Optoma PI500-S Schematic

SER VICE MANUAL

Model Name : PI500

Prepared by SI : ________________________________________ Prepared by TSE : ________________________________________ Check by : ________________________________________ Approved by : ________________________________________

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Document #621-G04-01A . P/N: 36.62101.001

Prefa ce

This ma nual is prepared for the maintena nce service f or the PI500 LCD Panel Monitor. 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 ma chine readable form without prior written consent except for copyies retained by the purchaser for backup purpose. This manual includes major system asse mbly, and the “Troubleshooting” makes 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 will the vendor be liable for direct, indirect, special, incidental or consequential damages arising out of the user or inability to use this product or documentation.

Notice:

The information found in this manual is subject to cha nge without prior notice. Any subse-

quent changes made to the data herein will be incorporated in future edition.

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Table of Contents

Chapter 1 Introduction 1-1

The Appropriate Operation 1-1 Product Highlight 1-5 Technical Specification 1-6 Compatible Modes 1-9

Chapter 2 Disassembly of Procedure 2-1

Removing Front Cover and Control Board 2-1 Removing Main Board 2-3 Removing Inverter Board and IF Card 2-4 Removing LCD Pa nel 2-5 Removing Audio Board, Sta nd a nd Re ar Cover 2-5

Chapter 3 Troubleshooting 3-1

Equipment Needed 3-1 Main Procedure 3-2

Chapter 4 Function Test and Alignment Procedure 4-1

Product 4-1 Test Equipment 4-1 Hot Key 4-1 Test Condition 4-2 Test Display Modes a nd Pattern 4-3 Function Test and Alignment Procedure 4-6 Clea ning 4-8

Chapter 5 Firmware Upgrade Procedure 5-1

Equipment Needed 5-1 Hardware Setup 5-2 Software Procedure 5-2

Chapter 6 DDC Key-in Procedure 6-1

Equipment Needed 6-1 Hardware Setup 6-2 Software Procedure 6-2

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Chapter 7 Touch Panel Driver Calibration Procedure 7-1

T ouch Function T est 7-1 Calibration 7-3

Appendix A 8-1

Exploded Overview 8-1

Appendix B 8- 3

Serial Number System Definition 8-3 Reader’s Response 8-5

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Chapter 1

Introduction

This manual provides an integral technical information you need to maintain the LCD Monitor. And this manual is applied to the model of 1024 x 768 pixels color TFT LCD Monitor with a 15” flat pa nel screen. There are six topics in this ma nual, a nd you can i mmediately identify problems through this ma nual.

This manual is for the technicians and people who have the electronic background. Send the product back to the distributor for re pairing and do not attempt to do anything which is complex or not mentioned in the troubleshooting.

1-1 The Appropriate Operation

1-1.1 For Monitor

Turn off the product before cleaning.

Use only a dry soft cloth when cleaning the Touch panel surfa ce.

Use a soft cloth moistured with mild detergent to clean the display housing.

Use only high quality and safety approved AC/DC power adapter.

Disconnect the power plug from AC outlet if the product is not used for a long period of time.

Do not touch the Touch panel surface with sharp or hard objects.

Do not use abrasive cleaners, waxes or solvents for your cleaning.

Do not operate the product under the following conditions :

- Extremely hot, cold or humid environment.

- Areas susceptible to excessive dusts and dirt.

- Near any appliance generating a strong magnetic field.

- Place in direct sunlight.

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1-1.2 LCD Module Handling Precautions

1) Since front polarizer is easily damaged, pay attention not to scratch it.

2) Be sure to turn off power supply when inserting or disconnecting from input connector.

3) Wi pe off water drop i mmediately . Long conta ct with water may cause discoloration or spots.

4) When the panel surface is soiled, wipe it with absorbent cotton or other soft cloth.

5) Since the panel is made of glass, it may break or crack if dropped or bumped on hard surface.

6) Since CMOS LSI is used in this module, take care of static electricity and insure human earth when handling.

7) Do not open nor modify the Module Assembly .

8) Do not press the reflector sheet at the back of the module to any directions.

9) In case if a Module has to be put back into the packing container slot after once it was taken out from the container, do not press the center of the CCFL Reflector edge. Instead, press at the far ends of the CFL Reflector edge softly. Otherwise the TFT Module may be damaged.

10) At the insertion or removal of the Signal Interface Connector, be sure not to rotate nor tilt the Interface Connector of the TFT Module.

11) After installation of the TFT Module into an enclosure (LCD monitor housing, for example), do not twist nor bend the TFT Module even momentary . At designing the enclosure, it should be taken into consideration that no bending/twisting forces are applied to the TFT Module from outside. Otherwise the TFT Module may be damaged.

12) Cold cathode fluorescent lamp in LCD contains a small amount of mercury. Please follow local ordinances or regulations for disposal.

13) Small amount of materials having no flammability grade is used in the LCD module. The LCD module should be supplied by power complied with requirements of Limited Power Source (IEC60950 or UL1950), or be applied exemption.

14) The LCD module is designed so that the CFL in it is supplied by Limited Current Circuit(IEC60950 or UL1950). Do not connect the CFL in Hazardous Voltage Circuit.

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1-1.3 Handling and Placing Methods

Correct Methods:

Only touch the metal frame of the LCD panel or the front cover of the monitor . Do not touch the surfa ce of the polarizer.

Incorrect Methods:

Surface of the LCD pa nel is pressed by fingers a nd that will probably cause “Mura.”

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T ake out the monitor with cushions

T aking out the monitor by grasping the LCD pa nel. That will probably cause “Mura.”

Place the monitor on a clean a nd soft foa m pad.

Placing the monitor on f oreign objects. That will probably scratch the surfa ce of the pa nel or cause “Mura.”

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The pa nel is placed fa cedown on the lap. That will probably cause “Mura.”

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1-2 Product Highlight

15" XGA TFT Color LCD Touch Monitor

Analog signal input

Active matrix TFT LCD technology

1024 x 768 a ddressa ble pixels

250 cd/m2 brightness

31.5-60 kHz horizontal sca n

56-75Hz high refresh rate

Auto-a djustment

Multifunction OSD user controls

VESA DPMS power saving

Power on lock function

Kensington lock function

Pen Input Screen

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1-3 Technical Specification

LCD Pa nel -Active matrix TFT color LCD.

-15.0" diagonal screen size

-1024 x 768 a ddressable pixels

-0.297 mm x 0.297 mm pixel pitch

-250 cd/m2(typ.) brightness

-400 : 1 (typ.) contrast ratio

-U/D : 40/60 (Typ.),L/R : 60/60 ,CR=10

-Tr + Tf : 16 ms (typ)

-Lamp number : 2 CCFLs

-Life : 30,000 hrs (T yp.)

T a blet -Electromagnetic

-Interface : USB

-Resolution : 500 lpi

-Accuracy : +/-0.5mm

-Pressure level : 512 levels

-Report Rate : 125 reports/per second

-Maxi mum Reading Height : 25mm a bove the pa nel or protection object

-Maxi mum Writing He ight : 20mm above the pa nel or protection object

-Operating System : W in98/2000,ME,XP,MAC 9.0/9.1/9.2

Display Resolution -1024 pixels (H) x 768 lines(V)

Active Display Area -304.1(H) x 228.1(V)mm

Display Color -262144 colors (6-bits color)

Horizontal Sca n -31.5kHz to 60kHz

Vertical Refresh -56Hz to 75Hz

Pixel Frequency -78.75MHz

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Pen Input Screen -AIPTEK T ablet

Compatibility -IBM & VESA VGA 640 x 350,70Hz

640 x 400,70Hz 720 x 400,70Hz 640 x 480,60Hz 640 x 480,72/75Hz

-VESA SVGA 800 x 600,56/60/72/75Hz

-VESA XGA 1024 x 768,60/70/75Hz

-Apple Ma c LC 640 x 480,67Hz

-Apple Ma c II 640 x 480,67Hz

-Apple M a c 832 x 624,75Hz 1024 x 768,75Hz

Input Signal -PC T ype

Analog Computer input V ideo: analog R GB 0.7V p-p Sync. : separate sync.

Auto-adjustment -Y e s

I/O Connectors -DC power in (Pig tail)

-V GA f or Analog computer input (Pig tail)

Power Saving -VESA DPMS sta ndard

Power Consumption -30watt (max.), < 3watt (off mode)

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Environmental -T e mperature : Operating temperature : 5°C ~ 35°C

Non-Operating temperature : -20°C ~ 60°C

-Humidity : Operating : 80% maximum Non-Operating : 80% maxim um

Mounting interface -VESA Flat Pa nel Monitor Physical Mounting Interfa ce

(75 mm x 75 mm)

AC/AD Adapter -External power ada pter

-Universal type AC 100-240V(50/60Hz)

-Output :DC12V

-UL , CSA , TUV , CE , CE Mark compli ant

Agency approval -FCC-B, CE-B, VCCI-II , UL, CUL, TUV,

Sta ndard Package -the PI-500 contains the followings :

LCD monitor with stand Power cord AC/DC Adapter User’s ma nual SoftW are *3 Pen Pen house Figure of pen tweezers Battery *1

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1-4 Compatible Modes

Standard Resolution Vertical Refresh Horizontal Scan (Hz) (KHz)

IBM VGA 640 x 350 70 31.5 IBM VGA 640 x 400 70 31.5 IBM VGA 720 x 400 70 31.5 IBM VGA 640 x 480 60 31.5

VESA VGA 640 x 480 72 37.9 VESA VGA 640 x 480 75 37.5 VESA SVGA 800 x 600 56 35.2 VESA SVGA 800 x 600 60 37.9 VESA SVGA 800 x 600 72 48.1 VESA SVGA 800 x 600 75 46.9

VESA XGA 1024 x 768 60 48.4 VESA XGA 1024 x 768 70 56.5 VESA XGA 1024 x 768 75 60.0

Apple Mac LC 640 x 480 67 34.9 Apple Mac II 640 x 480 67 35.0 Apple Mac 832 x 624 75 49.7

Apple Mac 1024 x 768 75 60.2

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Chapter 2

Disasse mbly Procedure

2-1 Removing Front Cover and Control Board

1. Lay PI500 fa cedown a nd unscrew 2 screws to re move the rubber feet.

2. Push the sta nd ba ck a nd use the pla stic plate to separate the front cover from the main body.

Plastic Plate

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3. Unscrew 4 screws to lift up the pa nel module.

4. Lift up the pa nel module, a nd unplug 2 ca bles to remove the front cover .

Front Cover

5. Unscrew 4 screws to remove the speakers.

6. Unscrew 3 screws to remove the control board.

Control Board

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