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SERVICE MANUAL
This manual is prepared for the maintenance service for the Compaq MP1400 Micro-portable
Color DMD Projector. Maintenance procedures described in this manual are intended to isolate faulty
parts and replace them in the field. It also aims to serve as a guide in procuring replacement parts for
this product.
This manual is copyrighted and all rights are reserved. This product may not, in whole or in
part, be copied, photocopied, translated or reduced to any electronic or machine readable form without
prior written consent except for copies retained by the purchaser for backup purpose.
This manual includes system overview, major system assembly, components’ description, and
the “Troubleshooting” making explanations on how to detect errors. It also includes a flow chart for
checking or correcting faults.
No warranty or representation, either expressed or implied, is made with respect to this
documentation, its quality, performance, merchantability or fitness for particular purpose.
No event that the vendor will be liable for direct, indirect, special, incidental or consequen-
tial damages arising out of the user or inability to use this product or documentation.
✍ NOTICE :
The information found in this manual is subject to change without prior notice.
Any subsequent changes made to the data herein will be incorporated in further
edition.
Copyright May, 2000
All Rights Reserved
Manual Version 1.0
Document #817-G04-01A
Preface
SERVICE MANUAL
✽ Table of Contents ✽
I. Introduction 1-1
1-1 Technical Specification 1-2
1-2 Environmental Specification 1-4
II. Fundamental Principle 2-1
2-1 Projector Controls and Indicators 2-2
2-2 Optics 2-4
2-3 System Block Diagram 2-6
III. Mechanical Construction 3-1
3-1 Package Overview 3-2
3-2 Exploded Overview 3-4
3-3 Field Replacement Unit (FRU) List 3-10
IV. The Procedure of Disassembly 4-1
4-1 Disassemble Lamp Module 4-2
4-2 Disassemble Right Housing 4-3
4-3 Disassemble Keypad Board 4-4
4-4 Disassemble DC-DC Converter 4-5
4-5 Disassemble Electronic Module from Left Housing 4-6
4-6 Disassemble Main Board and DMD Board 4-7
4-7 Disassemble Fan, Ballast and Elevator Module 4-8
V. The Function of Boards 5-1
5-1 Main Board (Side A) 5-2
5-2 Main Board (Side B) 5-4
5-3 DMD Board (Side A) 5-8
5-4 DMD Board (Side B) 5-10
5-5 DC-DC Converter (Side A) 5-14
5-6 DC-DC Converter (Side B) 5-16
5-7 KeyPad Board 5-17
SERVICE MANUAL
VI. Troubleshooting 6-1
6-1 Equipment Needed 6-2
6-2 Main Procedure 6-2
VII. Function Test & Alignment Procedure 7-1
7-1 Product 7-1
7-2 Test Equipment 7-1
7-3 Test Condition 7-1
7-4 Test Display Modes & Pattern 7-2
7-5 Function Test and Alignment Procedure 7-5
VIII.Specifications 8-1
8-1 Lamp Specification 8-2
8-2 DC-DC Power Specification 8-4
8-3 Screen Defects 8-8
IX. DDC Key-In Procedure 9-1
9-1 Equipment 9-1
9-2 Procedure 9-1
X. Firmware Upgrading Procedure 10-1
10-1 Equipment 10-1
10-2 Setup Procdure 10-2
10-3 Upgrading Procdure 10-2
XI. Appendix 11-1
11-1 Serial Number Definition 11-1
SERVICE MANUAL
Martin 1-1
Chapter I
Introduction
Introduction
This manual is applied to Compaq MP1400 Microportable Projector with digital imaging func-
tionality based on Digital Micromirror Device (DMD) technology. It’s the mode of single panel, UHP
lamp and 800*600 resolution. The manual gives you a brief description of basic technical information to
help in service and maintaining the product.
Your customers will appreciate the quick response time when you immediately identify problems
that occur with our products. We expect your customers will
appreciate the service that you offer them.
This manual is for technicians and people who have an electronic background. Send the product
back to the distributor for repairing and do not attempt to do anything that is complex or is not mentioned
in the troubleshooting.
SERVICE MANUAL
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1-1 Technical Specification
Projection Panel DMD 7” SVGA 800*600*1
Lamp Type Baseline is 1.0mm (minimum improved 1.3mm)
Brightness > 600 lumens Goal : 700 lumens
Avg. Lamp Life in Hours 1500 hours for 1.3mm, 1000 hours minimum for 1.0 assume
use the same reflector as 1.3mm
Noise Level Under 44dBA Goal : 42dBA
Projection Lens 3.3 feet - 35.64 feet; 1 meter - 10.8 meters
Max. Weight (Unpacked) Under 4.5 lbs (without cables, handle and cap)
Max. Dimensions (W*H*D) 8*8.5*27 inches
Resolution 800*600 (SVGA)
Max. Graphics Resolution 1024*768 compression
Displayable Colors 16.7 million colors
Power Source 90 - 265 VAC, 50 - 60 Hz
Flash Upgrade RS232 to DFP adapter
Input Terminal One 15-pin D-type connector with one cable included,
one Digital FP connector with one cable included
Firmware Pixelworks 264 chip with USB, DVI, IR
SERVICE MANUAL
Martin 1-3
Miscellaneous Firmware upgradeable through DFP
Utilize low-cost projection lens (Y.K.) - plastic holder
Flicker free ballast power supply
Shorter Hollow integration rod
Xilinx FPGA for 0.7 SVGA now, ASIC conversion
for 0.7SVGA-2/00
Online Documentation Multilingual User’s Guide in pdf format with reader
Presentation Utility Utility for changing resolutions including dual-display
support and turning off power-saver and screen saver
(multilingual)
Projector Display Assistant Utility for helping the user set clock, clock phase, contrast,
etc... (English only)
Video Compatibility NTSC CM, 4.43MHz
PAC (B, D, G, H, I, M, N)
SECAM (B, D, G, K, K1, L)
Computer Compatibility Horizontal Frequency : 15 ~ 60 KHz
Vertical Frequency : 48 ~ 85Hz
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1-2 Environmental Specification
Temperature
Sea Level : Operating 10
o
C ~ 40
o
C
Non-operating -30
o
C ~ 65
o
C
2500~5000ft : Operating 10
o
C ~ 35
o
C
Non-operating -30
o
C ~ 65
o
C
5000~10000ft : Operating 10
o
C ~ 28
o
C
Non-operating -30
o
C ~ 65
o
C
Humidity
Operating 20 to 80% relative, non-condensing
Non-operating 5 to 95% relative
Altitude
Operating 0 ~ +10,000 feet (3048m)
Non-operating 0 ~ +30,000 feet (9144m)
SERVICE MANUAL
Martin 2-1
Fundamental Principle
Fundamental Principle
Chapter II
This section provides the conceptual drawing about optics of projector and basic functions in the
on-screen menu. You can realize optical projection system through the following diagram and also the
integral part of configuration.
SERVICE MANUAL
Martin 2-2
2-1 Projector Controls and Indicators
OSD Select button
Auto-image
button
OSD - and + buttons
Standby button
❒ ON/OFF Switch
The projector shall have a AC mains power control switch visible and accessible on the
end of the projector, near the video and AC inlets.
❒ Indicator LED
There shall be an LED located in the Standby button which lights green when the projector
is powered on with a stable and usable display. The color shall change from green to
yellow to indicate it is in the suspend or standby modes.
❒ Projector Input Signal Selection
There is no input signal select switch on the projector itself. It is achieved either via the
projector OSD, pushing the Source button on the multimedia adapter or by pressing the
Source button on the remote control.
SERVICE MANUAL
Martin 2-3
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❒ On-Screen Display Pushbuttons
There shall be three side panel buttons, a Select button, a Plus(+) button, and a Minus(-)
button, for controlling the On Screen Display (OSD) which provides a means of adjusting
projector parameters.
❒ Standby Function
This button is used to instantly put the projector into a “standing by” sequence. When
pressed, first the projector switches from the displayed video to the “Going to Standby”
information screen. Then, after approximately a 10-second delay, the lamp shuts off and
the color wheel stops. The fans continue to operate to cool the lamp and projector, and then
they also shut off when the internal temperature reaches a comfortable temperature. The
electronics remains powered to expeditea restart. The Standby button LED flashes for
approximately 45 seconds to indicate the projector cannot be restarted during this time.
When the Standby LED stops flashing, the button can then be pressed so the lamp, color
wheel and fans all restart to restore full functionality.
❒ Resync Button
This button is to the right of the OSD control buttons. When it is pressed, the micro-
controller shall enter a routine to remeasure the sync frequencies, optimize the clock, clock
phase and reset the size and centering of the image on the screen. The settings realized by
this function shall override any previous user settings for this mode. These shall then be
overridden by any user adjustments subsequently made through the OSD, until the next time
this button may be pressed for this mode.
❒ Projector Control
SERVICE MANUAL
Martin 2-4
1. Projection Lens 7. Plastic (PMMA) Condenser Lens
2. TIR Prism 8. UV-IR Filter
3. DMD Module 9. Hollow Integration Rod
4. Plastic (PMMA) Relay Lens 10. Color Wheel
5. Enhance Mirror 11. AR Coating Condenser
6. Enhance Mirror 12. OSRAM Elliptical Reflector
UHP Lamp 120W
2-2 Optics
2-2.1 Conceptual Drawing
10
2
11
1
3
8
7
6
4
9
5
12
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2-2.2 Basic Functions
v Projection Lens Projecting image on the screen
v Enhance Mirror Folding optical path.
v Elliptical Reflector The light source.
UHP Lamp 120W
v Plastic Condenser Condensing the light beam.
Lens
v Hollow Making the light beam uniform.
Integration Rod
v UV-IR Filter Filtering UV-IR out.
v Plastic Relay Lens Lengthening optical path.
v TIR Prism Reflecting all light beams inside.
v Color Wheel Separating the light beam into and produce
R.G.B colors.
v AR Coating Condensing the light beam.
Condenser
v DMD Module Displaying component.
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2-3 System Block Diagram
Power
Main Board
DMD Module
Optical Engine Module
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2-3.1Main Board Block Diagram
Analog
Input
Digital
Input
Image
Processor
Memory
Output Stage
M/B
PANACT
VCLK
V/D
DVI_SCDT
IR_DATA
VDL-
VDL+
KEY6
VRGB
(0..7)
R.G.B.
(0..7)
PVIN
PHIN
DE
GFBK
VGA
GRF
GCOAST
GHSFOUT
GBLKSPL
VGAHN
VGAVIN
GSOG
GPEN
GHS
GVS
SDA
SCL
DCLK
DENR
DV S
DHS
FANEN
LED(1..6)
WDTEN
WRON
WRIN
WDTEN
WRON
WRIN
STANDBY
7SEC
RESET
MCLK
DCLK
THERMOSTAT
KEY(1..5)
RXD
NMI
IRSTN
PWRGOOD
LAMPLIT
LAMPEN
VPPEN
ROMOEN
ROMWEN
A(0..18) D(0..15)
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Martin 2-8
❐ Analog Input The AD9884 is a complete 8-bit Msps monolithic analog interface
optimized for capturing RGB graphics signals from personal
computers and workstations. Its 140 Msps encode rate capability
and full-power analog bandwidth of 500 MHz supports display
resolutions of up to 1280*1024 (SXGA) at 75Hz with sufficient
input bandwidth to accurately acquire and digitize each pixel.
To minimize system cost and power dissipation the AD9884
includes an internal +1.25V reference, PLL to generate a pixel
clock from HSYNC, and programmable gain, offset, and clamp
circuits.
❐ Digital Input The SiI 141 uses PanelLink Digital technology to support displays
ranging from VGA to High Refresh XGA (25-86 MHz), with a
flexible single or dual pixel out interface and selectable output
drive, the SiI 141 receiver supports up to true color panels (24
bit/pixel, 16.7M colors) in 1 pixel/clock mode (18 bit/pixel in a
pixel/clock mode). PanelLink also features an inter-pair skew
tolerance up to 1 full input clock cycle and a highly jitter tolerant
PLL design.
PanelLink Digital technology simplifies PC design by resolving
many of the system level issues associated with high-speed digital
design, providing the system designer with a digital interface
solution that is quicker to market and lower in cost.
❐ DMD The DMD 8460_A is a spatial light modulator that consists of an
848(H)*600(V) array of aluminum micro-mechanical mirrors on a
17-micrometer(um) pitch. Each mirror can be individually
deflected at an angle of +/- 10 degrees about a hinged diagonal
axis. The deflection angle (positive or negative) of the mirrors
can be individually controlled by means of underlying CMOS and
addressing circuitry and mirror reset signals. Effectively, the DMD
is an electrical input, optical output memory device.
2-3.1.1 Description
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Martin 2-9
❐ Image Processor The PW264 is a highly integrated “system on a chip” that
interfaces computer graphics and video inputs in virtually any
format to a fixed frequency flat panel display.
An embedded DRAM frame buffer and memory controller
perform frame rate conversion.
Horizontal and vertical image scalars coupled with intelligent
frame locking circuitry create sharp images, centered on the
screen, without user intervention.
Computer images from VGA to SXGA resolution input to the chip
can be resized to fit on the target display device, which can also
have any resolution up to XGA.
Video data from 4:3 aspect ratio NTSC or PAL and 16:9 aspect
ratio HDTV or SDTV is supported. Nonlinear scaling and
separate horizontal and vertical scalars allow these inputs to be
resized optimally for the native resolution of the display device.
An on-chip microprocessor and an included embedded software
suite allow manufacturers to develop feature rich products.
Programmable features include the user interface, custom start-up
screen, all automatic imaging features and special screen effects.
An evaluation kit is a available to streamline the design process
and reduce product development time.
The PW264 requires a minimum of external components. With the
incorporation of the frame buffer, resizing circuitry, and micro
processor and peripherals into the chip, the number of
interconnects and the circuit board size is reduced, leading to
lower costs.
❐ Memory The TE28F400B3T is a nonvolatile, electrically block-erasable
(Flash), programmable read-only memory containing 4,193,304
bits organized as 262,144 words by 16 bits or 524,288 words by
18 bits. Smart Voltage Technology (SVT) provides industry-
standard, multi- or single-voltage, dual-supply operation. Writing
or erasing the device is done with either a 5V or 12V VPP
voltage,while all operations are performed with a 3.3V or 5V
VCC. It is fabricated with Micron’s advanced CMOS floating-
gate process.
The MT28F400B1 is organized into seven separately erasable
blocks. To ensure that critical firmware is protected from
accidental erasure or overwrite, the MT28F400B1 features a
hardware-protected boot block.
SERVICE MANUAL
Martin 2-10
2-3.2 DMD Module Block Diagram
Customer Interface Connector
Micro
Controller
Control
FPGA
Config/
Sequence
Prom
Allegro
Motor
Control
EEPROM
Clock
OSC.
Datapath
Formatter
DPF2A
SDRAM A
SDRAM B
Data (32)
Data (32)
CLKIN
Color Wheel Index
Lamp Control & Status
SYNCVAL
OLACT
TFIELD
ACTDATA
HSYNCZ
VSYNCZ
DPF2A Control
FPGA CLK
Red (7:0), Green (7:0)& Blue (7:0) data
CWRSTZ
Color Wheel Control
Color Wheel Status
PBUS2
VSYNCZ, RESETZ
Reset
ASIC
DMD
8460
PBUS2
BIAS BIN
BIAS/Reset Control
DMD Control
Voltage
Enables
FPGA CLK
DMDCLK
SDRAM CLK
DMD Data [63:0]
VCC2, VOFFSET,
VBIAS, VRESET
Generation
Memory Control B
Memory Control A
Memory Address A (12)
Memory Address A (12)
DMD Control
Address (19)
Data (8)
Color Wheel Drive
VCC2 (DMD)
VCC2 (ASIC)
VRESET
VBIAS
VOFFSET
VCC2 (ASIC)
INPUTCLK
+12V
+5V
Lower Data
Upper Data
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Martin 2-11
❐ SDRAM The SDRAM provides for grammable READ or WRITE burst
lengths of 1, 2, 4 or 8 locations, or the full page, with a burst
terminate option. An AUTO PRECHARGE function may be
enabled to provide a self-timed row precharge that is initiated at
the end of the burst sequence.
The 1 Meg X 16 SDRAM uses an internal pipelined architecture
to achieve high-speed operation. It is designed to operate in 3.3V
low-power memory systems. All inputs and outputs are LVTTL-
compatible.
❐ Micro Controller The H8/300 CPU is a high-speed processor with an architecture
featuring powerful bit-manipulation instructions, ideally suited for
realtime control applications. The on-chip supporting modules
implement peripheral functions needed in system configurations.
These include ROM, RAM, four types of timers (a 16-bit free-
running timer, 8-bit timers, PWM timers, and a watchdog timer), a
serial communication interface (SCI) and I
2
C bus interface
(option), a host interface (HIF), an A/D converter, a D/A
converter, and I/O ports.
❐ Data Formatter DPF2A is an Application Specific Integrated Circuit (ASIC)
intended for use in DMD Display system applications. It provides
digital RGB/YUV signal conditioning, DMD image processing
and DMD data formatting. It is designed to work in conjunction
with two banks of external SDRAM and external Data Format
Controller. DPF2A’s operation is programmable via a serial P-
Bus Interface and relies on external inputs for real time control.
v10,8,8 bit YUV or RGB Data Input Pixel Format
v72 MHz input pixel data rate, 24 bit OSD embedded overlay
vBrightness, Contrast and Hue control, DeGamma Look Up table
vError Diffusion & Noise Free Boundary Dispersion
vProgrammable Color Space Conversion
vHue/Gain Controlled RGBW Color Wheel support
vSpoke Light Recapture support,PWM Artifact reduction support
v116MHz SDRAM data I/O operation
vSupports up to 1024 pixel DMD display formats
v5 Volt tolerant inputs & controls
vJTAG Boundary Scan Test Support
vLVTTL compatible SDRAM and DMD interface
v352 pin Plastic Ball Grid Arry, heat spreader package
2-3.2.1 Description
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❐ ASIC The Display Controller is an Application Specific Integrated
Circuit (ASIC) intended for use in DMD (Digital micro-mirror
device) systems. The ASIC performs a variety of functions, some
of which are controlling the data flow between DPF2A, memory,
and the DMD as well as generating the DMD reset waveform. The
Display Controller is designed to work in conjunction with two
banks of external SDRAM (type 1M*16), an external SR16C and
an external DPF2A ASIC.
❐ Color Wheel Controller The A8902CLBA is a three-phase brushless dc motor controller/
driver for use in 5V or 12V hard-disk drives. The three half-
bridge outputs are low on-resistance n-channel DMOS devices
capable of driving up to 1.25A. The A8902CLBA provides
complete, reliable, self-contained back-EMF sensing motor
startup and running algorithms. A programmable digital frequency-
locked loop speed control circuit together with the linear current
control circuitry provides precise motor speed regulation.
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Mechanical Construction
Mechanical Construction
Chapter III
This section provides package & exploded view of MP1400 and replaceable part lists for the
Micro-portable Color DMD projector. The replaceable parts list are attached so that you can place an
order for flawless parts and replace them soon.
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