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Panasonic Viera TC-L42D2, Technical Manual

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Panasonic Viera TC-L42D2 Technical Manual Download Page 57

Slide # 57

4 Blinks SOS Circuit

When the unit is turned on, the DTV source of the P board is provided to the A board for conversion
into other voltages. A zener diode at the base of transistor Q5613 protects against over-current condition.
When the DTV12V source drops to a predetermined level, the zener diode turns off causing Q5613 to
turn off and Q5612 to turn on. The input to IC8001 goes low resulting in the shutdown of the unit and 4 
blinks of the power LED. 

Summary of Contents for Viera TC-L42D2

Page 1: ...aining Panasonic Service and Technology Company 2010 LCD TV Technical Guide 2010 LCD HD FHD TV 13th Generation TC L42D2 TC L37D2 TC L42U25 TC L37U22 TC L32U22 TC L37X2 TC L32X2 TC L22X2 TC L37C22 TC L32C22 Applies to models TTG100618JM 100720 ...

Page 2: ...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 Copyright 2010 by Panasonic Service and Technology Company All rights reserved Unauthorized copying and distribution is a v...

Page 3: ...ice Mode 60 TC L37D2 Board Layout 20 Service Mode Menu D2 Series 61 TC L37D2 P Board Pictorial 21 D Series Measurements and Adjustments 62 TC L37D2 A Board Pictorial 22 How to Enter the Service Mode_ SRV TOOL 63 TC L37D2 TC Board Pictorial 23 How to Enter the Self check Mode 64 Standby Power_ All except D2 Series 24 Troubleshooting Picture Problems All Series except D 65 Standby Power_ D2 Series 2...

Page 4: ... Operation A Stand by Operation B Power On Operation C Voltage Distribution 3 SOS Detect 4 Signal process Circuit A Video Signal B Audio Signal 5 Service Notes A Service Mode B SRV TOOL C Self check D SD card 6 Troubleshooting 7 Glossary ...

Page 5: ...ul viewing from virtually any angle Colors appear uniform and consistent even when viewed from a wide angle so images look fresh and natural no matter where you re sitting The panel s high light transmittance also maximizes the efficiency of the LED backlight VA System IPS System Highlights ...

Page 6: ...ht beautiful images that make VIERA such outstanding entertainment while also saving energy Intelligent Scene Controller Intelligent A I conducts a detailed analysis of image motion and brightness information to optimize the backlight brightness This creates sharp images by faithfully reproducing the brightness of each scene while keeping the power consumption low Highlights ...

Page 7: ...9 models are as follows Audio processor Micom HDMI de multiplexer and video signal processor are integrated to IC8001 Nile Tcon IC4510 was eliminated IC8300 Digital demodulator was eliminated Tuner power BT30V was eliminated Tuner is operated by only 5V P4 terminal is integrated to P2 terminal A20 terminal is integrated to A03 terminal ...

Page 8: ...onally HDTV and the TC L42D2 a 42 inch class 41 6 measured diagonally HDTV The LED method of backlighting the LCD panel allows for the HDTVs to become extremely thin and offers a wider color gamut than traditional back lit LCDs which use fluorescent bulbs to provide the light source Combined with the IPS panel the viewing angle is improved contrast is also improved and there is lower power consump...

Page 9: ...re considered a more sustainable choice with a longer life and better energy efficiency than plasmas and conventional LCD TVs Unlike CCFL backlights LEDs also use no mercury in their manufacture However other elements such as gallium and arsenic are used in the manufacture of the LED emitters themselves meaning there is some debate over whether they are a significantly better long term solution to...

Page 10: ... Focus Technology 2 000 000 1 Dynamic Contrast with Intelligent Scene Controller Fine Black Panel VIERA Image Viewer JPEG VIERA Link Game Mode PC Input Universal Dock for iPod Included Lower Power Consumption VIERA Image Viewer JPEG 2 3 4 120Hz Motion Picture Pro4 Wide Viewing Angle with IPS Alpha Panel TC L37D2 TC L42D2 42 37 1 LED Backlight 2010 D Series ...

Page 11: ...C L42U25 Only Wide Viewing Angle with IPS Alpha Panel 20 000 1 Dynamic Contrast with Intelligent Scene Controller Fine Black Panel VIERA Image Viewer JPEG VIERA Link Game Mode TC L42U25 Only PC Input 1 2 VIERA Image Viewer JPEG Wide Viewing Angle with IPS Alpha Panel TC L32U22 TC L37U22 37 32 TC L42U25 TC L42U22 42 2010 U Series ...

Page 12: ...nel 20 000 1 Dynamic Contrast with Intelligent Scene Controller Fine Black Panel Universal Dock for iPod Included VIERA Image Viewer JPEG VIERA Link Game Mode PC Input 1 2 3 VIERA Image Viewer JPEG Universal Dock for iPod Included VIERA Link TC L32X2 TC L37X2 TC L22X2 TM 37 32 26 2010 X Series ...

Page 13: ...HD 720P Wide Viewing Angle with IPS Alpha Panel 18 000 1 Dynamic Contrast with Intelligent Scene Controller Fine Black Panel VIERA Image Viewer JPEG VIERA Link PC Input 1 2 VIERA Image Viewer JPEG VIERA Link TC L32C22 TC L37C22 TM 37 32 2010 C Series ...

Page 14: ...s 120 Hz Y Motion Picture Pro 4 Y Motion Picture Pro 4 24p Smooth Film Y Y Motion Focus Technology Y Y JACKS Integrated ATSC Tuner ATSC QAM NTSC ATSC QAM NTSC ATSC QAM NTSC ATSC QAM NTSC ATSC QAM NTSC VIERA Image Viewer Y JPEG playback Y JPEG playback Y JPEG playback Y JPEG playback Y JPEG playback HDMI Input 3 1 side 3 1 side 3 1 side 3 1 side 2 Audio Input for Video 2 1 side 2 1 side 2 1 side 2 ...

Page 15: ...method of backlighting the LCD panel allows for the LED LCD HDTVs to become extremely thin and offers a wider color gamut than traditional back lit LCDs which use fluorescent bulbs to provide the light source Combined with the IPS panel the viewing angle is enhanced contrast is also improved and there is lower power consumption The D2 series also features the proprietary Universal Dock for iPod th...

Page 16: ...0p lines of resolution The LCD X2 series includes the Universal Dock for iPod in its three screen sizes and introduces a new 22 inch screen size TC L37X2 a 37 inch class 37 measured diagonally HDTV TC L32X2 a 32 inch class 31 5 measured diagonally HDTV and TC L22X2 a 22 inch class 21 6 measured diagonally HDTV In addition to the Universal Dock for iPod the X2 models include the VIERA Image Viewer ...

Page 17: ...V Board Remote Receiver LED P Board Power AC DC DC DC Control Panel Assembly Control Button Power switch K BOARD TC L37U22 Board Layout P A LVDS P2 P１ P6 A03 A22 A11 A04 A10 V Key scan To Speaker STB5V Sound15V DTV 12V SUB ON Inverter_ON INV_SOS V10 P5 To FL Power LED Remote RX Control Panel ASSY K ...

Page 18: ...ut P A P2 CNAC A21 A03 A11 A04 A10 Key scan To Speaker STB5V Sound15V F15V SUB ON Backlight ON SOS CN01 To LED backlight Control Panel Assy TC CN02 TC05 TC06 TC04 TC01 PWM LVDS V To Panel Control V10 Power LED Remote receiver K K1 ...

Page 19: ...er Non Serviceable V Board Remote Receiver LED TC Board T CON Non Serviceable P Board Power AC DC DC DC Non serviceable P Board should be exchanged for service Control Panel Assembly Control Button Power switch Non serviceable Control Panel Assembly should be exchanged for service TC L37D2 Board Layout P BOARD A BOARD TC BOARD ...

Page 20: ...Slide 20 TC L37D2 P Board Pictorial Non serviceable 1 Power AC DC DC DC 2 P Board should be exchanged for service LED POWER CONNECTOR _DC OUPUT _COMMAND_IN AC INPUT ...

Page 21: ...e Nile Tcon System Control 1 Audio Input Terminal Audio Processor Audio Amplifier Speaker out 2 Video Input Terminal HDMI in SD Card PC in iPod in Component Input Video Input Tuner TV Reception Digital Signal Processor LVDS Output 3 A Board should be exchanged for service ...

Page 22: ...ol IC TCON to convert the RGB data into serial streams for processing by the drivers of the LCD panel The drivers are mounted on circuit boards to the top and side of the panel Shift registers and drivers provide the drive signals to the rows and columns of pixels on the panel The TCON IC produces the data that drives the LCD panel LVDS Receiver Timing Control TCON IC9201 ZWEI2 IC9006 ...

Page 23: ...connector P2 The STB 5V enters the application specific integrated circuit ASIC IC4700 for conversion to STB3 3V The STB3 3V is applied to IC8001 to energize and prepare the internal microprocessor for program execution The 3 3V from the voltage regulator is also applied to the remote control receiver and the power LED on the K board through Pin 3 of connector A10 If the STB5V is missing the TV is...

Page 24: ...tegrated circuit ASIC IC4700 for conversion to STB3 3V The STB3 3V is applied to IC8001 to energize and prepare the internal microprocessor for program execution IC8001 outputs the iPod POWER_ON command to turn on the switch that provides STB5V to the iPod connector The 3 3V from the voltage regulator is also applied to the remote control receiver and the power LED on the K board through Pin 5 of ...

Page 25: ...Slide 25 Power on Part 1_ All Except D2 ...

Page 26: ...he power relay The STB5V enters the power supply board via pin 11 of connector P2 The TV_SUB_ON command is also provided to the power supply to activate a circuit that provides a ground connection to the relay When the relay is closed the switched mode supply goes in operation to create the Sound15V and DTV12V The DTV12V is regulated to other voltages to power the A Board Caution All boards in the...

Page 27: ...Slide 27 Power On Part 2_ All Series Except D2 ...

Page 28: ... applied to IC5606 for conversion to SUB1 8V IC5610 also converts the F15V to SUB1 2V The sub voltages are mainly used to power the A Board They are all monitored by the IC4700 and subsequently IC8001 for their presence If any of the sub voltages is missing the MPU shuts down the TV and the power LED blinks 3 times IC5605 and IC5013 convert SUB 5V to SUB 3 3V When IC8001 is satisfied of the presen...

Page 29: ...Slide 29 Power on Part 1_ D2 Series The difference in this drawing is the pin numbers of connector A03 ...

Page 30: ...Slide 30 Power On Part 2_ D2 series ...

Page 31: ...ion to SUB5V The F15V is also applied to IC5606 for conversion to SUB1 8V IC5610 also converts the F15V to SUB1 2V The sub voltages are mainly used to power the A Board They are all monitored by the IC4700 and subsequently IC8001 for their presence If any of the sub voltages is missing the MPU shuts down the TV and the power LED blinks 3 times IC5605 and IC5013 convert SUB 5V to SUB 3 3V When IC80...

Page 32: ... on This command is used to turn on the circuit in the power supply that generates F15V and Sound 15V F15V is provided to the A board to generate the sub voltages used by the signal process circuit The outputs of the sub voltages 5V 1 8V and 1 2V are confirmed by ASIC IC4700 Backlight ON After receiving SUB3 3V 1 8V 1 2V Backlight ON command is applied to the P board power supply from Nile TCON IC...

Page 33: ...Slide 33 TC L32U22 Inverter Circuit and 1 Blink SOS ...

Page 34: ...P6 P7 and P8 To avoid catastrophic failures when the inverter circuit is defective the INV_SOS command is output to IC8001 to trigger the shutdown of the TV The power LED blinks one time The same operation takes place when there is an impedance mismatch between the Panel and the inverter IC7800 is the controller IC7801 is the oscillator that provides the switching signals to the transistors Q7801 ...

Page 35: ...Slide 35 LED Backlight Control ...

Page 36: ...ve signals The inverter control signal PWM is delivered by the TCON board at pin 15 of connector P2 to control the brightness of the LEDs The inverter is responsible for controlling the amount of current passing through the LEDs To avoid catastrophic failures when the inverter circuit is defective the BACKLIGHT_SOS command is output to IC8001 to trigger the shutdown of the TV The power LED blinks ...

Page 37: ...l data IC8001 Nile TCON Resize IP conv Signal Processor IC8001 Nile TCON Resize IP conv Signal Processor LVDS Analog VIDEO DATA CN A22 All Models Except D Series OSD To LCD Panel U and X Series Video Signal Process Circuit Composite S Video Component HDMI JPEG PC A ...

Page 38: ... undergo A D analog to digital conversion only Digital television reception of the tuner is output in the form of an IF Intermediate Frequency signal The transport stream from the tuner enters the VSB I F Interface section of IC8001 where the video signal is extracted and converted to RGB data The output is provided to the Video Input I F for selection The JPEG data of the SD card enters the JPEG ...

Page 39: ...rocessor IC8001 Nile TCON Resize IP conv Signal Processor LVDS Analog OSD D Series Video Signal Process Circuit Composite S Video Component HDMI JPEG PC iPod TC05 13 A21 TC A LVDS 24 29 40 41 28 25 12 IC9006 ZWEI2 IC9006 ZWEI2 IC9201 T CON IC9201 T CON LVDS TC01 27 40 TC04 21 34 T O L C D P A N E L R Side L Side ...

Page 40: ...ocess circuit The Video Process section of the IC performs all picture control operations such as brightness contrast color tint etc On Screen Display data such as channel numbers Digital TV closed caption and picture adjustments are mixed with the video data The RGB data is then converted to dual 14 bit LVDS Low Voltage Differential Signaling and output to the LCD panel IC8001 handles all video a...

Page 41: ...s distortions color level shifts video level shifts or noise that affects the entire picture The TCON can develop symptoms that seem to be video process related but the video process circuits will not provide symptoms that would be mistaken for a failed TCON circuit A21 TC05 LVDS CONNECTOR LVDS cable defect Although problems with the LVDS cable or connectors can cause symptoms that resemble TCON f...

Page 42: ...ection of the screen The TCON provides pixel data to groups of row and column drive ICs located on the upper and side edges of the panel It is improbable that several of these ICs would fail at the same time Therefore many columns or rows of pixels that are on or off point to a defective TCON A single row of On or Off pixels cannot be attributed to the TCON The TCON simply cannot cut out a single ...

Page 43: ...ect A failed TCON circuit can produce a symptom of no video or lines and patterns that usually occupy a sizeable portion of the screen A no video condition caused by the TCON is a bit harder to determine since there are no indications on the screen to analyze ...

Page 44: ...ect A failed TCON circuit can produce a symptom of no video or lines and patterns that usually occupy a sizeable portion of the screen A no video condition caused by the TCON is a bit harder to determine since there are no indications on the screen to analyze ...

Page 45: ... the problem is the TCON board Avoiding wrong board replacement One way to determine the location of the fault is to loosen the LVDS connector at the TCON board while the unit is turned on Unlock the connector and gently rock the cable in and out of the socket while observing the screen for any sign of noise The response may be gentle white flashes intermittent colored lines or a screen full of ran...

Page 46: ...ocessing are performed by the Main CPU Signal Processor IC IC8001 The digital audio signal from IC8001 is output to the optical audio output jack as PCM Dolby Digital Serial data is output to the audio amplifier IC IC2106 The output of IC2106 is connected to the speakers ...

Page 47: ...Slide 47 SOS Detect Shutdown ...

Page 48: ...e unit to the standby mode The A board microprocessor causes the power LED to blink a number of times The number of blinks points to the board where the abnormality is detected Protection circuits are incorporated in the unit to prevent the failure of a single circuit or component from creating catastrophic damage A shutdown condition occurs when a there is an over voltage a short or a drop in any...

Page 49: ...it resets the unit to the standby mode The A board microprocessor causes the power LED to blink a number of times The number of blinks points to the board where the abnormality is detected Protection circuits are incorporated in the unit to prevent the failure of a single circuit or component from creating catastrophic damage A shutdown condition occurs when a there is an over voltage a short or a...

Page 50: ...Slide 50 TC L32U22_1 Blink SOS Circuit ...

Page 51: ...7801 The sine wave output of the oscillator is provided to the switching transistors connected to T7801 to generate a magnetic field The AC output at the secondary of T7801 is provided to the LCD panel via the connectors P5 P6 P7 and P8 to power the backlights When the inverter is operating properly the inverter SOS input of the micro is pulled low If a malfunction occurs a detection circuit locat...

Page 52: ...o P board Start A board Does pin 4 of CN A03 remain high before the TV shuts down No Yes Yes Yes P board Is there AC output at pin 1 and 2 of CN P5 P6 P7 and P8 before the TV shuts down Yes No LCD Panel The inverter circuit is malfunctioning Power supply has no problem Without DTV12V the inverter circuit does not work 1 Blink SOS Troubleshooting ...

Page 53: ...Slide 53 3 and 7 Blinks SOS Circuit ...

Page 54: ... turns off The high at the collector of Q5612 causes IC5606 IC5608 IC5610 and D5670 to operate and provide the SUB5V 1 8V 1 2V and SUB3 3V output If a malfunction occurs and the SUB5V 1 8V and 1 2V are not present IC4700 detects the loss of voltage and provides an output to IC8001 to shut the unit down The power LED blinks 3 times The SUB3 3V is monitored directly by the CPU IC8001 If it is shorte...

Page 55: ... of IC4800 Is there 2 5V output at pin 2 or 3 of IC4800 Yes Yes No A board LCD Panel The 13 7V and 2 5V are converted from the DTV12V source on the A board They are then supplied to the LCD panel to power the drive circuit DTV 12V supply problem Is pin 4 of CN P2 shorted Yes Disconnect the connector A03 Is pin 4 of CN P2 shorted Yes P board A board No No ...

Page 56: ...ector A03 Is pin 4 of CN P2 shorted Yes P board A board Disconnect the connector A10 V10 Plug the unit into the AC outlet and turn it on using the main power switch No No The 17V and SUB3 3V sources are used to power the audio amplifier IC2106 If IC2106 becomes defective either the 17V or 3 3V line will be affected The 3 3V is directly monitored by IC8001 In the event of a short IC8001 shuts down ...

Page 57: ... into other voltages A zener diode at the base of transistor Q5613 protects against over current condition When the DTV12V source drops to a predetermined level the zener diode turns off causing Q5613 to turn off and Q5612 to turn on The input to IC8001 goes low resulting in the shutdown of the unit and 4 blinks of the power LED ...

Page 58: ...leshooting Is there 12V at pin 4 of CN P2 before the TV shuts down No Start Yes A board P board DTV 12V supply problem Is pin 4 of CN P2 shorted Yes Disconnect the connector A03 Is pin 4 of CN P2 shorted Yes P board A board No No ...

Page 59: ...08 If the 5V source is missing or shorted the transistor Q3208 turns off and its collector goes high to alert IC8001 The MPU within IC8001 turns off IC3201 and provides the Check iPod Connection warning on the screen To restore normal operation 1 Turn off the TV 2 Unplug it from the AC outlet 3 Disconnect the iPod 4 Restore power to the unit _ Normal operation should be restored ...

Page 60: ...IC2106 or one of the speakers develops a short circuit a high is output to IC8001 to trigger a shutdown and 9 blinks of the power LED When a 9 blinks shutdown occurs disconnect the speakers one at a time and turn the unit on If the problem remains replace the A board If it goes away the disconnected speaker is the problem ...

Page 61: ... the unit shuts down and the power LED blinks nine times check for an improper connection of connector A21 TC05 The shutdown occurs due to no communication between the TC Board and A Board A defective TCON board may also be the cause for the blink code ...

Page 62: ...OFT 0 16 00 GenX EEP 0 08 26 GenX ROMCOR 0 00 00 Press the 1 button ADJUST CONTRAST 0000 YMAX Main Item Sub Item Data Software Version Key command 1 button Main items Selection in forward direction 2 button Main items Selection in reverse direction 3 button Sub items Selection in forward direction 4 button Sub items Selection in reverse direction VOL button Value of sub items change in forward dir...

Page 63: ... GREEN 6 ALL_BLUE 7 RASTER1 8 RASTER2 9 RASTER3 10 RASTER4 11 4DIN1 12 4DIN2 13 GRAY WHITE 14 GRAY RED 15 GRAY GREEN 16 GRAY BLUE 17 FLICKER0 18 GS1 19 1 PIX STRIPE 20 2 PIX STRIPE 21 1 LINE_STRIPE 22 COLORBAR 23 WIDTH COLORBAR 24 OUTER 25 LIGHT CHECK 26 FLICKER1 27 FLICKER2 28 FLICKER3 This aging mode only exists in the D2 series It can be useful to determine the section of the unit that is respo...

Page 64: ...to select VCOM The adjustment value of VCOM is displayed 3 Flicker Confirmation Press the 5 button on the remote control to display the flicker adjustment screen Confirm if flicker can be seen No flicker Exit from the Service mode Flicker Adjustment has to be done 4 VCOM Adjustment Flicker Adjustment This procedure writes into the EEPROM the correct data so the panel does not flicker Press the rem...

Page 65: ... Number of LED blinks indication From the left side Last SOS before Last two occurrences before last 2nd occurrence after shipment 1st occurrence after shipment This indication except the 2nd and 1st occurrence after shipment will be cleared by reset To exit Disconnect the AC cord from the wall outlet How to Enter the Service Mode_SRV TOOL ...

Page 66: ...ously press the MENU button on the remote control for 3 seconds or more Self Check XXXXXX XXXXXX Copyright Panasonic Corporation 2010 How to Exit Disconnect the AC cord from wall outlet Display Ref No Description P C B DTVSOC IC8001 Nile TCON A Board TUN IC8302 TUNER A Board MEM1 IC8004 EEPROM MPU A Board MEM2 IC8503 EEPROM Nile A Board TEMP IC4701 TEMP SENSOR A Board AMP IC2106 AUDIO AMP A Board ...

Page 67: ...Slide 67 Troubleshooting Picture Problems All Series except D Troubleshooting Picture Problems All Series except D ...

Page 68: ...ble Upper or Lower Lower Right Left Left or Right All over the screen Panel A Board 1 Part of the screen 2 All over the screen 3 No picture Upper Panel Panel Panel Panel Non uniformity color Many vertical lines Abnormal color OSD trouble Vertical or Horizontal line Panel ...

Page 69: ...ion to panel drive location 1 3 or 2 3 area will be troubled NG Area Abnormality means No Picture Picture noise abnormal picture Full Horizontal line etc Actual Symptom Symptom Upper trouble LCD panel Panel Drive Panel Drive Panel Drive Panel Drive Panel Drive Tuner Input Terminal Signal Processor ...

Page 70: ...No Picture Picture noise Full Horizontal line etc Actual Symptom Symptom Right half picture trouble Defective parts Panel Panel drive or A board NG Area LCD panel Panel Drive Panel Drive Panel Drive Panel Drive Panel Drive Ａ Tuner Input Terminal Signal Processor ...

Page 71: ...ure Defect 4 Symptom Horizontal line Actual Symptom Symptom Horizontal line Defective parts Panel NG Area LCD panel Panel Drive Panel Drive Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 72: ...re Defect 5 Symptom Vertical line Actual Symptom Symptom Thin vertical line Defective parts Panel NG Area LCD panel Panel Drive Panel Drive Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 73: ...mptom Vertical line noise Actual Symptom Symptom Vertical noise Defective parts Panel or A board NG Area LCD panel Panel Drive Panel Drive Vertical noise Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 74: ...ct 7 Actual Symptom Symptom Sub picture NG Actual Symptom Symptom Sub picture NG Defective parts A board NG Area LCD panel Panel Drive Panel Drive Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 75: ... Defect 8 Symptom Non uniformity color Actual Symptom Symptom Irregular color NG Area LCD panel Panel Drive Panel Drive Defective parts Panel Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 76: ... lines all over screen Actual Symptom Symptom Vertical line all over screen Defective parts Mainly A board in some cases panel NG Area LCD panel Panel Drive Panel Drive Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 77: ...Symptom Symptom O S D trouble Actual Symptom Symptom OSD trouble Defective parts A board NG Area LCD panel Panel Drive Panel Drive O S D Mixture Color is normal Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 78: ...tual Symptom Actual Symptom Symptom Abnormal color Actual Symptom Symptom Abnormal color Defective parts A board NG Area LCD panel Panel Drive Panel Drive Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 79: ...ture and Normal Sound Reason A board or Panel Yes No Tuner area Digital Demodulator area HDMI Decoder area SD Processor area Analog TV Picture is NG Digital TV Picture is NG HDMI picture input is NG SD card picture is NG A board Panel Are the test Patterns OK See slide 88 Signal Processor area No Ａ Tuner Input Terminal Signal Processor Panel Drive Panel Drive Panel Drive ...

Page 80: ...Slide 80 Troubleshooting Picture problem D Series Troubleshooting Picture problem D Series ...

Page 81: ...ge the Panel The Gate driver is defective So exchange LCD panel LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Abnormal area LVDS Low Voltage Differential Signaling Picture Defect 1 D Series ...

Page 82: ...l half of the screen has trouble So half of the source driver is defective So exchange LCD panel LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Abnormal area LVDS Low Voltage Differential Signaling Picture Defect 2 D Series ...

Page 83: ...is LCD panel defect If IC8001 Nile TCON is defective there would be many vertical lines all over screen LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Abnormal line Abnormal bar LVDS Low Voltage Differential Signaling Picture Defect 3 D Series ...

Page 84: ... the LCD panel defect If IC8001 Nile TCON is defective there would be many horizontal lines all over screen LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Abnormal lines Abnormal line LVDS Low Voltage Differential Signaling Picture Defect 4 D Series ...

Page 85: ...el is transformed by stress For example mounting screw or physical damage So for such a symptom we have to exchange LCD panel LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Abnormal area Abnormal area LVDS Low Voltage Differential Signaling Picture Defect 5 D Series ...

Page 86: ... may be caused by the A board or TC board A one vertical line defect right photo would be the panel Panel Defect LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA many vertical lines many vertical lines LVDS Low Voltage Differential Signaling Picture Defect 6 D Series ...

Page 87: ...n Screen Display is generated at IC8001 Nile TCON in A board So exchange the A board LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Abnormal OSD LVDS Low Voltage Differential Signaling Picture Defect 7 D Series ...

Page 88: ... discolor is A board defect mainly IC8001 Nile TCON So exchange the A board LCD Panel Gate Driver is in Panel Source Driver Gate Driver A board TC board LVDS DATA LVDS DATA Control DATA Strange color Strange color part LVDS Low Voltage Differential Signaling Picture Defect 8 D Series ...

Page 89: ...lator area HDMI Decoder area Analog TV sound is NG Digital TV sound is NG HDMI sound is NG A board Audio Signal Processor area Ａ Tuner Input Terminal Signal Processor Speaker Opt Audio Head Phone No Audio Amp area No Is sound from the headphone jack normal Yes Is there a problem with one of the speakers Yes Speaker ...

Page 90: ...t pattern generator may be used to determine whether the symptom is the result of defective A board or the panel The test pattern is displayed as follows Start the Panel Free Run Feature Did the test patterns display correctly Panel A Board All video sources contain distortion No Yes ...

Page 91: ...g the A board copy the EEPROM data to the A board User settings data including hotel mode settings data such as channel scan adjustment data and factory preset data can be copied to and from an SD card B Hotel Copy the data when installing a number of units in hotel or any facility When installing a number of units in a hotel or any facility the data in the master TV can be copied to a SD card and...

Page 92: ...window point to New and then click text document A new file is created by default New Text Document txt 3 Right click the new text document that you ve just created and select Rename 4 Change the name and extension of the file to the following file name for copying to the SD card and press ENTER File name a For Board replacement boardreplace pwd b For Hotel hotel pwd Note Please make only one file...

Page 93: ...the completion of copying to the SD card remove the SD card from the TV 5 Turn off the TV Note The following new folder will be created in the SD card from the TV a For Board replacement user_setup b For Hotel hotel Panasonic Data Copy Board Replacement Input Password Panasonic Data Copy Board Replacement Input Password Panasonic Data Copy Board Replacement Copy TV to SD Card Please for a while Pl...

Page 94: ...be deleted after copying Limited one copy b For Hotel The data will not be deleted and can be used for other TVs 5 Turn off the TV Note 1 Depending on the failure of the A board the data copy function for board replacement may not work 2 This function can be effective among the same model numbers Panasonic Data Copy Board Replacement Input Password Panasonic Data Copy Board Replacement Copy SD to ...

Page 95: ...ntrast Ratio 2000000 1 Both high contrast and energy saving efficiency have been achieved in the IPS LED LCD TV by combining the IPS panel which is known for its wide viewing angle with a bright energy efficient LED backlight Even dark scenes like night skies are naturally rendered with delicate shades of black The Intelligent Scene Controller further boosts the image quality Energy Saving Mode Th...

Page 96: ...rd slot Watch and show your photos right after you take them Simply insert an SD card into VIERA to display photos on the large screen You can also choose the background music and display effects It s much more fun when you can view them on a large screen HDTV with family and friends in 1920 x 1080 pixel high definition and a wide 16 9 aspect ratio VIERA LinkTM VIERA Link allows the interlinked op...

Page 97: ...ing Angle The wide 178 viewing angle ensures clear images even when viewed from an angle The backlight s wide transmission aperture enhances the contrast between light and dark and improves motion image response Glossary ...

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