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Panasonic TH-50LFE7W, Servise Manual

The Panasonic TH-50LFE7W is a top-quality commercial display panel ideal for professional use. With its crystal-clear image quality and sleek design, this product is a perfect choice for businesses. Need its Servise Manual? You can easily download the free manual from manualshive.com and get the most out of your purchase.

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© Panasonic Corporation 2014
Unauthorized copying and distribution is a violation
of law.

ORDER NO.VED1406521CE

D06

FULL HD LCD Display

Model No.

TH-50LFE7U
TH-50LFE7W
TH-50LFE7E

LA55 Chassis

Summary of Contents for TH-50LFE7W

Page 1: ... Panasonic Corporation 2014 Unauthorized copying and distribution is a violation of law ORDER NO VED1406521CE D06 FULL HD LCD Display Model No TH 50LFE7U TH 50LFE7W TH 50LFE7E LA55 Chassis ...

Page 2: ...shooting Guide 14 6 1 Self Check 14 6 2 No Power 17 6 3 No Picture 17 7 Disassembly and Assembly Instructions 18 7 1 PCB Layout 18 7 2 Preparation 18 7 3 About disassembly and replacement 18 7 4 Backcover Comp removal 19 7 5 A Board replacement 19 7 6 P Board replacement 22 7 7 GK Board and Key Button Bracket replacement 22 7 8 Speaker Unit L R replacement 23 7 9 K Board LED Panel and LED Panel Ca...

Page 3: ...rriers insulation papers shields are properly installed 6 After servicing make the following leakage current checks to prevent the customer from being exposed to shock hazards 1 2 Touch Current Check for TH 50LFE7U 1 Plug the AC cord directly into the AC outlet Do not use an isolation transformer for this check 2 Connect a measuring network for touch currents between each exposed metallic part on ...

Page 4: ...sure the voltage at each point 5 Reserve the AC plug in the AC outlet and repeat each of the above measure 6 The potential at any point TOUCH CURRENT expressed as voltage U1 and U2 does not exceed the following values For a c U1 35 V peak and U2 0 35 V peak For d c U1 1 0 V Note The limit value of U2 0 35 V peak for a c and U1 1 0 V for d c correspond to the values 0 7 mA peak a c and 2 0 mA d c T...

Page 5: ...ildup or exposure of the assembly 3 Use only a grounded tip soldering iron to solder or unsolder ES devices 4 Use only an anti static solder removal device Some solder removal devices not classified as anti static ESD protected can generate electrical charge sufficient to damage ES devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ES devices ...

Page 6: ...CB Caution Pb free solder has a higher melting point than standard solder Typically the melting point is 50 70 F 30 40 C higher Please use a high temperature soldering iron and set it to 700 20 F 370 10 C Pb free solder will tend to splash when heated too high about 1100 F or 600 C If you must use Pb solder please completely remove all of the Pb free solder on the pins or solder area before applyi...

Page 7: ...ceable P Board should be exchanged for service A Board Digital core signal processor Non serviceable A Board should be exchanged for service GK Board Key Power SW Non serviceable GK Board should be exchanged for service K Board Power LED Remote receiver C A T S sensor Non serviceable K Board should be exchanged for service ...

Page 8: ...HDMI1 TYPE A Connector 2 HDMI2 DVI D IN DVI D 24 Pin Compliance with DVI Revision 1 0 Content Protection Compatible with HDCP 1 1 AUDIO Stereo mini jack M3 1 0 5 Vrms Shared with PC IN PC IN High Density Mini D sub 15 Pin G with sync 1 0 Vp p 75 ohm G without sync 0 7 Vp p 75 ohm B 0 7 Vp p 75 ohm R 0 7 Vp p 75 ohm HD VD 1 0 5 0 Vp p high impedance AUDIO Stereo mini jack M3 1 0 5 Vrms Shared with ...

Page 9: ...the OFF timer except for 0 minute by OFF TIMER button 30 minutes 60minutes 90 minutes 2 Set the volume level of sound to 0 by VOL down button button 3 Press the RECALL button more than 3 seconds before a volume display disappears To exit the CAT mode turn the power off by the main unit or a remote control 5 1 1 IIC mode Select the IIC mode by Up Down button on the remote control at the front page ...

Page 10: ...y the self check of a signal system only one history is displayed After a self check disappears But PTCT displays 5 times of histories Abnormality of the latest 3 times first time and second time after shipment and after a self check does not disappear You can see a detailed history of power failure sometimes About the display contents of PTCT PTCT The position of 05 is the first time after shipme...

Page 11: ...rol 5 1 4 MS mode Select the MS mode by Up Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds To exit the MS mode press the R button on the remote control Caution Market Select should be set after exchange of A Board Destination number Number Model Destination 0 50LFE7J Japan 1 50LFE7U North America 2 50LFE7E Eur...

Page 12: ...on the remote control at the front page of CAT mode and then press the Action button on the remote control To exit the NW mode press the R button on the remote control 5 1 6 ID mode Select the ID mode by Up Down button on the remote control at the front page of CAT mode and then press the Mute button on the remote control more than 3 seconds To exit the ID mode press the R button on the remote con...

Page 13: ...13 TH 50LFE7U TH 50LFE7W TH 50LFE7E 5 2 IIC mode structure following items value is sample data ...

Page 14: ...on the rear side of the unit and press the OFF TIMER button on the remote control If the IIC ports have been checked and found to be incorrect Or not located then will appear in place of OK 02 in the line of the PTCT means the number of blinks of the Power LED is 2 Reference to 6 1 2 H09 in the line of the PTCT is the error code To exit the CAT mode switch off the main power Note The line of the P...

Page 15: ...15 TH 50LFE7U TH 50LFE7W TH 50LFE7E 6 1 3 LCD Panel test mode ...

Page 16: ...16 TH 50LFE7U TH 50LFE7W TH 50LFE7E ...

Page 17: ...H 50LFE7W TH 50LFE7E 6 2 No Power First check point There are following 3 states of No Power indication by power LED 1 No lit 2 Green is lit then turns red blinking a few seconds later 3 Only red is lit 6 3 No Picture ...

Page 18: ...e When you attach each module please do not bolt a screw strongly The part without the statement of tightening torque please tighten a screw 60 10 N cm To disassemble P C B wait for 1 minute after power was off for discharge from electrolysis capacitors When tightening a screw retention structures are required not to deform the LCD Panel Please remove a clamper and a wire processing tape if needed...

Page 19: ...FE7E 7 4 Backcover Comp removal 1 Remove the screws and then remove the Backcover Comp 7 5 A Board replacement 1 Disconnect the connectors and remove the screws 2 Remove the screws and then remove the A Board from the Terminal Metal ...

Page 20: ...TH 50LFE7U TH 50LFE7W TH 50LFE7E Caution when replacing A Board Gaskets are included with the A Board for repair Please stick the gaskets on the position of the following fig ure when replacing the A Board ...

Page 21: ...er supply of the main unit by pressing the power button on the remote control Please note that a main power supply will be in an OFF state if a power button of main unit is pressed after connect ing the AC code to a wall outlet Please press a power button of main unit again and turn on the main unit Since the power supply state is saved in EEPROM of A Board when remove insert an AC plug it start i...

Page 22: ...ase stick the felt on the position of the following figure when replacing the P Board 7 7 GK Board and Key Button Bracket replacement 1 Disconnect the connector and remove the screw and then remove the GK Board and Key Button Bracket Cautions when removing attaching the GK Board When removing the GK Board from the Key Button Bracket please remove it carefully to five hooks The hooks are locked cer...

Page 23: ...move the Speaker Unit L R Cautions when replacing the Speaker Unit Sponges are included with the Speaker Unit for repair Please stick the Sponges on the position of the following fig ure when replacing the Speaker Unit 7 9 K Board LED Panel and LED Panel Case replacement 1 Remove the LED Panel Block 2 Disconnect the connector and remove the K Board LED Panel and LED Panel Case ...

Page 24: ...o the LCD Panel Assy for repair 1 Remove the Key button bracket Refer to 7 7 K Board LED Panel and LED Panel Case replacement 2 Remove the LED Panel Block Refer to 7 9 K Board LED Panel and LED Panel Case replacement 3 Disconnect the connectors and remove the screws and then remove the A Board Block 4 Remove the screws and remove the Speaker Unit Block L R 5 Disconnect the connectors and remove th...

Page 25: ...sert the LVDS Cable firmly to the back The shortage of plugs causes failure Precaution when attaching the VESA Metal and Bottom Metal Please insert the hook of VESA Metal and Bottom Metal to the LCD Panel certainly Caution about the sticking parts of LCD Panel Assy Please remove the Barrier P PCB from the old LCD Panel and stick it on the new LCD Panel Assy for repair with dou ble sided tape ...

Page 26: ...ding to the sticking position of the LCD Panel Assy for repair after connecting the LVDS Cable Attachment specifications are subject to change without notice and parts may remain Please stick on the same place as before Please refer to the Wiring Connection Diagram ...

Page 27: ...TH 50LFE7U TH 50LFE7W TH 50LFE7E 27 8 Block Diagram 8 1 Diagram Notes ...

Page 28: ...CPU P15V USB LCD PANEL PWM1 9V PWR15V LAN3 3V LDO POWER_SOS SW DDR2 PNL12V SW D3 3V LAN3 3V RTC DCDC 9V SW PNL12V STB5V_SW D1 2V 9V D3 3V HDMI2 DCDC 3 3V LDO DCDC MUTE POWER LED_G BL_ON PWR5V RS232C IN PWR5V STB5V SOUND_SOS UART SW P15V STB 5V D3 3V PC DVI AUDIO IN D3 3V DDR1 8V D3 3V RXD TXD HDMI SW LDO PC REG_SOS HDMI IN STB5V HDMI1 CONTROL C A T S SENSOR POWER LED A10 DCDC KEY P15V_24V_EN LED_G...

Page 29: ...ENSOR PWR5V SOS Q4019 IC4806 CHARGE OUT 5V C A T S LINE FILTER PFC RS232C IN 7 SERIAL IN RESET EDID_WP IC4501 24V PNL12V Q4030 6 RXD1 SHORT SOS IC7201 T7202 Q7201 BL_SOS PWR5V A LF7103 LF7104 LF7105 EEPROM BL_SOS POWER_ON KEY Power SW Q4602 4 IC3504 13 9 16V 24V G_LED_ON IC2709 AC CORD 3 GK4 3 5 HDMI1_5V SHORT SOS 12 2 Q4088 D7106 LCD PANEL HDMI1_HPD Q7301 Q7302 4 Q4138 3 IC4905 7 JK2701 EEPROM GK...

Page 30: ...D 3x3 Matrix OSD Blend A13 PC B PWM1 CS_FL Q2707 IC4762 12 SPEAKER_R REMOTE PC_DVI_L R VCC ROUT IC4506 9V SPI_SW2 CS MAIN_ON FLASH_WP_SUB IC4801 VGA_SDA 32 768KHz SPI_SW SI SI00 9 MODE 7 Q4112 SPI_LAN_SW RESET Q4106 Q4109 LAN OR RS232C 1 8V 5V_I2C1 H_SYNC DDR2 SPI_SW2 Q2043 KEY_POWER LINE MUTE CS_FL EEPROM I2C2 R_LED_ON 3 3V MEMORY CONTROLLER SPI_SW 2 LAN3 3V_ON OFF 5V_RXD1 1 3V_TXD3 Q2053 2 Q4761...

Page 31: ...31 TH 50LFE7U TH 50LFE7W TH 50LFE7E 9 Wiring Connection Diagram ...

Page 32: ...32 TH 50LFE7U TH 50LFE7W TH 50LFE7E 10 Exploded View and Replacement Parts List 10 1 Exploded View ...

Page 33: ...33 TH 50LFE7U TH 50LFE7W TH 50LFE7E 10 2 Packing and Accessories ...

Page 34: ... P2 TXJ P41KJJ LEAD 1 P4 LD1 TXJ P51KJJ LEAD 1 P5 GK4 TXJA101KJJ LEAD 1 A10 K10 TXJA131KJJ LEAD 1 A13 SP 15 TQB0AC0097 1 INSTRUCTION BOOK 1 U ENG SPA FRA 15 TQB0AC0102 1 INSTRUCTION BOOK 1 W ENGLISH 15 TQB0AC0103 1 INSTRUCTION BOOK 1 W ARABIC 15 TQB0AC0098 2 INSTRUCTION BOOK 1 E ENG FRA SPA 15 TQB0AC0099 2 INSTRUCTION BOOK 1 E GER ITA 15 TQB0AC0100 2 INSTRUCTION BOOK 1 E SWE NOR FIN 15 TQB0AC0101 ...

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