Panasonic TH-50LFE7W Servise Manual Download

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

8.3.

Block (1 of 2) Diagram

(LED:13TIMES)

HOT

COLD

(LED:2TIMES)

(LED:4TIMES)

SPI_SCK

POWER_SOS

SPI_LAN_SW

SPI_SO_LAN

PWM1

DVI_DET

RXD_LAN

LINE_OFF

5VD_POWER

LAN3.3V_ON/OFF

SPIO_SCLK

KEY

TXD_LAN

POWER_ON

REG_SOS

PWM1

USB_OVLD

SPI_SO

IR_IN

SPI_CS

BL_SOS

RXD_PC

USB5V_ON/OFF

NT_RST

BLON_EN

SPI_SI

P5V_EN

SPIO_SS

BL_SOS

KEY_LOCK

LIGHT_DET

KEY_POWER

LAN3.3V_ON/OFF

TXD_PC

SPIO_MISO

BL_ON

SPI_LAN_WP

SPI_CS_LAN

HPD

HDMI2_DET

KEY0

12VPAN_EN

SPIO_MOSI

LED_R

LED_G

HDMI1_DET

TMSD_IIC

P15V_24V_EN

SPI_SI_LAN

PANEL12V_SOS

KEY_MUTE

MAIN_EN

SPI_SCLK_LAN

PWR5V

STB5V_SW

D3.3V

PWM5V

STB5V

D4168

LAN3.3V

CF7104

D4161

D4164

SW2857

D7401,2

D7408,9

D4174

D4165

D5V

LAN3.3V

PWR5V

D4401

D5V

DDR1.8V

D4402

D5V

PWR5V

D2802

STB5V_SW

F7101

LAN3.3V

STB5V_SW

PWR15V

D4400

D4187

EEPROM

CONTROL

REMOTE

ERROR
DET

Q5303

Q4301

Q4087

JK3503

Q5102

SPI
FLUSH
MEMORY

JK4002

LINE_OFF

VCC

DVI_5V

RM2800

Q4024

+1.8V

EEPROM

BACK LIGHT

K10

+24V

SDA/
SCL

LAN TERMINAL

IC7301

IC2705

TXD

+16V

OVP DET

RESET

IC4703

IC5302

MII DATA

JK5302

5V->3.3V

IC4706

PWM1

JK5303

JK7101

+5V

Q4093

STB5V_SW

IR IN

DIGITAL SIGNAL PROCESSOR

PC7301

10/100
EtherMAC
w/FIFO

POWER SUPPLY

UART

REMOTE
RECEIVER

IR OUT

DDC IIC

IC2708

RXD

+1.8V

NETWORK
CONTROLLER

IC5602

+16V

Q2714,15

JK8601

KEY

USB HIGH
SIDE SW

CONTROL IIC

C.A.T.S.
SENSOR

PWR5V SOS

Q4019

IC4806

CHARGE OUT
(5V)

C.A.T.S

LINE
FILTER

PFC

RS232C IN

(SERIAL IN)

RESET

EDID_WP
(IC4501)

+24V

PNL12V

Q4030

RXD1

SHORT SOS

IC7201

T7202
Q7201

BL_SOS

PWR5V

LF7103
LF7104
LF7105

EEPROM

BL_SOS

POWER_ON

KEY,Power SW

Q4602

IC3504

+16V

+24V

G_LED_ON

IC2709

AC CORD

GK4

HDMI1_5V

SHORT SOS

Q4088

D7106

LCD PANEL

HDMI1_HPD

Q7301,
Q7302

Q4138

IC4905

JK2701

EEPROM

PWM1

X2701

CONTROL PANEL KEY

Q4128

DVI_HPD

A10

BL_ON

IIC_IF

IC5102

REMOTE RECEIVER

LAN CONTROL

+3.3V

MII_TXD
MII_RXD

BL_ON

POWER SW

PC7303

T7301

LAN
DATA

PHOTO
COUPLER

SN2800

CLK

IC5201

R_LED_ON

Q2716

IC2703

3.3V

HWCTRL

PHOTO
COUPLER

PANEL

25MHZ

HDMI IN

TXD0

Q7402
Q7405

+12V

TMDS DATA CLOCK

SW2851-2855

H3V_I2C1

Q2705

POWER LED

DDC IIC

IC4901

HDMI/DVI_D SW

LINE_OFF

Q2704

MII_TXD/
MII_RXD

IC2706

JK4004

RX2

I2C3

MII_MDC

TMDS DATA

Q4091

IC4904

IC5351

Q4100

HDMI IN1

RX1

Q5201

HDMI1_IIC

PHOTO
COUPLER

Q4129

D3.3V

DVI_IIC

Q7401

PNL12V

Q4099

RECTIFIER

Q4094

CLOCK

VCC

Q4380

RX3

25MHZ

HDMI2_HPD

SUB_ON

SHORT SOS

HDMI DATA CLOCK

+3.3V

(SHORT SOS)

+3.3V

JK5301

+3.3V

HDMI2_5V

Q2717,18

PC7302

AC
DETECT

IC2701

DDC IIC

Q2719

Q2706

HDMI IN2

Q5101

TRANSCEIVER

TXD1

RXD_232C

HDMI2_IIC

IC2704

RS232C

TXD_232C

REMOTE

+3.3V

TMDS_IIC

DVI-D IN

PANEL

IC5352

SUB_ON

+5V

Q4701,02

LLC
CONVERTER

C.A.T.S. SENSOR

5V_I2C1

IC5301

POWER LED

Q4300

IC7401

LVDS DATA

PNL12V

LVDS DATA

+24V

+16V

(LED:13TIMES)

HOT

COLD

(LED:2TIMES)

(LED:4TIMES)

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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Panasonic TH-50LFE7W, Servise Manual

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