2-35

Vertical Convergence Deflection PCB.......................................................2-38

Horizontal Deflection PCB ........................................................................ 2-41

Regulator for three CRTs........................................................................... 2-44

Video Amplifier PCBs............................................................................... 2-46

Backplane PCB .......................................................................................... 2-49

Module................................................................................... 2-6

Chapter 2---System Description

2.1 Introduction

The Model 100 Projector consists of assemblies and components, which are grouped into the three main sections listed below. Included in each of the sections is a list of the main components found in that section and a brief description of their function (see Figure 4-1 for physical locations of assemblies and components).

The Optics Assembly Section sits toward the front of the projector. It consists of an Arc Lamp Module, the Illumination Path, the CRT/ILA Modules and the Front Lens. The Arc Lamp Module provides the 750 Watt high intensity light source for the projected image. The illumination path consists of optics that filter, polarize, separate the beam into red, green, and blue light and direct it to the ILA® and then to the Front Lens Assembly. The ILA® \CRT Modules supply the image and modulate the light to create the projected image. The Front Lens sends the image to the screen.

Model 100 Service Manual 2-1

Chapter 2---System Description

The Power Supply Section consists of three power supplies: the Arc Lamp Power Supply, the Low Voltage Power Supply and the High Voltage Power Supply. The Arc Lamp Power Supply supplies constant adjustable current to the arc lamp. The High Voltage Power Supply drives the CRTs with anode voltage, G Low Voltage Power Supply provides the standby voltages and bias voltage for all the digital and analog circuits. It also supplies the CRT filament voltage and some supply voltages for the Horizontal Deflection PCB, and the Video Amp PCBs.

The Projector Electronics Section is located mainly in the back half of the projector. It consists of the Electronics Module that houses 6 of the electronics printed circuit boards used in the projector, and their associated cabling. It also contains the Backplane PCB which is used to electrically interconnect the printed circuit boards, power supplies and other units in the projector, the Video Amp PCBs and Regulator PCB, and the Video Input Cards that interface with different kinds of input signals.

2.2 Optical System

voltage, the focus voltage and the G1 voltage. The

The Arc Lamp Module

The Arc Lamp Module includes a 750-Watt Xenon Arc Lamp that is located directly below the Front Projector Lens in the front of the projector. The Arc Lamp is driven by the Arc Lamp Power Supply, which sits in the front of the projector opposite the Arc Lamp Module.

The Illumination Path

The illumination path is a very complex optical system of condensing lenses and integrator lenses, reflective steering mirrors and Dichroic Filters, polarizing optics, beamsplitters and combining prisms (see Figure 2-1 for physical layout). The illumination path actually consists of two sections: the light path and the image path. The light path begins with a light source, the Arc Lamp, then passes through Primary Condensing Lens and is reflected off the #1IR Filter/Cold Mirror where the infrared heat radiation is filtered out.

CAUTION!

mirror passes infrared light and its reflection contains only "cold' light that does not transmit appreciable heat. As a result of the absorption of infrared heat radiation, "cold" mirrors can get very hot.

The term "cold mirror" is used because the

From the #1 Cold Mirror the high intensity light passes through the Secondary Focusing Lens, a UV Filter and into the Integrator, which consists of two “fly’s eye” integrating lenses. The Primary Condensing Lens collects all the light from

2-2 Model 100 Service Manual

Chapter 2---System Description

the Arc Lamp and begins to bend the light rays into a straight path. The Secondary Focusing Lens works with the Primary Condensing Lens to collimate or “straighten” the light path before it enters the Integrator. The UV Filter filters out unwanted ultravioltet light.

After leaving the UV Filter the light passes through the Integrator. The function of the Integrator is to spread out the beam so that it will have a more uniform distribution of light across the face of the ILA®. This will result in a more uniform image on the screen. After leaving the Integrator the white light is reflected off the #2 IR Filter/Cold Mirror where more IR light is removed. The white light then travels out to the Secondary Condensing lens and onto the Dichroic Filters.

The Dichroic Filters divide the white light from the Arc Lamp into its three color components, Red, Green and Blue. The first filter reflects the green and red light and allows the blue light to pass through the beamsplitter and continue on to the Blue Dichroic filter. The red and green light travel on to a second Dichroic Filter where the red light is separated from the green light. The Blue Dichroic Filter Mirror reflects the blue light into a Feedthru Beamsplitter. The red light is also reflected from a Dichroic Filter into a Feedthru Steering Mirror and the green light is transmitted through the beamsplitter into its respective Feedthru Beamsplitter. All three light beams are reflected up into the Polarizing Beam Splitter.

Model 100 Service Manual 2-3

Chapter 2---System Description

Figure 2-1

2-4 Model 100 Service Manual

Top View of lower level of Illumination Path for the Model 100.

Chapter 2---System Description

The Polarizing Beam Splitter (PBS) actually consists of a Pre-Polarizer and a main Polarizer. The process of polarizing light is discussed in the following paragraph.

Light can be viewed as having two electromagnetic components: a S-electric field and a P-electric field. These fields are perpendicular to each other. When unpolarized light travels through a polarizing beamsplitter one of these fields is reflected and one is transmitted or passes through the beamsplitter. Upon striking the Pre-Polarizer, the S-electric field is reflected and is wasted, the P-electric field is passed through the Pre-Polarizing Beamsplitter and continues on to the Main

Polarizer. The Main Polarizing Beamsplitter is rotated 90

from the Pre-Polarizing Beamsplitter so the P-electric field that was transmitted through the Pre-Polarizer becomes the S-electric field and is reflected by the Main Polarizer. The reflected polarized light, either red, green or blue, leaves the PBS and goes directly into the

ILA

device.

Figure 2-2

Side view of a Feedthru Beamsplitter and the Polarizing

Beamsplitter (PBS).

Model 100 Service Manual 2-5

Chapter 2---System Description

The polarized light from each of the PBS’s enters the ILA® and is rotated and modulated with the image signal. The amount the polarized light is rotated is controlled by the ILA® bias and the amount of CRT light hitting the input side of the ILA®, and translates directly to the brightness of the image on the screen.

The image light from each of the ILA®s is then sent back through the Main Polarizer portion of the PBS. The polarized blue image light continues on to a Turning Prism where it is reflected into the 2P Combining Prism. The red and green light come from their respective PBSs and are combined in the1P Combining Prism. From the 1P Combining Prism, the red and green image light go into the 2P Combining Prism to combine with the blue image light, where the RGB image light goes through the Front Projection Lens and out onto the screen. This completes the Illumination Path.

CAUTION!

critical. Replacement of individual mirrors or prisms requires removing the projector cover and must be performed only by Hughes-JVC Certified technicians. Consult the factory before removing or aligning any mirrors or prisms.

The alignment of system optical components is

CRT \ ILA® Module

The three CRT/ILA® assemblies are located in the main body of the projector above the Dichroic Filters and in front of the Electronics Module card cage. The red CRT is separated and perpendicular to the green and blue CRT. Two exhaust fans at the rear help cool the green and blue CRT assemblies. Each CRT is sent a red, green, or blue image signal, but they do not emit a red, green, or blue color, as in traditional CRT projectors. The CRTs are not used as a primary light source. The light output to the screen is the function of the Arc Lamp, ILA® bias, and CRT output. The purpose of the CRT is to generate an image and to control the amount of modulation the ILA® assemblies introduce on the light coming from the Arc Lamp. The Red, Green, and Blue image signals are routed to the CRTs

The

from the Video Amplifier Board through the CRT socket connectors. image passes through a thin fiber-optic coating on the CRT face and another fiberoptic on the back surface of the ILA

®.

There is a thin layer of optical fluid between the two fiber optic coatings. The input and output sides of the ILA assembly are isolated from each other electrically and optically but are coupled electrostatically.

At the same time the image is received at the input side of the ILA

side of the ILA® is receiving high intensity polarized light from the arc lamp through the PBS. This high intensity polarized light is modulated by the image from the CRT and the light polarization is rotated (90° at 100% CRT output) by the liquid crystal on the output side of the ILA®. The light is then reflected back

CRT

, the output

2-6 Model 100 Service Manual

Chapter 2---System Description

from the output side of the ILA®, and travels through the 1 and 2 Combining Prisms (red and green). The blue polarized image light goes through the Turning Mirror and combines with the red and green light in the #2 Combining Prism to be picked up by the projection lens.

Figure 2-3

Model 100 Service Manual 2-7

Overhead view of top-level optical path.

Chapter 2---System Description

Front Projection Lens

The Front Projection Lens picks up the high intensity image from the 2P Combining Prism and transmits it to the projector screen. The Front Lens options are:

Zoom Lens with a 3:1 to 8:1 range

1.5:1 Fixed Range Lens with a variable offset that can be set to 50% of screen height above or below the centerline of the screen

1.1:1 Fixed Range Lens

WARNING!!!

The Xenon Arc Lamp produces high

intensity white, ultraviolet and infrared light capable of severe eye injury.

Never look directly at or touch the Xenon Arc Lamp. Service should be performed by Hughes-JVC certified

technicians only.

2-8 Model 100 Service Manual

Chapter 2---System Description

2.3 Electronics System

General Description

The Model 100 Electronics System includes nine printed circuit assemblies. They provide all the controlling voltages and signals to adjust and correct picture settings, geometry, convergence, and shading (see Chapter 4 of the User’s Guide). The Electronics System also controls video and sync input signals, LED displays on PCBs on the side of the projector, two RS-232 communications ports, and two IR receivers for remote control of the projector.

The descriptions in this portion of the manual are based on an overall Electronics System block diagram and simplified block diagrams for each of the nine printed circuit assemblies. The diagrams and descriptions serve two purposes; first, to provide the technician with an overall grasp of how the system works and how each assembly works with other assemblies in the system, second, to provide the technician with enough information to troubleshoot to the assembly level, if needed.

Figure 2-2 provides an overall System Block Diagram to show how the Optical System, Arc Lamp, and Electronics System combine to provide the bright screen image.

RGBVH

RS-232C / 422

IR RECEIVE

90-264 AC 50 / 60 Hz

BACKPLANE

R YOKE

G YOK E

FOCUS

B YOKE

RGB / HV

Figure 2-4

Model 100 Electronics System Block Diagram.

Model 100 Service Manual 2-9

Chapter 2---System Description

Power Supplies

The Model 100 includes three power supply assemblies.

Low Voltage Power Supply

Arc Lamp Power Supply

High Voltage Power Supply

Low Voltage Power Supply (LVPS)

Main Functions:

Provides all of the analog, digital, and voltages needed by the projector.

Provides standby power when the projector is OFF.

Provides power for all cooling fans. Operation: The main power is filtered via the input filter to prevent radiation from escaping

back to the power line. From the line filter, AC power is fed into the Low Voltage Power Supply module where AC is rectified, filtered, and compensated for power factor correction.

The +5.1V Standby is on whenever AC power is connected to the projector and the circuit breaker, next to AC power connection, is in the On position. The +24V standby power for the fans turns on when the /FAN_ENA signal is received from the System Controller (this turns off in 5-8 minutes if power is not turned on by the remote control or a PC). All other voltages supplied by the LVPS are activated when power is turned on at the remote or PC. These include +5.1V for digital components, +6.2V for CRT filaments, ±15V for analog circuits, and the +80V supply which is used by the High Voltage Power Supply, Video Amplifier PCB, and the Horizontal Deflection PCB.

P76

AC INPUT

P75

1 3 5

Line Earth Neutral

LV Ret /LV_ENA /LV_OK +24v Fans +5.1v STBY +5.1v +6.2v +15V

-15v +60V /COVER_ON /FAN_ENA

1-7 8 9 10 11 12 13 14 15 16 17 18

To P8 on Backplane

Figure 2-5

LVPS Input/Output Diagram.

2-10 Model 100 Service Manual

Chapter 2---System Description

Table 2-1

Inputs and Outputs for the LVPS

Inputs

/ LV_ENA From System Controller/ RTG PCB - enables the LVPS when

the System Controller receives a Power-On command.

/ COVER ON Indicates the front cover is in place or the Interlock is in the

Service Mode. Enables the non-standby outputs. Also includes Arc Lamp Thermal Shutdown Sensor signal.

/ FAN_ENA From System Controller/ RTG PCB - enables the +24 V

Standby voltage for the projector cooling fans.

Outputs

+24V To cooling fans +5.1V +5.1 Stdby for CPU and remote operation. +6.2V For CRT Filaments +15V For analog circuitry

-15V For analog circuitr y +60V For Horizontal power Supply section of Horizontal Deflection

PCB and Video Amplifiers PCB.

/ LV_OK Feedback signal indicating to the System Cont r oller, the status

of the non-standby supply (working or not working ).

NOTE:

a “/”in front of signal name means “active low“. This means the signal

will enable a device such as the LVPS in / LV_ENA. A high = 5V and low = 0V.

The /COVER_ON signal from the cover interlock switch tells the Low Voltage

Power Supply that the front cover is in place and the interlock switch is pressed

in. The /COVER ON signal also includes the Thermal Shutdown signal that

comes from a thermocouple attached to the Arc Lamp. If the Arc Lamp exceeds

130 ± 5

C or the Interlock Switch is not pushed in (or pulled out) the Low

Voltage Power Supply shuts down the projector.

Model 100 Service Manual 2-11

Chapter 2---System Description

Arc Lamp Power Supply (ALPS)

Main Functions:

Provides a boost voltage of 150 Volts to Igniter Assembly. The Igniter

then delivers a 32 kV pulse to turn the Xenon Arc Lamp on.

Provides steady state power to maintain the lamp ON (approx. 19V at 39

Amps)

Current adjustable power supply (located on top of the power supply). Operation: The System Controller sends the /LAMP_ENA signal to the ALPS. The

/LAMP_ENA signal turns on the ALPS. The Arc Lamp Power Supply then provides the +150 VDC boost voltage to the Laser Power Supply The Laser Power Supply provides the spark gap to the Igniter Transformer (Igniter). The Igniter steps up the +150 VDC boost voltage to approximately 32KV and ignites the Xenon Arc Lamp. After the Arc Lamp is lit, it is maintained on by the ALPS at a constant 19 volts and 39 amps. The /LAMP_LIT output signal informs the System Controller if the lamp is lit or not. The Arc Lamp Power Supply is shielded electrically and magnetically to prevent noise or disturbances in the CRTs or other circuitry.

The / Cover On signal goes to the Arc Lamp Power Supply as well as the Low Voltage Power Supply. If the Arc Lamp exceeds 130 ± 5° C or the Interlock Switch is not pushed in (or pulled out) the Arc Lamp Power Supply shuts down.

P74

1 2

To Arc Lamp Igniter

P73

Jumper

Jumpered

1 2

A/C Input

To J106

Backplane

P71

AC INPUT

1 3 5

P72

To J106 Backplane

1 2 3 4 5 6

Figure 2-6

Line Earth Neutral

GND /LAMP_LIT /LAMP_OK

/LAMP_ENA /COVER_ON GND

LAMP_OUT LAMP_RET

LAMP_OK GND

Arc Lamp Power Supply, Block Diagram.

2-12 Model 100 Service Manual

Chapter 2---System Description

Table 2-2

Inputs and Outputs for the ALPS

A/C Inputs

LINE 90-132 Vac to 200-264 Vac at 50-60 Hz EARTH Ground NUETRAL Return

Inputs

/ COVER ON Indicates the front cover is in place or the Interlock is

in the Service Mode. Also includes Arc Lamp Thermal Shutdown Sensor signal.

/ LAMP ENA Signal from System Controller/ RTG to turn on Arc

Lamp Power Supply

/ LAMP OK Jumpered to ground

Outputs

ARC LAMP OUT +150 V boost voltage to Igniter t o st ar t Arc Lamp

Normal Operation: +19 Volts at 39 Amps ARC LAMP IN Arc Lamp return / LAMP LIT Feedback signal to System Controller / RTG that Arc

Lamp is lit

High Voltage Power Supply (HVPS)

The High Voltage Power Supply (HVPS) is located in front of the LVPS on the left side of projector (as viewed from rear). This supply provides the anode, focus, and screen voltages required for the three CRTs in the Model 100 projector.

The following functions are provided by HVPS:

Phase locked loop circuit for synchronization to the horizontal sync

Generation of anode voltages (15kV) for all three CRTs (RGB)

Generation of G3 focus voltage (3.5 to 4.5kV) for all three CRTs (RGB)

Generation of the G2 (supply-Black Level voltage for all three CRTs

Generation of G1 supply (Blanking) voltage

Dynamic focus amplifier using H and V parabolas

External ON/OFF and generation of /HV_OK signal

The High Voltage Power Supply I/O diagram (see Figure 2-7) and the list of inputs and outputs (see Table 2-3), provide an understanding of the operation of the HVPS to allow the technician to perform module level troubleshooting.

Model 100 Service Manual 2-13

FROM SYSTEM CONTROLLER

H VPS_SYNC

IIC CLK

IIC DATA

FROM LVPS

(VA_OK)

(

From VPB

+5V

+15V

-15

)

CN1

Chapter 2---System Description

R ANODE

5 9

HIGH VOLTAGE POWER SUPPLY

G ANODE

B ANODE

R FOCUS

G FOCUS

B FOCUS

CN5

ARC GND

G2 SUPPLY

T O

C R T S

TO REGULATOR PCB

FROM DEFLECTION PROCESSOR

H FOCUS SIG

V FOCUS SIG

CN1 IS CONNECTED TO J104 BACKPLANE CN5 IS CONNECTED TO CN201 REGULATOR PCB

CN1

G1 SUPPLY

/HV OK

Figure 2-7

High Voltage Power Supply, I/O Diagram.

The HVPS Input/Output This section provides a comprehensive description of the inputs to and outputs

from the HVPS. The I/O descriptions are arranged by the source/destination of the signal. The format used is such that the assembly communicated with is used as the primary heading of each output. Input refers to an input to the HVPS. Output refers to an output from the HVPS. In each case the signals direction is noted.

Table 2-3

Inputs and Outputs for the HVPS

Inputs

LVPS

+15V Power for analog circuitry.

-15V Power for analog circuitry.

SYST EM CONT

+5.1V Power for digital circuitry.

SC/RTG

HVPS SYNC Synchronization pulse for the HVPS, synchronized with the

selected Horiz. Sync at either same, half or on t hir d the frequency.

IIC DATA IIC data line. Bi- directional serial line for synchronous data

transfer between the SCB/RTG , the HVPS, video processing and deflection processing PCBs.

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Chapter 2---System Description

IIC CLK IIC clock line. Unidirectional clock line for control of

synchronous data transfer over the IIC bus interface.

Video Processor

/ VA OK (HV

Low enables HVPS

ENABLE)

Deflection Processor

H FOCUS SIG Horizontal focus parabola. V FOCUS SIG Vertical Focus parabola.

Outputs

SC/RTG

/HV OK High Voltage status line. Low = HVPS operating normal.

Regulator

G1 SUPPLY -75V G2 SUPPLY 1kV

Video Input Cards (VIC)

There is only one optional video input card slot on the Model 100. It is located immediately to the right of the Video Processor PCB on the right side of the projector. There are five Optional Video Input Cards that can be used with the Model 100 Projector.

RGBHV Wide-Band VIC used as a second input card.

Graphics Enhancer RGB VIC

Four-Input RGB MUX VIC used in a similar manner as a switcher.

HDTV VIC used for High Definition Television.

Quad Standard Decoder/ Line Doubler VIC used for NTSC, PAL SECAM and other composite sources.

RGBHV Wide-Band VIC

The RGBHV Wide-Band VIC has five BNC inputs. It provides the RGB and HV sync interface for the projector. This RGB VIC provides a high bandwidth interface for the three color video signals. The video signals are routed to the Backplane Board. The sync signals (horizontal and vertical) are also directly connected to the Backplane Board.

The following functions are provided by the RGB VIC:

Video and sync interface for red, green and blue

LED indication

IIC serial bus interface

Model 100 Service Manual 2-15

Chapter 2---System Description

LED indication The RGB VIC includes an LED which is illuminated when the board is selected

(i.e. when the /SEL_CH line is low) as the input for the Model 100 Projector. IIC serial bus interface section The RGBHV Wide Band VIC is controlled by the serial bus interface. The IIC bus

comes from the System Controller Board through the Backplane Board. The information transferred over the IIC bus is indicated below (I = input to the RGB VIC, and O = output from the RGB VIC). The RGB VIC does not use the interrupt line of the IIC bus interface:

RED GREEN BLUE HORIZ VERT

IIC_CLK

IIC_DATA

IIC_INT

+5.1V_STBY

+5.1V +15V

-15V

B13 A13 A12

A16

B16

B15 B14

IIC

RED_VIC

GRN_VIC

BLU_VIC H_VIC

V_VIC

B10

/SEL_VIC

12*

A1 GND A2 GND A3 GND

Figure 2-8

RGBHV Wide-Band VIC I/O.

The RGBHV Wide-Band_VIC I/O This section provides a description of the inputs to and outputs from the

RGB_VIC. The I/O descriptions are arranged by the source/destination of the signal. The format used is such that the assembly communicated with is used as the primary heading of each group of signals. Those signals are further subdivided into inputs and outputs. Input refers to an Input to the RGB_VIC, output refers to an output from the RGB_VIC.

2-16 Model 100 Service Manual

Chapter 2---System Description

Table 2-4

Projector Inputs

Inputs

RED GREEN

RGBHV Wide-Band VIC I/O signals

Description

Video input signals. about 0.7 to 1VPP

BLUE HORIZ. VERTICAL

Video Processor PCB

Outputs

/SEL_VIC RED_VIC

Horizontal or composite sync signal Vertical sync signal

Description Select line for VIC. A low indicates the RGB_VI C is selected.

Video signals. about 0.7 to 1VPP GRN_VIC BLU_VIC

H_VIC V_VIC

Horizontal or composite sync signals

Vertical sync signals

System Controller / RTG PCB

Description

Inputs

IIC_CLK

IIC clock line. Unidirectional clock line for control of

synchronous data transfer over the IIC bus interface. IIC_DATA

IIC data line. Bi-directional serial line f or synchronous dat a

transfer between System Controller/ RTG PCB and the

RGB_VIC.

Description

Outputs

/IIC_INT

Low Voltage Power Supply

Inputs

+5.1V +15V

-15V + 5.1

IIC interrupt line. RGB_VI C does not initiate an interrupt.

Description

+5.1V supply for use by RGB_VIC.

+ 15V supply for use by RGB_VIC.

-15V supply for use by RGB_VIC.

+ 5.1V standby supply for use by RGB_VIC. V_STBY

Model 100 Service Manual 2-17

Chapter 2---System Description

Graphics Enhancer RGB VIC

The Graphics Enhancer RGB VIC is the same as the RGBHV Wide-Band VIC except that it has a Graphics Enhancer chip that allows some adjustment to enhance small black text on a white background. This adjustment is discussed in section 3.18 of this manual. Refer to the RGBHV Wide-Band VIC section for inputs and outputs.

Four-Input RGB VIC

The Four-Input RGB VIC consists of four sets of RGBHV inputs and operates in a manner similar to a switcher. The four inputs are multiplexed so that only one is enabled at a specific time. Software selects the desired input channel through the IIC bus and ensures that only one RGB VIC is enabled. When one of the channels assigned to the Four-Input RGB VIC is selected, the /SEL_VIC line to the Video Processor is enabled.

RED_CH1 RED_CH2 RED_CH3 RED_CH4

GRN_CH1 GRN_CH2 GRN_CH3 GRN_CH4

BLU_CH1 BLU_CH2 BLU_CH3 BLU_CH4

HOR_CH1 HOR_CH2 HOR_CH3 HOR_CH4

VER_CH1 VER_CH2 VER_CH3 VER_CH4

IIC_CLK IIC_DATA IIC_INT

+5.1Vstby +5.1V +15V

-15V

4:1

VIDEO

MUX

and

BUFFERS

IIC

RED_VIC GREEN_VIC BLUE_VIC H_VIC V_VIC

/SEL_VIC

Figure 2-9

Four-Input RGB VIC I.O Diagram.

The same functions performed by the RGB VIC are performed by the Four-Input RGB VIC. The description of operation and pinouts are the same as the Graphics

2-18 Model 100 Service Manual

Chapter 2---System Description

Enhancer RGB VIC. One of four LEDs indicates which of the four RGB inputs is currently active.

YPbPr VIC

YPbPr is a high-end video signal standard. The HDTV YPbPr VIC converts the YPbPr component signal to a RGBHV type video signal. It contains three BNC input connectors that can be used for two different inputs, YPbPr or GBR.

The following functions are provided by YPbPr_VIC:

Video input and output buffers

Conversion of YPbPr signal format to RGB signals format

Separation of syncs from the Y/G input signal

Hue, sharpness, gamma, and color adjustment

Selection of RGB component input or YPbPr input

LED indication

IIC serial bus interface

This VIC accepts two types of video signals, color components (YPbPr) and RGB signals. In either case, the output of this VIC is RGB type signal. If the inputs are color components they will be converted to RGB type signals.

The selection between color component input mode and RGB input mode is controlled by an input. This input is controlled by the System Controller/RTG PCB via the IIC serial bus interface.

LED indication There are two LEDs on this VIC. The RGB LED is illuminated when the

YPbPr_VIC is selected and is in RGB input mode. The YPbPr LED is illuminated when the YPbPr_VIC is selected and is in YPbPr input mode. Both LEDs are off when the YPbPr_VIC is not selected as the input to projector. Only one LED can be on at one time.

IIC Interface The YPbPr_VIC is controlled by the serial bus interface. The IIC bus comes from

the System Controller Board through the Backplane Board. All required adjustments for this board are provided via the IIC serial bus interface. The information transferred over the IIC bus is indicated below (I = input to YPbPr_VIC, and O = output of YPbPr_VIC). The selection of this VIC is accomplished through the IIC control bus which provides the /SEL_VIC signal.

Model 100 Service Manual 2-19

Chapter 2---System Description

Y/G Pb/B

Pr/R

IIC_CLK

IIC_DATA

+5.1V_STBY

+5.1V

+15V

-15V

B13

A13

A16 B16 B15

B14

B2 B4

B12

RED GRN BLU

HOR

/SELECT

Figure 2-10

YPbPr VIC I/O Diagram.

The YPbPr_VIC I/O This section provides a comprehensive description of the inputs to and outputs

from the YPbPr_VIC. The I/O descriptions are arranged by the source/destination of the signal. The format used is such that the assembly communicated with is used as the primary heading of each group of signals. Those signals are further subdivided into inputs and outputs. Input refers to an Input to the YPbPr_VIC, output refers to an output from the YPbPr_VIC.

Table 2-5

Projector Inputs

Input

Y/G Pb/B

YPbPr VIC Signals

Description

Video input signals-about 0.7 to 1 VPP

Pr/R

Video Processor PCB

Description

Output

/SELECT

Selection indicator for VIC. Low indicates the selected YPbPr_VIC.

2-20 Model 100 Service Manual

Chapter 2---System Description

RED

Video signals. about 0.7 to 1 VPP GRN BLU

HOR

System Controller Board / RTG PCB

Inputs

IIC_CLK

Composite horizontal / vertical sync signal

Description

IIC clock line. Unidirectional clock line for control of synchronous

data transfer over the IIC bus inter face. IIC_DATA IIC data line. Bi-directional serial line f or synchronous data

transfer between system control board and the YPbPr _VIC. Outputs /IIC_INT

Low Voltage Power Supply

Inputs

+5.1V

Description

IIC interrupt line. YPbPr_VI C does not initiate any interrupt

Description

+5.1V supply for use by YPbPr_VIC. +15V

-15V

+ 15V supply for use by YPbPr_VIC.

-15V supply for use by YPbPr_VIC.

Quad Standard Decoder/ Line Doubler VIC

The Quad Standard Decoder/ Line Doubler VIC has two basic functions. The Quad Decoder accepts C-Vid and S-Vid signals in four different formats PAL, SECAM NTSC and 4.43NTSC and converts them to a RGBHV signal. It contains one BNC input connector for C-Video and two BNC connections for Luminance (Y) and Chrominance (C) for S-Video. The Model 100 projector does not accept sources with horizontal scan frequencies lower than 30 kHz. The Line Doubler takes scan frequencies like NTSC (~15 kHz) and doubles it to ~31 kHz, which the Model 100 can use.

The following functions are provided by the Quad Standard Decoder/ Line Doubler VIC:

Select input source - Composite or S-video

Select standard-AUTO/NTSC/PAL/SECAM/4.43NTSC

Conversion of composite and S-video signals to RGB video signals

Separation of syncs from the input signal

Doubles the Horizontal Scan Frequency

Tint, sharpness, and color adjustment

Model 100 Service Manual 2-21

LED indication of Composite or S-video

IIC serial bus interface

Chapter 2---System Description

Comp Y in

C in

IIC_CLK IIC_DATA

+5.1V +15V

B16

Figure 2-11

B13

A13

B15

Quad Standard Decoder/ Line Doubler I/O Diagram.

B2 B4

B6 B8 B10

B12

R G B /H /V

/SELECT

LED Indication There are two LEDs on this VIC. The LED on the right side of the board is

illuminated when Composite Video is selected and the LED on the left is illuminated when S-Video is selected. Only one LED can be illuminated at one time.

IIC Interface The Quad Standard Decoder/ Line Doubler VIC is controlled by the serial bus

interface. The IIC bus comes from the System Controller Board through the Backplane Board. All required adjustments for this board are provided via the IIC serial bus interface. The information transferred over the IIC bus is indicated below (I = input to YPbPr_VIC, and O = output of YPbPr_VIC). The selection of this VIC is accomplished through the IIC control bus which provides the /SEL_VIC signal.

Quad Standard Decoder/ Line Doubler VIC I/O

This section provides a description of the inputs to and outputs from the Quad Standard Decoder VIC. The I/O descriptions are arranged by the source/destination of the signal. The format used is such that the assembly communicated with is used as the primary heading of each group of signals. Those signals are further subdivided into inputs and outputs. Input refers to an Input to the VIC, output refers to an output from the VIC.

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Chapter 2---System Description

Table 2-6

Projector Inputs

Input

Composite

Quad Standard Decoder/ Line Doubler VIC Signals

Description Video input signals-about 0.7 to 1VPP

Video S-Video Y,

System Controller Board

Inputs

IIC_CLK

Video input signal-about 0.7 to 1VPP f or Luminance and about .3-.6 VPP for Chrominance (C)

Description IIC clock line. Unidirectional clock line for control of

synchronous data transfer over the IIC bus interface.

IIC_DATA IIC data line. Bi-directional serial line f or synchronous dat a

transfer between SC/ RTG PCB and the VIC.

/ IIC_SINT IIC Interrupt (Output

Low Voltage Power Supply

Description

Inputs

+5.1V +15V

-15V GND

Video Processor Board

Output

/SELECT

+5.1V supply for use by The Quad Decoder VIC. + 15V supply for use by the Quad Decoder VIC.

- 15V supply for use by the Quad Decoder VIC. Ground

Description Selection indicator for VIC. Low indicates the Quad VIC is

selected.

RED

Video signals. about 0.7 to 1VPP GRN BLU

H / C V_VIC

Horizontal Composite input signal, about 1-1. 25VPP

Vertical sync input signal to Video Processor.

Model 100 Service Manual 2-23

Chapter 2---System Description

Video Processor PCB

The Video Processor PCB (VP PCB) is the bottom-most card (see Figure 4-10) in the card cage. It is connected directly to the Backplane board through 2 connectors. When an external signal is being received, the VP-PCB provides Horizontal Sync, Vertical Sync, and Green Sync signals to the System Controller / Raster Timing Generator (SC/RTG) Printed Circuit Board (PCB). It also provides three primary color signals, and G2 Control, and DC RESTORE signals to the Video Amplifier PCBs (VA PCBs).

The following functions are provided by the VP PCB:

Video signal input and multiplexing

Sync signal stripping

Overlay signal multiplexing

Brightness and Contrast control, and DC RESTORE

On-screen Switching

Video signal gamma correction

Sensitivity and Threshold signal input and control

Automatic CRT Protection by limiting Contrast Amplifiers.

The Video Processor I/O diagram and the list of inputs and outputs provide information to allow the technician to perform module-level troubleshooting.

2-24 Model 100 Service Manual

Chapter 2---System Description

Figure 2-12

Video Processor I/O This section provides a comprehensive description of the inputs to and outputs

from the Video Processor PCB. The I/O descriptions in Table 2-7 are arranged by the source/destination of the signal. The format used is such that the assembly communicated with is used as the primary heading of each group of signals. Those signals are further subdivided into inputs and outputs. Inputs refers to an input to the Video Processor PCB, while output refers to an output from the Video Processor PCB.

Table 2-7

Video Processor I/O signals

Video Processor I/O Diagram.

Video Processor PCB

2.4 Input

Description

+15V Power for analog circuitry.

Model 100 Service Manual 2-25

Chapter 2---System Description

Video Processor PCB

-15V Power for analog circuitry. +5.1V Power for digital circuitry.

SC/RTG

Red Sens. Sensitivity correction information for Blu. Real time data at

0 volt to 1 volt. Grn Sens. Similar to Red Sens. Blu Sens. Similar to Red Sens. Red Thres. Threshold correction information for blue. Real time data at

0 volt to 1 volt. Grn Thres. Similar to Red Thres. Blu Thres. Similar to Red Thres. Red Over Red signal of on-screen menu and/or internal test pat t er n. Grn Over Similar to Red Over. Blu Over Similar to Red Over. Overlay Overlay control signal. IIC DATA IIC data line. Bi- dir ectional serial line for synchronous data

transfer between the SCB/RTG , HVPS, video processing and deflection processing PCBs.

IIC CLK IIC clock line. Unidirectional clock line for control of

synchronous data transfer over the IIC bus interface.

IICS IRQ Interrupt line.

Video Processor PCB

BLANKING Blanking signal composed of right, left, t op and bottom

blanking. CLAMP A negative-going video clamp sig nal with about 3 % dut y

cycle.

Video Amplifier PCB

/Red VAMP_OK Signal from the Regulator that the Red Video Amplifier is

working. /Grn VAMP_OK Similar to Red VA OK. /Blu VAMP_OK Sim ilar to Red VA OK. Red Beam Voltage signal proportional to cathode current averaged

over several horizontal lines in the red CRT. Voltage level

is + mV/mA.

2-26 Model 100 Service Manual

Chapter 2---System Description

Video Processor PCB

Grn Beam Similar to Red Beam . Blu Beam Similar to Red Beam.

Video Input Card

/Sel VIC Input signal from RGB VIC that is used to select input video

source. V VIC Vertical sync input signal from VIC. H/C VIC Horizontal Com posite input signal. Red VIC Red video input from VIC. Grn VIC Green video input from VIC. Blu VIC Blue video input from VIC. /VA OK (HV

ENABLE)

After signal is received that the Video Amplifiers are functional, this signal is sent t o enable the HVPS.

Outputs

Video Amplifiers

Red Video Red video output . 0 Volt to 1 Volt. Grn Video Similar to Red Video. Blue Video Similar to Red Video. Restore DC Restore control signal.

SC/RTG

Grn sync Input vertical sync.

H sync Input Horizontal or composite sync.

V sync Sync on green signal that is stripped from t he green video. /IIC Sint IIC interrupt line.

Regulator

Red G

Red CRT G2 voltage adjust control signal.

Grn G

Similar to Red G2. Blu G2 Similar to Red G2. / Video Ok Signal sent to Regulator and Video Amplifier that a video

signal is present at the VIC.

Model 100 Service Manual 2-27

Chapter 2---System Description

System Controller/ Raster Timing Generator PCB

The System Controller/ Raster Timing Generator (SC/RTG) is located in the electronic card cage (see Figure 4-1).

The Electronics System is controlled by the SC/RTG PCB. The SC/RTG PCB uses digital and analog circuits to direct the operation of image and raster generation circuits and to control the input/output of power supply operation. The SC/RTG can be viewed in two sections: the System Controller section and the Raster Timing Generator section

The System Controller section sets the operating parameters of the image, such as brightness and contrast. It also produces internal test patterns and generates onscreen display overlays. The SC/RTG PCB sets the timing for the raster generation to adjust phase, geometric corrections, shading corrections, and convergence. The program memory and the memory for all convergence and shading maps are located on the SC/RTG PCB.

The following functions are performed or controlled by the System Controller section of the System Controller / Raster Timing Generator PCB:

Enables control for the Low Voltage Power Supply, Arc Lamp and cooling fans.

Fault monitors the HVPS, LVPS, Arc Lamp, and fans and most of the other PCBs.

Provides interface communication via the IIC serial bus.

Controls Zoom and Focus of the Projection Lens.

IIC Interface control

Provides Video Overlays such as Menus and Internal Test Patterns

X and Y convergence control

Threshold and Sensitivity for shading

I/O control

Two RS-232 serial interface ports

Infrared (IR) remote control interface. Accepts input from front or rear IR detectors.

A 5-wire JTAG interface port for CPU emulation support.

External 3 color system status LEDs. Green indicates normal, yellow is standby and red indicates a fault condition.

External Service Mode Switch (see Figure 3-12). Pressing this switch while turning on Circuit Breaker allows the technician to get into the Buffer Memory. This allows the loading of new operation software and boot manager.

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Chapter 2---System Description

System Reset Switch. Resets the entire projector must be turned back on. No data loss.

Front Lens control (Focus, Zoom, and Memory Position).

ILA® Shutter control.

CCD Camera control for Autoshading (future use).

The following functions are performed or controlled by the Raster Timing Generator section of the System Controller / Raster Timing Generator PCB:

Provides the ability to handle sources with the following horizontal and vertical scan frequencies

Horiz. (30-135 kHz)

Vert. (50-150 Hz)

Selects the proper sync from the source (Separate H&V, Comp sync, and SOG).

Removes the serration and equalization pulses from the Composite. and Sync On Green syncs.

Generates the back porch clamping signal.

Detects Non-interlaced and Interlaced sources.

Separates horizontal and vertical syncs and provides horizontal and vertical phase adjustment.

Generates blanking signals (left, right, top, and bottom).

Provides internal sync generation

Provides timing signals used by the System Controller section, and the Horizontal and Vertical Deflection areas.

Model 100 Service Manual 2-29

Chapter 2---System Description

The SC/RTG I/O diagram (see Figure 2-13) and the list of Inputs and Outputs (see Table 2-8) provide information for the technician to perform module-level troubleshooting.

Figure 2-13

I/O Diagram of System Controller section of SC/RTG PCB.

IIC Interface Communications are performed through the IIC bus to the other PCBs in the

system. This three-wire bus interface consists of clock line, data line and interrupt line. The System Controller PCB controls the IIC bus and tells the other PCB when to send and receive data over the IIC bus.

System Controller / Raster Timing Generator Input/Output This section provides a description of the inputs to and outputs from the SC/RTG.

The I/O descriptions are arranged by the source/destination of the signal. The format used is such that the assembly communicated with is used as the primary heading of each output. Input refers to an input to the SC/RTG, output refers to an output from the SC/RTG.

2-30 Model 100 Service Manual

Chapter 2---System Description

Table 2-8

System

System Controller/ RTG PCB input/output signals

Controller

/Raster Timing Generator PCB

Inputs

LVPS

+5.1V Stdby Standby voltage for microprocessor contr ol and r emote

+15V Power for analog circuitry.

-15V Power for analog circuitry. /LV OK Feedback signal from t he LVPS t hat it has powered up.

HVPS

HV OK High Voltage status line. Low = operation HVPS.

ALPS

/LAMP OK /LAMP LIT Signal from ALPS that t h e Ar c Lamp is lit.

Video Processor

Description

operation.

Jumpered (not used).

V Sync Input vertical sync. H Sync Input Hor izontal or com posit e sync. Grn Sync Sync on grn signal that is stripped from the green video.

Misc.

/FRONT IR Input signal from Front IR Detector. /REAR IR Input signal from Rear IR Detector. LENS POS CCD LINE Power to CCD AST camera. CCD DATA Data from CCD AST camera.

Outputs

LVPS

/LV ENA Signal to enable the LVPS. /FAN_ENA Signal to enable the 24V standby power.

Model 100 Service Manual 2-31

Chapter 2---System Description

System Controller/Raster Timing Generator PCB

HVPS

Synchronization pulse for the HVPS, synchronized wit the

HVPS SYNC

ALPS

/LAMP ENA Enables the ALPS power.

Video Processor

OVERLAY Overlay control signal. Red_Over Red signal of on-screen menu and/or internal t est pattern. Grn_Over Similar to Red_Over. Blu_Over Similar to Red_Over.

selected Horiz. Sync at either same, half or on t hir d the frequency.

Blu_Thres Grn_Thres Similar to Blu_Thres.

Red_Thres Similar to Blu_Thres. Blu_Sens Grn_Sens Similar to Blu_Sens.

Red_Sens Similar to Blu_Sens. BLANKING Blanking signal composed of right, left , top and bottom

CLAMP A neg at ive-g oing video clamp signal wit about 3 % duty

Vertical Convergence Deflection

X_Red Conv

Threshold correction information for blue. Real time data at 0 volt to 1 volt.

Sensitivity correction information for Blu. Real time data at 0 volt to 1 volt.

blanking.

cycle.

Red X convergence waveform. The amplitude for full scale correction is about 1 VPP.

Grn X convergence waveform. The am plitude for full scale correction is about 1 VPP.

X_Red Conv

Y_Red Conv

Y_Grn Conv

2-32 Model 100 Service Manual

Blue X convergence waveform. The amplit ude for full scale correction is about 1 VPP.

Red Y convergence waveform. The amplitude for full scale correction is about 1 VPP.

Grn Y convergence waveform. The amplit ude for full scale correction is about 1 VPP.

Chapter 2---System Description

System Controller/Raster Timing Generator PCB

Y_Blu Conv

Deflection Processor

CORR SYNC

V DRIVE

Horizontal Deflection

H DRIVE H BAND:0 Horizontal frequency band lines.

H BAND:1 Band A = 00, Band B = 01, Band C = 11. /H ENABLE Low = enabled deflection and high = disabled deflection. H_F2V A DC voltage proportional to horizontal frequency.

CCD Camera

CCD_EXP Signal to CCD Shading camera to control shutter

Blue Y convergence waveform. The amplitude for full-scale correction is about 1 VPP.

Square wave HCT level synchronous signal for Horiz. Axis.

Square wave negative going pulse synchronized to the selected vertical sync with a pulse width of about 4 horizontal periods.

Square wave 50 % duty cycle synchronized to the selected horizontal sync.

exposure time. CCD_CLK Clock pulse for CCD Shading camera. CCD_ZOOM Signal to CCD Shading camer a for zoom control. CCD_FOCUS Signal to CCD Shading camera for focus control. CCD_IRIS Signal to CCD Shading camera fo r aper ture control.

Front Lens

LENS_ZOOM Signal to lens zoom motor. LENS_FOCUS Signal to lens focus motor.

Shutters

Red Shutter Signal to actuate the Red Shutter Motor. Grn Shutter Signal t o act uat e the Green Shutter Motor. Blue Shutter Signal to actuate t he Blue Shut ter Motor.

IIC

/IIC_SINT IIC interrupt line.

IIC data line. Bi-directional serial line f or synchronous dat a

IIC_DATA

transfer between the SCB/RTG and t he Horizontal Deflection PCB.

Model 100 Service Manual 2-33

Chapter 2---System Description

System Controller/Raster Timing Generator PCB

IIC_CLK

IIC clock line. Unidirectional clock line for control of synchronous data transfer over the IIC bus interface.

Raster Timing Generator Section

Horizontal frequency band selection and LED logic. The RTG section produces a voltage that is proportional to the horizontal

frequency, which is used by the Horizontal Deflection PCB, and the phase locked loop (PLL) section of the RTG board. This DC voltage is used to create the following frequency bands:

Band A: from 30 kHz to 45 kHz. Band B: from 45 kHz to 90 kHz Band C: from 90 kHz to 135 kHz

These bands are outputted through the IIC interface to be used by the System Controller Board. Backplane Board. The Horizontal Deflection Board uses these lines for proper selection of retrace times.

2-34 Model 100 Service Manual

Chapter 2---System Description

Figure 2-14

Output The RTG will disable the Horizontal Deflection Board by placing a high on the

/H_ENABLE line during any of following events:

Deflection Processor PCB

The Deflection Processor PCB is the circuit board directly above the System Controller/ Raster Timing Generator in the Electronics Module card cage (see figure 4-10). The following functions are performed by or controlled by the Deflection PCB:

I/O diagram of Raster Timing Generator section of SC/RTG PCB.

A. During and about 2 seconds after the programming period of the FPGA.

B. During frequency band change period.

C. During the period that the phase locked loop is out of lock.

Controls the ILA® Bias and Frequency

Combines Focus and Dynamic Focus signals to one signal (Focus_sig) for both the horizontal and vertical for each color

L/R and T/B Pincushion

Model 100 Service Manual 2-35

L/R and T/B Keystone

L/R and T/B Bow

Horizontal and Vertical Linearity

Horizontal and Vertical Edge Linearity

Red and Blue Horizontal Size

Red and Blue Vertical Size

Chapter 2---System Description

Figure 2-15

I/O diagram of Deflection Processor PCB.

The Deflection Processor PCB I/O diagram (see Figure 2-14) and the list of inputs and outputs (see Table 2-9) provide information for the technician to perform module level troubleshooting.

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Chapter 2---System Description

Table 2-9

Deflection Processor input/outputs signals

Deflection Processor PCB

2.5 Input s

+15V Power for analog circuitry.

-15V Power for analog circuitry. +5.1V Power for digital circuitry.

SC/RTG

IIC_CLK IIC data line. Bi-directional serial line f or synchronous dat a

transfer between the SCB/RTG .

IIC_DATA IIC data line. Bi-directional serial line for synchronous data

transfer between the SCB/RTG .

IIC_CLK IIC clock line. Unidirectional clock line for control of

synchronous data transfer over the IIC bus interface. CORR_SYNC Square wave HCT level synchronous signal for Hor iz. Axis. V_DRIVE Square wave negative going pulse synchronized to the selected

vertical sync with a pulse width of about 4 horizontal periods.

Outputs

SC/RTG

IICS_IRQ Interrupt line. BLANKING Blanking signal composed of right, left, top and bot tom

blanking. CLAMP A negative-going video clamp sig nal wit about 3 % duty cycle. V_Sync Input vertical sync. H_Sync Input Horizontal or composit e sync. Grn_Sync Sync on grn signal that is stripped from the green video.

Vertical Convergence Deflection

RED_ROTATE Signal to rotate the image for convergence alignment. GRN_ROTATE Similar to RED ROTATE. BLU_ROTATE Similar to RED ROTAT E. X RED_SIG Red X-axis geomet r y corr ect ion data and also L/R Bow, L/R

Skew, Horiz. Edge Linearity, and width

X GRN_SIG Similar to X RED SI G except without the width signal.

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Chapter 2---System Description

Deflection Processor PCB

X BLU_SIG Similar to X RED SIG. Y RED_SIG Red Y-axis geometr y corr ection data. Y GRN_SIG Similar to Y RED SI G. Y BLU_SIG Similar to Y RED SIG. VERT. SIG Vertical sync signal

Horizontal Deflection

H_PS_INFO Horizontal sweep feedback sig nal. WIDT H Controls the green im age width. H_GEO_SIG L/R Pincushion and Keystone combined into one signal.

HVPS

H_FOCUS_SIG Horizontal f ocus par abola. V_FOCUS_SIG Vertical Focus parabola.

Vertical Convergence Deflection PCB

The Vertical Convergence Deflection PCB is the middle circuit board, above the Deflection Processor PCB and below the shorter Horizontal Deflection PCB, in the Electronics Module card cage (see Figure 4-10).

The Vertical Convergence Deflection PCB I/O diagram (see Figure 2-15) and the list of inputs and outputs (see Table 2-10) provide information for the technician to perform module level troubleshooting.

The following functions are provided by the Vertical Convergence Deflection PCB:

Horizontal raster centering for all three colors

Combines Convergence data from the System Controller/ RTG PCB with Geometry data signals (X_RGB_SIG and Y_RGB_SIG)

Scan reversal via jumper positioning

RGB Rotation

Drive for Vertical Deflection Coils

Vertical Sweep Failure (Vert_OK)

Interlock Status for all the Yoke connections

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Chapter 2---System Description

Figure 2-16

I/O diagram of Vertical Convergence Deflection PCB.

IIC Interface All adjustments for the Vertical Convergence Deflection PCB are performed by

the System Controller via the IIC serial bus interface. This three-wire bus interface consists of a clock line, a data line, and an interrupt line. The Vertical Convergence Deflection PCB does not create any interrupt and the interrupt line is not used for this application.

Vertical Convergence Deflection Board I/O This section provides a description of the inputs to and outputs from the Vertical

Convergence Deflection PCB. The I/O descriptions are arranged by the source/destination of the signal. The assembly communicated with is used as the primary heading of each group of signals. Those signals are subdivided into inputs and outputs. Input refers to an Input to the, output refers to an output from the Vertical Convergence Deflection PCB.

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Chapter 2---System Description

Table 2-10

Vertical Convergence Deflection input/output signals.

Vertical Convergence Deflection PCB

Inputs

+5.1V Power for digital cir c uit ry. +15V Power for analog circuitry. +15V Power for analog circuitry. +15V Power for analog circuitry. +15V Power for analog circuitry.

-15V Power for analog circuitry.

SC/RTG

X_Red_Conv Red X convergence waveform. The amplitude for full scale

Description

correction is about 1 VPP.

X_Red_Conv Grn X convergence waveform. The amplit ude for full scale

correction is about 1 VPP.

X_Red_Conv Blue X convergence waveform. The amplitude for full scale

correction is about 1 VPP.

Y_Red_Conv Red Y convergence waveform. The amplitude f or full scale

correction is about 1 VPP.

Y_Grn_Conv Green Y convergence waveform. The amplitude for full scale

correction is about 1 VPP.

Y_Blu_Conv Blue Y convergence waveform. The amplitude for full scale

correction is about 1 VPP.

IIC_CLK IIC data line. Bi- d ir ect ional ser ial line for synchronous data transfer

between the SCB/RTG and the Horizontal Deflect ion PCB.

IIC_DATA IIC data line. Bi-directional serial line for synchronous data transfer

between the SCB/RTG and the Horizontal Deflect ion PCB.

IIC_CLK IIC clock line. Unidirectional clock line for contr ol of synchronous

data transfer over the IIC bus inter face.

Deflection Processor

RED_ROTAT Signal to rotate the image for convergence alignment. GRN_ROTAT Similar to RED ROTATE. BLU_ROTAT Similar to RED ROTATE.

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Chapter 2---System Description

Vertical Convergence Deflection PCB

X RED_SIG Red X-axis geometry correction data and also L/R Bow, L/R

Skew, Horiz. Edge Linearity, and width X GRN SIG Similar to X RED SIG except without the width signal. X BLU SIG Similar to X RED SIG. Y RED_SIG Red Y-axis geometry correction data. Y GRN_SIG Similar to Y RED SIG. Y BLU_SIG Similar to Y RED SIG. VERT_SIG Vertical sync signal

2.6 Outp uts

/IIC Sint IIC interrupt line. VERT_OK Vert ical Sweep detect signal to Horizontal Deflection PCB

Outputs H_LOCK + and H_LOCK-: Used to shut down the switching power supply of the

horizontal deflection amplifier in the event of a loose yoke or loose scan reverse connector. This prevents the power supply section of the Horizontal/Vertical Deflection Board from operating when 1 or more yoke connectors are disconnected.

/SWEEP_OK: Shuts down the video amplifiers in the event of deflection failure (if DEFL_OK or /H_ENABLE are not present).

Horizontal Deflection PCB

The Horizontal Deflection PCB is the smaller circuit on the top of the Electronics Module card cage (see Figure 4-10). This board drives the convergence coils of the projectors.

The following functions are provided by Horizontal Deflection PCB:

Power failure detection for the +15V, -15V, and +60V

Switching for the three different Flyback modes

Processing the Horizontal Frequency to provide the Horizontal Gate Drive circuitry for timing control of the Horizontal Deflection Coil

Horizontal Drive for the Horizontal Deflection Coils

Horizontal Size adjustment

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Chapter 2---System Description

The Horizontal Deflection Input/Output diagram (see Figure 2-17) and the list of inputs and outputs (see Table 2-11) provide information for the technician to perform module level troubleshooting.

Figure 2-17

I/O diagram of Horizontal Deflection PCB.

IIC interface Adjustments for this board are performed by the System Controller via the IIC

serial bus interface. This three-wire bus interface consists of a clock line, a data line and an interrupt line. The C/D Board does not create any IIC interrupt.

The Horizontal Deflection Board I/O This section describes the inputs to and outputs from the C/D Board. The I/O

descriptions are arranged by the source and destination of the signal. The assembly communicated with is the primary heading of each group of signals. Those signals are subdivided into inputs and outputs. Input refers to an Input to the C/D Board, output refers to an output from the C/D Board.

Table 2-11

Horizontal Deflection input/output signals

Horizontal Deflection PCB

Inputs

+5.1V Power for digital circuitry. +15V Power for analog circuitry. +15V Power for analog circuitry.

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Chapter 2---System Description

Horizontal Deflection PCB

-15V Power for analog circuitry.

-15V Power for analog circuitry. + 60 V for Horizontal sweep generation + 60 V for Horizontal sweep generation

Vertical Convergence Deflection

VERT_OK Vert ical Sweep OK

Deflection Processor

WIDT H Controls the green image width. H_GEO_SIG L/R Pincushion and Keystone combined into one signal.

SC/RTG

H_DRIVE Square wave 50 % duty cycle synchronized to the selected

horizontal sync. H_BAND:0 Horizontal frequency band lines. H_BAND:1 Band A = 00, Band B = 01, Band C = 11. /H_ENABLE Low = enabled deflect ion and high = disabled deflection. H_F2V A DC voltage proportional to horizontal frequency. IIC_DATA IIC data line. Bi-directional serial line for synchronous data

transfer between the SCB/RTG and t he Horizontal

Deflection PCB. IIC_CLK IIC clock line. Unidirectional clock line for control of

synchronous data transfer over the IIC bus interface.

Outputs

/IIC_INT IIC interrupt line.

Regulator PCB

/SWEEP_O K Sweep Failure detect signal to Regulator PCB

Deflection Processor

H PS INFO Hor izontal sweep feedback signal

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Chapter 2---System Description

Regulator for three CRTs

The Regulator PCB is located just behind the Green and Blue CRTs and sits next to the Green Video Amplifier PCB. The Regulator performs the following functions:

Regulates the G2 supply from the HVPS and distributes the regulated Voltage (+900V) to each of the three Video Amplifier PCBs

Regulates the G1 supply from the HVPS and distributes the regulated Voltage (-75V) to each of the three Video Amplifier PCBs

Monitors the status of the Video Amplifier PCBs (VA_OK_1,2,3)

Monitors the status of the sweeps (/ Sweeps_OK) and shuts down the G and G2 circuits if there is a failure

Regulates the Video Amplifier Supply Voltage (+60V)

CRT Protection The Regulator PCB provides CRT protection, in three ways:

Sweep Failure Protection - If a Vertical Sweep failure is detected by the Vertical Convergence Deflection PCB, the VERT_OK signal goes high. This signal goes to the Horizontal Deflection PCB. If either the VERT_OK signal is high or there is a Horizontal Sweep failure, the /SWEEP_OK signal goes high. This signal goes to the Regulator PCB where it shuts down the G2 supply voltage.

Beamcurrent Limiting – If the Contrast or G2 is adjusted too high a BEAM signal is sent to the Video Processor PCB. The CRT beam current limit is 40µA. If the Contrast adjustment causes a CRT beam current limit the Video Processor will reduce the Contrast. If this doesn’t work, the Video Processor PCB will reduce the G2 shutdown voltage.

Video Amplifier Failure Protection – If the Video Amplifier does not receive its supply voltage REG_VP from the Regulator PCB, it sends a high / VAMP_OK signal to the Video Processor PCB. The Video Processor PCB combines the three / VAMP_OK signals from each of the three Video Amplifier PCBs and sends a / VIDEO_OK signal to the Regulator PCB. The Regulator PCB takes the / VIDEO_OK signal and combines this with a check of the incoming G1 and G2 supply voltages and sends this signal back to the Video Processor PCB as / VA_OK. The Video Processor PCB combines this signal with the CRT beam current limiting signal and to shutdown the G2 control signal going to all the Video Amplifier PCBs. A high input to any of these signals will shutdown the G

controls to all the Video Amplifier PCBs.

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Chapter 2---System Description

Table 2-12

Figure 2-18

Regulator Inputs and Outputs

I/O diagram of Regulator PCB.

Regulator PCB

2.7 Inputs

LVPS

+15V Power for analog circuitry.

-15V Power for analog circuitry. + 6.2 V CRT Filaments + 60 V Video Output drive supply

HVPS

G2 SUPPLY G2 Supply Voltage 1 kV. ARC_GND Ground G1_SUPPLY G1 Supply Voltage -75V. GROUND Ground BLANKING Blanking signal composed of right, left, top and bottom

blanking.

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Chapter 2---System Description

Regulator PCB

/SWEEP_O K Monitors sweep signals from the Video Amplifier PCB /VIDEO_OK Monitors Video Amplifier status.

2.8 Outputs

Video Processor

/ VAMP_OK Feedback signal to Video Processor.

Video Amplifier

REG_G2 + 900V TO Video Amplifier PCBs GND Ground G1 DC Bias + Blanking REG_VP Supply voltage to Video Amplifier PCB

Video Amplifier PCBs

There are three separate Video Amplifier PCBs, one each for the Red, Green, and Blue Channels. The Video Amplifier PCBs (VA PCBs) are located under the necks of each of the three CRTs. The outputs from these video amplifiers connect directly to the CRTs and provide all electrical connections to the CRTs except for the anode voltages.

The following functions are provided by VA PCB:

Amplification of video signals and driving the cathode of all three CRTs

Sensing the cathode beam current for all three CRTs

G1 regulator for all three CRTs

Blanking drive section

DC restoration for the video signals

CRT interface for focus, heater voltage and ARC ground

The Video Amplifier Board I/O diagram (see Figure 2-19) and the list of Inputs and Outputs (see Table 2-13) provide information for the technician to perform module level troubleshooting.

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Chapter 2---System Description

Figure 2-19

Video Amplifier PCB, Block Diagram.

CRT interfaces for Focus, heater voltages and ARC ground Each of the three CRTs has a socket permanently attached to the back of it. This

socket is connected to a Video Amplifier PCB by a wire harness. They provide the necessary interface for the input of the three CRTs. The Focus voltage for each color is connected directly to the socket of each CRT.

The Video Amplifier PCBs provides ARC grounds for each CRT, which are used to protect against arcing of the CRT anode supply.

IIC Interface The Video Amplifier PCBs does not use the IIC interface. All adjustments are

accomplished by the control lines coming from the Video Processor Board. The Video Amplifier Board I/O

This section provides a description of the inputs to and outputs from the Video Amplifier PCB. The I/O descriptions are arranged by the source/destination of the signal. The assembly communicated with is used as the primary heading of each group of signals. Those signals are subdivided into inputs and outputs. Input refers to an Input to the Video Amplifier PCB, output refers to an output from the Video Amplifier PCB.

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Chapter 2---System Description

Table 2-13

Video Amplifier PCB

Inputs

+15V

-15V +6.2V G

REG_VP RESTORE

Video Processor

VIDEO IN

Regulator

G2 CTRL REG_G

Video Amplifier I/O signals.

Description Power for analog circuitry

Power for analog circuitry CRT Filament voltage DC Bias + Blanking Supply voltage for Video Amplifier PCB. DC Restore after blanking

Video signal in

Control signal to adjust G +900 V to other Video Amplifier PCBs

GND

HVPS

G2 SUPPLY ARC GND

Outputs Video Processor

/ VAMP_OK

BEAM

CRT

CATHODE G

HEAT + HEAT -

Ground

G2 supply voltage = 1 kV Ground

VA PCB status line. Low = good VA PCB. High = Bad VA PCB (This signal is called /HV_ENABLE at the HVPS).

CRT beam current. Feedback t o Video Processor PCB for beam current limiting. About 1 volt per 100 UA

Video drive signal to CRT DC bias + Blanking

+ 6.2V CRT Filament Voltage Ground

ARC GND

Ground

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Chapter 2---System Description

Backplane PCB

The Backplane PCB is the interface that connects the Power Supplies, VICs, PCBs, and other components together, either through a direct connection to a connector on the Backplane or through cables to connectors on the Backplane PCB. Signals are not modified in any way by the Backplane. It serves only as an interconnecting point. Refer to Figure 2-20 for a general idea of how the projector wiring is interconnected through the Backplane PCB.

Model 100 Service Manual 2-49

Chapter 2---System Description

Figure 2-20

2-50 Model 100 Service Manual

Backplane Board Interface Block Diagram.

Chapter 2---System Description

Model 100 Service Manual 2-51

3.0 Service Adjustments

Contents

3.1 Introduction...................................................................................................3-1

3.2 Arc Lamp Adjustment...................................................................................3-5

Arc Lamp Current Adjustment.....................................................................3-5

Arc Lamp Alignment....................................................................................3-7

3.3 ILA® Back Focus..........................................................................................3-9

3.4 CRT Electronic Focus..................................................................................3-11

3.5 ILA® Overlap ...............................................................................................3-12

3.6 Front/Rear or Inverted Projection Jumper Settings.......................................3-13

Front / Rear Jumper Setting (Horizontal Scan Reverse)...............................3-13

Floor/ Ceiling Jumper Setting (Vertical Scan Reverse)................................3-15

3.7 Horizontal Size Settings................................................................................3-15

3.8 Software Updating.........................................................................................3-17

3.9 Graphic Enhancement Adjustment................................................................3-21

3.10 Cleaning Lenses, CRT, ILA® Assemblies and Mirrors................................3-22

Chapter 3---Service Adjustments

3.1 Introduction

This chapter details adjustment procedures required to maintain the Model 100. Refer to Figure 3-1 and Figure 3-2 to locate assemblies and components. A tool list, required to perform adjustments, is in Chapter 1.

CAUTION!

review the chapter on Safety at the beginning of this manual.

WARNING!!!

that require projector covers to be off,

(ANSI/ASTM 10,000 volt rated) when working near the CRTs, Arc Lamp, or power supplies. Wear safety goggles (rated X5) when working anywhere near the light path from the arc lamp or the projection lens

Before performing procedures in this chapter,

When performing procedures in this chapter

wear high voltage gloves

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Chapter 3---Service Adjustments

CAUTION!

cover removed, pull out the power interlock switch. This allows power to be applied to the projector for maintainence. Do not use the interlock switch to power-off the projector because it maintains power to the fans to cool the Arc Lamp. The power interlock switches for front cover are attached to the chassis frame.

If the projector is to be powered on with the front

3-2

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Chapter 3---Service Adjustments

Arc Lamp

Power

Supply

LVPS

Reg ulat

HVPS

CRTs

Arc Lamp

Electr onics

Igniter

Assembly

Front Projection Lens

Video

Amplifier PCB

Figure 3-1 Major components of the Model 100 Projector.

3-3Model 100 Service Manual 3-3

ILA

CRT (inside shield)

Chapter 3---Service Adjustments

Figure 3-2 View of Green and Blue CRT and ILA® Assemblies.

3.2 Arc Lamp Adjustment

Arc Lamp adjustment must be performed whenever an Arc Lamp is replaced and may be needed if the projector is heavily jarred during shipment. The Arc Lamp Adjustment consists of 2 separate adjustment procedures; Arc Lamp Current adjustment and Arc Lamp Alignment.

Arc Lamp Current Adjustment

The Arc Lamp Current Adjustment must be performed whenever the Arc Lamp Power Supply is replaced.

1. Remove the front cover.

1. Apply power to the projector and allow it to operate for a minimum of 15 minutes.

Measure the voltage across the Arc Lamp Power Supply ± output terminals

using a DVM (see Figure 3-3).

CAUTION

: Do Not place DVM leads across Igniter Terminals ± during projector power up because there is a 32 kV pulse that lights the Arc Lamp that is present across these leads during power up.

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Chapter 3---Service Adjustments

Arc Lamp

Power

Supply

Arc Lamp Output ± Terminals

Place DVM leads here

Use a clamp-on type ammeter such as AMPROBE Model AC/DC 1000, or

equivalent, and measure the Arc Lamp current around the Ignitor cable. Place the clamp-on current meter around either end of the white cable that goes from the Ignitor to the Arc Lamp and measure the current going to the lamp (see Figure 3-3).

Igniter leads

Figure 3-3 Arc Lamp current adjustment.

Figure 3-4 Zoom view of aperture on top of Arc Lamp Power Supply cover.

5. Multiply the voltage by the current. The result should be 750 ±25 watts.

6. If the result is not 750 ±25 watts, adjust the trimmer pot (see Figure 3-4) until the result is 750 ±25. If increasing the current, observe that the voltage may increase slightly.

7. Wait approximately 10 minutes, then recheck the current and voltage and make final adjustments, if necessary. Leave the front cover off to perform the Arc Lamp Alignment procedure.

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Chapter 3---Service Adjustments

Arc Lamp Alignment

Arc Lamp Alignment insures the brightest area of the Arc Lamp is in the center of the screen.

For best results, perform ILA® Back Focus procedure with 2 people. One person to

watch the screen close-up and the other to move the CRT/ ILA

assemblies back

and forth. The adjustment is factory-set but may need some touch-up in the field.

1. Remove the front cover.

2. Apply power to the projector and allow it to operate for a minimum of 15 minutes.

3. Verify that the "Shutters on Hide" box is checked in the SystemPreferences menu, then use the RGB key and the HIDE key to hide Red and Blue. This blocks the light coming from the Red and Blue ILA®s.

4. Access the "Shutters on Hide" box again from the System-Preferences menu and uncheck the box, then use the RGB and HIDE keys to hide Green. This mutes the image from the Green ILA® but leaves the Green shutter open to allow Arc Lamp light from the Green ILA

on the screen.

5. Select ILA® Bias from the System-Factory Adjustments menu. Record this

current ILA

bias level. This bias level will be returned to when this adjustment is complete. The Green value only need be recorded because Red and Blue will return to their original levels when Green is reset.

6. Use the up arrow key and adjust the ILA® bias for Green for maximum light output.

7. Measure the light output in the center of the screen using a calibrated light meter (Minolta Illuminance Meter T-1 or equivalent).

8. Loosen the 4 Phillips-head retaining screws on the top of the Arc Lamp Module (see Figure 3-5) to allow the Arc Lamp to move.

9. Turn the 5mm Hex nut on the the center screen brightness

side of the Arc Lamp Module

in the X-axis

on the screen.

. Maximize

10. When the center-screen brightness is maximized in the X-Axis, tighten the 4 Phillips-head retaining retaining screws (see Figure 3-5).

11. Loosen the 4 Phillips-head retaining screws on the side of the Arc Lamp Module (see Figure 3-5) to allow the Arc Lamp to move.

12. Turn the 5mm Hex nut on the

top of the Arc Lamp Module

back and forth(see Figure 3-5) while another person continues to monitor the center screen brightness with the light meter. Maximize the center screen brightness

in the Y-axis

on the screen.

13. When the center screen brightness is maximized in the Y-Axis, tighten the 4 Phillips-head retaining screws (see Figure 3-5).

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Chapter 3---Service Adjustments

Loos en these scre ws

X-

for

Axis

adjus

Loosen

these

screws for

Y-Axis

adjustment

Arc Lamp Module (top

Y-Axis Adjustme

Arc Lamp Module (side

X-Axis Adjustmen t

Figure 3-5 Arc Lamp X and Y-Axis adjustment screws.

14. With the center-screen brightness maximized, measure the light output at the center of the screen and each corner with the light meter to determine the screen rolloff. Screen rolloff is the gradual decrease in brightness from the screen center to the screen corners, expressed as a ratio i.e. 3:1.

15. Divide each corner brightness into the center-screen brightness. The screen rolloff should be less than 3:1 from center to corners. Each corner should be balanced evenly so that no corner is excessively brighter or darker than any other corner.

16. Recheck rolloff with the light meter again. Readjust, recheck, and readjust until a rolloff of 3:1 from screen center to screen corners is obtained

17. Loosen the 4 Phillips-head retaining screws (see Figure 3-6) to allow the Arc Lamp Module to move. Use a Phillips screw driver with a long shank to get to the 2 screws (not visible in photo in Figure 3-6) on the bottom of the Arc Lamp Module.

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Chapter 3---Service Adjustments

18. Adjust the Z-Axis to increase light output. Use either a 10mm socket or a 5mm hex wrench (see Figure 3-6).

19. When the desired light output is achieved, tighten the 4 retaining screws.

20. When proper rolloff is obtained, return the ILA® bias adjustment to the level from Step 4, and recheck the "Shutters on Hide" box.

Loosen these

screws for

Z-Axis

adjustment

(two more

screws under

Z-Axis Adjustmen

the Arc Lamp

Module)

Figure 3-6 Arc Lamp Z-Axis adjustment.

3.3 ILA® Back Focus

The ILA® Back Focus adjustment moves the CRT/ ILA® assemblies together to adjust the focal length so that the image will be focused on the screen. When using a zoom lens this adjustment allows the zoom lens’ tracking to remain focused throughout the entire range. Use the Pluge/Grey test pattern to perform this adjustment one color at a time. The procedures below perform the ILA® Back Focus for the Green lens. The first procedure is for a zoom lens. The second procedure is for a fixed lens.

To adjust the ILA® Back Focus for a Zoom Lens:

1. Remove all the covers (seeSection 4.2).

2. View the Green Channel. Hide the Red and Blue Channels.

3. Select Test Pattern #7 (the Pluge/Grey test pattern).

4. Select Projection Lens from the menu.

5. Use the up/down arrow keys to zoom the Projection Lens to smallest image.

6. Use left and right arrows to focus the projection lens to get sharply focused spacer balls.

NOTE: Spacer balls are used inside the ILA separate the layers. They are tiny, random, irregularly-shaped spots that are

Assembly to

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Chapter 3---Service Adjustments

visible (looks like pepper spray) throughout the image. Stand directly in front of the screen and look in the white areas of the image. From throw distances shorter than 4 meters, spacer balls are difficult to see.

7. Zoom the lens to the largest image.

8. Put on safety gloves (see Safety section for gloves type) then loosen the 2 Phillips screws on the Green ILA® Assembly base (or whichever lens is being focused).

9. Stick a small flat-blade screwdriver in the adjustment slot and move the ILA® Assembly back and forth until the spacer balls are in focus (see Figure 3-7).

NOTE: Do not use the zoom lens focus while performing this step.

Loosen these

screws (one on

other side of

Assembly)

ILA

Adjustment Slot

Insert flat-blade screwdriver here

Figure 3-7 ILA® Back Focus Adjustment.

10. Repeat Steps 5-9 until the spacer balls stay in focus through the entire zoom range. The spacer balls may go slightly out of focus in spots while zooming up or down, but they should be in focus at the smallest and largest images.

11. Tighten the 2 phillips on the Green ILA

12. Once the Green ILA

is properly focused, loosen the 2 ILA® screws for the

Assembly (see Figure 3-7).

Red Channel. Move the ILA® back and forth until the Red Channel spacerballs are in focus.

13. Repeat Step 12 for the Blue ILA

To adjust the ILA

Back Focus for a Fixed Lens:

1. Remove all the covers (see Section 4.2).

2. View the Green Channels. Hide the Red and Blue Channels. Select Test Pattern #7 (the Pluge/grey test pattern).

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Chapter 3---Service Adjustments

4. Put on safety gloves (see Safety section for gloves type) and loosen the 2 Phillips screws on the Green ILA® Assembly base (or whichever channel is being focused) (see Figure 3-7).

5. Manually position the Front Lens Focus Adjust at the mid position. Grasp the end of the Front Projection Lens and turn until the Adjustment Pin in the Adjustment Slot is at midpoint (see Figure 3-8).

6. Stick a flat-blade screwdriver in the adjustment slot and move the ILA

Assembly back and forth until the spacer balls are in focus (see Figure 3-7).

7. Tighten the 2 Phillips-head screws (see Figure 3-7) on the Green ILA

Assembly base.

8. Repeat Steps 4-6 above for other Red and Blue Channels as need. Be sure to hide the other 2 colors.

Adjustment

Slot

Figure 3-8 Front Projection Lens Adjust

3.4 CRT Electronic Focus

The CRT Electronic Focus is factory-set and will not normally need to be adjusted except after component replacement, maintenance, or if wide temperature variations exist between the factory and the field location. View one color at a time.

1. Select the Test Pattern #6 (the Focus test pattern).

2. Attach a non-interlaced source, approximately 31.5 kHz X 60 Hz (this makes it easier to see the raster lines).

3. Maximize the size on all three colors.

4. Hide the channels that are not being adjusted.

5. Zoom the Projection Lens to the widest angle and adjust the Projection Lens focus for the sharpest image (ensure Spacerballs are properly focused).

Adjustment pin

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Chapter 3---Service Adjustments

6. Adjust the Electronic Focus (located under the Factory Settings Menu) until the center of the H pattern at the center of the screen is as sharp as possible.

7. Adjust the Dynamic Focus (located under the Factory Settings Menu) until the edges are as sharp as possible (Dynamic Focus affects all three colors).

8. Repeat the above steps for Red and Blue.

3.5 ILA® Overlap

This adjustment positions the ILA® assemblies in their sockets so that the Red, Green and Blue images will be aligned on the screen. Adjustment should only be made once or whenever an ILA® is replaced.

To determine if this adjustment is necessary:

1. Note the value of the ILA returned to these levels when this procedure is complete.

2. Hide all three channels (make sure the shutter mode is off).

3. Increase the ILA maximum, the image on the screen should be a white screen with some colors at the edges.

bias for red, green and blue so they can be

biases to maximum for all 3 colors. With all colors at

4. Observe the right, left, top, and bottom of the screen. Normally, green is the reference to which blue and red will be matched.

NOTE: If the green ILA® has been replaced, the blue or red image should

be used as the reference to match green to. If a red or blue border is present on either side the ILA® overlap needs adjustment. If both red and blue overlap, the border will be yellow. In either case, proceed with the adjustment below. If there is no overlap, reset the ILA® biases to their previous levels from Step 1.

To perform an ILA

Overlap adjustment:

1. Remove all the covers (see Section 4.2).

2. Continue with all three colors hidden.

3. Loosen the 2 slotted screws at the top of the ILA® assembly to be adjusted (see Figure 3-9).

4. If the overlap is at the left or right, grasp the ILA® assembly and slide it to the right or left so that the edges coincide with the edges of the other two

assemblies.

ILA

CAUTION!

the ILA® assembly itself,

To avoid damaging the connector, grasp

not

the connector at the top.

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Chapter 3---Service Adjustments

Slotted screws

Figure 3-9 ILA® Assembly top view.

5. If the overlap is at the top or bottom, make sure the projector is level. If there is still excessive ILA® overlap replace the CRT/ILA®, there is no adjustment for top and bottom overlap.

6. Retighten the slotted nuts.

7. Reset the ILA® biases to their previous levels from Step 1.

3.6 Front/Rear or Inverted Projection Jumper Settings

NOTE:

purpose: CN702 and CN701 are for the horizontal scanning jumper, CN713 and CN714 are for the vertical scanning jumper, and CN708 and CN707 are for the convergence jumper.

Front / Rear Jumper Setting (Horizontal Scan Reverse)

The Horizontal Scan Reversal Jumper reverses the image projection for front or rear projection. Figure 3-13 illustrates the jumpers’ location on the Vertical Convergence Deflection PCB.

NOTE: When the Horizontal Scan Reversal Jumper is changed, the Front/Rear Convergence Jumper must also be changed.

The Model 100 Projector is shipped with the Horizontal Front / Rear jumper plug is in CN702 for front/upright projection. The Front / Rear Convergence jumper plug is in CN708. For other orientations refer to Table 3-1.

In the procedures below each of the jumpers mentioned have a specific

To change the Horizontal Scan Jumper:

1. Turn power off at the projector and wait 10 minutes for the arc lamp to cool.

Model 100 Service Manual 3-13

Chapter 3---Service Adjustments

2. Remove the Electronics Module cover (Section 4.2).

3. Verify the Horizontal Front/Rear jumper is plugged into CN702 for front/upright projection. Remove the connector from CN702 and insert it into CN701 (see Figure 3-10).

4. Verify the Front/Rear Convergence jumper is plugged into CN708. Remove the jumper from CN708 and insert it into CN707. Refer to Table 3-1 for other orientations.

NOTE: The Vertical Convergence Deflection PCB does not need to be removed from the Electronics Module to change these connections.

5. Replace the Electronic Module cover.

6. Restart the projector. When changing jumpers for front or rear screen projection, Centering,

convergence and shading must be rechecked.

Horizontal Deflection PCB

Floor/Ceiling Vertical Jumper

Front/Rear Convergence Jumper

Horizontal Scan Reversal Front/Rear Jumper

Vertical Convergence Deflection PCB

Figure 3-10 Vertical Convergence Deflection PCB

3-14 Model 100 Service Manual

Table 3-1 Projection orientation jumper settings.

Chapter 3---Service Adjustments

ORIENTATION

Front / Floor

Front / Rear

Convergence.

Jumper

CN708 CN713 CN702

Floor / Ceiling

Vertical.

Jumper

Horizontal

Scan Reversal

Jumper

Upright Front / Ceiling

CN707 CN714 CN701

Upside Down

Rear / Floor

CN707 CN713 CN701

Upright Rear / Ceiling

CN708 CN714 CN702

Upside Down

Floor/ Ceiling Jumper Setting (Vertical Scan Reverse)

The Ceiling/Floor jumpers invert the image vertically for use in some situations that use mirrors or ceiling projections. Figure 3-10 illustrates the location of the jumpers on the Vertical Convergence Deflection PCB. The Model 100 Projector is shipped in the upright vertical projection position with the jumper plug inserted into CN713. For an upside down vertical setup this jumper plug must be inserted into CN714. (see Table 3-1 for other orientations).

To invert the vertical image:

1. Turn power off at the projector and wait for the arc lamp to cool.

2. Remove the Electronics Module cover (see Section 3.2).

3. Verify that the vertical jumper is inserted into CN713 for upright vertical operation (see Figure 3-10 and Table 3-1). Remove the connector from CN713 and insert it into CN714.

NOTE: The Vertical Convergence Deflection PCB does not need to be removed from the Electronics Module to change these connections.

4. Replace the Electronic Module cover.

5. Restart the projector.

6. When changing jumpers for floor or ceiling screen projection, Centering, Convergence and Shading must be rechecked.

3.7 Horizontal Size Settings

The Horizontal Adjustment Coils are located on the front of the Horizontal Deflection PCB. These coils are used to make size. Adjust the horizontal size coils when replacing the Horizontal Deflection PCB, or CRT Assembly. These adjustments may also be needed when the convergence adjustment procedures fail to bring the colors into convergence.

coarse adjustments

for horizontal

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Chapter 3---Service Adjustments

Heat Sink

Horizontal Size Coils

Figure 3-11 Horizontal Deflection Board.

To adjust the horizontal size coils (see Figure 3-11):

1. Remove the Electronics Module cover.

2. Apply power to the projector and allow to warm up for a minimum of 15 minutes.

Heat Sink

Capacitors

CN002

CN702 / CN701

Goes to

3. Use Test Pattern #5 (the X-hatch test pattern).

4. Clear X and Y Convergence Data (Convergence Menu / Reset / Registration).

5. Set all the Horizontal Sizes to 128 (Geometry Menu / Size).

6. Hide the Blue Channel. View the Red and Green Channel.

7. If Red is outside of Green on both sides, or inside of Green on both sides, use a Delrin .100 hex alignment tool to adjust the Red horizontal size coil to correct the error. If Red is outside of Green on one side and inside of Green on the other side, this is most likely caused by Red not being centered correctly and can be corrected with the centering adjustment (User’s Guide, Chapter 5). If the Red horizontal size coil does not completely eliminate the size error between Red and Green, balance the error on both sides to allow for easier convergence.

8. Repeat Steps 2 and 3 above for Blue while hiding Red.

9. Recheck all Geometry and Convergence settings and readjust wherever necessary.

10. Replace the Electronic Module cover.

3-16 Model 100 Service Manual

3.8 Software Updating

The Model 100 software resides in Flash Memory and is updated via the projector's serial Port A. To perform an update, a disk containing the updated Boot Software (boot.hex) and/or System Software (zsys.hex) and a PC with Windows 3.1 (Windows 95/98 with Procomm Plus fax/modem software) is required to perform update.

Boot Manager Software and System Software are separate files. Each may be updated independently. The System Software will depend on a specific version of the Boot Manager. Refer to the System Software release bulletin for Boot Manager version dependencies.

To setup the PC terminal (Windows 3.1):

1. Verify that the projector circuit breaker is off. Use a Null Modem cable to connect a PC to the projector’s Serial Port A.

2. Start Windows 3.1.

3. Click on the terminal icon from the Accessories Directory.

4. From the Terminal menu, select Settings-Terminal Emulation, click on DEC-VT-100(ANSI) and select OK.

Chapter 3---Service Adjustments

5. Under Settings choose Terminal Preferences.

6. Under Terminal Preferences the following selections are appropriate;

Terminal Modes=Sound, CR->CR/LF=Both off

Columns=80, Cursor=Block & Blink

Terminal Font=Fixedsys 15, Translation=None, Show Scroll Bars=On, Buffer Lines=100

Use Function Arrow & Control Keys for Windows=Off.

7. Select OK.

8. Under Settings, select Text Transfer=Standard Flow Control. Select OK.

9. Under Settings select Communications and choose:

Connector=select the PC port being used

Baud Rate=9600 or 19200 (depending on the System Controller Switch block Pos 4-see note below this step)

Data Bits=8, Stop Bits=1, Parity=None, Parity Check=Off, Carrier Detect=Off, Flow Control=XON/XOFF

10. Select OK.

To setup the Model 100 Projector:

1. Remove the System Controller/Raster Timing Generator and

the DIPswitches are in the up position.

The switch in position 4 on the

verify that all

switch block (see Figure 3-12) controls the baud rate for Serial Port A for the Boot Manager and System Software. Up=9600, Down=19200. The switch in position 4 should be in the up position.

Model 100 Service Manual 3-17

Chapter 3---Service Adjustments

2. Reinstall the System Controller/ Raster Timing Generator PCB.

Figure 3-12 DIP Switches on SC/ RTG PCB.

3. Apply power to the projector.

4. In the Main Menu, go to System.

5. In System, go to Comm Setup.

DIP Switches

on SC/RTG

(makes sure all

the switches

are up)

6. In Comm Setup, go to Port A Device.

7. In Port A Device, go to ANSI Terminal and select OK.

8. Press ESC.

9. Power off the Projector.

10. Cycle off the A/C Main Circuit Breaker. This serves to reset the software.

11. Insert a small screwdriver into the Service Mode Switch Access hole on on the SC/RTG PCB (see Figure 3-13). Depress and hold down the Service Mode Switch. While holding down the switch, turn the projector A/C circuit breaker on.

Service Mode Switch Access Hole.

Figure 3-13 Service Mode Switch access hole.

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Chapter 3---Service Adjustments

12. Verify that "Boot Manager" appears on the terminal monitor. The Power On LED on the projector, stays Red and the cooling fans do not come on. Alternate for Step 9: In "Power Off" Standby mode, Press "Control, Shift + _ (underscore), hex "IF (international keyboard may vary in key placement).

13. The following should be displayed on the Windows Terminal screen (where x.x.0 is the currently loaded Boot Manager version (e.g. 0.9.0 or 1.1.0).

Command: _

To Update the Boot Manager:

14. Verify that the Boot Manager version is correct. If it is necessary to update the Boot Manager, perform the following steps. If the Boot Manager is already up to date, skip to Update the System Software.

15. Enter the command "loadboot" at the prompt. You should see the following output:

Command: loadboot (to update Boot Manager) <Enter> Boot Manager software update procedure ***WARNING: IMPROPER USE MAY MAKE THIS SYSTEM

UNBOOTABLE*** (This warning relates to the Flash

Memory updating that occurs in Step 11D. Do not turn projector power off while the Flash Memory is updating)

Memory buffer reset to 0xff Begin your S-Record upload now (Esc to abort).

16. From the Windows Terminal Menu (normally in Accessories window), select "Transfers/Send Text File", then select "List Files of Type:All Files", and select the disk and/or directory with the Model 100 software. You should see a file named "boot.hex". Select this file and press the OK button to begin the upload.

17. During upload, a progress indicator updates the number of records received. At the completion of the upload, the system will display the following (numerical values are for example only and depend on the Boot Manager version):

S-Records processed: 823 Upload Successful Address Range: 0x00000000-0x00006687 Bytes Loaded: 26248 ***WARNING: FLASH WILL NOW BE UPDATED*** Press Enter to continue, Esc to abort.

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Chapter 3---Service Adjustments

18. The system has verified that the load module is correct and is ready to update the Flash.

19. Press Enter to perform the update (press Esc now to abort the update with no changes). While the Flash memory is being updated (15-30 seconds),

CAUTION

DO NOT turn off the projector circuit

breaker or the machine could be made unbootable, requiring a new set of flash chips to be installed. When the update is complete, the system will display the following:

Reprogramming Flash Sector 0 1

Boot Manager software update successful

Command: _

20. The Boot software has been successfully updated. To restart the projector under control of the updated boot manager, enter the "reboot" command while depressing the service mode switch (see Figure 5-1). The projector will now restart with the updated boot manager software. (NOTE: If normal software starts, see Step 9 to reenter Boot Manager.) You should see the following displayed, where y.y.0 is the updated Boot Manager's version.

Boot Manager Ver y.y.0 (Service Mode Startup)

Command: _

To update the System Software:

21. From the Boot Manager prompt, type in the command “loadsys”. At the prompt, the following should be displayed:

Command: loadsys System software update procedure

***WARNING: IMPROPER USE MAY MAKE THIS SYSTEM UNBOOTABLE*** (NOTE: This warning relates to the

Flash Memory updating that occurs in Step 12D below. Do not turn projector power off while the Flash Memory is updating.)

Memory buffer reset to Oxff Begin your S-Record upload now (Esc to abort)

22. Select “Transfers/Send Text File” from the Windows Terminal Menu (normally in Accessories window). In the “Send Text File Dialog” box, select “List Files of Type: All Files *.*” and select the disk and/or directory with the Model 100 software. Select file named “zsys.hex”. Press OK to start upload.

23. During upload, a progress indicator updates the number of records received. When the upload is complete, the system will display the following

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Chapter 3---Service Adjustments

(numerical values are for example only and depend on the System Software version):

S-Records processed:11282

Upload Successful Address Range: 0x00020000-0x000781cf

Bytes Loaded:360912 ***WARNING: FLASH WILL NOW BE UPDATED*** Press Enter to continue, Esc to abort

24. At this point the system has verified that the load module is correct and is

ready to update the Flash memory. Press Enter to perform the update (Esc

will abort the update process with no changes). While the Flash is being

updated (approx 15-30 seconds),

CAUTION

DO NOT turn off the projector circuit

breaker, this may make the machine unbootable, requiring a new

set of flash chips to be installed. When the update is complete, the

system will display the following:

Reprogramming Flash Sector 2 3 4 5 6 7 8 9 System software update successful Command: _

The software update is complete. To restart the projector, type in the “sys” command and press Enter. The projector will now go back to the standard mode in standby, ready to power up with the updated System Software.

3.9 Graphic Enhancement Adjustment

The optional Graphic Enhancer RGBHV VIC has a very small adjustable pot (see Figure 3-14) that was designed primarily to improve the visibility of computer

black text on white background (such as spreadsheets). This pot is factory-set at mid-range to provide an appreciable enhancement of small black text on white background. HJT recommends this pot be left at the factory mid-range setting.

If it is absolutely necessary to adjust this pot to optimize a specific type of graphic image, be sure to check that other sources viewed from the Graphic Enhancer VIC are not adversely affected. This enhancement adjustment only affects computer graphics and does not appreciably affect images from VCRs, DVDs etc.

Increasing (clockwise) sharpens the appearance of black on white text but overadjustment will adversely affect other types of graphics. This is a fixed adjustment and a compromise setting may be needed for best overall performance.

Model 100 Service Manual 3-21

Chapter 3---Service Adjustments

Figure 3-14 Graphic Enhancer Video Input Card.

3.10 Cleaning Lenses, CRT, ILA® Assemblies and Mirrors

The projection lens is the only item that requires periodic cleaning. Other assemblies are covered to prevent dust entering or finger smudging. Cleaning may be needed for special circumstances such as replacing an assembly. Cleaning should only require removing excessive dust (use canned air such as “Office Duster” or "Aero Duster") or removing fingerprint smudges (use “Kodak Lens paper”, or equivalent) from the projection lens. As much as possible, clean the optics only when absolutely necessary.

Projection Lens

Use lens paper and wipe the lens clean in a vertical motion from top to bottom. Use compressed air to blow excess dust from the lens. An optical lens cleaning solution can also be used to remove finger smudges.

CRT/ ILA® Assembly

The CRTand ILA® should be treated as one unit. The CRT has a fiber optic on its output.The ILA by optical fluid. Separating the CRT and ILA® should be performed by a trained technician in a clean room environment.

also has a fiber optic on its input. These fiber optics are separated

Mirrors and Pol arizing Beam Splitter Wi ndows.

Normally cleaning is not needed. Clean only if absolutely necessary using compressed air. Do not wipe mirrors.

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Chapter 4---Maintenance (Removal/Replacement)

4.0 Maintenance (Remove/Replace)

Contents

4.1 Introduction................................................................................................. 4-1

4.2 Projector Covers.......................................................................................... 4-4

4.3 Air Filters .................................................................................................... 4-4

4.4 Arc Lamp Assembly....................................................................................4-5

4.5 Ignitor Assembly......................................................................................... 4-7

4.6 Arc Lamp Power Supply.............................................................................4-8

4.7 Low Voltage Power Supply.........................................................................4-9

4.8 High Voltage Power Supply........................................................................ 4-9

4.9 System Controller / Raster Timing Generator PCB.................................... 4-10

4.10 Video Processor PCB.................................................................................. 4-11

4.11 Deflection Processor PCB........................................................................... 4-12

4.12 Vertical Convergence Deflection PCB........................................................4-12

4.13 Horizontal Deflection PCB ......................................................................... 4-13

4.14 Video Input Cards (VICs)...........................................................................4-13

4.15 Regulator PCB.............................................................................................4-13

4.16 Video Amplifier PCB.................................................................................. 4-14

4.17 CRT/ ILA® Assembly.................................................................................4-15

4.18 Projection Lens............................................................................................ 4-17

4.19 Recommended Spares.................................................................................4-19

4.1 Introduction

NOTE:

or subassemblies, please review the Safety Chapter at the front of this manual. Removal and replacement procedures in this chapter must be performed by factory certified technicians and engineers only.

When performing any maintenance, protect yourself and the equipment by following these guidelines:

Model 100 Service Manual 4-1

Before removing the front, top or side covers or replacing any components

Turn the projector off with the remote.

After the cooling fans have automatically stopped running, turn off the

circuit breaker.

Allow a discharge time of at least one minute for the high voltage to bleed

off, then unplug the power cord from the AC wall outlet.

Observe all Cautions and Warnings

Chapter 4---Maintenance (Removal/Replacement)

Tools required to perform removal and replacement of projector components and subassemblies are listed in Chapter 1, Introduction.

Various procedures in this chapter involve

WARNING

the removal and replacement of system subassemblies. Ensure that the projector circuit breaker is turned off from the AC outlet PRIOR to attempting any of these procedures.

!!!

and

When performing any maintenance procedures in this chapter, follow the guidelines below:

the AC power plug is removed

Left/Right Orientation:

When left and right is mentioned in this chapter, it is

with reference to standing at the rear of the projector, facing the screen.

Connectors

on subassemblies and PCBs have tabs that must be released first before pulling on the connector. The proper procedure is to push slightly IN on the connector, then squeeze the tab, then pull the connector out.

NOTE:

While performing any maintenance procedures, check the optics for crazing (peeling or cracking of layers), or cracking. If any problems are observed, call the factory (800-392-9666).

When references are made in this chapter to assemblies and components, refer to Figure 4-1 for their locations.

CAUTION!!!

It is very strongly recommended that setup data be downloaded (Exported, see Model 100 Data Import/Export Procedure section A-1) before performing any of the following procedures. Exporting baseline source setup data to disk is an excellent precautionary measure. It will save the time of having to re-setup a new source file (s) in the case of an unexpected problem.

4-2 Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

Electronic

card cage

Arc Lamp

Module

Igniter

Assembly

Module

CRT/ ILA Assembly

Figure 4-1 Major Components.

High Voltage

Power Supply

Low Voltage

Power Supply

Arc Lamp

Power Supply

Model 100 Service Manual 4-3

Chapter 4---Maintenance (Removal/Replacement)

4.2 Projector Covers

Prior to removing any of the four covers, review the chapter on Safety and adhere to all warnings and cautions.

Figure 4-2

To remove the front, top or side covers:

1. Disconnect the projector power plug.

2. The two side covers can be removed independently of any other cover.

They are removed by unscrewing six Phillips-head screws. There are two small cables connecting the side covers to the top cover. The purpose of these cables is to hold the side covers and allow them to flip over, out of the way, for projectors mounted upside down in the ceiling. These cables can be unclipped when removing covers for floor mounted projectors.

3. The front cover can also be removed without removing any other covers. It

also has two retaining cables. It can be removed by unscrewing three Phillips-head screws, one on top and one on each side.

NOTE:

Switch (see Figure 4-2). To operate the projector with the Front Cover removed, pull the Interlock Switch out.

4. The top cover can be removed only after all the other covers have been

removed. After the front and side covers have been removed, there are two additional screws in the center to be removed. After the screws are removed, Slide the cover forward and lift and the cover will come off.

When the Front Cover is removed, it disengages the Interlock

Front Cover Interlock Switch.

5. Replace the covers in reverse order.

4.3 Air Filters

There are 2 air filters in the Model 100. They should be checked and cleaned whenever necessary. Both filters can be easily removed for periodic cleaning by sliding the filter element out of it’s tray. In extremely dusty or dirty conditions, the

4-4 Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

filters should be cleaned more frequently. To clean the filters, remove, vacuum out or blow the filters with compressed air.

One filter is a foam filter located in the rear of the projector.

The other filter is located on the on the bottom left side of the projector, just in front of the HVPS.

Figure 4-3

Air Filter (bottom left side).

4.4 Arc Lamp Assembly

The Arc Lamp Assembly consists of a Xenon Arc Lamp, a Docking Module, a light shield and an Arc Lamp cooling duct. The Arc Lamp fits inside the Docking Module.

CAUTION!:

current be turned down ( Lamp to help prevent possible damage that could reduce the life of the new lamp.

WARNING!!!

projector. Before proceeding with the removal of any subassemblies below, always:

see Section 3.1

It is strongly recommended that the Arc Lamp

) before installing a new Arc

Dangerous light exists in this area of the

Turn the projector off, allow the projector to cool for 5 minutes.

Power off the main ac circuit breaker at the front right corner of the projector

Remove the power plug from the AC outlet.

To remove the Arc Lamp Docking Module:

Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

1. Remove the front cover (see Section 4.2).

2. Disconnect Heat Sensor cable.

3. Remove the 2 Phillips-head screws from the light shield on the left side of

the Arc Lamp Module and carefully remove shield. The top screw can just be loosened.

Arc Lamp

Light Shield

Arc Lamp

Horizontal

Adjustment

screw

Arc Lamp

Housing

clamp

screws

Arc Lamp

Docking Module

Arc Lamp Air

Duct

Arc Lamp

Docking Module

Mounting Bolts

(circled)

Figure 4-4

Arc Lamp Module with air duct and light shield.

4. Disconnect the Arc Lamp cooling fan cable.

5. Loosen the screw on the bottom of the Arc Lamp cooling duct and remove

the top screw. Lift and slide the air duct out.

6. Remove the 4 mounting bolts that secure the Arc Lamp Module to the

projector (see Figure 4-4).

7. Carefully slide the Arc Lamp Docking Module Assembly out.

8. To replace the Arc Lamp, the lamp must be removed from the Docking

Module.

9. Once the Docking Module is removed from the projector, remove the 4

Arc Lamp Housing Phillips-head clamp screws, two on the top and two on the side of the Arc Lamp Housing.

10. Remove and retain the Heat Sensor from the Arc Lamp.

NOTE:

The Thermal Sensor attached to the Arc Lamp must be removed

from the old Arc Lamp and installed on the Anode of the new Arc Lamp. Do not allow it to be shipped with the old Arc Lamp. If the Thermal Sensor is not installed properly, the Arc Lamp will not light.

11. Remove the two Connector Plugs (see Figure 4-5) using a slotted

screwdriver. The Arc Lamp should be loose now and slide out.

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Chapter 4---Maintenance (Removal/Replacement)

NOTE:

Docking Module with the Arc Lamp.

12. Reinstall the Arc Lamp into Arc Lamp Docking Module and the Docking

Module into the projector in the reverse order from above.

13. After reinstalling the Arc Lamp, perform the Arc Lamp adjustment

procedure as shown in Chapter 3.

the Arc Lamp with your bare fingers. Oil from your skin will damage the optic and cause the Arc Lamp to fail.

The old Arc Lamp is returned to factory. Do not return the

CAUTION!:

Do not touch the front glass window on

Figure 4-5

Arc Lamp Module Power Terminals (Arc Lamp

removed from projector).

4.5 Ignitor Assembly

The Igniter Assembly consists of the Igniter and the Laser Power Supply. When either of these two components require replacing, the Ignitor Assembly is returned and replaced as a unit. The Igniter sits directly underneath the Arc Lamp Module.

To remove the Ignitor Assembly:

1. Remove the front cover (see Section 4.2).

2. Disconnect the Arc Lamp ouput cables from the ALPS (see Figure 4-7).

3. Disconnect and label the cables attached to the Ignitor (see Figure 4-6).

4. Remove the 3 screws securing the Ignitor Assembly (see Figure 4-6).

5. Replace the Ignitor Assembly in reverse order.

Arc Lamp Module

Connector Plug

(circled).

Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

Laser Power Supply

Igniter Assy.)

(for

Igniter

Cables

Igniter

Assembly

Figure 4-6

Ignitor Assembly (Arc Lamp Docking Module removed).

4.6 Arc Lamp Power Supply

To remove the Arc Lamp Power Supply (ALPS):

1. Remove the front cover (see Section 4.2).

CAUTION!:

Lamp current be turned down ( new Arc Lamp to help prevent possible damage that could reduce the life of the new lamp.

2. Disconnect the control cable (P11) from (J72) and remove the cable from

the cable ties.

3. Disconnect the ALPS Ouput cables from the (+) and (-) terminals on (J74).

Control Cable

(P11)

It is strongly recommended that the Arc

see Section 3.1

) before installing a

A/C Plug

Arc Lamp Output

± Cables (J74)

Figure 4-7

Arc Lamp Power Supply connections.

(P71)

4. Disconnect the A/C plug (P71) from (J71).

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Chapter 4---Maintenance (Removal/Replacement)

5. Remove the 2 Phillips-head screws from the front of the ALPS.

6. Loosen the 3 Phillips-heads screws at the rear of the ALPS.

7. Slide the ALPS forward and out.

8. Replace the power supply in the reverse order.

9. Reset the power setting (see section 3.1).

4.7 Low Voltage Power Supply

To remove the Low Voltage Power Supply (LVPS):

1. Remove all the covers.

2. Remove the High Voltage Power Supply (see Section 4.8).

3. Remove the 2 Phillips-head screws from the base of the LVPS.

4. Slide the LVPS out slowly.

5. Reach behind the LVPS and disconnect the A/C cable (P79 from (J75).

Also disconnect the control cable (P07) from (J76).

6. Reinstall the LVPS in reverse order. After the LVPS is installed, recheck

Timing, Geometry, Electronic Focus, ILA® Bias/Sensitivity, Convergence, G2, and Shading.

Figure 4-8

Low Voltage Power Supply.

4.8 High Voltage Power Supply

To remove the High Voltage Power Supply (HVPS):

1. Remove all the covers (see Section 4.2).

2. Disconnect the 3 CRT Anode leads(unscrew black connector).

Mounting

Screws for

Low Voltage

Power Supply

Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

CRT Anode leads

CRT Focus Leads

Mounting screws

for the HVPS

Figure 4-9

High Voltage Power Supply.

3. Disconnect the 3 grey CRT focus leads.

4. Disconnect the G2 supply cable from (CN5) on the HVPS.

5. Remove the 2 Phillips-head screws from the base of the HVPS.

6. Carefully slide the HVPS slowly out.

7. Unplug the I/O cable (CN1) in the rear of the power supply.

8. Reinstall the HVPS in the reverse order from above.

9. Replace the projector covers.

Horizontal Deflection PCB

Vertical Convergence Deflection PCB

Deflection Processor PCB

System Controller / Raster Timing

Generator PCB

Video Processor PCB

Figure 4-10

Printed Circuit Board orientation inside Electronics Module.

4.9 System Controller / Raster Timing Generator PCB

NOTE

Laptop or PC prior to replacing the SC/RTG PCB, to retain data otherwise all the setup data will stay will the old SC/RTG PCB (see Appendix A Import/Export).

4-10 Model 100 Service Manual

: It is strongly recommended to download (Export) setup data to a

Chapter 4---Maintenance (Removal/Replacement)

When replacing any printed circuit boards (PCB), always:

Turn the projector off and allow to cool off for 5 minutes.

Verify that the power is off at the circuit breaker and the power plug is disconnected.

Verify there are no bent pins on any connectors before installing the PCB.

Make sure the PCB is properly and securely seated before reapplying power.

The System Controller / Raster Timing Generator PCB is located just above the Video Processor PCB and can be identified by the external control connections on it (see Figure 4-10). All internal electrical connections to the System Controller / Raster Timing Generator PCB, are routed through the backplane board. There are only the external interface cables to remove.

To remove the System Controller / Raster Timing Generator (SC/RTG),:

1. Disconnect the control cables.

2. Remove the right side cover (optional).

3. Use a small, flat-head screwdriver to loosen the retaining screws

4. Grasp the D-handle and pull out the SC/RTG PCB.

5. Reverse the order to install SC/RTG PCB.

Figure 4-11

System Controller/ RTG and Video Processor PCBs.

4.10 Video Processor PCB

The Video Processor, VIC PCB is located below all the other circuit boards and can be identified by the Video Input BNC connectors on it (see Figure 4-10). All internal electrical connections to the Video Processor PCB are routed through the backplane board. There are only the external Video Input cables to remove.

System Controller/

Raster Timing

Generator PCB

Video

Processor PCB

To remove the Video Processor PCB :

1. Disconnect the Video Input cables.

2. Remove the right side cover (optional).

3. Use a small, flat-blade screwdriver to remove the retaining screws

4. Grasp the D-handle and pull out the.

Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

5. Reverse the order to install Video Processor PCB.

4.11 Deflection Processor PCB.

The Deflection Processor PCB is located above the SC/ RTG PCB of the Electronic Module card cage (see Figure 4-10).

To remove the Deflection Processor PCB.

1. Remove the right side cover.

2. Remove the panel covering the top three circuit boards.

3. Grab the PCB by edges and pull it out of the Electronics Module card

cage.

4. Replace the Deflection PCB in the reverse order.

4.12 Vertical Convergence Deflection PCB.

The Vertical Convergence/Deflection PCB is located just above the Deflection Processor (see Figure 4-10).

To remove the Vertical Convergence Deflection PCB:

1. Remove the right side cover.

2. Remove the panel covering the top three circuit boards.

3. Pull the PCB out about 2 inches in order to get access to the plugs and

jacks.

4. Remove the Horizontal Scan Reversal Jumper cable from either (CN702

or CN701). This the cable that runs from the Horizontal Deflection PCB to the Vertical Convergence Deflection PCB (see Figure 4-12).

NOTE:

below, push the connector in slightly, then squeeze the tab and pull the connector out.

5. Remove the Red (CN711), Green (CN710), and Blue (CN709)

Convergence cables from their connections and move them out of the way.

6. Remove the Red (CN705), Green (CN704), and Blue (CN703) Yoke

cables from their connections and move them out of the way.

7. Grab the PCB by the edges and pull it out of the Electronics Module card

cage.

8. Replace the Vertical Convergence Deflection PCB in the reverse order.

To remove connectors on the printed circuit boards in the sections

4-12 Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

RGB

Convergence

Cables CN709,

CN710, CN711

connector CN711

is hidden by

CN 701

RGB CRT

Yoke

Cables

Horizontal Scan Reversal Jumper CN 701 or CN702

Figure 4-12

Vertical Convergence Deflection PCB.

4.13 Horizontal Deflection PCB

The Horizontal Deflection PCB is the smaller PCB on the top level of the Electronic Module card cage (see Figure 4-10).

To remove the Horizontal Deflection PCB:

1. Remove the right side cover (Section 4.2).

2. Remove the panel covering the top three circuit boards.

3. Remove the Horizontal Scan Reversal Jumper from either (CN702) on the

Vertical Convergence Deflection PCB.

4. Loosen the Phillips-head screw on the slide in front of the Horizontal PCB

and push the slide up.

5. Grab the PCB by the edges and pull it out of the Electronics Module card

cage.

6. Replace the Horizontal Deflection PCB in the reverse order.

4.14 Video Input Cards (VICs)

Instructions for installing, removing, editing and VIC Settings are covered in Chapter 4 Section 4.11.1 of the Model 100 User's Guide.

4.15 Regulator PCB

The Regulator PCB is located next to the Green Video Amplifier PCB. These two circuit boards appear to be just one board. They sit just above the LVPS.

1. Remove the left side cover.

2. Remove the G2 Input (CN201) from connector CN5 (on HVPS).

Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

3. Remove the three G2 Output cables from connectors CN202 (to the blue

Video Amplifier), CN203 (to the red Video Amplifier), and CN204 (to the green Video Amplifier).

4. Remove the P10REG cables from connector CN205 and connector

CN206.

5. Remove the white standoff retainer from in front of the PCB.

6. Slide the Regulator PCB out.

7. Replace the PCB in the reverse.

Control Input and Outputs

(CN

G2 Supply

(from HVPS,

CN201)

RGB G2 Output

to Video

Amplifier PCBs

(CN202-blu,

CN203-red, CN204-grn)

Figure 4-13

4.16 Video Amplifier PCB

On the Model 100, there are three Video Amplifier PCBs, one for each of the 3 CRTs. Each VA PCB is located directly under its respective CRT.

To remove a Video Amplifier PCB:

1. To remove any of the Video Amplifier PCBs it will make the job easier to

remove all the covers from the projector (Section 4.2). To remove the Video Amplifier for the green CRT, remove the Regulator PCB first (Section 4.15).

2. Disconnect the Video Input cable from connector CN101.

3. Disconnect the G2 Output connector fron connector CN107.

4. Disconnect the ground connector from connector CN109.

5. Disconnect the G1 Cathode and Filament cable from connector CN108.

6. Disconnect the Power/Control cable from connector CN102 (and

connector CN103 if it is daisy chained).

7. Disconnect the cable from connector CN106.

Regulator PCB.

4-14 Model 100 Service Manual

Chapter 4---Maintenance (Removal/Replacement)

8. Remove the white standoff retainer from in front of the PCB.

9. Slide the Video Amplifier PCB out.

10. Replace the PCB in the reverse order.

Figure 4-14

Video Amplifier PCB for Red CRT.

11. Green and Blue Video Amps are turned around 180°.

4.17 CRT/ ILA® Assembly

In the Model 100 the CRT and ILA® are removed from the projector and replaced as one part.

CN101

BNC

CN102 CN103

CN106

Heat Sink

CN108

CN107

CN109

CN105

Standoff

NOTE:

The CRTand ILA® should be treated as one unit. The CRT has a fiber optic on its output.The ILA® also has a fiber optic on its input. These fiber optics are separated by a thin film of optical fluid. Disassembly of the CRT/ILA

Assembly should not be attempted except by Hughes-JVC trained technicians in a clean room environment.

WARNING!!!

The CRT/ILA® Assemblies should be handled with extreme caution. If dropped, they can implode and flying glass can cause severe injury to personnel. Be careful not to bump or drop the CRT. Place in a safe area immediately after removal.

The CRT/ILA

Assemblies are located in the main body of the projector. The Red CRT/ILA® assembly is turned perpendicular to the Green and Blue CRT/ILA

To remove a CRT/ILA

assemblies

Assembly (see Figure 4-15):

1. Remove all the covers. (Section 4.2).

Model 100 Service Manual

jvc M100 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual