Coretronic PI500 User manual

Model Name : PI500
SERVICE MANUAL
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Copyright February, 2004 . All Rights Reserved
Document #621-G04-01A . P/N: 36.62101.001
Prepared by SI :
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Prepared by TSE :
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Check by :
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Approved by :
________________________________________

ThismanualispreparedforthemaintenanceserviceforthePI500LCD
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 machine readable form without prior
written consent except for copyies retained by the purchaser for backup purpose.
This manual includes major system assembly, 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 change without prior notice. Any subse-
quent changes made to the data herein will be incorporated in future edition.
PI500ServiceManual
CopyrightFebruary,2004
All Rights Reserved
ManualVersion1.0
Document #621-G04-01A
Preface
PI500i

PI500ii
Table of Contents
Chapter 1 Introduction 1-1
TheAppropriate 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 LCDPanel 2-5
RemovingAudio Board, Stand and Rear Cover 2-5
Chapter 3 Troubleshooting 3-1
EquipmentNeeded 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
TestDisplay Modes and Pattern 4-3
Function Test andAlignment Procedure 4-6
Cleaning 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
EquipmentNeeded 6-1
Hardware Setup 6-2
Software Procedure 6-2

Chapter 7 Touch Panel Driver Calibration Procedure 7-1
TouchFunctionTest 7-1
Calibration 7-3
Appendix A 8-1
Exploded Overview 8-1
Appendix B 8-3
SerialNumber SystemDefinition 8-3
PI500iii
Reader’s Response 8-5

PI500
1-1
Coretronic Corporation
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”
flatpanelscreen.Therearesixtopicsinthismanual,andyoucanimmediatelyidentifyproblemsthroughthis
manual.
This manual is for the technicians and people who have the electronic background. Send the
product back to the distributor for repairing and do not attempt to do anything which is complex or
not mentioned in the troubleshooting.
1-1 The Appropriate Operation
Turn off the product before cleaning.
Use only a dry soft cloth when cleaning the Touch panel surface.
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.
1-1.1 For Monitor

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1-1.2 LCD Module Handling Precautions
1) Sincefront polarizer iseasilydamaged,pay attention nottoscratch it.
2) Besure toturn offpowersupplywheninsertingordisconnectingfrominputconnector.
3) Wipe off water drop immediately. Long contact 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
whenhandling.
7) Do not open nor modify the ModuleAssembly.
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
InterfaceConnectorof the TFT Module.
11) AfterinstallationoftheTFTModuleintoanenclosure(LCDmonitorhousing,forexample),donot
twist nor bend the TFTModule 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 cathodefluorescent lampin LCD containsa smallamount of mercury.Please follow local
ordinancesorregulationsfordisposal.
13) SmallamountofmaterialshavingnoflammabilitygradeisusedintheLCDmodule.
TheLCD module shouldbesuppliedby power compliedwithrequirements of LimitedPowerSource
(IEC60950 or UL1950), or be applied exemption.
14) The LCDmodule isdesigned so thatthe CFLin it issupplied byLimited Current
Circuit(IEC60950 or UL1950).Do not connect the CFLin Hazardous Voltage Circuit.

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1-1.3 Handling and Placing Methods
CorrectMethods: IncorrectMethods:
Onlytouchthe metalframeofthe
LCDpanel or the front cover of the
monitor.Do not touch the surfaceof
thepolarizer.
Surface of the LCDpanel is pressed
byfingersandthatwillprobably
cause“Mura.”

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Coretronic Corporation
Takeoutthemonitorwithcushions TakingoutthemonitorbygraspingtheLCD
panel.Thatwillprobablycause“Mura.”
Place the monitor on a clean and soft foam pad. Placingthemonitoronforeignobjects.Thatwill
probably scratch the surface of the panel or cause
“Mura.”
Thepanel is placedfacedown on the lap.That
willprobablycause“Mura.”

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Coretronic Corporation
1-2 Product Highlight
15" XGA TFT Color LCD Touch Monitor
Analogsignalinput
ActivematrixTFTLCDtechnology
1024 x 768 addressable pixels
250cd/m2brightness
31.5-60 kHz horizontal scan
56-75Hz high refresh rate
Auto-adjustment
MultifunctionOSDusercontrols
VESADPMS power saving
Power on lock function
Kensingtonlockfunction
PenInput Screen

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1-3 Technical Specification
LCDPanel -ActivematrixTFT color LCD.
-15.0"diagonalscreensize
-1024 x 768 addressable 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 (Typ.)
Tablet -Electromagnetic
-Interface:USB
-Resolution:500lpi
-Accuracy : +/-0.5mm
-Pressurelevel : 512 levels
-Report Rate : 125 reports/per second
-MaximumReading Height:25mmabovethepanelorprotection object
-MaximumWritingHeight:20mmabovethepanelorprotectionobject
-Operating System: Win98/2000,ME,XP,MAC 9.0/9.1/9.2
Display Resolution -1024 pixels (H) x 768 lines(V)
ActiveDisplayArea -304.1(H) x 228.1(V)mm
Display Color -262144 colors (6-bits color)
HorizontalScan -31.5kHz to 60kHz
Vertical Refresh -56Hz to 75Hz
PixelFrequency -78.75MHz

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Pen Input Screen -AIPTEKTablet
Compatibility -IBM & VESAVGA 640 x 350,70Hz
640 x 400,70Hz
720 x 400,70Hz
640 x 480,60Hz
640 x 480,72/75Hz
-VESASVGA 800 x 600,56/60/72/75Hz
-VESAXGA 1024 x 768,60/70/75Hz
-Apple Mac LC 640 x 480,67Hz
-Apple Mac II 640 x 480,67Hz
-Apple Mac 832 x 624,75Hz
1024 x 768,75Hz
InputSignal -PC Type
AnalogComputerinput
Video: analog RGB0.7Vp-p
Sync. : separate sync.
Auto-adjustment -Yes
I/OConnectors -DC power in (Pig tail)
-VGAforAnalogcomputerinput(Pigtail)
PowerSaving -VESADPMS standard
PowerConsumption -30watt (max.), < 3watt (off mode)

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Environmental -Temperature : Operating temperature : 5°C ~ 35°C
Non-Operating temperature : -20°C ~ 60°C
-Humidity:
Operating:80%maximum
Non-Operating:80%maximum
Mountinginterface -VESAFlatPanelMonitorPhysicalMountingInterface
(75 mm x 75 mm)
AC/ADAdapter -Externalpower adapter
-Universal typeAC 100-240V(50/60Hz)
-Output:DC12V
-UL, CSA, TUV , CE , CE Mark compliant
Agencyapproval -FCC-B, CE-B, VCCI-II , UL, CUL, TUV,
StandardPackage -thePI-500 containsthe followings:
LCDmonitorwithstand
Power cord
AC/DCAdapter
User’smanual
SoftWare *3
Pen
Penhouse
Figureof pentweezers
Battery*1

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Coretronic Corporation
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
VESAVGA 640 x 480 72 37.9
VESAVGA 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

2-1Coretronic Corporation PI500
Chapter 2
Disassembly Procedure
2-1 Removing Front Cover and Control Board
1. Lay PI500 facedown and unscrew 2 screws to remove the rubber feet.
2. Push the stand back and use the plastic plate to separate the front cover from the main body.
PlasticPlate

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3. Unscrew 4 screws to lift up the panel module.
4. Lift up the panel module, and unplug 2 cables to remove the front cover.
Front Cover
5. Unscrew 4 screws to remove the speakers.
6. Unscrew 3 screws to remove the control board.
ControlBoard

2-3Coretronic Corporation PI500
2-2 Removing Main Board
7. Lift up the panel module and unplug 4 cables to detach the panel module from the rear cover.
8. Disconnect 3 cables to remove the main board and unscrew 4 screws (as red circles show).
Main Board

PI5002-4Coretronic Corporation
2-3 Removing Inverter Board & IF Card
8. Unscrew 2 screws (as yellow circles show) and unplug 3 cables (as red circles indicate) to
removethe inverter board.
InverterBoard
9. Unscrew 3 screws to remove the shielding plate and then unscrew 2 screws, and unplug 2
cables to remove the IF card.
IF card

2-5Coretronic Corporation PI500
9. Use a knife to separate the protection glass from the LCDpanel at four conners.
Notice:
1.) While using the knife, be careful not to scratch the LCDPanel.
2.) The double tapes can not be reused after being cut off.
2-4 Removing LCD Panel
2-5 Removing Audio Board, Stand & Rear Cover
10. Unscrew 2 screws and unplug a wire to remove the audio board.
AudioBoard
ProtectionGlass
LCDPanel

PI5002-6Coretronic Corporation
11. Use the nipper to remove 3 lockers and unscrew one screw, then you can remove the 3 wires.
12. Unscrew 4 screws to separate the stand from the rear cover and then unscrew 5 screws to
disassemblethestand.
13. Unscrew 4 screws to remove the holders.

PI5003-1
Chapter 3
Troubleshooting
3-1 Equipment Needed
- PI500Monitor
- Philips ScrewDriver #101 and #107
- PC(PersonalComputer)withXGAresolution.
- Sound Card.
- 8%NDFilter
- TouchTestTooling(Arcylic)