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Panasonic LCD-201603, Technical Manual

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Panasonic LCD-201603 Technical Manual Download Page 22

(Backlight)

P

REG

16V

STB5V

16V

Power

IC

HO

LO

PFC

IC

Power

IC

HO

LO

< P + PB >

A

22

Power Board Structure 3 ( P+PB board )

(TNPA6249)

(TNPA6060)

Power

IC

VLED2

LED

Drive

IC

Anode

Cathode

Power

IC

VLED1

PB

only 65DX7**/8**

LED

Drive

IC

BL-ON

PWM

Anode

Cathode

Summary of Contents for LCD-201603

Page 1: ...Panasonic Corporation 2016 Unauthorized copying and distribution is a violation of law c Model No LCD 201603 Order No ITD1603906GE Ver 1 0 1 Circuit Operation and Troubleshoot 2016 LCD TV ...

Page 2: ...Revision History Version Issued Revised date Revised content Ver 1 0 25th Mar 2016 First version 2 ...

Page 3: ...2 Video Signal Processing 3 Power Supply 3 1 Power Board Structure 3 2 Stand by Start up Operation 4 SOS Protection Circuit and Troubleshooting except 1 time blink 5 Difference of LED Drive Circuit Troubleshooting for 1 time blink ...

Page 4: ...1 Board Layout 4 ...

Page 5: ...ut 1 DX series 5 BT A K P T 49 50 58DX TX 55DX T DX900 WiFi PB A P WiFi K G K BT A K P PB G K T 65DX TH TC 55DX WiFi BT A K P T 40DX WiFi LDP BT depend on the model and region G K G K GK board depend on the model ...

Page 6: ... 49 43DS T 49 43D 6 G K A K P LDP WiFi T 65 55DS WiFi WiFi only DS series GK board depend on the model BT BT BT only TC DS6 TX DS630 series G K K A P A GK TH 32D450 440 400D A K P G K WiFi BT T 50 40 32DS T 40 32D except 32inch India model ...

Page 7: ...h A P India 1 Board A P 40inch A P A P A P LDP 43inch A P LD A P LD 49inch A P LD A P LD A P 50inch A P A P 55inch A P LDP A P A P PB only TH 55DX640 TC 55DX700 58inch A P A P PB 65inch A P LDP A P PB A P PB 7 Except K GK boards Main Board Structure ...

Page 8: ... Name Function A Board Main Board P Board Power supply Backlight Drive Power key Control key K Board Remote Receiver LED A02 A12 A10 P3 P A AC input K10 Speaker Speaker K A15 8 Board Layout 1 32D410 400 A P ...

Page 9: ...pairable One of the panel module A19 P4 9 Board Layout 2 49DS630 LD LD1 LD2 A P LD LDP GK Board Name Function A Board Main Board P Board Power supply for Signal Process LD Board Power supply for Backlight Drive Board Name Function GK Board Key K Board Remote Receiver Power LED P5 ...

Page 10: ...upply for Backlight Drive 10 Board Layout 3 Board Name Function GK Board Key K Board Remote Receiver Power LED PB A WiFi Module Speaker Speaker K T CON Not repairable One of the panel module 65DX900 A P PB P GK Bluetooth Module AC input P2 P3 P6 PB6 PB3 PB1 PB2 PB5 K10 A02 A15 A12 A10 A16 A08 A17 ...

Page 11: ...11 2 Video Signal Processing ...

Page 12: ... terminal OPT_out IC8000 MTK5561 Resize IP conv OSD HDMI1 2 TU670 TUNER IC68 De Modulation The input terminals are different by the models or countries LVDS Data to LCD Panel 12 Video Audio Signal Process 1 D5 D4 series USB1 ...

Page 13: ... OSD HDMI1 2 3 1 Bluetooth TU670 TUNER Headphone IC68 De Modulation CI slot only Europe The input terminals are different by the models or countries IC8601 USB HUB LVDS Data to LCD Panel 13 Video Audio Signal Process 2 DS5 DS6 series 1 Bluetooth only TC DS6 except Canada TX DS630 USB1 2 LAN IC8650 LAN ...

Page 14: ... terminals are different by the models or countries IC8601 USB HUB to LCD Panel 14 Video Audio Signal Process 3 IC9000 Mstar NTK Frame Rate Convert DX6 DX7 DX8 series V by One format LAN IC4500 HDMI SW USB1 1 Bluetooth only DX9 7 except TC DX700C 1 Bluetooth HDMI1 2 3 4 except below models CI slot only Europe HDMI1 2 3 4 TX DX8 TH DX640 TC DX700C ...

Page 15: ...one USB3 3 0 The input terminals are different by the models or countries 15 Video Audio Signal Process 4 IC9000 NTK Frame Rate Convert DX900 series IC4300 GCEX2 HDR Hexa chroma LAN CI slot only Europe IC4500 HDMI SW USB1 IC8705 USB HUB V by One format to LCD Panel IC68 De Modulation SD card only TC TX HDMI1 2 3 4 ...

Page 16: ...elevision 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 IC8000 where the video signal is extracted and converted to YUV data The output is provided to the Video Input I F for selection The JPEG data of the SD card enters the JPEG I F section of IC8000 for conversion into YUV data and o...

Page 17: ...between A board and T CON board How to enter While pressing volume button of the TV unit press option yellow button of the remote control 3 times within 2 seconds How to exit Switch off the TV unit The test pattern is created by the circuit in LCD Panel Module T CON board Troubleshoot for Video Signal Problem 17 Some patterns are automatically changed The patterns are depend on the LCD panel A IC8...

Page 18: ...lf Test Yes No 1 During this indication Self Check of Service Mode is working at the background 2 If NG indication is shown A board defective 3 If All OK it shifts to picture and sound test OK 1 Antenna level low 2 Connection mistake 3 Input devices NG 4 Input select mistake TV unit defective A board Panel or Speaker D400 410 series do not support Troubleshoot for Video Audio Signal Problem 18 A I...

Page 19: ...19 3 Power Supply 3 1 Power Board Structure ...

Page 20: ... Backlight P REG 16V STB5V 16V LED Drive IC BL ON Anode Cathode PWM PFC IC Power IC Power IC HO LO VLED P A 20 Power Board Structure 1 P Board only BL ON ...

Page 21: ...P LDP LD Backlight REG 16V STB5V 16V LED Drive IC BL ON Anode Cathode PWM PFC IC Power IC Power IC HO LO VLED P LDP LD A 21 Power Board Structure 2 P LDP LD board BL ON ...

Page 22: ...V STB5V 16V Power IC HO LO PFC IC Power IC HO LO P PB A 22 Power Board Structure 3 P PB board TNPA6249 TNPA6060 Power IC VLED2 LED Drive IC Anode Cathode Power IC VLED1 PB only 65DX7 8 LED Drive IC BL ON PWM Anode Cathode ...

Page 23: ... STB5V 16V Power IC HO LO PFC IC Power IC HO LO P PB A 23 Power Board Structure 4 P PB board PFC IC TNPA6200 TNPA6199 Backlight LED Drive IC BL ON Anode Cathode Sync control etc Power IC HO LO VLED1 VLED2 only DX9 ...

Page 24: ...24 3 2 Stand by Start up Operation The explanation is for the case of Power Board Structure 2 P LD LDP board 43 49DS630 but P P LD LDP P PB cases are basically same start up operation ...

Page 25: ...16 LD1 8 9 6 P4 8 9 6 3 3 LCD Module A T CON board LCD Panel STB3 3V F15V PNL12V A19 1 2 3 4 12V 3 3V 5V 1 5V 1 1V 3 3V PNL12V 2 4 10 The DC level is different by the LCD panel 25 A02 Voltage Distribution A P LD Boards Ex 43 49DS630 series Each models are different pin allocation but operation is same VLED1 2 1 5 3 7 16V STB5V 7 1 3 5 11 ...

Page 26: ...12V 3 3V 5V 1 5V 1 1V 3 3V PNL12V 11 11 TV_SUB_ON 12 12 POWER_ON POWER Switch BL_ON The DC level is different by the LCD panel 26 17 28 A02 TNPA6199 TNPA6200 P3 VLED Output PB3 PB2 VLED2 17 28 16V Output 1 1 Reference Voltage Distribution A P PB Boards Ex DX900 series P6 PB6 1 3 1 3 15 A03 BL_ON 9 10 9 10 16V 16V 16V 5 1 5 ...

Page 27: ...tch When the TV is plugged in the power board outputs 5V for standby voltage When the power supply receives the TV_SUB_ON signal it outputs 2 different voltages 16V to the A board on pins 1 2 and 3 of connector P2 24 32V to the LED backlight board on pins 8 9 of connector P4 After A board is ready to display it outputs Backlight_on command to LD board 12 4 POWER_ON KEY3 6 light 2 24V 32V 27 Start ...

Page 28: ...CC HO LO FB 24V 32V Q7402 05 7 P2 D7106 Rectifier T7202 D7215 C7213 VCC Q7403 D7408 09 C7423 Through OFF OFF from AC plug in to P board 1 PFC IC7201 7 1 3 11 TNPA5916 28 OFF PFC OFF AC100V 140V AC240V 330V Start up Operation 2 D7401 02 C7422 REF 13 LED Drive IC7800 LD2 Anode2 Cathode2 Tr Anode1 Cathode1 Tr 3 7 1 5 Ex 43 49DS630 series ...

Page 29: ...7301 starts supplyinng of switching pulses for Q7301 Q7302 Due to this current starts to lead through winding of T7301 which starts to generate output voltages One of these voltages VCC is used for power supplying of the IC 7301 to its pin 10 When the power supply starts up the 16V is providing by D7408 09 C7423 This voltage leads to IC7503 which is 5 volts DCDC converter This voltage STB5V is pro...

Page 30: ...er SW Standby It can receive Power SW Remote Viera Link and so on North America Power LED OFF Except North America Power LED OFF Power LED RED Power SW on 2 from to A board 1 POWER Switch 4 12 Automatically 30 Start up Operation 4 IC8000 PEAKS Signal Processing Each models are different pin allocation but operation is same Ex 43 49DS630 series ...

Page 31: ...erica Power LED OFF Power LED RED Power SW on 2 from to A board 1 POWER Switch 12 12 Automatically 31 Reference Start up Operation 4 3 3V IC8601 8605 To WiFi adaptor 1 5V for WiFi JK8705 8605 LAN 1 JK8600 Enable Enable IC8706 8607 IC8000 PEAKS Signal Processing The power line for LAN WiFi is supplied from Standby power It is for Power on by Apps Power on by Easy Mirroring etc function PHY3 3V 4K m...

Page 32: ... 1 The IC8000 lights on the RED LED and is ready to power on the TV by receiving the Power switch on Remote on Viera Link and so on This is a standby state 1 Only North America model Power switch on is no need automatically this procedure is operated after the TV is plugged in But the RED LED does not light When the power on command from the power switch the remote control and so on is provided to...

Page 33: ...ON Switch D7106 Rectifier PFC IC7201 Q7201 T7202 D7215 C7213 8 7 VCC 1 3 Q7403 BL ON L7813 33 Anode2 Cathode2 Vcc PFC ON AC100V 380V AC240V 380V SRV 16V SRV VLED SRV VLED2 SRV 5 3V The DC level is different by the LCD panel Q7801 Tr 5 CS mode change PWM 6 REF D7408 09 C7423 D7401 02 C7422 11 13 L7814 Anode1 SRV VLED1 Q7804 Cathode1 Tr 3 7 1 5 Start up Operation 6 from to P LD board 2 3 P4 8 9 LED ...

Page 34: ...e up Besides the ON command is connected to the Q7202 which provide power supply VCC of PFC circuit The PFC starts to operate then Output voltages from transformer T7301 start rising up until the moment when IC7401 started to operate This IC measures the 16V line output in the secondary side The output of this IC is provided by PC7301 to pin 4 of IC7301 IC7301 adjust the switching frequency by thi...

Page 35: ...utput Transformer T7301 DCDCEN SUB5V PFC T7202 IC7201 DC DC IC7301 F15V IC5000 ANALOG ASIC IC8000 PEAKS 16V DC DC IC7503 STB5V STB3 3V 35 The DC level is different by the LCD panel 3 7 LD2 IC5420 IC8001 IC5400 11 7 IC7800 DCDC LED Drive 24 32V Output VLED1 2 TNPA5916 LD1 P4 A board SUB voltage 3 Start up Operation 8 8 9 16V 6 24 32V Ex 43 49DS630 series SRV 16V ...

Page 36: ...the A board to generate the SUB Voltages used for signal processing operation SUB1 1V 1 5V 3 3V 5V and HDMI3 3V TU1 8V Each voltage regulators start up by high state of DCDCEN signal which is pull up to F15V So F15V is provided to A board each SUB voltage regulator ICs start output A board SUB voltage 3 36 Start up Operation 9 ...

Page 37: ...C_ON2 A19 1 2 3 4 BL_ON LCD Module PNL12V 10 F15V SUB5V T CON PFC T7202 IC7201 DC DC IC7301 Back Light F15V IC5000 ANALOG ASIC IC8000 PEAKS 16V DC DC IC7503 STB5V BL_SOS 8 IC5500 STB3 3V 37 The DC level is different by the LCD panel 3 7 LD2 PWM IC5420 IC8001 IC5400 11 7 14 IC7800 DCDC LED Drive and A board PNL voltage 4 5 Start up Operation 10 11 13 12 24 32V Output VLED1 2 16V TNPA5916 LD1 P4 3 2...

Page 38: ... Operation 11 After that IC8000 outputs the BL_ON command to the LD board through P board The BL_ON command turns on the IC7800 for LED backlight drive Then the backlight starts lighting by PWM signals and LCD panel displays the pictures If the backlight drive circuit does not work normally the BL_SOS signal is informed to the IC8000 At that time IC8000 stops outputting the TV_SUB_ON signal and bl...

Page 39: ...N Switch D7106 Rectifier PFC IC7201 Q7201 T7202 D7215 C7213 8 7 VCC 1 3 Q7403 BL ON L7813 39 Anode2 Cathode2 Vcc PFC ON AC100V 380V AC240V 380V SRV 16V SRV VLED SRV VLED2 SRV 5 3V The DC level is different by the LCD panel Start up Operation 12 Q7801 Tr 5 CS mode change PWM 6 REF D7408 09 C7423 D7401 02 C7422 11 13 L7814 Anode1 SRV VLED1 Q7804 Cathode1 Tr 3 7 1 5 LD board backlight drive 6 LED Dri...

Page 40: ...r LED off AC Plug in STB5V form P to A 16V from P to A PNL12V from A to Panel T CON SUB_ON from A to P Power LED Panel_Vcc_ON from A to Panel TCON VLED from P to Panel Backlight BL_ON from A to Panel Backlight Power on Standby Power on Standby North America Power LED Green RED Power LED Red OFF Power Off no exist 5V 16V 12V Ex 24V VLED PANEL_VCC_ON2 signal PNL12V output 16V 32 V up to VLED DS D se...

Page 41: ... in STB5V form P to A 16V from P to A PNL12V from A to Panel T CON SUB_ON from A to P Power LED Panel_Vcc_ON from A to Panel TCON VLED from P to Panel Backlight BL_ON from A to Panel Backlight Standby Power on Standby Power on Power on North America Power LED Green RED Power LED Red OFF Power Off no exist Also 16V is necessary before Power LED on at first time Standby Power on 5V 16V 12V Ex 24V VL...

Page 42: ... LED OFF AC Off Plug Out Plug In Plug Out Plug In Plug Out Plug In Remote Pow SW Reference State Transition Diagram Power On LED Red Stand by LED OFF AC Off Plug Out Plug In Plug Out Plug In Pow SW Remote Except the Americas The Americas Pow SW 42 ...

Page 43: ...43 4 SOS Protection Circuit and Troubleshooting Except 1 time blink ...

Page 44: ...P A Memory eMMC read problem quick 5 A No voltage SUB3 3V after wake up once 7 7 7 7 A Audio amplifier SOUND_SOS 9 9 9 9 A Speaker FRC_SOS IC9000 10 A FAN_SOS 11 Fan A Back End SOS inside of Peaks 12 12 A Emergency SOS 13 13 13 13 A GCEX_SOS IC4300 16 A When an abnormality occurs in the unit the SOS Detect circuit is triggered and the TV shuts down Shut down means that turn off the TV_SUB_ON signa...

Page 45: ...OS SUB5V T CON OFF OFF ON OFF 9 Blink 1 Blink 7 Blink detect OFF N OFF Back Light N SOS N SOS 45 The DC level is different by the LCD panel IC5500 IC5420 IC8001 IC5400 12V LD P P2 1 2 Q7403 3 Q7402 05 24 32V 16V Output Transformer T7301 1 5 PFC T7202 IC7201 DC DC IC7301 Back Light 16V 3 7 LD2 IC7800 DCDC LED Drive 24 32V Output VLED1 2 16V TNPA5916 LD1 P4 6 8 9 BL_SOS Protection Circuit BL_ON 9 11...

Page 46: ...ltage F15V at pin 1 3 5 of A02 connector before LED blinks No Yes 15V A board P board Remove P2 connector Check if short circuit at pin 1 3 5 of A02 connector No Yes Shorted A board P P2 1 2 3 16V Q7403 16V A IC8000 5V IC8716 5420 3 3V IC8705 5400 1 5V 1 1V F15V SUB1 5V SUB1 1V SUB3 3V DCDCEN 12V IC4900 AMP SUB5V IC5500 IC8100 IC8101 A02 1 3 5 46 Troubleshooting for LED Blinking Quick 3 time blink...

Page 47: ...may due to short circuit or overload the SOUND_SOS signal will go low level and be detected by IC8001 LED blinks 9 times Remove A12 connecter Power on Does LED blinks again Yes 9 time blinks L R speaker wire of speaker A board A A02 IC8000 1 3 5 IC4900 AMP F15V SOUND_SOS 9 Blink N SOS A12 16V From P BOARD 47 Troubleshooting for LED Blinking 9 time blink Ex 43 49DS630 series ...

Page 48: ...y IC8001 LED blinks 11 times 48 Troubleshooting for LED Blinking only DX900 11 time blink A A02 IC8000 1 3 5 IC5901 DC DC F15V 11 Blink A08 16V From P BOARD Fan_SOS Fan_Vcc No only one fan is stopped Before shutdown are all fans stopped Yes all stopped Stopped fan A board Fan x6 all fan output low signal Low Normal Low Normal only DX9 series ...

Page 49: ...y SOS A 16 only DX9 series GCEX_SOS IC4300 A IN THIS CASE A BOARD DEFECTS 49 Troubleshooting for LED Blinking 5 7 10 12 13 16 time blink 5 blinks is problem about memory access IC8000 or IC8903 7 blinks is problem about the power line of SUB3 3V 10 blinks is problem about initialization of FRC IC IC9000 12 and 13 blinks is problem about IC8000 and software item 16 blinks is problem about initializ...

Page 50: ...e A board Replace A board Replace LCD Panel T CON part Is the power LED situation changed after pushing the button for entering Test Mode If entering the test mode the Power LED will Blink except TC model or OFF TC model Patterns are displayed No Picture The DC level is different by the LCD panel 50 Troubleshooting for No Picture and No OSD Power LED is lit No blinking Refer to the block diagram T...

Page 51: ... No Power On Power LED is off No blinking NG Replace A board Check if the output of STB5V Disconnect A02 connecter Short check of STB5V line in A board No Shorted Shorted Replace P board Replace A board DS D series OK 51 ...

Page 52: ...rt check the SRV 16V In A board Shorted Replace P board Replace A board Disconnect A02 connecter Short check the SRV 16V In A board Shorted No shorted Replace A board No LDP board go to right Disconnect LDP3 connecter Short check the SRV 16V in P board Shorted Replace P board Replace LDP board No shorted No shorted No shorted A P PB T 65DX8 7 T DX900 TH 55DX640 TC 55DX700 A P A P LDP T 40 49 50DX ...

Page 53: ...53 5 SOS Protection Circuit and Troubleshooting 1 time blink ...

Page 54: ... 9 LED blinks Detail error Board may defect 1 BL_SOS LED driver Panel LD P Troubleshooting for LED Blinking 1 time blink If the IC7800 detects 1 abnormal current of backlight LEDs Backlight LED broken or Low No VLED voltage 2 abnormal DC DC power supply of IC7800 does not rise up the VLED voltage or the IC7800 does not work No Vcc or No BL_ON PWM signal or defect itself the IC7800 output BL_SOS si...

Page 55: ...nectors Power on Check if the voltage of SRV VLED1 VLED2 pin 3 7 of LD2 before LED 1 blink ALL OK NG OK 32V P board Panel Module LD board Troubleshooting for LED Blinking 1 time blink Shorted OK Short check between SRV VLED1 VLED2 and GND Panel Module Power on Check if the voltage of SRV VLED pin 9 of LD1 before LED 1 blink Ex 43 49DS630 series VLED The DC level is different by the LCD panel A P L...

Page 56: ... 1 15 Tr BL_SOS BL_SOS Sync control LED Drive IC IC9000 FRC BL ON SUB ON 1 5 11 SUB ON P2 1 5 11 1 P3 PB3 PB2 PB1 1 5 Photo coupler Photo coupler Photo coupler Troubleshooting for LED Blinking 1 time blink 17 28 9 10 17 28 9 10 Power IC Power IC Power IC 2 4 6 SRV VLED1 SRV VLED2 VLED1 SRV BL ON VLED The DC level is different by the LCD panel A P PB 1 ...

Page 57: ...ng 1 time blink Shorted OK Power off Disconnect PB1 and PB2 connector Short check between SRV VLED1 VLED2 and GND PB Module Check if the voltage of SRV BL ON pin 5 of PB1 before LED 1 blink Refer to the previous page block diagram Ex DX900 series NG A board Check if the voltage of BL_ON pin 15 of A03 before LED 1 blink OK 3 3V Panel Module VLED The DC level is different by the LCD panel A P PB 2 ...

Page 58: ...7512 D7507 08 C7502 3 A A02 IC8000 PEAKS 13 12 11 LCD Module T CON board LCD Panel 1 2 3 1 3 5 10 12 8 2 BL_SOS SUB ON Low Normal Back light 8 Troubleshooting for LED Blinking 1 time blink LED Drive IC7800 Q7803 BL ON PWM Ex 32D400 410 32DS500 600 series 70V 1 58 Low Normal VLED The DC level is different by the LCD panel A P 1 ...

Page 59: ...K 70V P board Connect P3 connector Power on Check if the voltage of SRV VLED pin 3 of P3 before LED 1 blink Both OK P board Panel Module Shorted OK Short check between SRV VLED and GND Panel Module Does the blinking start soon after power on Euro DS6 model only Go to troubleshoot of quick 3 time blink page check with that procedure No after several sec Yes Ex 32D400 410 32DS500 600 series ...

Page 60: ...40inch A P A P A P LDP 43inch A P LD A P LD 49inch A P LD A P LD A P 50inch A P A P 55inch A P LDP A P A P PB only TH 55DX640 TC 55DX700 58inch A P A P PB 65inch A P LDP A P PB A P PB 60 Except K GK boards 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 3 3 3 1 4 Backlight Drive Structure 1 ...

Page 61: ...LDP LED Drive LCD Panel Module P T CON 24 32V PNL12V 16V STB5V Backlight 2 A P LDP LD VLED 2 BL_ON BL_ON PB A IC8000 Peaks MTK Resize IP conv LCD Panel Dr Dr LCD Panel Module P T CON VLED1 2 PNL12V 16V STB5V Backlight 390V DX900 LED Drive PB LED Drive A IC8000 Peaks MTK Resize IP conv LCD Panel Dr Dr LCD Panel Module P T CON 24 32V PNL12V 16V STB5V Backlight VLED 390V DX6 7 BL_ON BL_ON 1 A P PB bo...

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