jvc M100 Service Manual
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
© Copyright 1998 by Hughes-JVC Technology Corporation.
All worldwide rights reserved.
This manual was produced by Hughes-JVC Technology Corporation and may be
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
ii
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
v
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
iv
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
1-2 Model 100 Service Manual
CRT Grid 1
Chapter 1---Introduction
G
2
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
2
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
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
+15V
-15
)
CN1
19
Chapter 2---System Description
R ANODE
5
9
11
12
13
17
20
HIGH
VOLTAGE
POWER
SUPPLY
G ANODE
B ANODE
R FOCUS
G FOCUS
B FOCUS
CN5
ARC GND
3
G2 SUPPLY
1
T
O
C
R
T
S
TO
REGULATOR
PCB
FROM
DEFLECTION
PROCESSOR
H FOCUS SIG
V FOCUS SIG
15
16
CN1 IS CONNECTED TO J104 BACKPLANE
CN5 IS CONNECTED TO CN201 REGULATOR PCB
CN1
14
18
G1 SUPPLY
/HV OK
TO
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.
2-14 Model 100 Service Manual
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
B2
RED_VIC
B4
GRN_VIC
B6
BLU_VIC
H_VIC
B8
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
Loading...