Panasonic TC-42AS650L Service Manual Download Page 28

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10 Block Diagram

10.1. Main Block Diagram

POWER SUPPLY

DIGITAL SIGNAL PROCESSOR

KEY BOARD

PANEL

LCD

AC CORD

JK7101

HOT

COLD

FILTER

RECTIFIER

PFC

LLC Pri

LLC Sec

MAIN

CONVERTER

16V

F15V

LAN PHY I/F

VIDEO INPUT

AUDIO
OUT

USB I/F

HDMI
INPUT

STB5.3V

DCDC
5.3VS

5.3VS

24V

BL_SOS

BL_ON

BL_SOS

POWER_ON

PWM1-6

LED1-6

PWM1-6

RM_IN

AI_SENSOR

R_LED_ON

LVDS I/F

BL_ON

BL_ECO

BL_ON

BL_ECO

BL_ON

TPOUT

SD CARD I/F

TS PARALLEL

INPUT

NAND FLASH I/F

DDR CH I/F

BL_ECO

SUB_ON

BL_PWM 1-6

BL_ECO

SUB_ON

KEY

GK4

KEY

POWER_ON

LCD DRIVER

LED
BACK LIGTH

A12

A02

LED

DRIVER

POWER SW

CONTROL PANEL KEY

REMOTE RECEIVER
C.A.T.S. SENSOR

POWER LED

BT Bluetooth

Doungle

HDMI 1

Digital
Audio
Out

ETHERNET

HDMI 3

USB 1

HDMI 2

F15V

DCDC

PNL12V

DCDC

SUB5V

DCDCIN

PA2002

DCDCIN

DCDC

SUB5V

EEPROM

E-MMC

DDR3

PEAKS LD6

A16

A10

K10

SUB_AI_3.3V

SUB3.3V

F15V

STB5V

STB3.3V

SUB_AI_3.3V

SUB3.3V

STB5.3V

STB5V

ASIC

PNL12V

F15V

SUB5V

OVP

STB3.3V

CABLE

ANTENNA

ANTENNA/
CABLE IN

Only AS650L

only AS650H

VIDEO/
AUDIO
INPUT

Y/CV

Audio

Amp

SUB1.1V

DCDC

SUB1.1V

SUB1.5V

DCDC

DP3/DM3

DM0/DP0

DP3/DM3

DP4/DM4

RM_IN

AI_SENSOR

R_LED_ON

SUB1.5V

SUB5V

SUB3.3V

HDMI3.3V

DCDC

USB 2

EU_TU_1.8V

DMD_1.2/1.1V

DCDC

P_FEAINP

TUNER I/F

P_FEAINN

SUB3.3V

SUB5V

ARC

RX2

USB1

USB0

L_SPEAKER

R_SPEAKER

RX1

DIGITAL AUDIO

RX0

RX+/RX-/TX+/TX-

L/R_IN

Y/CV, Pb, Pr

SUB5V

STB3.3V

SUB3.3V

SUB1.5V

16V

AUDIO INPUT

DP/DN

Wifi
Doungle

SUB3.3V

EU_TU_1.8V

DCDC

EU_TU_1.8V

WIFI VBUSO

DCDC

VBUSO

JK8605

WiFi

HUB

SUB3.3V

Summary of Contents for TC-42AS650L

Page 1: ... Panasonic Corporation 2014 Unauthorized copying and distribution is a violation of law ORDER NO MTNC140752CE 42 inch Class 1080p LED HD TV Model No TC 42AS650L LA51 Chassis ...

Page 2: ... Mode 9 6 2 SRV TOOL 10 6 3 Hotel mode 11 6 4 Data Copy by USB Memory 12 7 Troubleshooting Guide 15 7 1 Check of the IIC bus lines 15 7 2 Power LED Blinking timing chart 16 7 3 LCD Panel test mode 16 8 Disassembly and Assembly Instructions 17 8 1 Disassembly Flow Chart for the Unit 17 8 2 Disassembly Procedure for the Unit 17 9 Measurements and Adjustments 27 9 1 Voltage chart of A Board 27 9 2 Vo...

Page 3: ...units Replace the entire wiring unit instead 6 When conducting repairs and servicing do not twist the Fasten connectors but plug them straight in or unplug them straight out 1 2 Touch Current Check 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 the set and a goo...

Page 4: ... 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 6 Do not remove a...

Page 5: ...ee 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 applying Pb solder If ...

Page 6: ...6 3 Service Navigation 3 1 PCB Layout Board Name Main Device A Board TUN DVB T2 De Mod ISDB De Mod LD6 LNB P Board Power Supply LED Driver GK Board Control Panel K Board Remote LED Luminance Sensor ...

Page 7: ...7 4 Specifications ...

Page 8: ... and eMMC IC8903 5 1 2 Replacement of ICs When Main IC is replaced eMMC Memory IC8903 should be also replaced with new one the same time When eMMC Memory is replaced Main IC is not necessary to be replaced the same time After the replacement of IC SELF CHECK should be done to generate the final KEY data How to SELF CHECK While pressing VOLUME button on the main unit press MENU button on the remote...

Page 9: ...b items change in forward direction in reverse direction 6 1 3 How to exit Switch off the power with the POWER button on the main unit or the POWER button on the remote control 6 1 4 Contents of adjustment mode Value is shown as a hexadecimal number Preset value differs depending on models After entering the adjustment mode take note of the value in each item before starting adjustment Main item S...

Page 10: ...rrence after shipment will be cleared by Self check indication and forced to factory shipment setting 6 2 3 POWER ON TIME COUNT Note To display TIME COUNT menu highlight position then press MUTE for 3 sec Time Cumulative power on time indicated hour minute by decimal Count Number of ON times by decimal Note This indication will not be cleared by either of the self checks or any other command 6 2 4...

Page 11: ...ach time power is switched on Selection RF HDMI1 HDMI2 AV Off give priority to a last memory Channel Select channel when input signal is RF Set the channel each time power is switched on Selection Any channel number or means the channel when turns off Volume Adjust the volume when each time power is switched on Range 0 to 100 Vol Max Adjust maximum volume Range 0 to 100 OSD Ctrl Restrict the OSD S...

Page 12: ...then copy to other TVs 6 4 2 Preparation Make pwd file as startup file for a or b in a empty USB Memory 1 Insert a empty USB Memory to your PC 2 Right click a blank area in a USB Memory window 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 just created and select rename and then change the name and exten...

Page 13: ...llowing password for a or b by using remote control a For Board replacement 2770 b For Hotel 4850 Data will be copied from TV set to USB Memory It takes around 2 to 6 minutes maximum for copying 4 After the completion of copying to USB Memory remove USB Memory from TV set 5 Turn off the TV set Note Following new folder will be created in USB Memory for data from TV set a For Board replacement user...

Page 14: ...ent 2771 b For Hotel 4851 Data will be copied from USB Memory to TV set 4 After the completion of copying to USB Memory remove USB Memory from TV set a For Board replacement Data will be deleted after copying Limited one copy b For Hotel Data will not be deleted and can be used for other TVs 5 Turn off the TV set Note 1 Depending on the failure of boards function of Data copy for board replacement...

Page 15: ...ption screen and while pressing VOLUME button on the main unit press MENU button on the remote control for more than 3 seconds 7 1 2 Exit Disconnect the AC cord from wall outlet or press the POWER button on the main unit for 3 seconds to turn off and then turn on automatically 7 1 3 Screen display 7 1 4 Check Point Confirm the following parts if NG was displayed DISPLAY Check Ref No Description Ch...

Page 16: ...he power with the POWER button on the main unit or the POWER button on the remote control How to confirm If the abnormal picture is displayed go into LCD Panel test mode to display the several test patterns And then judge by the following method Still abnormal picture is displayed The cause must be in LCD Panel Normal picture is displayed The cause must be in A board Remarks The test pattern is cr...

Page 17: ...t When assembling perform this chart conversely 8 2 Disassembly Procedure for the Unit 8 2 1 Pedestal 1 Lay down the unit so that the rear cover faces upward 2 Remove the 4 screws M4x12 3 Remove the pedestal 8 2 2 Back cover 1 Remove the 8 screws THEC1509 2 Remove the 16 screws THTD037J 3 Remove the Back cover ...

Page 18: ... WiFi 2 Disconnect the flexible cable A15 and A16 3 Remove the 4 screws THEJ036J 4 Remove the Side AV bracket 5 Remove the Bottom AV bracket 6 Remove the A Panel 8 2 5 Heat sink bottom 1 Remove the 7 screws THEC1509 2 Remove the Heat sink bottom 8 2 6 Circuit Units 1 Remove the screw THEJ036J 2 Remove the Circuit units 8 2 7 WiFi USB Cable 1 Remove the screw THEJ036J 2 Remove the WiFi USB cable ...

Page 19: ... Panel 1 Disconnect the connector GK4 2 Remove the Control panel 3 Remove the GK Panel 8 2 10 K Panel 1 Remove the K panel preparation 2 Disconnect the connector K10 3 Remove the Led panel 4 Remove the K Panel 8 2 11 Bluetooth Dongle 1 Remove connector 2 Remove the Bluetooth dongle ...

Page 20: ... Metal 8 2 13 Vesa Metal 1 Remove the 4 screws THEJ036J 2 Remove the Vesa Metal 8 2 14 LOUDSPEAKER SYSTEMS 1 Disconnect the connectors 2 Remove the 2 speakers 8 2 15 LCD MTG Bottom 1 Remove the LCD MTG Bottom 8 2 16 SP Bracket 1 Remove the 4 screws THEJ036J 2 Remove the 2 SP Brackets 8 2 17 Cabinet 1 Remove the 13 screws THE5ZC009J ...

Page 21: ...21 2 Remove the Cabinet ...

Page 22: ...22 8 2 18 EMI processing ...

Page 23: ...23 ...

Page 24: ...24 ...

Page 25: ...25 ...

Page 26: ...26 ...

Page 27: ...0 25V SUB3 3V TP8705 3 39V 0 15V HDMI3 3V TP8710 3 3V 0 17V SUB_AI_3 3V TP2206 3 3V 0 17V EU_TU_1 8V TP5704 1 84V 0 1V SUB1 5V TP8101 1 52V 0 08V SUB1 1V TP8100 1 21V 0 06V USB WiFi TP8620 5 15V 0 20V USB1 TP8615 5 0V 0 25V USB2 TP8611 5 0V 0 25V VOLTAGE TEST POINT SPECIFICATION 24V TP7407 23 4V 1 2V 16V TP7411 15 7V 0 6V 5VS TP7501 5 2V 0 2V PFC TP7201 TP7202 390V 15V HOT ...

Page 28: ...th Doungle HDMI 1 Digital Audio Out ETHERNET HDMI 3 USB 1 HDMI 2 F15V DCDC PNL12V DCDC SUB5V SUB5V DCDCIN PA2002 DCDCIN DCDC SUB5V EEPROM SD E MMC DDR3 PEAKS LD6 A16 A10 K10 BT SUB_AI_3 3V SUB_AI_3 3V SUB3 3V F15V STB5V STB3 3V STB3 3V STB3 3V SUB_AI_3 3V SUB3 3V STB5 3V STB5V P ASIC PNL12V F15V SUB5V OVP OVP STB3 3V STB3 3V CABLE ANTENNA ANTENNA CABLE IN Only AS650L only AS650H VIDEO AUDIO INPUT ...

Page 29: ... PC7303 SUB_ON BL_ECO BL_ECO BL_ECO SUB_ON 8 P2 D7102 1 12 14 13 15 17 18 PNL12V PFC LF7105 4 3 IC5300 CF7101 IC8704 12V 5 3VS 5 3VS PANEL12V SUB3 3V 4 AC CORD 2 3 PANEL KEY 11 16V 16V 24V 24V SW2851 2855 LLC AC DETECT LCD DRIVER POWER SW LINE FILTER 7 P MAIN PANEL LCD OVP 2 T7301 16V 16V 16V 16V LVDS DATA 2 8 PHOTO COUPLER PHOTO COUPLER PHOTO COUPLER D7104 5 KEY POWER_ON LED1 LED6 BL_PWM1 BL_PWM2...

Page 30: ...GITAL AUDIO OUT JK4703 IC8606 SW_OFF_DET 1 AI SENSOR 1 5V L F15V 3 3V DMD_ IIC2 P_XIRQ5 LVDS I F A10 K10 STB3 3V 1 1V 1 8V 5V OVP DET SUB1 1V IIC0 IIC0 IIC2 SUB ON AGC2_T PB A12 POWER_LED_ON IIC3 10 10 1 1 7 7 3 3 5 5 4 4 9 R Rx0 IC8201 SUB ON 5V STB3 3V USB I F DMD_ IIC2 LATCH 2 EMMC I F STM_EEP_SDA SCL STM_EEP_WP BL_PWM 1 8 P_ARCOUT STM IIC L R IIC3 PR USB1 STB3 3V USB2 DCDC CTL IC8603 CEC DCDCE...

Page 31: ...Diagram 11 1 Caution statement Caution Please confirm that all flexible cables are assembled correctly Also make sure that they are locked in the connectors Verify by giving the flexible cables a very slight pull 11 2 Wiring 1 ...

Page 32: ...32 11 3 Wiring 2 ...

Page 33: ...33 11 4 Wiring 3 ...

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