Panasonic TC-55AS650U Service Manual Download Page 27

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9 Measurements and Adjustments

9.1.

Voltage chart of P-board

9.2.

Voltage chart of A-board

Power Supply Name

Test point

Spec

24V

TP7407

23.4V ± 1.2V

16V

TP7411

15.7V ± 0.6V

5VS

TP7501

5.2V ± 0.2V

PFC

TP7201 or TP7202

390V ± 15V

*HOT

Power Supply Name

Test point

Spec

PNL12V

TP4000,TP4001

12V ± 1.2V

SUB3.3V

TP8705

3.39V ± 0.15V

SUB5V

TP8704

5.17V ± 0.25V

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

SD3.3V

TP8617

3.34V ± 0.17V

USB1

TP8615

5.0V ± 0.25V

USB2

TP8611

5.0V ± 0.25V

Summary of Contents for TC-55AS650U

Page 1: ... Panasonic Corporation 2014 Unauthorized copying and distribution is a violation of law ORDER NO MTNC140420CE 55 inch Class 1080p LED LCD TV Model No TC 55AS650U 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 P 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 Function A Board Main K Board Remote LED Luminunce Sensor P Board Power Supply LED Driver GK Board Control Panel ...

Page 7: ...UDIO R COMPONENT IN RCA PIN Y PB CB PR CR AUDIO L AUDIO R HDMI IN 1 2 3 TYPE A Connector supports HDAVI Control 5 function USB 1 2 Type A connector DC 5V Max 500mA Hi Speed USB USB 2 0 DIGITAL AUDIO OUT PCM Dolby Digital DTS Fiber Optic OTHERS SD Card slot ETHERNET 10BASE T 100BASE TX Dimensions W H D Including pedestal 49 0 inch 30 2 inch 11 5 inch 1 244 mm 767 mm 292 mm TV Set only 49 0 inch 28 ...

Page 8: ...d eMMc IC8903 5 1 2 Replacement of ICs When Main IC IC8000 is replaced eMMc Memory IC8903 should be also replaced with new one the same time When eMMc Memory IC8903 is replaced Main IC IC8000 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 bu...

Page 9: ...of sub 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 i...

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: ...h time power is switched on Selection RF HDMI1 HDMI2 HDMI3 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 O...

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: ...ton 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 Check Point H14TUN IC6750 JK6751 TUNER A Board H90STBY IC8000 IC Peaks LD6 A Bo...

Page 16: ...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 created by the circuit in LCD Panel In LCD Panel t...

Page 17: ...embly chart 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 3 Remove the pedestal 8 2 2 Back Cover 1 Remove the 19 screws A 2 Remove the 8 screws B 3 Remove the Back Cover ...

Page 18: ...Remove the P PCB Barrier 8 2 4 A Board 1 Remove the 6 screws 2 Disconnect the connectors A02 A10 A12 A15 A16 and WiFi 3 Remove the Side and Bottom AV Brackets 4 Remove the A Board 5 Remove the 7 screws 6 Remove the Heat Sink Bottom 8 2 5 K Board 1 Remove the LED panel assy 2 Disconnect the connector K10 ...

Page 19: ...ove the control unit 2 Disconnect the connector GK4 3 Remove the locking tab 4 Remove the GK Board and the Key Button Bracket 8 2 7 WiFi Dongle 1 Remove the 1 screw 2 Remove the WiFi Dongle 3 Remove the 1 screw 4 Remove the WiFi cable 5 Remove the 1 screw 6 Remove the WiFi Metal ...

Page 20: ...kets and the 4 LCD MTG Bottom 8 2 9 Bottom Metals 1 Remove the 4 screws 2 Remove the 2 Bottom Metals 8 2 10 Bluetooth Dongle 1 Remove the BT Dongle 2 Disconnect the connector 3 Remove the screw 4 Remove the Bluetooth Bracket 8 2 11 Vesa Metals 1 Remove the 4 screws 2 Remove the 4 Vesa Metals ...

Page 21: ...21 8 2 12 Cabinet LCD panel 1 Remove the 4 screws 2 Remove the 4 Vesa Metals 3 Remove the LCD panel ...

Page 22: ...22 8 2 13 Felt Sponge and so on ...

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Page 27: ...V PFC TP7201 or TP7202 390V 15V HOT Power Supply Name Test point Spec PNL12V TP4000 TP4001 12V 1 2V SUB3 3V TP8705 3 39V 0 15V SUB5V TP8704 5 17V 0 25V 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 SD3 3V TP8617 3 34V 0 17V USB1 TP8615 5 0V 0 25V USB2 TP8611 5 0V 0 25V ...

Page 28: ...IO OUTPUT MAIN TUNER I F KEY3 STB3 3V POWER LED USB2 0_IF HDMI RX LVDS TX C A T S SENSOR 5VS AUDIO SUB_ON BL_ON KEY3 STM_EEPROM ETHER PHY SPEAKER L SUB_ON PANEL LAN DATA STB5V NEUTRAL F15V IECOUT SUB5V WiFi Peaks LD6 ANALOG ASIC AMP L OVP DET AC CORD KEY Power SW SUB5V DCDC KEY1 BL_SOS STB5V AC DETECT SUB3 3V SENSE REMOTE RECEIVER GK CONTROL PANEL KEY USB I F LAN I F USB2 USB1 A20 A12 HDMI2 AUDIO ...

Page 29: ... KEY 1 SUB_ON D7102 LVDS DATA 3 3V KEY1 IC8705 LCD DRIVER LF7103 4 5 BL_ON STB5V 2 SUB3 3V Q7403 5V 9 3 SUB5V LVDS DATA 3 MAIN 2 IC7201 T7202 Q7201 4 KEY3 POWER ON 5VS 10 PANEL12V IC7401 PC7301 PHOTO COUPLER 11 PC7303 P2 SW2851 2855 1 16V P AC CORD JK7101 1 KEY Power SW IC8704 AC DETECT BL_SOS 12 IC5300 RECTIFIER IC7301 Q7301 Q7302 16V 2 IC7503 Q7402 4 GK LINE FILTER 2 4 32 11 40 A15 1 3 A16 10 12...

Page 30: ...3 3V C A T S SENSOR JK4702A K IC8901 L STB3 3V IC8606 1 5V KEY3 IIC2 Rx0 DTV12V IC4900 5V PANEL_PWM IIC2 DDC0 D3101 HDMI1 STB_RESET SW_OFF_DET USB2 3 3V ARC_OUT PWM PWM 5VS L R BL_ON HDMI3 3V IC8903 LVDS I F SUB ON OVP DET 1 SUB_AI_3 3V IC8100 1 1V DDR I F AUDIO AMP IC8715 SUB1 1V Y V IC8101 USB1VBUS PB USB2VBUS L TMDS DATA CLOCK COMPONENT VIDEO 1 5V SUB1 5V CEC STB_RST IC5000 A IIC0 CEC PUL 5V EM...

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 ...

Page 34: ...34 11 5 Wiring 4 ...

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