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Panasonic TC-19LX50 Service Manual
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Panasonic TC-19LX50 Service Manual

Panasonic TC-19LX50 Service Manual

Lh44 chassis
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Specifications

Power Source
Power Consumption
LCD
Screen Size
(W × H × diagonal)
Channel Capability
Sound
Speakers
Audio Output
Headphones
FEATURES
Operating Conditions
Connection Terminals
INPUT
COMPONENT
VIDEO INPUT
OUTPUT
TC-19LX50
TC-23LX50
TC-19LE50
TC-23LE50
LH44 Chassis
AC 120 V, 60 Hz
Average use : 66 W (TC-19LX50, TC-19LE50)
Average use : 83 W (TC-23LX50, TC-23LE50)
Stand-by condition : 0.11 W
Power off : 0.1 W
1280 × 768 pixels widescreen LCD panel (TC-19LX50, TC-19LE50)
1366 × 768 pixels widescreen LCD panel (TC-23LX50, TC-23LE50)
16.3 " × 9.8 " ×18.9 " (413 mm × 248 mm × 481 mm) (TC-19LX50, TC-19LE50)
20.0 " × 11.3 " ×23.0 " (508 mm × 286 mm × 583 mm) (TC-23LX50, TC-23LE50)
VHF-12 : UHF-56 : Cable-125
Ø5 cm × 2 pcs, 8 W (TC-19LX50, TC-19LE50)
Ø6 cm × 2 pcs, 8 W (TC-23LX50, TC-23LE50)
8 W [4 W + 4 W] (10%THD)
M3 (3.5 mm) Jack × 1
3D Y/C Digital Comb Filter, CLOSED CAPTION, V-Chip
Temperature : 41 °F - 95 °F (5 °C - 35 °C)
Humidity : 5 % - 90 % RH (non-condensing)
VIDEO (RCA PIN Type ×1) ×2
S-VIDEO (MINI DIN 4pin ×1) ×2
AUDIO L-R (RCA PIN Type ×2) ×2
Y ×1
P
/ P
×1
B
R
AUDIO L-R (RCA PIN Type ×2) ×1
AUDIO L-R (RCA PIN Type ×2) ×1
ORDER NO. ITD0503010CE
LCD Television
1.0 Vp-p (75 W)
Y : 1.0 Vp-p (75 W),
C : 0.286 Vp-p (75 W)
0.5 Vrms
1.0 Vp-p
(including synchronization)
±0.35 Vp-p
0.5 Vrms
0.5 Vrms
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
Unauthorized
distribution is a violation of law.
B05
Canada:B07
copying
and

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Summary of Contents for Panasonic TC-19LX50

  • Page 1: Specifications

    1366 × 768 pixels widescreen LCD panel (TC-23LX50, TC-23LE50) Screen Size 16.3 “ × 9.8 “ ×18.9 “ (413 mm × 248 mm × 481 mm) (TC-19LX50, TC-19LE50) (W × H × diagonal) 20.0 “ × 11.3 “ ×23.0 “ (508 mm × 286 mm × 583 mm) (TC-23LX50, TC-23LE50)

  • Page 2: Table Of Contents

    Dimensions ( W × H × D ) Including TV Stand 20.2 “ × 18.1 “ × 10.2 “ (514 mm × 459 mm × 259 mm) (TC-19LX50, TC-19LE50) 24.1 “ × 19.9 “ ×10.2 “ (612 mm × 505 mm × 259 mm) (TC-23LX50, TC-23LE50) TV Set Only 20.2 “...

  • Page 3: Safety Precautions

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Caution Be sure no power is applied to the chassis or circuit, and observe all other safety precautions. 8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise hamless motion such as the brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD) sufficient to damage an ES device).

  • Page 4: Location Of Controls And Components

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 3 Location of Controls and Components Board Name Function A-Board Main (AV Switch, Audio, MCU, Grobal Core, AV connector ) V-Board Remote Reciever K-Board Power switch, Control swtich AP-Board DC-DC Power Unit Power (AC/DC), None serviceable.

  • Page 5: Service Mode

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 4 Service Mode 4.1. How to enter into adjustment mode While pressing [VOLUME- ] button of the main unit, press [RECALL] button of the remote control three times in a row (within 2 seconds).

  • Page 6: Troubleshooting Guide

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 5 Troubleshooting Guide 5.1. Self-check function When phenomena like "the power fails from time to time" or "the video/audio fails from time to time" can not be confirmed at the time of servicing, the self-check function can be used to confirm the occurrence and to limit the scope for the defective circuits.Also, when "the power fails from time to time", display on the screen can be used to confirm the occurrence and to limit the scope for...

  • Page 7: Disassembly And Assembly Instructions

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 6 Disassembly and Assembly Instructions 6.1. Removing the hinge cover 6.4. Removing the back cover (TC- 19LX50/LE50) 1. Lay down the unit so that the rear cover faces upward. 2. Remove the screw.

  • Page 8: Removing The Shield Cover

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 6.6. Removing the shield cover 6.8. Removing the chassis 1. Remove the 5 screws. 1. Remove the 5 screws. 2. Remove the shield cover. 2. Disconnect the coupler (A2, A5, AP5 and AP6).

  • Page 9: Removing The Speaker, And V-Board

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 6.10. Removing the speaker, and V- 6.11. Removing the LCD mount Board metal 1. Remove the 8 screws. 1. Remove the 5 screws. 2. Remove the speaker. 2. Remove the LCD mount metal (bottom).

  • Page 10: Removing The Lcd Panel (Tc-19Lx50/Le50)

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 6.13. Removing the LCD panel (TC- 19LX50/LE50) 1. Remove the 14 screws. 2. Remove the LCD panel. 6.14. Removing the LCD fixing metal 1. Remove the 4 screws. 2. Remove the LCD fixing metal (L/R)

  • Page 11: Location Of Lead Wiring

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 6.15. Location of Lead Wiring...

  • Page 12: Measurements And Adjustments

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 7 Measurements and Adjustments 7.1. Video Signal Level Adjustment (RF) Instrument Name Connect to Remarks 1. Remote controller RF in 2. RF signal 3. SG 1. Receive studio color bar by RF signal input.

  • Page 13: Block Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 8 Block Diagram 8.1. Block Diagram (1 of 3) AP-BOARD K-BOARD Q861 MAIN+9V R3815 R3816 R3817 R3818 R3821 Q862 IC851 DC-DC ON/OFF SUB+9V TV/VTR D869 D873 KEYSCAN 11V(SUB_9V OVP) SW3808 POWER SWITCH...

  • Page 14: Block Diagram (2 Of 3)

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 8.2. Block Diagram (2 of 3) COMPONENT VIDEO1 VIDEO2 MONITOR A-BOARD IC2202 MTS DEMODULATER JK3001A IC2301 FILTER DEMODU SOUND CONTROL IC2302 C2323 MATRIX 16V 100u +5V(M) MAIN-L AUDIO OUT L AMP L OUT...

  • Page 15: Block Diagram (3 Of 3)

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 8.3. Block Diagram (3 of 3) V-BOARD R(+) L_ch(+) R_hp(+) Q1002 Q1004 SPEAKER(L) L_ch(-) L_hp(+) R LED DRIVE G LED DRIVE R_ch(-) L(+) SPEAKER(R) R_ch(+) L_ch(-) D1008 R_ch(-) Q1008 POWER LED L_ch(+) L(+)

  • Page 16: Wiring Connection Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 9 Wiring Connection Diagram L_ch(+) SPEAKER(L) V-BOARD L_ch(-) R_ch(-) SPEAKER(R) R_ch(+) STBY+5V A-BOARD S CLOCK0B FACTORY USED S DATA0B S CLOCK0A S DATA0A S CLOCK1 FACTORY USED S DATA1 S CLOCK2 S DATA2...

  • Page 17: Schematic Diagrams

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10 Schematic Diagrams 10.1. Schematic Diagram Notes...

  • Page 18: A-Board (1 Of 6) Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.2. A-Board (1 of 6) Schematic Diagram SDA1 SCL1 *R2208 A-BOARD (1/6) 2.2k TXN/A10LFM (TC-19LE50/LX50) R2354 R2384 TXN/A10LEM (TC-23LE50/LX50) R2355 R2385 R2356 R2386 *C2201 0.01u R2357 R2387 *IC2202 *JS001 AN5829S-E1V C2323 100u C2326...

  • Page 19: A-Board (2 Of 6) Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.3. A-Board (2 of 6) Schematic Diagram *R4321 100k AP-BOARD AK_DL (AP3) *R4322 100k AK_DR *R4323 A-BOARD (2/6) 100k SW9V AK_DY/JPEG_Y MAIN3.3V JS4012 *R4324 *C3150 TXN/A10LFM (TC-19LE50/LX50) C3148 *Q3007 100k AK_DC/JPEG_C 180p R3170...

  • Page 20: A-Board (3 Of 6) Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.4. A-Board (3 of 6) Schematic Diagram A-BOARD (3/6) TXN/A10LFM (TC-19LE50/LX50) TXN/A10LEM (TC-23LE50/LX50) AP-BOARD (AP4) C4155 C4156 0.01u 0.1u PANEL_5V STB5V JS4043 AL_YMAX MAIN9V X4001 C4092 R4293 H0J202500011 R4294 20.25MHz R4402 R4404 R4406 MAIN3.3V...

  • Page 21: A-Board (4 Of 6) Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.5. A-Board (4 of 6) Schematic Diagram C1AB00002186 LCD_SS LCD_MUTE MAIN3.3V LCD_ENB R4123 IC4016 GOE0 IC4016 ROE0 IC4016 BOE0 IC4016 HSOE LCD_BL2 LCD_BL0 LCD_BL1 MAIN1.8V_GC R4140 VDDI IC4016 GOE1 IC4016 ROE1 IC4016...

  • Page 22: A-Board (5 Of 6) Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.6. A-Board (5 of 6) Schematic Diagram R4215 SDRAM A IC4016 YINC0 BS_OSD2HSO OSD2HSO IC4016 UVINC0 IC4016 YINC1 BS_OSD2VSO IC4016 UVINC1 OSD2VSO BS_YIN0 DQA0 DQA16 IC4016 YINC2 BS_UVIN0 IC4016 AF12 DQA0 IC4016 DQA16...

  • Page 23: A-Board (6 Of 6) Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.7. A-Board (6 of 6) Schematic Diagram A-BOARD (6/6) TXN/A10LFM (TC-19LE50/LX50) TXN/A10LEM (TC-23LE50/LX50) STB3.3V STB3.3V IC1103 AK_VOL C0CBCBC00062 R1102 MAIN3.3V STB5V C1189 R1240 C1188 4.7k D1109 0.1u 0.1u B0HCMM000014 R1103 R1136 R1281 R1282 4.7k...

  • Page 24: Ap-Board Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.8. AP-Board Schematic Diagram JS858 IC855 SOUND_10V OVP C0DAAZG00006 SOUND_10V D877 D878 L857 R876 R943 34.2 10.0 MAZ81300ML MA2J11100L 5.36k C898 TP862 0.1u R877 C889 R869 L865 6800p C873 220u L863 MAIN_ACT C869...

  • Page 25: K-Board And V-Board Schematic Diagram

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 10.9. K-Board and V-Board Schematic Diagram SPEAKER K-BOARD TNPA3526AB V-BOARD TNPA3527AB JS3811 HEADPHONE D2102 MAZ81400ML L_ch(+) L(+) ALLOFF L_hp(+) A-BOARD R_hp(+) STBY5V R(+) (A2) RELAY R_ch(+) PUSH S-GND KEYSCAN Q1002 Q1004 R(+) SW3808...

  • Page 26: Printed Circuit Views 11.1. A-Board

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 11 Printed Circuit Views 11.1. A-Board A-BOARD (FOIL SIDE) TXN/A10LEM (TC-23LE50/LX50) TXN/A10LFM (TC-19LE50/LX50) R4075 C4060 D4003 R4076 R4084 C4311 C4061 JS4041 JS4019 C4164 C4357 C4063 R4077 FL4009 JS4018 C4363 R4268 R4078 C4067 FL4003...
  • Page 27 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Parts Location Parts Location A-BOARD (FOIL SIDE) A-BOARD (COMPONENT SIDE) TRANSISTOR Q3007 TRANSISTOR Q4011 Q3008 Q4012 IC001 Q001 IC1101 Q1105 Q3009 Q4013 IC1102 Q002 IC1105 Q1108 Q3010 Q4014 IC1103 Q1101 IC1107 Q2304 Q3012...
  • Page 28 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 A-BOARD (COMPONENT SIDE) TXN/A10LEM (TC-23LE50/LX50) TXN/A10LFM (TC-19LE50/LX50) JS1102 IC1107 R1238 JS1101 JS4017 JS4022 JS4021 JS4016 ZA4005 R4238 R4237 R1270 C1184 ZA4017 C4239 ZA4007 R4211 C4250 R4287 D3033 L4001 R3124 Q3004 MONOUT MONOUT JS4010...

  • Page 29: Ap-Board

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 11.2. AP-Board AP-BOARD (FOIL SIDE) TNPA3525AB D884 TNPA3525 1 AP D890 L852 R905 Q865 R913 C922 REVERSE FOR ORDER R907 R924 C923 C853 C851 C907 Q864 R938 R922 R915 D879 R891 C858 L866...

  • Page 30: K-Board And V-Board

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 11.3. K-Board and V-Board V-BOARD (FOIL SIDE) TNPA3527AB C2106 C2104 C2103 JS1001 RM1001 R1029 R1015 D1009 Q1008 Q1009 JS1002 R1013 D1017 Q1001 Q1003 C2102 R1022 D1013 C1011 C2101 R1032 R1031 D1008 R1007...
  • Page 31 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50...

  • Page 32: Exploded View And Replacement Parts List

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 12 Exploded View and Replacement Parts List 12.1. Parts Layout...

  • Page 33: Packing Exploded Views

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 12.2. Packing Exploded Views...

  • Page 34: Mechanical Replacement Parts List

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 12.3. Mechanical Replacement Parts List Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description XTB4+15JFJK SCREW 19 TC- 19LE50/LX50 EAS5P136A SPEAKER UNIT 19LE50/LX50 XTB4+15JFJK SCREW 12 TC-...

  • Page 35: Electrical Parts List

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 13 Electrical Parts List 13.1. Electrical Parts List Notes...

  • Page 36: Electrical Replacement Parts List

    TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 13.2. Electrical Replacement Parts List Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description C1188,8 ECJ0EB1A104K C 0.1UF, K, 10V TJS6A9380 16P CONNECTOR C1190 ECJ0EB1C103K C0.010UF, K, 16V...
  • Page 37 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description C3061 ECJ2FB0J106M C 10UF, Z,6.3V C4045 ECJ0EC1H680J C 680PF, K, 50V C3064,6 ECJ0EB1C103K C0.010UF, K, 16V C4046 ECJ0EB1A104K C 0.1UF, K, 10V...
  • Page 38 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description C4152 ECJ0EC1H820J C 820PF, K, 50V C4260 ECJ0EB1C682K C 6800UF, K, 16V C4155 ECJ0EB1C103K C0.010UF, K, 16V...
  • Page 39 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description D3033,3 MA8140M ZENER DIODE JS4026- ERJ2GE0R00 M 0.0 OHM, J,0.063W D3036- MA8140M ZENER DIODE JS4031- ERJ2GE0R00 M 0.0 OHM, J,0.063W...
  • Page 40 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description Q2309- UN2211 TRANSISTOR R908 ERJ6GEYJ152 M 1.5KOHM,J,1/10W R909 ERJ3GEYJ222 M 2.2KOHM,J,1/16W Q2312,1 2SD602 TRANSISTOR R910 ERJ6GEYJ153...
  • Page 41 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description R1146 ERJ2GEJ101 M 100 OHM, R1281,8 ERJ2GEJ473 M 47KOHM,J,0.063W J,0.063W R1147 ERJ2GEJ104 M 100KOHM, R2010 ERJ2GEJ104 M 100KOHM, J,0.063W...
  • Page 42 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description R2360 ERJ2GEJ222 M 2.2KOHM, R3166 ERJ3EKF2200 M 220 OHM, 1/16W J,0.063W R3167 ERJ3EKF6801 M 6.8KOHM, 1/16W R2363- ERJ2GEJ103 M 10KOHM, J,0.063W...
  • Page 43 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description R4103 D1HG5608A002 NETWORK RESISTER R4180 ERJ2GE0R00 M 0.0 OHM, J,0.063W R4106,0 D1HG5608A002 NETWORK RESISTER R4181 D1HG5608A002 NETWORK RESISTER...
  • Page 44 TC-19LX50 / TC-23LX50 / TC-19LE50 / TC-23LE50 Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description R4311 ERJ2GEJ751 M 750 OHM, J,0.063W R4313,1 ERJ2GEJ104 M 100KOHM, J,0.063W R4321- ERJ2GEJ104 M 100KOHM, J,0.063W R4329,3 ERJ2GEJ103 M 10KOHM, J,0.063W...

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Tc-23lx50Tc-19le50Tc-23le50

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