Panasonic TC-42AS650L Service Manual
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Panasonic TC-42AS650L Service Manual

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

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Summary of Contents for Panasonic TC-42AS650L

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

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE 1 Safety Precautions -----------------------------------------------3 1.1. General Guidelines ----------------------------------------3 1.2. Touch-Current Check--------------------------------------3 2 Warning --------------------------------------------------------------4 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices ----------4 2.2. About lead free solder (PbF) ----------------------------5 3 Service Navigation------------------------------------------------6 3.1.

  • Page 3: Safety Precautions

    1 Safety Precautions 1.1. General Guidelines 1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or damaged by the short circuit. 2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly installed.

  • Page 4: Warning

    2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensitive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES devices are integrated circuits and some field-effect transistors and semiconductor [chip] components.

  • Page 5: About Lead Free Solder (Pbf)

    2.2. About lead free solder (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.

  • Page 6: Service Navigation

    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: Specifications

    4 Specifications...

  • Page 8: Technical Descriptions

    5 Technical Descriptions 5.1. Specification of KEY for HDCP2.0, Widevine, Mac and DIMORA-ID 5.1.1. General information: 1. eMMC Memory (IC8903) for spare parts has the seed of KEY for each. 2. The final KEY data will be generated by Main IC (IC8000) when SELF CHECK was done and are stored in both Main IC (IC8000) and eMMC (IC8903).

  • Page 9: Service Mode

    6 Service Mode 6.1. How to enter into Service Mode 6.1.1. Purpose/ After exchange parts, check and adjust the contents of adjustment mode. While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds. 6.1.2.

  • Page 10: Srv-Tool

    6.2. SRV-TOOL 6.2.1. How to access 1. Select [SRV-TOOL] in Service Mode. 2. Press [OK] button on the remote control. 6.2.2. Display of SOS History SOS History (Number of LED blinking) indication. From left side; Last SOS, before Last, three occurrence before, 2nd occurrence after shipment, 1st occurrence after shipment. This indication except 2nd and 1st occurrence after shipment will be cleared by [Self-check indication and forced to factory shipment setting].

  • Page 11: Hotel Mode

    6.3. Hotel mode 1. Purpose Restrict a function for hotels. Item Function 2. Access command to the Hotel mode setup menu Mode Select hotel mode On/Off In order to display the Hotel mode setup menu: Input Select input signal modes. While pressing [VOLUME (-)] button of the main unit, Set the input, when each time power is switched on.

  • Page 12: Data Copy By Usb Memory

    6.4. Data Copy by USB Memory Note: SD card can not be used for Data Copy. 6.4.1. Purpose (a) Board replacement (Copy the data when exchanging A-board): When exchanging A-board, the data in original A-board can be copied to USB Memory and then copy to new A-board. (b) Hotel (Copy the data when installing a number of units in hotel or any facility): When installing a number of units in hotel or any facility, the data in master TV can be copied to USB Memory and then copy to other TVs.
  • Page 13 6.4.3. Data copy from TV set to USB Memory 1. Turn on the TV set. 2. Insert USB Memory with a startup file (pwd file) to USB terminal. On-screen Display will be appeared according to the startup file automatically. 3. Input a following 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.
  • Page 14 6.4.4. Data copy from USB Memory to TV set 1. Turn on the TV set. 2. Insert USB Memory with Data to USB terminal. On-screen Display will be appeared according to the Data folder automatically. 3. Input a following password for (a) or (b) by using remote control. (a) For Board replacement : 2771 (b) For Hotel : 4851 Data will be copied from USB Memory to TV set.

  • Page 15: Troubleshooting Guide

    7 Troubleshooting Guide Use the self-check function to test the unit. 1. Checking the IIC bus lines 2. Power LED Blinking timing 7.1. Check of the IIC bus lines 7.1.1. How to access 7.1.1.1. Self-check indication only: Produce TV reception screen, and while pressing [VOLUME ( - )] button on the main unit, press [OK] button on the remote control for more than 3 seconds.

  • Page 16: Power Led Blinking Timing Chart

    7.2. Power LED Blinking timing chart 1. Subject Information of LED Flashing timing chart. 2. Contents When an abnormality has occurred the unit, the protection circuit operates and reset to the stand by mode. At this time, the defective block can be identified by the number of blinks of the Power LED on the front panel of the unit. Blinking Times Contents Check point...

  • Page 17: Disassembly And Assembly Instructions

    8 Disassembly and Assembly Instructions 8.1. Disassembly Flow Chart for the Unit This is a disassembly chart. When assembling, perform this chart conversely. 8.2. Disassembly Procedure for the Unit 8.2.1. Pedestal 8.2.2. Back cover 1. Lay down the unit so that the rear cover faces upward. 1.
  • Page 18 8.2.3. P-Panel 8.2.5. Heat sink bottom 1. Disconnect the connectors P2 and P5. 1. Remove the 7 screws (THEC1509). 2. Remove the 7 screws (THEJ036J). 2. Remove the Heat sink bottom. 3. Remove the P-Panel. 8.2.6. Circuit Units 1. Remove the screw (THEJ036J). 2.
  • Page 19 8.2.8. WiFi Metal 8.2.10. K-Panel 1. Remove the screw (THEJ036J). 1. Remove the K panel preparation. 2. Remove the WiFi Metal. 2. Disconnect the connector K10. 3. Remove the Led panel. 4. Remove the K-Panel. 8.2.9. GK-Panel 1. Disconnect the connector GK4. 2.
  • Page 20 8.2.15. LCD MTG Bottom 3. Remove the screw (THEJ036J). 4. Remove the bluetooth bracket. 1. Remove the LCD MTG Bottom. 8.2.12. Bottom Metal 8.2.16. SP Bracket 1. Remove the 4 screws (THEJ036J). 1. Remove the 4 screws (THEJ036J). 2. Remove the Bottom Metal. 2.
  • Page 21 2. Remove the Cabinet.
  • Page 22 EMI processing 8.2.18.

  • Page 27: Measurements And Adjustments

    9 Measurements and Adjustments 9.1. Voltage chart of A-Board VOLTAGE TEST POINT SPECIFICATION PNL12V TP4000/TP4001 12V ± 1.2V SUB5V TP8704 5.17V ± 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 ±...

  • Page 28: Block Diagram

    10 Block Diagram 10.1. Main Block Diagram DIGITAL SIGNAL PROCESSOR STB3.3V STB3.3V SUB3.3V SUB1.5V Only AS650L SUB3.3V SUB5V DMD_1.2/1.1V DCDC DMD_1.2/1.1V DDR3 ANTENNA E-MMC EEPROM CABLE EU_TU_1.8V SUB3.3V P_FEAINP ANTENNA/ TUNER I/F only AS650H P_FEAINN CABLE IN Y/CV Y/CV, Pb, Pr VIDEO INPUT VIDEO/ L/R_IN...

  • Page 29: Block (1/2) Diagram

    10.2. Block (1/2) Diagram MAIN POWER SUPPLY IC7503 STB5.3V T7301 5.3VS A02A IC7201 IC7301, D7403 5.3VS 5.3VS T7202, Q7301,2 D7102 Q7201,2 F15V RECTIFIER Q7412 JS7404 +16V +16V +16V +16V CF7101 Q7413 +16V +16V DETECT D7104,5 Q7402 D7412,3 BL_ECO BL_ECO SUB_ON SUB_ON PC7301 Q7404...

  • Page 30: Block (2/2) Diagram

    10.3. Block (2/2) Diagram JK8600 SD CARD SPEAKER_R SPEAKER_L D3101 JK3001B RF IN JK8601 JK8603A JK8605 JK8602 JK4702 JK4703 JK4701 FACTORY DIGITAL MAIN COMPONENT/VIDEO ANTENNA CABLE USB2 USB1 WiFi ETHERNET AUDIO OUT HDMI2 HDMI1 HDMI3 CN0100 IIC0 TU6704 IIC2 DMC_IIC0 IC8602 IC8606 IC8603...

  • Page 31: Wiring Connection Diagram

    11 Wiring Connection 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: Wiring (2)

    11.3. Wiring (2)

  • Page 33: Wiring (3)

    11.4. Wiring (3)

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