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Strange Color Problem

Summary of Contents for TC-L42D30

Page 1: ...onic National Training Panasonic Service and Technology Company 2011 LCD TV Technical Guide 2011 LCD HD FHD TV TC L42D30 TC L37DT30 TC L32DT30 TC L42E30 TC L42E3 TC L37E3 TC L32E3 TC L19C30 Applies to...

Page 2: ...ice 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 se...

Page 3: ...iver 17 Protection Circuit TC L42E3 53 TC L42D30 Board Layout 18 Protection Circuit TC L37E3 L32E3 and TC L32X30 54 TC L42D30 Connectors 19 Protection Circuit TC L42E30 55 TC L42D30 P Board 20 Nile T...

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

Page 5: ...5 New Panel for 2011 IPS LED LCD...

Page 6: ...6 Highlights...

Page 7: ...7 The New World of Smart VIERA...

Page 8: ...8 Concept of the IPTV World...

Page 9: ...9 Evolution of the IPTV World and Its Future Expansion...

Page 10: ...10 2D 3D Conversion...

Page 11: ...FHD 3D TC L37DT30 TC L32DT30 D Series FHD TC L42D30 E30 Series FHD TC L42E30 E3 Series FHD TC L42E3 TC L37E3 TC L32E3 U30 Series FHD TC L42U30 U3 Series FHD TC L37U3 TC L32U3 X30 Series HD TC L32X30 C...

Page 12: ...AN Adaptor Included 3D Image Viewer 2 DLNA VIERA Link 4 HDMI Terminals 3 USB Terminals Game Mode PC Input Terminal Link TC L37DT30 TC L32DT30 ECO Others Energy Star Eco Function Flush Design Swivel 3D...

Page 13: ...l Yes IPS Alpha Panel Motion Picture Pro Technology 240Hz Motion Picture Pro5 120Hz Motion Picture Pro4 120Hz Motion Picture Pro4 120Hz Motion Picture Pro4 24p Smooth Film 3D 2D 24p Smooth Film 24p Sm...

Page 14: ...Yes DLNA Yes Yes Yes yes Yes Yes Wi Fi Ready Yes Yes Yes yes Yes Wireless LAN Adaptor Included Yes Wireless LAN Adaptor Capable Wireless LAN Adaptor Capable Wireless LAN Adaptor Capable Wireless LAN A...

Page 15: ...Board non serviceable exchanged for service KA Board Remote Receiver LED Cat s eye P Board Power supply non serviceable exchanged for service S Board Power switch V Board 3D IR Transmitter TC L37DT30...

Page 16: ...16 TC L37DT30 Connectors...

Page 17: ...able provides 10 blink of the power LED after power On CN 901 To P4 Pin Voltage 1 24V 2 24V 3 24V 4 24V 5 24V 6 GND 7 GND 8 GND 9 GND 10 GND 11 BL_SOS 12 BL_ON 13 GND 14 PWM CN 709 To A16 Pin Voltage...

Page 18: ...serviceable Exchanged for service KA Board Remote Receiver LED CAT s eye P Board Power Supply Non serviceable Exchanged for service LD Board LED Driver Non serviceable Exchanged for service S Board Po...

Page 19: ...nnectors P A P2 A15 A10 Key scan To Speakers STB5V F15V SUB ON Backlight ON BL_SOS PWM Key To LED Backlight KA KA10 Power LED Remote receiver LD P4 P1 A02 S S10 To Panel Drive A12 24V PWM BL_ON BL_SOS...

Page 20: ...needed CN P2 CN P4 CN P2 P Board Pin Voltage 1 NC 2 GND 3 PWM 4 BL_ON 5 BL_SOS 6 MAIN_ON 7 KEY 8 RLY 9 SUB_ON 10 GND 11 16V 12 16V 13 16V 14 GND 15 5V CN P4 P Board Pin Voltage 1 PWM 2 GND 3 BL_ON 4...

Page 21: ...oltage 1 5V 2 GND 3 16V 4 16V 5 16V 6 GND 7 SUB_ON 8 RLY 9 KEY1 10 MAIN_ON 11 BL_SOS 12 BL_ON 13 PWM 14 GND 15 NC CN A10 A Board Pin Voltage 1 RED_LED_ON 2 NC 3 STB3 3V 4 AI SENSOR 5 REMOTE 6 7 SUB3 3...

Page 22: ...age 1 24V 2 24V 3 24V 4 24V 5 24V 6 GND 7 GND 8 GND 9 GND 10 GND 11 BL_SOS 12 BL_ON 13 GND 14 PWM T CON LED DRIVER CN LD2 CN LD4 A disconnected connector LD2 provides 1 blink of the power LED after 9...

Page 23: ...e STB5 8V is regulated to STB5V and applied to the application specific integrated circuit ASIC IC5000 for conversion to STB3 3V The STB3 3V energizes IC8001 to prepare the internal microprocessor for...

Page 24: ...24 TC L37DT30 Standby Power 2...

Page 25: ...ransistor that provides a ground connection to the photo coupler When the photo coupler turns on the switched mode supply goes in operation to create the 16V or and DC24V supplies On the A Board the 1...

Page 26: ...ch 4 5 13 12 RL101 RL102 9V SUB9V ANALOG VIDEO SW 5V IC5900 IC3001 IR for 3D IC5901 LEDDRV_5V 2 5 A30 5V IC5420 SD 1 8V 3 3V 3 3V IC5400 SUB_AI_3 3V 3 3V IC8706 HDMI3 3V 1 5V IC5440 USB SW USB 1 2V 1...

Page 27: ...IC IC5000 besides being applied to the CPU is also applied to the remote control receiver and the power LED on the K board through connector A1 K1 pin 3 When the CPU receives 3 3V and 1 2V it outputs...

Page 28: ...28 TC L37DT30 Power On Operation...

Page 29: ...to the power supply to turn on a transistor that provides a ground connection to the photo coupler When the photo coupler turns on the switched mode supply goes in operation to create the 16V or and...

Page 30: ...30 TC L37DT30 Voltage Distribution...

Page 31: ...of the A Board KA Board and S board Some of these voltages are monitored by IC5000 and IC8000 for their presence If one of the monitored voltages is missing a shutdown is triggered and a blink code g...

Page 32: ...32 TC L42E3 LED Backlight Control...

Page 33: ...PWM is delivered to the LED drive circuit via pin 1 of connector P4 to control the brightness of the LEDs The PWM signal is dependent on user settings and picture content An artificial intelligence ci...

Page 34: ...34 TC L37E3 LED Backlight Power Circuit...

Page 35: ...on user settings and picture content An artificial intelligence circuit located inside IC8000 is used to manipulate the PWM signal for picture quality and reduced power consumption IC9500 is a boost...

Page 36: ...36 TC L42D30 LED Backlight Power Circuit Waveform to one of the LED backlight connections...

Page 37: ...r settings and picture content An artificial intelligence circuit located inside IC8000 is used to manipulate the PWM signal for picture quality and reduced power consumption IC9500 and 9600 are boost...

Page 38: ...generates 16V or P15V and DC24V P15V is provided to the A board to generate the sub voltages used by the signal process circuit The sub voltages are confirmed by ASIC IC5000 Backlight ON After confirm...

Page 39: ...39 TC L37DT30 Video Input and Process...

Page 40: ...e or S Video signal is now the same as a digital 480i component signal If the incoming video is in the 480p 720P 1080i or 1080p format the Y Pb and Pr signals undergo A D analog to digital conversion...

Page 41: ...TC L37DT30 Eyewear Control Signal Output waveform to IR Transmitter V Board 3D Mode Only Connector A30 Pin 1 2 30Vdc Pin 3 2 30Vdc Pin 5 2 30Vdc Pin 7 2 30Vdc Voltages are always present 2D or 3D mod...

Page 42: ...yewear sync signal developed inside the LCD panel is output to the A board via pin 42 of the LVDS connector A15 On the A Board it enters IC5901 where it is used as a reference to create the signal nee...

Page 43: ...sing are performed by the Main CPU Signal Processor IC IC8000 The digital audio signal from IC8000 is output to the optical audio output jack as PCM Dolby Digital Serial data is output to the audio am...

Page 44: ...44 SOS Detect Shutdown...

Page 45: ...e 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...

Page 46: ...46 TC L37DT30 Shutdown Circuit Block Diagram...

Page 47: ...RD 7 SUB 3 3V_SOS A BOARD 9 SOUND SOS A Board SPEAKER 10 ZWEI2 SOS LCD PANEL 13 EMERGENCY_SOS A BOARD When an abnormality is detected the protection circuit resets the unit to the standby mode The A b...

Page 48: ...3V LED_SOS No shutdown AC24 IC5901 LED Drive 1 20 19 13 blinks Emergency communication between standby and main CPU 14 blinks IROM_SOS Peaks ROM SOS signal A Board TNPH0958 Panel T CON_SCL SDA Communi...

Page 49: ...r ON yes Is there approx 3V at pin 10 of connector A15 after power ON yes Is there 24V at pin 10 14 of connector P4 after power On yes Panel Is there 16V at pin 4 5 and 6 of connector P2 after power O...

Page 50: ...SUB3 3V at pin 7 of connector A10 before shutdown yes yes Replace the A board Disconnect connector A10 and using a jumper wire momentarily connect pin 8 to pin 10 of the socket Does the unit power up...

Page 51: ...51 Nine Blinks of the Power LED TC L37DT30 Start Replace the A board Disconnect each speaker one at a time and power the unit on Does the unit power up and stay on No Replace the bad speaker Yes...

Page 52: ...Communication problem between IC 8000 Peaks LDA3 and IC5000 STB micom Replace the A board 14 Blinks IC8000 Peaks LDA3 and IC8902 Peaks EEPROM read error Replace the A board Is there 12V present on the...

Page 53: ...3 3V RESET AA25 P15V 7 blinks AB25 Y22 4 blinks STB3 3V A09 5 LCD Panel SUB3 3V 1 blinks 20 19 SOS signal A Board TNPH0926 Peaks sLD2 13 blinks Emergency communication between standby and main CPU 14...

Page 54: ...l SUB3 3V 1 blinks 20 19 SOS signal A Board TNPH0906 A Board TNPH0907 Peaks sLD2 13 blinks Emergency communication between standby and main CPU 14 blinks IROM_SOS Peaks ROM 12 blinks N A Not Applicabl...

Page 55: ...nks STB3 3V A09 5 LCD Panel SUB3 3V 1 blinks 20 19 SOS signal A Board TNPH0906 Peaks sLD2 A15 46 Panel T CON_SCL SDA Communication error inside of LCD module 2 2 13 blinks Emergency communication betw...

Page 56: ...VDD2 5V 9 T CON_SOS Communication error with T CON IC Double speed type 10 SUB3 3V_SENSE Abnormal SUB3 3V 11 T CON DCDC_SOS T CON DCDC error 12 SOUND_SOS Audio AMP error Nile T CON SOS Detection blink...

Page 57: ...NPH0904 SUB3 3V 10 blinks Inverter SOS Backlight SOS A21 TC board 24KEC_I2CCLK1 DATA1 Communication error U30 model only 9 blinks A03 5 P IC9006 ZWEI2 Signal process IC9006 ZWEI2 Signal process M5 Ana...

Page 58: ...signal 1 Nile T CON IC2106 Audio AMP 12 blinks A Board TNPH0904 SUB3 3V 10 blinks Inverter SOS Backlight SOS A22 LCD module A03 5 P M5 Analog output 2 3 4 11 blinks 17 M22 STB3 3V SUB3 3V U6 AVDD12 6...

Page 59: ...59 DVDD2 5V AVDD12 6V STB5V AVDD12 6 Q5614 Q5602 F16V VON13V D5674 D5673 D5672 To pin 29 of IC4700 4 blinks SOS signal 2 A Board TNPH0904 Protection Circuit TC L37U3...

Page 60: ...60 IC4700 INPUT OUTPUT Pin31 Pin27 Pin28 Pin29 Pin30 Pin4 L L L L L 0 1V H L L L L 3 3V X H L L L 2 55V X X H L L 1 95V X X X H L 1 35V X X X X H 0 75V IC4700 Block Diagram...

Page 61: ...control SERVICE ADJUST WB ADJ OPTION SRV TOOL Picture Adjustment White Balance Adjustment Option Setting Service Tool ADJUST CONTRAST 0000 YMAX Main Item Sub Item Data Key command 1 button Main items...

Page 62: ...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 afte...

Page 63: ...SW OK Self Check XXXXXX XXXXXX Copyright Panasonic Corporation 2011 Panasonic ROM CHECK How to access 1 Self check display only While in TV reception mode press the VOLUME button on the main unit and...

Page 64: ...64 Troubleshooting Picture Problem Troubleshooting Picture Problem...

Page 65: ...65 Horizontal Area Picture Problem...

Page 66: ...66 Vertical Area Picture Problem...

Page 67: ...67 Vertical Line Bar Problem...

Page 68: ...68 Horizontal Line Picture Problem...

Page 69: ...69 Non uniform Color Picture Problem...

Page 70: ...70 Many Vertical Lines Picture Problem...

Page 71: ...71 OSD Problem...

Page 72: ...72 Strange Color Problem...

Page 73: ...attern generator may be used to determine whether the symptom is the result of a defective A board or panel The test pattern is displayed as follows Start the Panel Free Run Feature Did the test patte...

Page 74: ...e 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...

Page 75: ...ow 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...

Page 76: ...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...

Page 77: ...eleted 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...

Page 78: ...t 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 eff...

Page 79: ...ot 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...

Page 80: ...ia Player 12 is required Media content that can be played back using DLNA SD card or USB memory Certain JPEG SD Video AVCHD MP4 files MKV files MPEG 2 files MP3 files AAC files and LPCM files can be s...

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