Panasonic TX-37LX80Y Service Manual

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Specifications

Power Source :

Power Consumption

Average Use

Standby condition

Display panel

Aspect Ratio

Visible screen size

(No. of pixels)

Sound

Speaker

Audio Output

Headphones

PC signals

Receiving System / Band name

TX-37LX80Y

LH80 Chassis

AC SINGLE 220 V, 50 Hz

158 W

1 W

16:9

819.6 mm (W) × 460.8 mm (H)

1,049,088 (1,366 (W) × 768 (H))

Full range × 2 pcs, 8 Ω

20 W (10 W + 10 W), 10% THD

M3 (3.5 mm) Jack × 1

VGA, SVGA, XGA, WVGA, WXGA

Vertical scanning frequency 60 Hz

SYSTEMS

———————————————————————————————————————

PAL B, G, H

PAL I

PAL D, K

SECAM B, G

SECAM D, K

SECAM K1

NTSC M (NTSC 3.58 / 4.5 MHz)

———————————————————————————————————————

NTSC 4.43 / 5.5 MHz

NTSC 4.43 / 6.0 MHz

ORDER NO. MTV0801602CE

FUNCTIONS

Reception

of broadcast

transmission and

playback from

video cassette tape

recorders.

Playback from

special VCR's or DVD.

rights

reserved.

Unauthorized

distribution is a violation of law.

LCD TV

copying

and

Table of Contents

Summary of Contents for Panasonic TX-37LX80Y

Page 1 ORDER NO. MTV0801602CE LCD TV TX-37LX80Y LH80 Chassis Specifications Power Source : AC SINGLE 220 V, 50 Hz Power Consumption Average Use 158 W Standby condition Display panel Aspect Ratio 16:9 Visible screen size 819.6 mm (W) × 460.8 mm (H) (No.
Page 2: Table Of Contents
TX-37LX80Y 10 NTSC 4.43 / 6.5 MHz 11 NTSC 3.58 / 5.5 MHz Playback from special VCR’s or DVD. 12 NTSC 3.58 / 6.0 MHz 13 NTSC 3.58 / 6.5 MHz 14 SECAM I ——————————————————————————————————————— 15 PAL 60 Hz / 5.5 MHz...
Page 3 TX-37LX80Y 7.2. AC Code dressing for 3-Pin 10.1. A-Board 7.3. Chassis Rail Installation 10.2. A-Board 7.4. VESA Bracket Installation 11 Schematic Diagram 7.5. Pedestal Assembly Preparation 11.1. Schematic Diagram Notes 7.6. LED Panel Installation 11.2. A Board 7.7. LCD Panel Assembly Installation 11.3.
Page 4: Safety Precautions
TX-37LX80Y 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: Prevention Of Electro Static Discharge (Esd) To
TX-37LX80Y 2 Prevention of Electro Static 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"...
Page 6: About Lead Free Solder (Pbf)
TX-37LX80Y 3 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 (PbF) used in our manufacturing process and discussed below is (Sn+Ag+Cu).
Page 7: Self Check Function
TX-37LX80Y 4 Self Check Function 4.1. Self Check 1. Self Check is used to automatically check the bus lines and hexadecimal codes of the TV set. 2. To get into the Self Check mode, press the “DOWN” button on the customer’s controls at the front of the set, at the same time pressing the “MENU”...
Page 8 TX-37LX80Y...
Page 9: Chassis Board
TX-37LX80Y 5 Chassis Board 5.1. Chassis Installation 1. Fix 12 screws to ‘A-board’ and ‘P-board’. Tightening torque should be 50 Ncm to 80 Ncm (5 kgf cm to 8 kgf cm). 2. Fix connectors G1, G2 and G3 to AT G-board.
Page 10: Location Of Lead Wiring
TX-37LX80Y 6 Location of Lead Wiring 6.1. Wire Dressing = FELT-TMK4G215 = 7 pcs 6.2. Wire Dressing and Connections CONNECTION CN 2 ~ P 2 A 2 ~ P 4 A 1 ~ P 3 CN 2 ~ A 6...
Page 11: Disassembly For Service
TX-37LX80Y 7 Disassembly for Service 7.1. AC Code dressing for 2-Pin 7.2. AC Code dressing for 3-Pin...
Page 12: Chassis Rail Installation
TX-37LX80Y 7.3. Chassis Rail Installation 1. Put on the bottom mounting and fix with 4 screws. Tightening torque should be 100 N cm - 130 N cm (10 kgf cm to 13 kgf cm). 2. Stick sponges at chassis rails no.1 and no.3.
Page 13: Vesa Bracket Installation
TX-37LX80Y 7.4. VESA Bracket Installation 1. Stick 2 pieces of felt on each part of the VESA bracket. 2. Fix 4 screws to VESA bracket. Tightening torque should be 100 Ncm to 130 Ncm (10 kgf cm to 13 kgf cm).
Page 14: Pedestal Assembly Preparation
TX-37LX80Y 7.5. Pedestal Assembly Preparation 7.5.1. Pedestal Rotation Base...
Page 15 TX-37LX80Y 7.5.2. Pedestal Stand Base 7.5.3. Pedestal Stand Cover...
Page 16: Led Panel Installation
TX-37LX80Y 7.6. LED Panel Installation 1. Put PCB to LED panel and ensure hook is properly locked on the PCB. 2. Fix LED panel to cabinet with 3 screws. Tightening torgue should be 0.5 N m ~ 0.8 N m (5 to 8 kgf cm).
Page 17: Lcd Panel Assembly Installation
TX-37LX80Y 7.7. LCD Panel Assembly Installation 1. Put LCD panel to cabinet assembly. 2. Put LCD top mounting, LCD bottom mounting and LCD side mounting to cabinet assembly. 3. Fix screw into LCD top mounting, LCD side mounting and LCD bottom mounting.
Page 18: Service Mode Adjustment
TX-37LX80Y 8 Service Mode Adjustment Set channel 99, then set the timer to 30 min. Press the “RECALL” button on the remote control and the “-” button on the LCD panel. 8.1. SERVICE 1 1. Press the red button (on the remote control) for adjustment below.
Page 19 TX-37LX80Y...
Page 20: Adjustment
TX-37LX80Y 9 Adjustment 9.1. Voltage Chart of A Board Power Name Test point Specification STANDBY MAIN_5 V TP1823 5.0 ± 0.25 V PANEL_12 V TP1815 12.0 ± 0.50 V BT_30 V TP1820 30.0 V ± 2.0 V 24 V TP1818 24.0 ±...
Page 21: Conductor Views
TX-37LX80Y 10 Conductor Views 10.1. A-Board A-Board (A Side) TNP4G431 Parts Location A-Board A-Board A-Board A-Board IC4006 IC5004 IC4001 IC2005 IC1804 IC5005 IC4005 IC2001 IC1805 IC1102 IC1803 IC5003 IC4004 IC3860...
Page 22 TX-37LX80Y 10.2. A-Board A-Board (B Side) TNP4G431 Parts Location A-Board IC5002 IC5001 IC4003...
Page 23 TX-37LX80Y 11 Schematic Diagram 11.1. Schematic Diagram Notes Notes : 1. Resistor Unit of resistance is OHM [Ω] (K = 1 000, M = 1 000 000). 2. Capacitor Unit of capacitance is µF unless otherwise noted. 3. Coil Unit of inductance is µF unless otherwise noted.
Page 24 TX-37LX80Y 11.2. A Board 11.2.1. A Board (1 / 10) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A> <9A>...
Page 25 TX-37LX80Y 11.2.2. A Board (2 / 10) <1A> <2A> <1B> <2B> <3B> <3A> <4A> <5A> <6A> <4B> <7A> <5B> <6B> <8A> <7B> <8B> <9A>...
Page 26 TX-37LX80Y 11.2.3. A Board (3 / 10) <1C> <1B> <2B> <2C> <3B> <3C> <4B> <4C> <5C> <5B> <6C> <6B> <7B> <8B> <7C>...
Page 27 TX-37LX80Y 11.2.4. A Board (4 / 10) <1C> <1D> <2D> <3D> <2C> <3C> <4D> <4C> <5C> <5D> <6C> <6D> <7C> <7D>...
Page 28 TX-37LX80Y 11.2.5. A Board (5 / 10) <1D> <1E> <2D> <2E> <3D> <3E> <4E> <5E> <4D> <6E> <5D> <6D> <7E> <7D> <8E>...
Page 29 TX-37LX80Y 11.2.6. A Board (6 / 10) <1E> <1F> <2F> <2E> <3E> <3F> <4E> <5E> <4F> <6E> <5F> <6F> <7E> <7F> <8E> <8F>...
Page 30 TX-37LX80Y 11.2.7. A Board (7 / 10) <1F> <2F> <1G> <2G> <3F> <3G> <4F> <5F> <6F> <4G> <7F> <5G> <8F> <6G>...
Page 31 TX-37LX80Y 11.2.8. A Board (8 / 10) <1H> <1G> <2H> <3H> <2G> <3G> <4H> <5H> <4G> <6H> <5G> <7H> <6G>...
Page 32 TX-37LX80Y 11.2.9. A Board (9 / 10) <1H> <1I> <2I> <2H> <3H> <3I> <4I> <5I> <4H> <6I> <5H> <7I> <6H> <8I> <7H> <9I>...
Page 33 TX-37LX80Y 11.2.10. A Board (10 / 10) <1I> <2I> <3I> <4I> <5I> <6I> <7I> <8I> <9I>...
Page 34 TX-37LX80Y 11.3. K Board 11.3.1. K Board (1 / 1)
Page 35 TX-37LX80Y 11.4. P Board 11.4.1. P Board (1 / 4) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A>...
Page 36 TX-37LX80Y 11.4.2. P Board (2 / 4) <1A> <1B> <2A> <3A> <4A> <2B> <3B> <4B> <5A> <5B> <6A> <6B> <7A> <7B> <8A> <8B>...
Page 37 TX-37LX80Y 11.4.3. P Board (3 / 4) <1B> <1C> <2C> <3C> <2B> <4C> <5C> <3B> <4B> <5B> <6B> <7B> <6C> <7C> <8C> <8B>...
Page 38 TX-37LX80Y 11.4.4. P Board (4 / 4) <1C> <2C> <3C> <4C> <5C> <6C> <7C> <8C>...
Page 39 TX-37LX80Y 11.5. G Board 11.5.1. G Board (1 / 2) <1A> <2A> <3A> <4A> <5A>...
Page 40 TX-37LX80Y 11.5.2. G Board (2 / 2) <1A> <2A> <3A> <4A> <5A>...
Page 41 TX-37LX80Y 11.6. V Board 11.6.1. V Board (1 / 3) <1A> <2A> <3A> <4A>...
Page 42 TX-37LX80Y 11.6.2. V Board (2 / 3) <1A> <1B> <2B> <2A> <3B> <4B> <3A> <4A> <5B>...
Page 43 TX-37LX80Y 11.6.3. V Board (3 / 3) <1B> <2B> <3B> <4B> <5B>...
Page 44 TX-37LX80Y 11.7. SW Board 11.7.1. SW Board (1 / 2) <1A> <2A> <3A>...
Page 45 TX-37LX80Y 11.7.2. SW Board (2 / 2) <1A> <2A> <3A>...
Page 46 TX-37LX80Y 12 Parts Location & Mechanical Replacement Parts List 12.1. Parts Location...
Page 47 TX-37LX80Y 13 Packing Exploded View...
Page 48 TX-37LX80Y 14 Replacement Parts List...
Page 49 TX-37LX80Y 14.1. Electrical Replacement Parts List Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks EAS16S07B SPEAKER C1870 ECJ1VB1C104K C 0.1UF, K, 16V J0KF00000018 FERRITE CORE C1951 ECJ1VB1H104K C 0.1UF, K, 16V J0KG00000114...
Page 50 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C4019 F1J0J1060004 C 10UF, 6.3V C4101 F1G1A1040006 C 0.1UF, 10V C4020 F1J0J1060004 C 10UF, 6.3V C4102 F1J0J1060004 C 10UF, 6.3V C4021 F1J0J1060004 C 10UF, 6.3V...
Page 51 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C5038 F1G1A1040006 C 0.1UF, 10V C872 ECJ1VC1H101J C 100PF, J, 50V C5040 F1G1A1040006 C 0.1UF, 10V C875 F2A1V101A246 E 100UF, 35V C5041 F1G1A1040006 C 0.1UF, 10V...
Page 52 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D3028 MAZ81400ML DIODE D819 B0JBSL000026 DIODE D3031 MAZ81400ML DIODE D823 B0HAJL000003 DIODE D3032 MAZ81400ML DIODE D824 B0JCME000037 DIODE D3033 MAZ81400ML DIODE D832 B0JCME000037...
Page 53 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L4008 J0JHC0000078 BEAD CORE Q3807 2SC584500L TRANSISTOR L4009 J0JHC0000078 BEAD CORE Q4001 2SC584500L TRANSISTOR L4010 J0JHC0000078 BEAD CORE Q4002 2SA207700L TRANSISTOR L4011 J0JHC0000078...
Page 54 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R1237 ERJ3GEYJ103 M 10KOHM,J,1/16W R2502 ERJ3EKF1202 M 12KOHM,F,1/16W R1238 ERJ3GEYJ103 M 10KOHM,J,1/16W R2503 ERJ3EKF2202 M 22KOHM,F,1/16W R1239 ERJ3GEYJ103 M 10KOHM,J,1/16W R2504 ERJ3EKF6802 M 68KOHM,F,1/16W...
Page 55 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R3502 ERJ6ENF75R0 M 75OHM, 1/10W R4072 ERJ3GEYJ101 M 100OHM,J,1/16W R3503 ERJ6GEY0R00 M 0OHM,J,1/10W R4077 ERJ3GEYJ220 M 22OHM,J,1/16W R3504 ERJ6GEY0R00 M 0OHM,J,1/10W R4078 ERJ3GEYJ102...
Page 56 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R4201 ERJ3GEYJ103 M 10KOHM,J,1/16W R4504 ERJ3GEYJ103 M 10KOHM,J,1/16W R4202 ERJ3EKF1000 F 100OHM,J,1/10W R4505 ERJ3GEYJ103 M 10KOHM,J,1/16W R4203 ERJ3GEYJ102 M 1KOHM,J,1/16W R4506 ERJ3GEYJ473 M 47KOHM,J,1/16W...
Page 57 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R5077 ERJ3GEYJ182 M 1.8KOHM,J,1/16W R832 ERJ6GEYJ564 M 560KOHM,J,1/10W R5078 ERJ3GEYJ220 M 22OHM,J,1/16W R833 ERJ6GEYJ564 M 560KOHM,J,1/10W R5080 ERJ3GEYJ220 M 22OHM,J,1/16W R834 ERJ6GEYJ105 M 1MOHM,J,1/10W...
Page 58 TX-37LX80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R920 ERJ6GEYJ103 M 10KOHM,J,1/10W JSP825 ERJ6GEY0R00 M 0OHM,J,1/10W R922 ERX1SJ2R2E M 2.2OHM,J, 1W K1KA02BA0055 CONNECTOR R923 ERJ6GEYJ753 M 75KOHM,J,1/10W LF801 G0B153H00003 CHOKE COIL...

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