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Specifications
Power Source
Power Consumption
LCD
Screen Size
Sound
Speaker
Audio Output
Headphones
Receiving Systems/ Band name
Receiving Channels
AC 110-240 V, 50 / 60 Hz
Average use : 87 W
Standby condition : 0.5 W
22.9 - inch (58.3 cm)
Wide XGA (1366 × 768 pixels) 16:9 aspect ratio LCD panel.
508 mm (W) × 286 mm (H) (20.0" × 11.3")
Ø6 cm × 2 pcs, 8 W
6 W (3 W + 3 W), 10 % THD
M3 (3.5 mm) Jack × 1
Regular TV
GLP2W Chassis
© 2005 Matsushita Electric Industrial Co., Ltd. All
rights
reserved.
distribution is a violation of law.
ORDER NO. ITD0505026CE
LCD TV
Unauthorized
copying
and
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Table of Contents
Related Manuals for Panasonic TX-23LX50M
Summary of Contents for Panasonic TX-23LX50M
- Page 1 ORDER NO. ITD0505026CE LCD TV GLP2W Chassis Specifications Power Source AC 110-240 V, 50 / 60 Hz Power Consumption Average use : 87 W Standby condition : 0.5 W 22.9 - inch (58.3 cm) Wide XGA (1366 × 768 pixels) 16:9 aspect ratio LCD panel. Screen Size 508 mm (W) ×...
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Page 2: Table Of Contents
TX-23LX50M / TX-23LX50A / TX-23LX50X VHF BAND 2-12 (PAL / SECAM B, K1) 0-12 (PAL B AUST.) 1-9 (PAL B N.Z.) 1-12 (PAL / SECAM D) 1-12 (NTSC M Japan) 2-13 (NTSC M USA) UHF BAND 21-69 (PAL G, H, I / SECAM G, K, K1) 28-69 (PAL B AUST.) - Page 3 TX-23LX50M / TX-23LX50A / TX-23LX50X 6.5. A-Board 10.3. K and V-Board 6.6. AP-Board 11 Block and Schematic Diagram 6.7. K-Board 11.1. Schematic Diagram Notes 6.8. V-Board 11.2. Main Block Diagram 6.9. Speaker 11.3. Power Block Diagram 6.10. Main chassis 11.4. Signal Block Diagram 6.11.
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Page 4: Safety Precautions
TX-23LX50M / TX-23LX50A / TX-23LX50X 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 5: About Lead Free Solder (Pbf)
TX-23LX50M / TX-23LX50A / TX-23LX50X 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 6: Screen Display
TX-23LX50M / TX-23LX50A / TX-23LX50X 4 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: Chassis Board Layout
TX-23LX50M / TX-23LX50A / TX-23LX50X 5 Chassis Board Layout Board Name Function A-Board Main (AV connector, AV Switch, Tuner, Audio & Video Processor, MCU, LCD Driver, LVDS) V-Board Remote Receiver, LED, Speaker Out K-Board Power Switch, Key Scan AP-Board Power Supply, Power Regulator... -
Page 8: Disassembly For Service
TX-23LX50M / TX-23LX50A / TX-23LX50X 6 Disassembly for Service 6.1. Pedestal ass’y 6.2. Rear cover 1. Lay down the main unit so that the rear cover faces upward. 1. Remove the fixing screws (15pcs and 2pcs 2. Remove the fixing screw (1pcs 2. -
Page 9: Power Unit
TX-23LX50M / TX-23LX50A / TX-23LX50X 6.4. Power unit 6.6. AP-Board 1. Disconnect the couplers (P1 and P2). 1. Disconnect the couplers (AP1, AP2 and AP5). 2. Remove the fixing screws (5pcs 2. Disconnect the bridge connector (A3 and A4 on A-Board). -
Page 10: V-Board
TX-23LX50M / TX-23LX50A / TX-23LX50X 6.8. V-Board 6.10. Main chassis 1. Remove the fixing screws (2pcs 1. Remove the fixing screw (1pcs 2. Disconnect the earth cable. 3. Remove the fixing screws (6pcs 4. Disconnect the couplers (A2, A5, AP2, AP5, CN101 and 5. -
Page 11: Lead Of Wiring
TX-23LX50M / TX-23LX50A / TX-23LX50X 7 Lead of Wiring... -
Page 12: Service Mode Function
TX-23LX50M / TX-23LX50A / TX-23LX50X 8 Service Mode Function MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and adjustment can be adjusted by remote control in Service Mode. 8.1. How to enter SERVICE 1 1. - Page 13 TX-23LX50M / TX-23LX50A / TX-23LX50X...
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Page 14: Option Description
TX-23LX50M / TX-23LX50A / TX-23LX50X 8.3. Option Description... - Page 15 TX-23LX50M / TX-23LX50A / TX-23LX50X...
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Page 16: Option Code Setting
If the memory IC (IC1103) or A Board is replaced, option code should be re-memorized. Spare part of IC1103 is already memorized all Data for TX-23LX50M. If you use for other model, you should re-memorized the different option code in SERVICE 2 mode. -
Page 17: Adjustment
TX-23LX50M / TX-23LX50A / TX-23LX50X 9 Adjustment 9.1. DVCO adjustment... - Page 18 TX-23LX50M / TX-23LX50A / TX-23LX50X...
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Page 19: Conductor Views 10.1. A-Board
TX-23LX50M / TX-23LX50A / TX-23LX50X 10 Conductor Views 10.1. A-Board A-BOARD (FOIL SIDE) TXN/A10LEP C852 C853 JK001 C851 R861 C893 JS1510 R1776 JS1508 R1732 L2505 R1734 C2514 C1711 R1725 R1742 C1524 C1787 C1534 C1519 PB PR C1782 L1759 R1505 Parts Location... - Page 20 TX-23LX50M / TX-23LX50A / TX-23LX50X A-BOARD (COMPONENT SIDE) TXN/A10LEP R1736 R1716 R1702 JK001 Q1715 Q1711 Q1710 R1774 R1772 ZA4021 ZA4019 R1738 R1726 C880 C883 R1735 Q1717 R854 R1749 R855 R1752 R1773 R1753 C1793 C1789 D1105 L1703 D1106 R1522 D1107 L1502...
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Page 21: Ap-Board
TX-23LX50M / TX-23LX50A / TX-23LX50X 10.2. AP-Board AP-BOARD (FOIL SIDE) TNPA3627 L802 L801 R802 L807 C806 C802 R801 L803 IC802 IC801 IC803 2 AP L806 R811 R803 L805 L808 TNPA3627 C818 C816 REVERSE FOR ORDER R806 R808 ZA801 R810 C809... -
Page 22: K And V-Board
TX-23LX50M / TX-23LX50A / TX-23LX50X 10.3. K and V-Board K-BOARD (FOIL SIDE) TNPA3609 TV/AV FUNCTION R300 R301 R302 R303 R304 TNPA3609 COLD REVERSE FOR ORDER LIVE CIRCUIT SW890 V-BOARD (FOIL SIDE) TNPA3610 K-BOARD (COMPONENT SIDE) RM201 TNPA3610 REVERSE FOR ORDER... -
Page 23: Block And Schematic Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11 Block and Schematic Diagram 11.1. Schematic Diagram Notes... -
Page 24: Main Block Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11.2. Main Block Diagram POWER REGULATOR AUDIO VCC 9V MAIN 5V UNIT AC IN MAIN 1.8V POWER SWITCH STBY5V POWER CONTROL POWER SUPPLY POWER ON KEY CONTROL INV_24V INV_ON INV_SOS AUDIO_VCC INV_ADIM INV_PWM STB 5V 1.8V... -
Page 25: Power Block Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11.3. Power Block Diagram K-BOARD A-BOARD AC IN 110-240V POWER SWITCH CN101 50/60Hz 5.0V IC851 IC1701 SW890 TUNER TP104 ESB92DA1B V_IN V_OUT TU100 MAIN 3.3V LVDS TRANSMITTER COLD MAIN3.3V TNRMSP_5.0V TP2207 PLL_VCC SW305 SW304 SW303... - Page 26 TX-23LX50M / TX-23LX50A / TX-23LX50X 11.4. Signal Block Diagram JK201 V-BOARD IC2501 IC2251 A-BOARD MULTI SOUND PROCESSOR AUDIO AMP IC1500 HP_L AV1L SC1_IN_L DACML 28 OUT1+ SP_L+ JK001 VIDEO SIGNAL PROCESSOR AV1R DACMR 27 OUT2+ 12 SP_R+ SC1_IN_R HP_R LOUT...
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Page 27: A-Board (1 Of 3) Schematic Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11.5. A-Board (1 of 3) Schematic Diagram A-BOARD TNPH0629 (1/3) 5.0V C1502 C1504 AC_VOUT R1511 C1527 0.1u R1512 0.1u 1.5k 6.3V 1.5k 100u Q1503 2SA207700L Q1500 R1548 2SC584500L AG_LOUT Q1501 Q1502 C1241 2SA207700L 2SC584500L R1505... -
Page 28: A-Board (2 Of 3) Schematic Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11.6. A-Board (2 of 3) Schematic Diagram LCD PANEL IC2251 JS1700 A-BOARD TXN/A10LEP (2/3) AN17822A JS1701 AUDIO AMP PANEL_5V JS1702 R1704 AUDIO_9V TP851 JS1703 C1779 1000p JS1704 L2201 C2287 C2283 C2282 R1708 C2254 C2284 C2281... -
Page 29: A-Board (3 Of 3) Schematic Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11.7. A-Board (3 of 3) Schematic Diagram A-BOARD TXN/A10LEP (3/3) SBY3.3V_D C1218 C1219 0.1u 0.1u R1105 C1121 0.1u R1106 IC1103 IC1102 C3DAPC000037 C3BBKC000127 ZA4016 PROM TESA169 SDRAM ZA4017 TESA169 ZA4018 TESA169 ZA4019 TESA169 C1119 0.1u... -
Page 30: Ap, K And V-Board Schematic Diagram
TX-23LX50M / TX-23LX50A / TX-23LX50X 11.8. AP, K and V-Board Schematic Diagram TP301 TP302 TP303 KEY_SCAN R300 R301 R302 R303 R304 6.8k AP-BOARD TNPA3627 SW305 SW301 SW302 SW303 SW304 TP821 TP820 EVQPC105K EVQPC105K EVQPC105K EVQPC105K EVQPC105K A-BOARD TP802 (A4) TP817... -
Page 31: Parts Location & Mechanical Replacement Parts List
TX-23LX50M / TX-23LX50A / TX-23LX50X 12 Parts Location & Mechanical Replacement Parts List 12.1. Parts Location... -
Page 32: Packing Exploded Views
TX-23LX50M / TX-23LX50A / TX-23LX50X 12.2. Packing Exploded Views... -
Page 33: Mechanical Replacement Parts List
TX-23LX50M / TX-23LX50A / TX-23LX50X 12.3. Mechanical Replacement Parts List Ref. Part No. Part Name & Remarks Description TZSA03013T LCD PANEL EAS6P125A SPEAKER UNIT J0KG00000011 FLAT CORE J0KG00000054 NOISE FILTER J0KG00000100 FILTER K2CT2DZ00010 AC CORD TX-23LX50M/X K2CJ2DZ00014 AC CORD TX-23LX50A... -
Page 34: Electrical Replacement Parts List
TX-23LX50M / TX-23LX50A / TX-23LX50X 13 Electrical Replacement Parts List 13.1. Replacement Parts List Notes... -
Page 35: Electrical Replacement Parts List
TX-23LX50M / TX-23LX50A / TX-23LX50X 13.2. Electrical Replacement Parts Ref. Part No. Part Name & Remarks Description List C1214- ECJ1XB1C104K C 0.1UF, Z, 16V C1217- ECJ1XF1C104Z C 0.1UF, Z, 16V Ref. Part No. Part Name & Remarks Description C1221,2 ECJ1XB1C104K C 0.1UF, Z, 16V... - Page 36 TX-23LX50M / TX-23LX50A / TX-23LX50X Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description C1778,7 ECJ1XB1H102K C 1000UF, Z, 50V FL1704 F1J1A1050020 C 1UF, Z, 50V C1781,8 ECJ1VF1H103Z C 0.010UF, Z, 50V FL1705-...
- Page 37 TX-23LX50M / TX-23LX50A / TX-23LX50X Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description Q1012 UN2211 TRANSISTOR R1121 ERJ3GEYJ101 M 100 OHM,J,1/16W Q1101 2SC584500L TRANSISTOR R1122 ERJ3GEYJ333 M 33KOHM,J,1/16W Q1102 2SA207700L TRANSISTOR R1123...
- Page 38 TX-23LX50M / TX-23LX50A / TX-23LX50X Ref. Part No. Part Name & Remarks Ref. Part No. Part Name & Remarks Description Description R1253 ERJ3GEYJ103 M 10KOHM,J,1/16W R1772 ERJ3GEYJ331 M 330 OHM,J,1/16W R1255 ERJ3GEYJ122 M 1.2KOHM,J,1/16W R1774 ERJ3GEYJ331 M 330 OHM,J,1/16W R1256,5 ERJ3GEYJ472 M 4.7KOHM,J,1/16W...