Table of Contents
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Panasonic Services Company
National Training
TH-42PHD5/TH-50PHD5
TH-42PHW5/TH50PHW5
GPH5D Chassis
Plasma Display Panel
Troubleshooting Guide
Warning
This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does
not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products
powered by electricity should be serviced or repaired only by experienced professional technicians. Any attempt to service or repair
the product or products dealt with in this service information by anyone else could result in serious injury or death.
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Table of Contents
Related Manuals for Panasonic GPH5D
Summary of Contents for Panasonic GPH5D
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Page 1: Troubleshooting Guide
Panasonic Services Company National Training TH-42PHD5/TH-50PHD5 TH-42PHW5/TH50PHW5 GPH5D Chassis Plasma Display Panel Troubleshooting Guide Warning This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians. -
Page 2: Table Of Contents
Objective...5 2002 Model Line Up...6 Specifications...7 Features...8 New Asymmetrical Cell Structure Panel ...9 Model Differences ...9 Disassembly ...11 Rear Cover Removal ...11 42” HD PCB Board Layout Diagram ...13 Printed Circuit Board Information Table ...13 50” PCB Board Layout Diagram ...14 42”... - Page 3 After Image Prevention ...53 Screen Saver Feature...53 Side Bar Brightness adjustment...54 Option Setting ...55 Accessing the Option Menu ...55 Hidden Option Menu for GPH5D series ...56 Sample Waveforms...58 HY/HZ board ...58 HX board...61 SC Board Input Signals...63 SC Board Waveforms ...64 SS-Board Input Signals...66...
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Page 4: Objective
Alignment and adjustment procedures are also included in this document. The Block diagrams and the schematic drawings reference the model TH- 42PHD5, but the technology is consistent with any GPH5D chassis. -
Page 5: 2002 Model Line Up
2002 Model Line Up 1366 x 768 XGA Resolution TH-50PHW5 50-inch (127 cm) TH-42PW5 42-inch (106 cm) HD Plasma Display HD Panel Digital Cinema Reality Advanced 3-dimensional Progressive Scan (UXGA Compatible) Wide Plasma Display Plasma Contrast Automatic Tracking System (C.A.T.S.) 3-Dimensional Progressive Scan VGA Resolution (UXGA... -
Page 6: Specifications
0.79 million pixels Pixel 0.898 (H) x 0.674 (V) pitch Relationship between Picture resolution and Scanning method: 768p > 720p > 680p = 1080i > 1024i Panasonic Company PI Progressive Progressive 1,366 x 768= 1,280 x 768= 0.98 million pixels 0.858 (H) x 0.808 (V) -
Page 7: Features
Features Pixel explanation SD (Standard Definition) Panel 852 pixels 410,000 Pixels Provides the optimum number of pixels for viewing standard broadcasts and DVD. HD (High-Definition) panel 1,024 pixels 790,000 pixels Reproduces even the tiniest details of high-definition sources and other high-quality images. Figure 1 480 pixels 768 pixels... -
Page 8: New Asymmetrical Cell Structure Panel
Scan Explanation Panasonic progressive scan The 1-field (1/60 sec) display pixels on the Panasonic 42" and 37" SD models and on the ALIS system models are VGA level. (Panasonic HD models are XGA level, for higher resolution.) A.L.I.S. (Alternate Lighting of Surfaces) method is one of the new panel driving systems of plasma display developed by Fujitsu Limited. - Page 9 Figure 4 •Simple and low cost circuit •High performance •Higher brightness Figure 5...
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Page 10: Disassembly
Disassembly Rear Cover Removal Remove the 27 screws, shown in Figure 6, and then pull away the rear cover. Figure 6 Removal of the shield Remove the six screws, shown in Figure 7, and then pull away the rear shield cover. Figure 8 Figure 7... - Page 11 Location of Lead Wiring High frequency electromagnetic signals can create electrical interference within the unit. Be sure to route all wires through their respective harnesses reference. The chart below is an illustration representing the connectors and the wire harnesses associated with them.
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Page 12: 42" Hd Pcb Board Layout Diagram
42” HD PCB Board Layout Diagram Printed Circuit Board Information Table Board Name Part Number TNPA2428 TNPA2429 TNPA2430 TNPA2431 TZTNP01LLSB TNPA2427 TNPA2444 TNPA2249 TZTNP01LLSU TXNHZ40JJS TXN/P10LLS TNPA2439 TNPA2440 TNPA2441 TNPA2442 TNPA2443 TNPA2283AC TNPA2434 TNPA2433 TNPA2435 TNPA2436 TNPA2437 TNPA2432 TNPA2282AC TNPA2445 Figure 10 Function Data Drive (Upper Left) -
Page 13: 50" Pcb Board Layout Diagram
50” PCB Board Layout Diagram Board Name Part Number TNPA2510 TNPA2511 TNPA2512 TNPA2513 TNPA2514AB TNPA2515 TNPA2608 TZTNP01MHSB TNPA2427AB TXN/F10MHS TNPA2249 TZTNP02KESE TXNHZ40JJS TXNP110MHS TNPA2566 TNPA2567 TNPA2568 TNPA2569 TNPA2570 TNPA2283AC TNPA2434AB TNPA2518 TXNSS10MHS TNPA2519 TNPA2520 TNPA2517 TNPA2282AC TNPA2445 Figure 11 Data Drive (Upper Left) Data Drive (Upper Center) Data Drive (Upper Right) Data Drive (Lower Right) -
Page 14: 42" Sd Pcb Layout Diagram
42” SD PCB Layout Diagram Board Name Part Number TNPA2540 TNPA2541 TZTNP01MMSB TNPA2589 TXN/F10MMS TNPA2249 TZTNP020JAS TXNHZ40JJS TNPA2598 TNPA2622 TNPA2534 TNPA2584 TNPA2535 TNPA2536 TNPA2537 TNPA2583 TNPA2621 TNPA2590 Figure 12 Data Drive (Lower Right) Data Drive (Lower Left) Format Converter Plasma AI Sub-Field Processor Line filter Speaker terminal PC type Input terminal... -
Page 15: Video Signal Path Explanation
Video Signal Path Explanation HY/HZ Board Figure 13 The "HY/ HZ" board is equipped with one Component input, one Composite input and one S-Video input. The Composite and S-Video inputs are applied to a switching circuit, which is controlled by the system control IC, located on the D1- Board. -
Page 16: Hx Board
HX Board Figure 14 PC RGB Signals are input to the HX Board. The RGB signals as well as the vertical and horizontal sync signals are amplified by a series of transistor amplifiers. The RS232C communications bus line is also connected on this board. -
Page 17: D1 Board
D1 Board Figure 15 After the input signals are amplified by the HY/HZ and HX boards the desired signal is selected. The microprocessor sends the command via the IIC bus to the input select switch (IC3001). The video switch selects from one of the three inputs. -
Page 18: Dvi Interface
DVI Interface Figure 16 An optional Digital Visual Interface (DVI) module connection is provided on this generation Plasma Display Panels. The DVI interface allows direct digital transfer from a display device to the panel. A VGA or component video signal requires a conversion from the digital to analog and then... - Page 19 Figure 18 shows an example of the DVI interface. It permits direct connection of the digital video signal to the Format converter. This bypasses the D/A and A/D process Figure 18 providing the better quality picture. Installation of the DVI interface requires removal of the HY/HZ Board and replacing it with an optional DVI interface board.
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Page 20: Sync Process
Sync Process Figure 19 The vertical and horizontal sync signal paths are slightly different depending on the Source signal. RGB/PC Input Mode Sync The vertical and horizontal sync signals generated by the input device are applied to connector D3 or D2 to a Sync switch (IC3002). IC3002 outputs the vertical and horizontal sync signals. -
Page 21: D1 Board
D1 Board Figure 20 D1-board consists of the Analog and Digital signal process. It also contains the Discharge control and Microprocessor control block. Supply voltages of 13.5V, 5V, Standby 5V, 3.3V, and 1.8 V operate the D1-board. The input RGB video signals are at 0.7Vp-p. -
Page 22: D2 Board
D2 Board Figure 21 The D2 board provides the scan, sustain and data drive signals. The scan pulses are output to the SC board. The sustain pulses are output to the SS board. The data drive signals are output to the C1, C2, C3 and C4 boards. The C1 board drives the Upper right portion of the panel;... -
Page 23: D2 Board Details
D2 Board details Figure 22 The Plasma AI (Adaptive brightness Intensifier) circuits analyze the video program level for the distribution of dark and bright components. The upper and lower eight bit video signals are memorized into two Plasma AI processors IC9651 and IC9601. -
Page 24: Sc Board Explanation
SC Board Explanation Figure 23... - Page 25 Figure 24 The SC Board consists of buffers and drivers used to generate the scan signals to the panel. The buffers provide isolation between the D2 board and the drivers. Connector SC20 provides the drive signals (140V, 100V and 18V). Connector SC21 provides trigger signals to switch the FET transistors.
- Page 26 Figure 25 After the scan waveform is developed on the SC Board, it is applied to the SU and SD boards for de-multiplexing. The signal is input to a series of shift registers inside the PDP scan driver IC. Figure 25 shows an example of the de- multiplexing circuit.
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Page 27: Ss Board Explanation
SS Board Explanation Figure 26 After the video signal is processed on the D2 board, the sustain and erase pulses are output to the SS board. The erase pulse is output at the beginning of each scan period. The pulse is applied to the SS2 and SS3 boards to remove the previous charge for the upper and lower sections of the display panel. - Page 28 Figure 27 Figure 28...
- Page 29 The Sustain pulse is developed using a similar circuit as the Scan Pulse. A series of specifically timed pulses are applied to FET drivers creating the distinctive sustain pulse. The drivers switch the voltages (150V, 155V and 175V) at selected intervals determined by the D2 board.
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Page 30: Power Supplies
Power Supplies Standby Power Supply Figure 29 The standby power supply provides the necessary DC voltage for the system control Microprocessor, Reset circuit and the EEPROM. D421 rectifies the incoming AC Voltage and applies it to the transformer T402 and the standby B+ control circuit IC400. -
Page 31: Main Power Supply
Main Power Supply Figure 30 Power Factor Control The power factor control circuit operates like a boost regulator. The incoming AC voltage, after being switched on, enters the rectifier D402 where it is converted to DC. The Power Factor Control (PFC) circuit converts the DC level to 400Vdc. The negative side of the bridge rectifier D402 connects to ground via a resistor. -
Page 32: Low Voltage Power Supply
Low Voltage Power supply VCC and Start-up voltage for the low voltage power supply is provided to IC650 of the P5 Board by the standby power supply circuit (not shown). Upon start-up of the switching control circuit, a pulse width modulated signal is output at pin 9 of connector P18/P18A to drive the switching transistor Q416. -
Page 33: High Voltage Power Supply
High Voltage Power Supply Figure 31 The P3-Board contains the drive voltage oscillator circuit that develops the Vsus voltage needed to drive the Scan and Sustain boards. Operation begins with the 18Vdc supply being applied to pin 12 of connector P15. This voltage serves as start up voltage for IC601. - Page 34 Over-voltage protection (OVP) is provided via pin 6 of connector P16. This voltage enters pin 4 of IC601 for immediate shutdown of the IC if the Vsus voltage rises to an undesired level. The OVP feedback is also provided to the system control circuit via pin 13 of connector P15 for immediate shutdown of the entire unit.
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Page 35: Protection Circuits
Protection Circuits Figure 32 Protection circuits are incorporated in the unit to prevent the failure of a single circuit or component from creating catastrophic damage. The P7 and P8 boards are daughter boards on the P1 main power supply board. The P7 board monitors the Vbk (195V), Vda (75V) and +17V supply voltages. - Page 36 the result is compared to a reference voltage. The reference voltage is provided by a zener diode. If the output of the comparator goes high, Q6741 turns on effectively grounding the SOS line. The SC board uses a similar circuit to monitor the +17V line.
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Page 37: Diagnostic Procedures
Diagnostic Procedures Self Check Display Indication Self-check is used to automatically check the bus line controlled circuits of the Plasma display. To get into the Self-check mode, press and hold the Volume Down button on the front of the unit, then the OFF-TIMER button on the remote control. -
Page 38: Power Led Flashing Timing Chart
Power LED Flashing timing chart When an abnormality has occurred in the unit, the protection circuit operates and shuts off the power supply. The faulty area can be identified by the number of flashes of the Power LED at the front of the unit. -
Page 39: Diagnostic Flow Charts
Diagnostic Flow Charts No Power There are three states of “No Power” indication by the power LED: The power LED does not light up. The power LED is green at power up. It then turns red a few seconds later and blinks on and off. -
Page 40: The Power Led Is Red And Blinking On/Off
The Power LED is red and blinking on/off. When one or more of the power supply voltages is missing, the red LED blinks on and off. Blinking stops But still no picture Check the output of the P-Board. Remove Connector P5 Is the LED still blinking red? Check D1-Board. -
Page 41: Power Led Blinks Twice
Power LED blinks twice Are the SS board LEDs lit? The SS board is suspected to be defective. Is the SC board LED lit? The SC board is suspected to be defective. Is the Vda voltage correct? The Power supply is suspected to be defective. -
Page 42: No Picture Flowchart 1
No Picture Flowchart 1 Is the On screen Display information visible? Does the problem exist on all inputs? Is the SC Board LED illuminated? SC Board is probably defective. SS Board is probably defective. Does the problem exist on Composite video? HZ Board is probably defective... -
Page 43: No Picture Flowchart 2
No picture Flowchart 2 Are the video signals correct at the D1 board input? Is the SC board Is the TPSC1 Waveform incorrect? Are the voltages at connectors SC2 and SC23 of the SC board correct? Are the trigger signals at connectors SC20 and SC21 of the SC board correct? The SC Board is suspected... -
Page 44: Dark Picture Flowchart
Dark picture Flowchart Are the video signals correct at the D1 board input? Are the SS board LEDs lit? Is the TPSS1 Waveform incorrect? Are the voltages at connectors SS11 and SS12 of the SS board correct? Are the trigger signals at connector SS33 of the SS board correct? The SS Board is suspected... -
Page 45: Local Screen Failure
Local screen failure The Plasma Display Panel unit may develop a failure, where the symptom is localized in a particular area of the screen. The figure below can help localize the circuit board that is most likely to be defective. In the example in figure 34, one of the two boards, C3 and D2 is likely to be the cause. - Page 46 2. Listen to the buzz noise of the SC board; if the buzz noise is not present, a malfunction of the SC-Board is suspected. Figure 36 Suggestions: Check the Scan pulse waveform at TPSC1. (Use TPSS1 of the SS-board to trigger the oscilloscope.) Verify the input signals at connector SC2, SC4, SC20 and SC21.
- Page 47 Symptom: No picture (black Screen) Figure 38 v Suggestion: The use of a magnifying glass can help localize the defective printed circuit board. Use the magnifying glass to take a close look at the pixels of the screen. If the pixels are faintly lit, the defect is most likely located in one of the following boards: A) SS-Board...
- Page 48 Suggestions: Check the Scan pulse waveform at TPSC1 of the SC-Board. (Use TPSS1 of the SS- board to trigger the oscilloscope.) Proceed to check the power sources at connector SS11, SS12 and SS33. Verify that the clock and serial data lines from the D- board are present at connector SS33.
- Page 49 Symptom: Horizontal Black Bar (Completely dark) Note: The use of a magnifying glass can help localize the defective printed circuit board. Use the magnifying glass to take a close look at the pixels in the area of the black bar. 1 If the pixels are totally dark, the defect is most likely located in one of the following boards:...
- Page 50 Symptom: Vertical Black Bar Suggestion: Since the C2 board contains the serial to parallel converters for the picture data that drive this portion of the screen; the most likely cause for this defect can be localized to the C2-Board or the D2-Board.
- Page 51 Symptom: Burned image (pattern) is visible. Suggestion: Activate the scroll bar or run the set with a white raster for at least fifteen minutes. Panasonic Figure 44...
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Page 52: After Image Prevention
After Image Prevention If a customer has been viewing a 4:3 picture or another stationary pattern for a long period of time it is possible for an after image to be burned into the panel. Advise the customer that operation in 4:3 mode for a long period can cause a permanent image burn, damaging the panel. -
Page 53: Side Bar Brightness Adjustment
4. To stop the screen saver, press the R button on the remote control. Side Bar Brightness adjustment This feature allows the customer to adjust the brightness of the non-picture area on either side of the 4:3 image on screen. 1. -
Page 54: Option Setting
Option Setting Accessing the Option Menu Press to display the Setup menu. Press to select OSD Language. Press the surround button on remote control for more than three seconds. The action menu should be displayed on screen. Figure 56 Figure 57 Figure 58... -
Page 55: Hidden Option Menu For Gph5D Series
Press the R button to exit the Option Menu. Hidden Option Menu for GPH5D series GPH5D chassis series have special function and operation setting facility that is called “Option Menu”. This Option Menu is useful for special functions that are required by certain customers. - Page 56 Note: Setting the remote control User Level and Remote ID off. 1. Access service mode (CAT-mode) and press SET UP key on remote. 2. Access the hidden option menu. 3. Change the remote control User Level and/ or Remote ID set to off.
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Page 57: Sample Waveforms
Sample Waveforms HY/HZ board The pages that follow contain samples of waveforms that are present when the unit is in good operating condition. Prior to determining that a board should be replaced, it is advisable that these waveforms are checked to help achieve the right conclusion. - Page 58 The waveforms listed below must be checked at connector H2 of the HZ- CN H2, Pin B1 20us/div., 20mV Green Signal Output CN H2, Pin A6 20us / div., 0.2V Horizontal Output Note: If any of the signals shown here is missing, this indicates a possible malfunction of the HZ-Board.
- Page 59 The waveforms listed below must be checked at connector H2 of the HZ- Board. CN H2, Pin B17 CN H2, Pin B15 CN H2, Pin B19 5us /div, 20mV 5us /div, 20mV 5us/div 20mV Blue Signal input Red Signal Input Green Signal Input CN H2, Pin A19 CN H2, Pin A20...
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Page 60: Hx Board
HX board Figure 62 Figure 62 is an illustration of the HX-Board. The board is the interface between the PC input and the D1-Board. When troubleshooting, connect a PC to the input terminals and observe the output signals at connector HX1/D3. See the next page for waveform samples. - Page 61 Note: The signals listed below must be checked at connector HX1 of the HX- Board. CN HX1, Pin B20 10us / div.20mV Red Signal Input CN HX1, Pin B12 5ms/ div, 0.2V Vertical Drive Note: A possible malfunction of the HX-Board may exist if any of the signals listed on this page is missing.
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Page 62: Sc Board Input Signals
SC Board Input Signals Figure 63 Figure 63 is an illustration of the SC-Board connection to the remaining boards of the panel. The SC-board is the interface between the D2-Board, SU and the SD Boards. When troubleshooting, connect a fixed video source to any of the input terminals and observe the input signals at connector SS20 and SS21. -
Page 63: Sc Board Waveforms
SC Board Waveforms The waveforms listed below must be checked at connector SC20 of the SC- Board. CN SC20, Pin 1 1ms / div, 0.2V CN SC20, Pin 6 1ms / div, 0.2V CN SC20, Pin 9 1ms / div, 0.2V CN SC20, Pin 2 1ms / div, 0.2V CN SC20, Pin 7... - Page 64 The waveforms listed below must be checked at connector SC21 of the SC- Board. CN SC21, Pin 2 1ms / div, 0.2V CN SC21, Pin 6 1ms / div, 0.2V CN SC21, Pin 9 1ms / div, 0.2V CN SC21, Pin 3 1ms / div, 0.2V CN SC21, Pin 7 1ms / div, 0.2V...
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Page 65: Ss-Board Input Signals
SS-Board Input Signals Figure 64 Figure 64 is an illustration of the SS-Board connection to the remaining boards of the panel. The SS-board is the interface between the D2-Board, SS2 and the SS3 Boards. When troubleshooting, connect a fixed video source to any of the input terminals and observe the input signals at connector SS32. -
Page 66: Ss Board Waveforms
SS Board Waveforms The waveforms listed below must be checked at connector SS32 of the SS- Board. CN SS32, Pin 2 1ms / div, 0.2V CN SS32, Pin 5 1ms / div, 0.2V CN SS32, Pin 8 1ms / div, 0.2V CN SS32, Pin 3 1ms / div, 0.2V CN SS32, Pin 6... -
Page 67: Pdp Defect Pixel Specification
PDP Defect Pixel Specification 1. Dead Pixel (pixel is always off) 2. Lit Pixel (pixel is always 3. Pair defect (Adjacent pixels defective) 4. Defects Distance (Distance between nearest two defective pixels) Zone Lit Pixel Check Zone Zone A Zone B Specification Dead Pixel Single Defect... -
Page 68: Connector Tables
Connector Tables F-BOARD CONNECTORS The following table lists the voltage levels present at each pin of the connectors of the F-Board. Use this information to confirm that the F-Board is operating properly. Connector F1 Pin Numbers Connector F9 Pin Numbers P-BOARD CONNECTORS The following table lists the voltage levels present at each pin of the connectors of the P1-Board. - Page 69 P-BOARD CONNECTORS (Continued) Connector P3/SS3 Pin Numbers Connector P4/SC4 Pin Numbers Connector P5/D25 Pin Numbers Connector P6/Z6 Pin Numbers Connector P7/D27 Pin Numbers Signal Name (Board or Connector) P3---àSS3 (SS-BOARD) P3---àSS3 (SS-BOARD) P3---àSS3 (SS-BOARD) +17V P3---àSS3 (SS-BOARD) GNDa P3---àSS3 (SS-BOARD) GNDa P3---àSS3 (SS-BOARD) GNDa...
- Page 70 Connector P10/FAN Pin Numbers Connector P11/FAN Pin Numbers Connector P12/FAN Pin Numbers Connector P13/FAN Pin Numbers Connector P15/P15A Pin Numbers Connector P16/P16A Pin Numbers Signal Name (Board or Connector) FAN +12V FAN SOS Signal Name (Board or Connector) FAN +12V FAN SOS Signal Name (Board or Connector)
- Page 71 P-BOARD CONNECTORS (Continued) Connector P18/P18A Pin Numbers Connector P19/P19A Pin Numbers Connector P22/P22A Pin Numbers Signal Name (Board or Connector) STOP P18---àP18A (P1-BOARD) P18---àP18A (P1-BOARD) START P18---àP18A (P1-BOARD) P18---àP18A (P1-BOARD) GATE P18---àP18A (P1-BOARD) P18---àP18A (P1-BOARD) H. GND P18---àP18A (P1-BOARD) P18---àP18A (P1-BOARD) C.L.M.
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Page 72: Hx- Board Connectors
HX- BOARD CONNECTORS The following table lists the voltage levels present at each pin of the connectors of the HX-Board. Use this information to confirm that the HX-Board is operating properly. Connector Signal Name HX1/D3 Pin Number A-10 A-11 A-12 A-13 A-14 A-15... -
Page 73: Hy / Hz- Board Connectors
HY / HZ- BOARD CONNECTORS The following table lists the voltage levels present at each pin of the connectors of the HY or HZ -Board. Use this information to confirm that the HY or HZ-Board is operating properly. Connector Signal Name H1/D1 Pin Number 3.3V... -
Page 74: Adjustment Procedures
Adjustment Procedures Panel label Information Vbk: **** V Ve: **** V Panel Production Date An example of the panel production date: Month Year January February March September October November December 1999 2000 2001 MC106W36P4 NO. ************* Vsus: **** V Vad: **** V Made in Japan Figure 65 Beginning of July 2001... -
Page 75: B Set-Up
+B Set-up Item / Preparation Input a Black & White video signal. Set the picture mode to Normal and the White Balance to Normal Adjustments Adjust and confirm the indicated test point below for the specified voltage. Adjustment table Name Test Point P24 pin 1 Vsus... -
Page 76: Driver Set-Up
Driver Set-up Item / Preparation Input an APL 100 % white signal. Set the picture mode to Normal and the White Balance to Normal Adjustments To perform the following adjustments, please refer to the panel information label located on the heat sink of the panel. See the next page for more information about the panel label. -
Page 77: Initialization Pulse Adjust
Initialization Pulse Adjust Item / Preparation Input a Crosshatch signal. Set the picture mode to Normal and the White Balance to Normal Adjustments Adjust the indicated test point for the specified waveform. Use TPSS1 as the trigger source. Test point TPSC1 (SC) R6523 (SC-Board) TPSC1 (SC) -
Page 78: P.c.b. (Printed Circuit Board) Exchange Procedure
P.C.B. (Printed Circuit Board) exchange procedure 1. Caution Wait 1 minute for the electrolytic capacitors to discharge before removing any PCB from the unit. 2. Quick adjustment after P.C.B. exchange P.C.B. Item P Board R548 (P3) Vsus R625 (P3) R545 (P1) SC Board R6477 (SC) R6670 (SC) -
Page 79: Test Point Locations
Test Point locations Figure 69... -
Page 80: Serviceman Mode
Serviceman mode CAT (computer aided test) Mode CAT mode menu CAT Panel Mode sys8.1 IIC Mode CD Mode (Complete Diagnostics) SD (Status SD Mode Display) MS Mode MS Mode ID Mode Remote Control Status VOL Up/Dow n Return VOL Up/Dow n Left/Right Action switch off the main power. -
Page 81: Cd Mode
CD mode Select the CD mode from the front page of the CAT menu by pressing the Up/Down button on the remote control, and then press the Mute button on the remote control for more than 5 sec. MiCom Software version MiCom Software Version Memory data version D Memory data version D... -
Page 82: Sd Mode
SD Mode Select the SD mode from the front page of the CAT mode by pressing the Up/Down button on the remote control, and then press the Action button on the remote control. Input command Check 23 25 27-- -- -- -- 27 27 27 -- -- -- -- -- -- -- 28 25 25 37 Power Protect MTBF Parameter... -
Page 83: I 2 C Menu Structure
C Menu Structure The values indicated in this flowchart are sampled data. Figure 70... -
Page 84: Alignment Procedures
Alignment Procedures NTSC Panel White Balance Equipment required: NTSC Gray scale pattern Generator, Color Analyzer Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9 Pattern Display: Step 1 Find the area of Low light closest to 10 cd/m2 using the color sensor. -
Page 85: Pedestal Setting
Pedestal Setting Equipment required: HDTV Component Video Gray scale pattern Generator, PC Video Gray Scale Generator Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9 Pattern Display: Step 1- Access the R, G and B cutoff settings and set them to “80”. Step 2- Under the Chroma Control setting, Set Gun off to "5"... -
Page 86: Pc/Rgb Panel White Balance
PC/RGB Panel White Balance Equipment required: PC Gray scale pattern Generator, Color Analyzer Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9 Pattern Display: Step 1 Find the area of Low light closest to 10 cd/m2 using the color sensor. - Page 87 Step 15- Write down the color temperature of the R, G, B drive and cutoff data into table 3. Table 3 White Balance Cool Normal Warm R Drive G Drive B Drive R Cutoff G Cutoff B Cutoff Step 16- Input a RGB Signal. Step 17- Copy the PC Data R, G, B drive and cutoff data to the RGB settings.
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Page 88: Hd /525I /525P Panel White Balance
HD /525i /525P Panel White Balance Equipment required: HDTV (720P or 1080I) grayscale pattern Generator, Color Analyzer Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9 Pattern Display: Step 1 Find the area of Low light closest to 10 cd/m2 using the color sensor. - Page 89 Step 15- Write down the color temperature of the R, G, B drive and cutoff data into table 5. Table 5 White Balance Cool Normal Warm R Drive G Drive B Drive R Cutoff G Cutoff B Cutoff Step 16- Change the Input signal to 525i and 525p. Step 17- Copy the HD drive and cutoff data to the 525i and 525p settings.
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Page 90: 625I Panel White Balance
625i Panel White Balance Equipment required: HDTV (625i) grayscale pattern Generator, Color Analyzer Panel Settings; Picture = Normal, White Balance = Cool, Aspect Ratio = 16:9 Pattern Display: Step 1 Find the area of Low light closest to 10 cd/m2 using the color sensor. -
Page 91: Sub Brightness Setting
Sub Brightness Setting Equipment required: NTSC grayscale pattern Generator Panel Settings; Picture = Normal, Aspect Ratio = 16:9 Pattern Display: Note: Adjust in a Dark room. Step 1- Set the white balance to Cool. Step 2- Access the All cutoff setting in service mode and adjust so that pixel emission starts in the 2% area and there is no emission in the 0% area.