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Order No. ITD1803902GE LCD-201803 Model No. 2018 - LCD TV Ver. 1.0 Circuit Operation and Troubleshoot Panasonic Corporation 2018 Unauthorized copying and distribution is a violation of law.
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Revision History Version Issued/Revised Revised content date Ver. 1.0 29th. Mar. 2018 First version...
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INDEX INDEX 1.Board Layout 2.Video Signal Processing 2-1. Picture signal flow 2-2. Troubleshoot of Picture Problem 3.Power Supply 3-1. Power Board Structure 3-2. Stand by / Start up Operation 3-3. SOS Protection Circuit and Troubleshoot of Power Problem 4.Rear Cover Disassemble and Assemble...
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Board Layout -1 49/43/32/24FS***/F4**, 40FS***/F4** (Europe and Oceania) 50FS*** 65FX6**, 75FX7** 55/49/43/40FX6**/FX7** The presence of GK board is depend on the model and region. 40FS***/F4** (Latin and Asia)
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Board Layout -2 ( A+P ) ( 32F400 ) AC input Speaker Speaker (T-CON) Not repairable, One of the panel module Board Name Function A-Board Main Board P-Board Power supply, Backlight Drive, Power key, Control key K-Board Remote Receiver, Power LED...
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Board Layout -3 ( A+P ) ( 55FX700 ) JK8705 Bluetooth Module AC input Speaker Speaker WiFi Module (T-CON) Not repairable, One of the panel module Board Name Function Board Name Function A-Board Main Board K-Board Remote Receiver, Power LED P-Board Power supply, Backlight Drive GK-Board...
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Board Layout -4 ( A+LDP ) ( 40F400 ) DC input, Connect the AC adapter LDP1 Speaker Speaker (T-CON) Not repairable, One of the panel module Board Name Function A-Board Main Board P-Board Power supply, Backlight Drive, Power key, Control key K-Board Remote Receiver, LED...
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Board Layout -5 ( A+P+LDP ) ( 75FX750 ) LDP3 LDP2 LDP5 LDP4 JK8705 AC input Speaker Not repairable, Speaker One of the panel module (T-CON) WiFi Module Not repairable, Bluetooth One of the panel module Module Board Name Function Board Name Function A-Board...
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Video/Audio Signal Process - 1 F4## series OPT_out IC4900 Audio AMP USB1 IC8000 IC68** Antenna (MT5561) terminal De-Modulation Resize IP conv. LVDS Data Component to LCD Panel HDMI1/2 The input terminals are different by the models or countries.
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Video/Audio Signal Process - 2 FS### series (*)Headphone OPT_out WiFi (*)Bluetooth IC3400 or 4900 Audio AMP USB1/2 IC8000 TU690* Antenna (Peaks LD11 IC68** terminal TUNER MT5581P) De-Modulation Resize IP conv. LVDS Data Component to LCD Panel CI-slot (only Europe) HDMI1/2/3 (*) The input terminals are different by the models or countries.
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Video/Audio Signal Process - 3 FX6## / FX700-740 series (*)Headphone OPT_out WiFi (*)Bluetooth IC3400 (Only FX700) Audio AMP USB1 USB2 IC8701 USB3 (USB HUB) IC8000 to LCD Panel (Only FX700) (Only FX700) (MT5811Q) IC68** TU670* Resize Antenna De-Modulation TUNER terminal IP conv.
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Video/Audio Signal Process - 4 FX750-780 series (*)Headphone OPT_out WiFi Bluetooth IC8705 IC3400 Audio AMP (USB HUB) USB2 USB1 USB3(3.0) IC9000 to LCD Panel IC8000 (MFC19) (MT5811P) Frame Rate IC68** TU670* Resize Color space Antenna De-Modulation TUNER IP conv. terminal Convert ( V by One format ) Component...
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Troubleshoot for Picture Problem :When abnormal picture is displayed, troubleshoot by the test pattern in LCD module. If the picture is no problem, A board must be defective. If the picture is also abnormal, LCD panel module must be defective. Just in case, confirm the flat cable connection between A board and T-CON board.
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Troubleshoot for Picture/Sound Problem Customers also can check the picture and sound by internal data. If the picture and sound is no problem, the reason of trouble is mostly not a TV. How to display : Menu HELP TV Self Test #)The test pattern and test sound are created by the main IC on the A board.
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System Information Software version = 3003 – 10000 - 00200a060019 You can check some information in Help menu. (Main – STBY – FRC MENU Help System information ver. 3.003 , 1.000, 0.200a06, 0.0019 * FRC version is only for high grade models Status1 : model ID Status2 : 0028-123-0012c8 0035-034-651g LSI (Package-Release-data ver), AQ (Package-Release-data ver)
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3. Power Supply 3-1. Power Board Structure...
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Power Board Structure -1 ( P Board only ) < P > This block diagram is 2ch drive for backlight. The number of channel is different by the models (LCD panels). ( Models are refer to P.10 ) The VLED voltage is also different by the LCD panels. VLED Anode Power...
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Power Board Structure -2 ( LDP Board only ) < LDP > ( only TH/TC-40F4##/40FS### , except Europe/Oceania ) VLED Anode AC Adaptor 19.5V 4 ch DC19.5V (Backlight) Cathode DCDC Drive BL-ON DCDC TV_SUB-ON DCDC STB5V...
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Power Board Structure -3 ( P+LDP Boards ) ( only 50FS500** ) < P + LDP > VLED Anode 4 ch Cathode DCDC Drive (Backlight) Power BL-ON DCDC STB5V...
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Power Board Structure -4 ( P+LDP Boards ) ( only 65FX6**/75FX7** ) < P + LDP > This LDP block diagram is 2ch drive for backlight of 65inch model. VLED1 1 ch Anode 4ch drive is for 75 inch models. The number of channel and VLED voltage are different by the LCD panels.
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3-2. Stand by / Start up Operation The explanation is for the case of “Power Board Structure -1 (P board only, )”, ex.55FX600 but “LDP, P+LDP, P+PB” cases are basically same start up operation.
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Simple Power On Sequence (F Series) < F4 series > (*) The DC level is different by the LCD panel. ( Plug in ) AC Plug in STB5V output STB5V (form P to A) Power On Standby Power Off Standby / Power on Power LED Red Power LED off Power LED...
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Simple Power On Sequence (FX/FS Series) < FX/FS series > Also 16V is necessary before Power LED. (*) The DC level is different by the LCD panel. AC Plug in ( Plug in ) STB5V (form P to A) STB5V output Power on TV_SUB_ON signal SUB_ON (from A to P)
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3-3. SOS Protection Circuit and Troubleshoot of Power Problem...
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LED Blinking Summary When an abnormality occurs in the unit, the “SOS Detect” circuit is triggered and the TV shuts down. Shut down means that the unit turns off the TV_SUB_ON signal. The power LED on the front panel will flash a pattern indicating the circuit area that has detected an abnormality.
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Troubleshooting for LED Blinking ( Quick 1 / 3 time blink ) LED blinks Detail error Board may defect Quick 1 / 3 Power on problem (No F15V/SUB3.3V/SUB1.5V voltage) (only for Asia/Latin FS5**) F15V(16V) is supplied from P board. If the F15V /SUB voltage is not supplied LED blinks quickly 1 or 3 times.
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Troubleshooting for LED Blinking ( 9 time blink ) LED blinks Detail error Board may defect Audio amplifier: SOUND_SOS A/Speaker Audio amplifier is sourced power F15V from P board. If the amplifier work abnormally (may due to short-circuit or overload), the SOUND_SOS signal will go low level and be detected by IC8001 LED blinks 9 times.
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Troubleshooting for LED Blinking ( 2/4/7/10/13/16 time blink ) LED blinks Detail error Board may defect Quick 2 / 4 Memory (eMMC: IC8900) read problem A ( eMMC / Nand Flash ) (only Asia/Latin FS5**) No voltage SUB3.3V detected FRC_SOS (Initialization of IC9000) A (IC9000) (only FX750-780 series)
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Troubleshooting for No Picture and No OSD (Power LED is lit = No blinking) < F4/FS/FX series > Refer to the block diagram of “Troubleshooting for LED Blinking (1 time blink )” page Patterns are displayed Try the “LCD Panel Replace A board Test Mode”...
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Troubleshooting for No Power On (Power LED is off = No blinking) -1 < F4 series > Disconnect A10 connecter. Power on check few times. Replace K board (because we can’t check Power on the power LED) Check if the output of Replace A board STB5V.
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Troubleshooting for No Power On (Power LED is off = No blinking) -2 Both of STB5V and 16V are necessary before lighting power LED. < FX/FS series > ( refer to page 43 of “Simple Power On Sequence (FX/FS Series)” ) Disconnect A10 connecter.
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Rear Cover Disassemble / Assemble -1 From design concept, the rear cover structure for some model is changed. The screws are decreased and there are hooks on the rear cover. Target model : 65/55/49FX700-73# , 740 for Oceania ( 75/43 inch is same as previous model) ...
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Rear Cover Disassemble / Assemble -2 How to remove the bottom screws Lay down on the table Bottom Screw Type Example1 Use ratchet type driver/wrench under Example2 50mm Shift to the edge of the table M3x8 (Head Hexagon) Example3 Shift Table Insert objects that become step between unit and the table *) The product pictures and...
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Rear Cover Disassemble / Assemble -3 From design concept, the rear cover structure for some model is changed. The screws are decreased and there are hooks on the rear cover. Target model : 49/43FX6## ( other inch is same as previous model) ...