Panasonic TC-L42U22 Service Manual
  1. Manuals
  2. Brands
  3. Panasonic Manuals
  4. LCD TV
  5. TCL42U22 - 42" LCD TV
  6. Service manual
Panasonic TC-L42U22 Service Manual

Panasonic TC-L42U22 Service Manual

42 inch class 1080p lcd hdtv, la03 chassis
Hide thumbs Also See for TC-L42U22:
Table of Contents

Advertisement

Quick Links

See also: Operating Instructions
42 inch Class 1080p LCD HDTV
TC-L42U22
Model No.
LA03 Chassis
© Panasonic Corporation 2010.
Unauthorized copying and distribution is a violation
of law.
ORDER NO.MTNC100328CE
B01 Canada: B61

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the TC-L42U22 and is the answer not in the manual?

Questions and answers

Related Manuals for Panasonic TC-L42U22

Summary of Contents for Panasonic TC-L42U22

  • Page 1 ORDER NO.MTNC100328CE B01 Canada: B61 42 inch Class 1080p LCD HDTV TC-L42U22 Model No. LA03 Chassis © Panasonic Corporation 2010. Unauthorized copying and distribution is a violation of law.

  • Page 2: Table Of Contents

    TABLE OF CONTENTS PAGE PAGE 1 Safety Precautions -----------------------------------------------3 11.12. A-Board (11/12) Schematic Diagram --------------- 48 1.1. General Guidelines ----------------------------------------3 11.13. A-Board (12/12) and V-Board Schematic 2 Warning --------------------------------------------------------------4 Diagram ---------------------------------------------------- 49 2.1. Prevention of Electrostatic Discharge (ESD) 12 Printed Circuit Board------------------------------------------ 50 to Electrostatically Sensitive (ES) Devices ----------4 12.1.

  • 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: To Electrostatically Sensitive (Es) Devices

    2 Warning 2.1. Prevention of Electrostatic Discharge (ESD) to Electrostatically Sensi- tive (ES) Devices Some semiconductor (solid state) devices can be damaged easily by static electricity. Such components commonly are called Elec- trostatically 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. Service Hint Board Name Function A-Board Speaker out, AV Terminal, HDMI in, SD Card, PC in, Digital Signal Processor, Nile-Tcon, Tuner V-Board Remote Receiver, LED P-Board Power (AC/DC), DC-DC Non serviceable P-Board should be exchanged for service. Control Panel Assy Control Button, Power switch Non serviceable...

  • Page 7: Specifications

    4 Specifications Power Source AC 110-127 V, 60 Hz Power Consumption Maximum 199 W Standby Condition 0.3 W Display panel Aspect Ratio 16:9 Visible screen size 42 inch class (42.0 inches measured diagonally) (W × H × Diagonal) 36.6 inch × 20.6 inch × 42.0 inch (930 mm × 523 mm × 1,067 mm) 2,073,600 (1,920 (W) ×...

  • Page 8: Service Mode

    5 Service Mode 5.1. How to enter into Service Mode While pressing [VOLUME ( - )] button of the main unit, press [INFO] button of the remote control three times within 2 seconds. 5.1.1. Key command [1] button...Main items Selection in forward direction [2] button...Main items Selection in reverse direction [3] button...Sub items Selection in forward direction [4] button...Sub items Selection in reverse direction...

  • Page 9: Contents Of Adjustment Mode

    Contents of adjustment mode 5.1.2. • 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 Sub item Sample Data Remark ADJUST...

  • Page 10: Srv-Tool

    5.2. SRV-TOOL 5.2.1. How to access 1. Select [SRV-TOOL] in Service Mode. 2. Press [OK] button on the remote control. 5.2.2. 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 ship- ment setting].

  • Page 11: Hotel Mode

    5.3. Hotel mode 1. Purpose Restrict a function for hotels. item Function 2. Access command to the Hotel mode setup menu Mode Select hotel mode off/on In order to display the Hotel mode setup menu, please Input Select input signal modes. enter the following command (within 2 second).

  • Page 12: Data Copy By Sd Card

    5.4. Data Copy by SD Card 5.4.1. 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 SD card 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 SD card and then copy to other TVs.
  • Page 13 5.4.3. Data copy from TV set to SD Card 1. Turn on the TV set. 2. Insert SD card with a startup file (pwd file) to SD slot. 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 SD card.
  • Page 14 5.4.4. Data copy from to SD Card to TV set 1. Turn on the TV set. 2. Insert SD card with Data to SD slot. 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 SD card to TV set.

  • Page 15: Troubleshooting Guide

    6 Troubleshooting Guide Use the self-check function to test the unit. 1. Checking the IIC bus lines 2. Power LED Blinking timing 6.1. Check of the IIC bus lines 6.1.1. How to access 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

    6.2. 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.

  • Page 17: No Power

    6.3. No Power First check point There are following 2 states of No Power indication by power LED. 1. No lit 2. Red is lit then turns red blinking a few seconds later. (See 6.2.)

  • Page 18: Disassembly And Assembly Instructions

    7 Disassembly and Assembly Instructions 7.1. Pedestal 7.3. AC cord 1. Lay down the unit so that the rear cover faces upward. 1. Remove the screw and Remove the AC cord bracket. 2. Remove the 4 screws. 2. Remove the bushing of the AC cord from the AC cord 3.

  • Page 19: Side Av Bracket

    7.5. Side AV bracket 7.7. Control panel 1. Remove the 1 screw (D). 1. Disconnect the connector (K1). 2. Remove the 1 screw (E). 2. Remove the 2 screws. 3. Remove the side AV bracket. 3. Remove the control panel. 7.6.

  • Page 20: Metal Bracket Ch Frame

    7.9. Metal bracket CH frame 3. Remove the 2 screws. 4. Remove the Metal bracket P right. 1. Remove the 4 screws. 2. Remove the Metal bracket CH frame. 7.10. Metal bracket P top & Metal bracket P right 7.11. Metal bracket vertical 1.

  • Page 21: Metal Bracket

    7.12. Metal bracket 7.14. LCD Panel 1. Remove the 6 screws (F). 1. Remove the 6 screws (H). 2. Remove the 8 screws (G). 2. Remove the LCD side MTG. 3. Remove the Metal bracket top and Metal bracket bottom. 3.

  • Page 22: Emi Processing

    7.16. EMI processing...

  • Page 30: Measurements And Adjustments

    8 Measurements and Adjustments 8.1. Voltage chart of A-board VOLTAGE TEST POINT SPECIFICATION (Reception state) STB3.3V TP4716 3.3 ± 0.16 V SUB5V TP4724 5 ± 0.25 V PANEL12V TP5413 12 ± 0.6 V SOUND15V TP2765 18 ± 2 V TP2768 6.1 ±...

  • Page 31: Block Diagram

    9 Block Diagram 9.1. Main Block Diagram DIGITAL SIGNAL PROCESSOR TMDS DATA HDMI1 HDMI I/F TMDS DATA HDMI2 RECEIVER SD CARD DATA TMDS DATA SD CARD (SIDE) HDMI3 SD CARD DATA SLOT IFD_OUT FRONT END Nile-TCON SIF_OUT PROCESSOR DDR2 TUNER EEPROM STB5V STB3.3V...

  • Page 32: Block (1/2) Diagram

    9.2. Block (1/2) Diagram DIGITAL SIGNAL PROCESSOR POWER LED REMOTE RECEIVER C.A.T.S. SENSOR D2500 SN2501 POWER LED C.A.T.S. R_LED_ON POWER LED(R) SENSOR C.A.T.S. C.A.T.S. RM2501 REMOTE IN REMOTE IN SUB5V REMOTE PA4803 SUB+5V RECEIVER STB3.3V STB+3.3V SOUND15V F15V KEYSCAN1 KEYSCAN1 CONTROL PANEL ASSY KEYSCAN3 KEYSCAN3...

  • Page 33: Block (2/2) Diagram

    9.3. Block (2/2) Diagram SPEAKER_L SPEAKER_R JK2102 D2142 JK2101A JK4500 JK2108A OPTICAL VIDEO2 JK8502 JK4502 JK4501 HDMI IN 3 AUDIO (SIDE) COMP1 VIDEO1 TU8302 SD CARD HDMI IN 1 HDMI IN 2 ANT IN (SIDE) TUNER SUB3.3V_SD IIC0_TU IC5613 3.3V IIC0_TU FACTORY IIC1...

  • Page 35: Wiring Connection Diagram

    10 Wiring Connection Diagram 10.1. 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. 10.2. Wiring...

  • Page 37: Schematic Diagram

    11 Schematic Diagram 11.1. Schematic Diagram Notes...

  • Page 38: A-Board (1/12) Schematic Diagram

    11.2. A-Board (1/12) Schematic Diagram A-BOARD TXN/A10QHMS (1/12) IC8001 C1AB00003249 Nile-TCON GPIO/IRQ_MCU DVSS/AVSS SUB1.2V IC8001 IC8001 AC19 DDR_VCC_POST L8006 IC8001 IC8001 J0JHC0000045 IC8001 IC8001 AD18 C8030 C8033 IC8001 VDDC IC8001 VDD12HDMI IC8001 IC8001 AE19 C8049 C8082 C8127 IC8001 VDDC 6.3V IC8001 VDD12HDMI IC8001...

  • Page 39: A-Board (2/12) Schematic Diagram

    11.3. A-Board (2/12) Schematic Diagram A-BOARD TXN/A10QHMS (2/12) IC8001 IC8002 C1AB00003249 C3ABSY000043 Nile-TCON DDR2 DDR2IF 84FBGA DDR2 800Mz x 16bit SUB1.8V DDR_VCC_POST L8000 J0JHC0000045 CH0DM0 DDRDM0 AD10 IC8001 IC8002 C8097 CH0DM1 DDRDM1 AD13 IC8001 IC8002 IC8002 CH0DQS0_N C8105 IC8002 VDDQ DDRDQSN0 IC8001 IC8002...

  • Page 40: A-Board (3/12) Schematic Diagram

    11.4. A-Board (3/12) Schematic Diagram A-BOARD TXN/A10QHMS (3/12) SUB3.3V TP8509 C8503 0.1u R8538 4.7k TP8510 TO 1/12 24KEC_EEP_WP TP8512 R8510 24KEC_I2CCLK2_EEP TP8511 TO 12/12 R8511 24KEC_I2CDATA2_EEP *IC8503 TVRR343AAS EEPROM R8515 AA_ED0 EXB2HV680JV EBDAT0 AA_ED1 EBDAT1 STB3.3V AA_ED2 EBDAT2 AA_ED3 EBDAT3 AA_ED4 EBDAT4 L8500...

  • Page 41: A-Board (4/12) Schematic Diagram

    11.5. A-Board (4/12) Schematic Diagram A-BOARD TXN/A10QHMS (4/12) SUB3.3V SUB5V SUB3.3V D5670 B0ACCJ000048 VOUT C5700 C5701 SUB1.2V 6.3V 6.3V 4.7u 4.7u IC5606 ON/OFF IC5605 F15V C0DBAYY00755 L5613 SUB1.2V C0DBAGF00030 *R5705 C5695 J0JHC0000075 0.01u SUB3.3V C5734 C5731 C5692 BOOT C5733 C5730 C5694 0.1u SUB1.2V...

  • Page 42: A-Board (5/12) Schematic Diagram

    11.6. A-Board (5/12) Schematic Diagram L2123 C2103 J0JCC0000287 R2307 6.3V RF_V TO 1/12 TO 9/12 RF_V VCVS1IN U_TU_V/A_TU_V A-BOARD TXN/A10QHMS (5/12) US AV1_S R2336 C2304 AS AV2_S 6.3V VY1IN U_AV1_S_Y/A_AV2_S_Y TO 1/12 R2337 C2303 0.1u VC1IN U_AV1_S_C/A_AV2_S_C US AV1 L2125 C2214 J0JCC0000287 R2301...

  • Page 43: A-Board (6/12) Schematic Diagram

    11.7. A-Board (6/12) Schematic Diagram A-BOARD TXN/A10QHMS (6/12) R2384 R2385 R2386 SUB3.3V R2387 *R2327 VJ2117 SOS(3.12V) I2C/I2S/RESET OPERATE AUDIO_XRST TO 1/12 RESET AUDIO_XRST L2126 L2127 24KEC_I2CDATA1_AMP J0JYC0000068 24KEC_I2CDATA1_AMP J0JYC0000068 TO 12/12 24KEC_I2CCLK1_AMP SOUND15V 24KEC_I2CCLK1_AMP C2222 R2300 R2342 J0JBC0000116 48KHz LRCLK_POST LRCLK C2226 R2303...

  • Page 44: A-Board (7/12) Schematic Diagram

    11.8. A-Board (7/12) Schematic Diagram A-BOARD TXN/A10QHMS (7/12) SUB1.8V STB3.3V SUB1.2V STB3.3V STB3.3V SUB5V IC4700 C1ZBZ0004161 R4809 R4831 R4821 R4830 R4748 R4753 100k 100k ANALOG-ASIC SUB5V Q4703 Q4704 STB5V C4700 Q4702 SC_OHZ DSC2001S0L 6.3V DSC2001S0L DSC2001S0L R4752 C4779 P3.3V D_SOS_RSV 6.3V *R4742 C4772...

  • Page 45: A-Board (8/12) Schematic Diagram

    11.9. A-Board (8/12) Schematic Diagram A-BOARD TXN/A1QHMS (8/12) *R4520 R4519 R4515 HPLUG_B HPLUG_A HPLUG_B HPLUG_C *R4565 *R4507 R4566 R4504 TO 1/12 R4567 R4506 DDC5V_B DDC5V_A DDC5V_B DDC5V_C *C4541 C4540 6.3V 6.3V C4539 6.3V R4526 TO 1/12 *R4525 *R4505 R4502 R4527 R4503 4.7k 4.7k...

  • Page 46: A-Board (9/12) Schematic Diagram

    11.10. A-Board (9/12) Schematic Diagram A-BOARD TXN/A10QHMS (9/12) TO 1/12 RF_AFT RF_V TO 5/12 SUB5V R8307 SUB5V AG_RF_AFT *R8335 C8370 TP8302 L8306 0.1u J0JHC0000045 RF_V C8313 R8337 R8334 R8330 C8315 2.2k 0.1u R8302 *R8341 1000p SUB5V_TUNER Q8305 TU_SIF SIFIN C8312 B1ADCE000022 R8332 180p...

  • Page 47: A-Board (10/12) Schematic Diagram

    11.11. A-Board (10/12) Schematic Diagram A-BOARD TXN/A10QHMS (10/12) *JK2101A K1U812A00001 AV TERMINAL U_AV1_V/A_AV2_V__TERMINAL *JK2108A U_AV1_L/A_AV2_L__TERMINAL K1FY315A0006 PC IN U_AV1_R/A_AV2_R__TERMINAL R3124 Y-SW U_NONUSE_A_AV1_YSW__TERMINAL TP3101 PDP_U_YPBPR2_Y/LCD_U_YPBPR1_Y/A_AV1_Y__TERMINAL R3015 PC_R_TERMINAL R3125 PDP_U_YPBPR2_PB/LCD_U_YPBPR1_PB/A_AV1_PB__TERMINAL TP3102 TO 5/12 R3016 PC_G_TERMINAL PDP_U_YPBPR2_PR/LCD_U_YPBPR1_PR/A_AV1_PR__TERMINAL R3126 TP3103 TO 5/12 R3017 PC_B_TERMINAL TP3104 R3026 PC_HD_TERMINAL...

  • Page 48: A-Board (11/12) Schematic Diagram

    11.12. A-Board (11/12) Schematic Diagram A-BOARD TXN/A10QHMS (11/12) Nile-TCON TO LCD PANEL LVDS OUT *A21 *R4861 ZWEI2 PANEL_AGW/AVDD_ENB *R4806 PANEL_TEST_ON/VDD25_EN OENB OEBLK *FL4201 *R4232 EXC28CE201U EXB28VR000X Rx1- RB_E- RB_E+ *TP4239 Rx1+ LVDSSEL LVDSSEL RA_E- Rx0- *R4359 Rx0+ RA_E+ 3.3k *R4358 9.1k *FL4202 *R4238...

  • Page 49: Diagram

    11.13. A-Board (12/12) and V-Board Schematic Diagram A-BOARD TXN/A10QHMS (12/12) to HDMI1/2 SDA_DDC_BH TO 8/12 CONNECTER for LCD SCL_DDC_BH LCD model A-P CONNECTOR to INV SUB5V INV LED SUB5V R2767 Q2761 *R2780 *TP2786 R4601 R4602 B1ABCF000231 R2769 Q2760 B1ABCF000231 TO 1,11/12 TO 1,11/12 *D2753 P-BOARD...

  • Page 50: Prevention Of Electrostatic Discharge (Esd) 12 Printed Circuit Board

    12 Printed Circuit Board 12.1. A-Board A-BOARD (FOIL SIDE) TXN/A10QHMS Q 4 8 0 4 Q 4 8 0 5 Q 4 6 2 0 R4891 R4889 D4801 TP4603 R4887 R4003 R4892 Q4805 R7116 IC7000 TP4602 C4863 R7115 Q4620 R7114 D4820 ZA5415 ZA5409...
  • Page 51 A-BOARD (COMPONENT SIDE) TXN/A10QHMS JS1000 JS1001 JS1002 R4621 JS1003 JS1004 JS1005 A 1 3 JS1006 JS1007JS1008 JS1010 JS1013 JS1022 JS1025 G ( G A ) H ( H A ) J ( J A ) JS1011 JS1014 JS1023 JS1026 L8501 K ( K A ) L ( L A ) M ( M A )

  • Page 52: V-Board

    12.2. V-Board V-BOARD (FOIL SIDE) TXN/V10QHMM T P 2 5 0 7 T P 2 5 0 0 T P 2 5 0 2 TP2507 TP2500 T P 2 5 0 1 TP2502 TP2501 TP2506 T P 2 5 0 4 P b F T P 2 5 0 3 TP2503...

  • Page 53: Exploded View And Replacement Parts List

    13 Exploded View and Replacement Parts List 13.1. Exploded View and Mechanical Replacement Parts List 13.1.1. Exploded View...
  • Page 54 13.1.2. Accessories...
  • Page 55 13.1.3. Mechanical Replacement Parts List...
  • Page 56 Ref. Safety Part No. Part Name & Description Q'ty Remarks 10030-0047500 BATTERY COVER 1 PAVCA EAS16S789A SP UNIT K0RB00700018 CONTROL PANEL COMP 1 CIRCUIT BOARD&PANEL PAVCA K1PY51Y00040 LVDS CABLE 1 PAVCA K2CB2YY00017 AC CORD 1 PAVCA L5EDDAT00008 LCD PANEL 1 PAVCA N2QAYB000485 REMOTE CONTROLLER 1 PAVCA...

  • Page 57: Electrical Replacement Parts List

    13.2. Electrical Replacement Parts List 13.2.1. Replacement Parts List Notes...
  • Page 58 13.2.2. Electrical Replacement Parts List Safety Ref. No. Part No. Part Name & Pcs Remarks Description Safety Ref. No. Part No. Part Name & Pcs Remarks C2514 F1J1A106A087 C 0.010UF, K, Description C2700,01 F1G1E1030005 C 0.01UF, Z, 25V N0AE4GK00003 CIRCUIT BOARD P PAVCA C4125,26 F1G1E1030005 C 0.01UF, Z, 25V...
  • Page 59 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description C8022 F1G1C103A116 C 0.010UF, K, C8145 F1G1C104A077 C 0.10UF, K, 16V C8146 F1G1H1020008 C 1000UF, 50V C8023 F1G1H5R0A564 C 5.0UF, 50V C8147 F1G1C104A077 C 0.10UF, K, 16V C8024...
  • Page 60 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description Q5612,13 B1ABCF000231 TRANSISTOR IC2106 C1AB00003069 IC Q5615 B1ABGC000011 TRANSISTOR IC2110 C0JBAB000854 IC PAVCA Q5616 DSC2001S0L TRANSISTOR IC4700 C1ZBZ0004161 IC Q8002,03 B1ABCF000231 TRANSISTOR IC4701...
  • Page 61 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R2388 ERJ2GEJ220 M 22 OHM, R4548 ERJ2GEJ220 M 22 OHM, J,0.063W J,0.063W R2391 D1BB75R0A055 M 75 OHM, 1/10W R4549,50 ERJ2GEJ151 M 150 OHM,...
  • Page 62 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R5608 D0GA222JA015 M 2.2KOHM, R8043 D0GA473JA015 M 47KOHM, J,0.063W J,0.063W R5610 D0GA471JA015 M 470OHM, R8044 ERJ2GEJ102X M 1K OHM J 1/4W J,0.063W R8045 D0GA473JA015 M 47KOHM,...
  • Page 63 Safety Ref. No. Part No. Part Name & Pcs Remarks Safety Ref. No. Part No. Part Name & Pcs Remarks Description Description R8332 ERJ2GEJ220 M 22 OHM, X8000 H0J250500094 CRYSTAL PAVCA J,0.063W R8333 D0GA122JA015 M 1.2KOHM, ZA5400-02 K4ZZ01000267 TERMINAL J,0.063W ZA5405 K4ZZ01000267 TERMINAL R8334...

Table of Contents