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Coretronic PI500 Service Manual

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SERVICE MANUAL
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Copyright February, 2004 . All Rights Reserved
Model Name : PI500
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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 :
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  • Page 1 SERVICE MANUAL Model Name : PI500 Prepared by SI : ________________________________________ Prepared by TSE : ________________________________________ Check by : ________________________________________ Approved by : ________________________________________ t i n Copyright February, 2004 . All Rights Reserved Document #621-G04-01A . P/N: 36.62101.001...
  • Page 2 Preface This manual is prepared for the maintenance service for 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.

  • Page 3: Table Of Contents

    Test Equipment Hot Key Test Condition Test Display Modes and Pattern Function Test and Alignment Procedure Cleaning Chapter 5 Firmware Upgrade Procedure Equipment Needed Hardware Setup Software Procedure Chapter 6 DDC Key-in Procedure Equipment Needed Hardware Setup Software Procedure PI500...
  • Page 4 Chapter 7 Touch Panel Driver Calibration Procedure Touch Function Test Calibration Appendix A Exploded Overview Appendix B Serial Number System Definition Reader’s Response PI500...

  • Page 5: Chapter 1 Introduction

    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. PI500 Coretronic Corporation...
  • Page 6 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. Coretronic Corporation PI500...
  • Page 7 Only touch the metal frame of the Surface of the LCD panel is pressed LCD panel or the front cover of the by fingers and that will probably monitor. Do not touch the surface of cause “Mura.” the polarizer. PI500 Coretronic Corporation...
  • Page 8 Placing the monitor on foreign objects. That will Place the monitor on a clean and soft foam pad. probably scratch the surface of the panel or cause “Mura.” The panel is placed facedown on the lap. That will probably cause “Mura.” Coretronic Corporation PI500...

  • Page 9: Product Highlight

    Active matrix TFT LCD technology 1024 x 768 addressable pixels 250 cd/m brightness 31.5-60 kHz horizontal scan 56-75Hz high refresh rate Auto-adjustment Multifunction OSD user controls VESA DPMS power saving Power on lock function Kensington lock function Pen Input Screen PI500 Coretronic Corporation...

  • Page 10: Technical Specification

    -Operating System : Win98/2000,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 Scan -31.5kHz to 60kHz Vertical Refresh -56Hz to 75Hz Pixel Frequency -78.75MHz Coretronic Corporation PI500...
  • Page 11 Video: analog RGB 0.7Vp-p Sync. : separate sync. Auto-adjustment -Yes I/O Connectors -DC power in (Pig tail) -VGA for Analog computer input (Pig tail) Power Saving -VESA DPMS standard Power Consumption -30watt (max.), < 3watt (off mode) PI500 Coretronic Corporation...
  • Page 12 Agency approval -FCC-B, CE-B, VCCI-II , UL, CUL, TUV, Standard Package -the PI-500 contains the followings : LCD monitor with stand Power cord AC/DC Adapter User’s manual SoftWare *3 Pen house Figure of pen tweezers Battery *1 Coretronic Corporation PI500...

  • Page 13: Compatible Modes

    VESA XGA 1024 x 768 56.5 VESA XGA 1024 x 768 60.0 Apple Mac LC 640 x 480 34.9 Apple Mac II 640 x 480 35.0 Apple Mac 832 x 624 49.7 Apple Mac 1024 x 768 60.2 PI500 Coretronic Corporation...

  • Page 14: Chapter 2 Disassembly Of Procedure

    Disassembly Procedure Removing Front Cover and Control Board Lay PI500 facedown and unscrew 2 screws to remove the rubber feet. Push the stand back and use the plastic plate to separate the front cover from the main body. Plastic Plate...
  • Page 15 Unscrew 4 screws to lift up the panel module. Lift up the panel module, and unplug 2 cables to remove the front cover. Front Cover Unscrew 4 screws to remove the speakers. Unscrew 3 screws to remove the control board. Control Board Coretronic Corporation PI500...

  • Page 16: Removing Main Board

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

  • Page 17: Removing Inverter Board And If Card

    Unscrew 2 screws (as yellow circles show) and unplug 3 cables (as red circles indicate) to remove the inverter board. Inverter Board Unscrew 3 screws to remove the shielding plate and then unscrew 2 screws, and unplug 2 cables to remove the IF card. IF card Coretronic Corporation PI500...

  • Page 18: Removing Lcd Panel

    While using the knife, be careful not to scratch the LCD Panel. The double tapes can not be reused after being cut off. Protection Glass LCD Panel Removing Audio Board, Stand & Rear Cover Unscrew 2 screws and unplug a wire to remove the audio board. Audio Board PI500 Coretronic Corporation...
  • Page 19 Use the nipper to remove 3 lockers and unscrew one screw, then you can remove the 3 wires. Unscrew 4 screws to separate the stand from the rear cover and then unscrew 5 screws to disassemble the stand. Unscrew 4 screws to remove the holders. Coretronic Corporation PI500...

  • Page 20: Chapter 3 Troubleshooting

    Chapter 3 Troubleshooting Equipment Needed PI500 Monitor Philips Screw Driver #101 and #107 PC(Personal Computer) with XGA resolution. Sound Card. 8% ND Filter Touch Test Tooling (Arcylic) PI500...

  • Page 21: Main Procedure

    Start Power-on A. Power Circuit Power LED ok ? Troubleshooting Is display B. Performance performance ok ? Troubleshooting Is function C. Function adjustment ok ? Troubleshooting D. Speakers Are Speakers all Troubleshooting right? E. Touch Function Touch Function Troubleshooting PI500...
  • Page 22 B. Performance Troubleshooting Start Change Change Change Is screen black ? Inverter Board LCD Panel Main Board Change Change Is screen white ? Replug/Change LCD Panel Main Board FPC Cable Change Change Abnormal Color ? LCD Panel Main Board PI500...
  • Page 23 LCD Panel Change Change Bad Uniformity ? Inverter Board LCD Panel Adjust Change “Frequency” or Have line bar or Main Board “Auto Adjustment” noise? Refer Refer Adjust Change Ghost image ? “Frequency” or Notice Notice Main Board “Auto Adjustment” PI500...
  • Page 24 “Distribution”..After this action if Ghost image disappear, go to “Yes”; else, go to “No”. Notice 2 Check the compatibility on the computer. If it is compatibility problem, feedback the information to Coretronic; else, go to “No”. 3-2.3 C. Contorl Function Troubleshooting...
  • Page 25 3-2.5 E. Touch Function Troubleshooting Start Change Change Change IF Card Touch Pen LCD Panel Note: The Voltage of battery of Touch Pen must be higher than 1.2V. PI500...

  • Page 26: Function Test And Alignment Procedure

    Chapter 4 Function Test & Alignment Procedure Product PI500 Test Equipment Color Video Signal & Pattern Generator (or PC with XGA resolution) 8% ND Filter Touch Test Tooling (Arcylic) Hot Key Service Mode : Depress “Menu” and Power ON White Balance : Press “Menu”...

  • Page 27: Test Condition

    Before function test and alignment, each LCD Monitor should be run-in and warmed-up for at least 2 hours with the following conditions: In room temperature With full-white screen, R.G.B. Black With cycled display modes 640*480 (H=37.5kHz, V=75Hz) 800*600 (H=46.9kHz, V=75Hz) 1024*768 (H=60.0kHz, V=75Hz) PI500...

  • Page 28: Test Display Modes And Pattern

    48.4 VESA XGA 1024 x 768 56.5 VESA XGA 1024 x 768 60.0 Apple Mac LC 640 x 480 34.9 Apple Mac II 640 x 480 35.0 Apple Mac 832 x 624 49.7 Apple Mac 1024 x 768 60.2 PI500...
  • Page 29 / l e a i l e t i & e t i e t i Fine Line Morie Pattern (Figure 1) Gray Scale Pattern (Figure 2) Horizontal & Vertical Thickness Pattern (Figure 3) R. Color Pattern (Figure 4) PI500...
  • Page 30 G. Color Pattern (Figure 5) B. Color Pattern (Figure 6) Full White Pattern (Figure 7) Dark Screen Pattern (Figure 8) Black-White Pattern (Figure 9) PI500...

  • Page 31: Function Test And Alignment Procedure

    If not, readjust by the following steps : (a) Select and enter “Frequency” function to adjust the image to eliminate visual line bar. (b) Select and enter “Tracking” function to adjust the image to eliminate visual wavy noise. PI500...
  • Page 32 Test Pattern: Dark and White Screen Pattern Check and see if there are dead pixels on LCD panel with shadow gauge and filter film. The total numbers and distance of dead pixels should be compliant with the spec. Line defect is unacceptable. PI500...

  • Page 33: Cleaning

    After final QC step, we have to erase all saved changes again and restore the factory defaults. You should do “All Mode Reset” again. Cleaning Please use non-alcohol cleanser to clean LCD panel and cosmetics material with soft cotton. PI500...

  • Page 34: Firmware Upgrade Procedure

    P1: To RS-232 Cable JP1: to Power Adapter Power Adapter An additional monitor Flash Board (V3) JP4 Close JP3 Open P2 : To VGA Cable COM1: to RS232 Cable VGA Port RS-232 Cable (P/N:42.55907.001) Power Adapter (P/N:47.56001.501) VGA Cable (P/N:42.56109.001) PI500 Coretronic Corporation...

  • Page 35: Hardware Setup

    Hardware Setup JP3 of Flash Board must be open and JP4 must be closed (short). .Link VGA port of Flash Board and VGA port of PI500 with VGA Cable. .Link COM1 of PC and P1 of Flash Board with RS232 Cable.
  • Page 36 Step2. Click “Open File” button. Step 3. Select Firmware file, and then click “OK” button. PI500 Coretronic Corporation...
  • Page 37 *Note 1 Step 4. Click “Initial” button, and then click “OK”. Step5. Click “Program” button, and then waiting for “Download OK!!” message. Coretronic Corporation PI500...
  • Page 38 Step 6. Unplug Power Adapter of PI500 and then re-plug in again. Note 1: If the message is “Loader Error!!” 1. Click “OK.” 2. Click “Reset” button. 3. Check hardware settings and then go to Step 4. PI500 Coretronic Corporation...

  • Page 39: Ddc Key-In Procedure

    P1: Connected to JP1: Connected to An additional monitor COM1 of PC Power Adapter JP3 close JP4 open P2: Connected to VGA Port of PI500 COM1: to RS232 Cable VGA Port RS-232 Cable (P/N:42.55907.001) Power Adapter (P/N:47.56001.501) VGA Cable (P/N:42.56109.001)

  • Page 40: Hardware Setup

    Link COM1 of PC and P1 of Flash board with RS232 cable. Link VGA port of PC and to the additional monitor with VGA cable. Link P2 of Flash board and VGA port of PI500 with VGA cable. Plug Power Adapter into Flash Board.
  • Page 41 Step2. Key in Serial Number and then press ENTER button. Step 3. It will appear message “VGA Suc.” Step 4. Press “Shift” and “~” button on the keyboard. It will appear message “CheckSum OK!” and Serial Number. PI500 Coretronic Corporation...
  • Page 42 You must prepare two PC, one is for test “QC (p)99.exe”, another one is for calibration. If you change a Touch Pen in testing precess, you must re-plug in USB port. The resolution must be set to 1024*768@75Hz. PI500 Coretronic Corporation...
  • Page 43 Let Touch Pen in active area. Slide Touch Pen across Red-Square, Left-up, Right-down, in sequence. Use Touch Pen to click Blue-Square, Left-up, Right-up, Left-down, Right-down, in sequence. Use Arcylic Test Tooling to do draw test in sequence. Coretronic Corporation PI500...
  • Page 44 Calibration Step1. Click “USB Tablet” icon. Step2. Click “Calibration” icon. PI500 Coretronic Corporation...
  • Page 45 Step2. Click “+” icon. Coretronic Corporation PI500...
  • Page 46 Appendix A Exploded Overview PI500 DP.62101.01A PI500 Coretronic Corporation...
  • Page 47 Exploded Parts List Coretronic Corporation PI500...
  • Page 48 EX: A621338A0511K0043 This label “A621338A0511K0043” represents whole serial number for PI500 including the first version of BIOS and Main Board. It’s produced on the 38th week of 2003 for universal area and its serial code is 0043 and use AU panel.
  • Page 49 X = Month (ex: Jan. ~ Sept.=1~9, Oct.~Dec.=X, Y, Z) B1 = Version (ex: A1, A2...B1..etc.) SSSS = Serial Code (from 0001~) EX: HJ4M33A10001 This label “MN8M36A10005” represents Main board of version A1 for PI500 in March, 2003. Its serial code is 0001. Coretronic Corporation PI500...
  • Page 50 We expect you can offer us some pre- cious opinions for reference. Assessment: What do you think about the content after reading PI500 Service Manual? e l l i t c i t c &...

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