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Panasonic TX-37LZ80Y Service Manual
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Panasonic TX-37LZ80Y 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 Systems / Band name
TX-37LZ80Y
LH81 Chassis
AC SINGLE 220 - 240 V, 50/60 Hz
184 W
1.0 W
16:9
819.6 mm (W) × 460.8 mm (H)
2,073,600 (1,920 (W) × 1,080 (H))
Full range × 2 pcs, 8 Ω
20 W (10 W + 10 W), 10% THD
M3 (3.5 mm) Jack × 1
VGA, SVGA, XGA, SXGA, WXGA
Horizontal scanning frequency 31 - 69 Hz
Vertical scanning frequency 59 - 86 Hz
SYSTEMS
———————————————————————————————————————
1
PAL B, G, H
2
PAL I
3
PAL D, K
4
SECAM B, G
5
SECAM D, K
6
SECAM K1
7
NTSC M (NTSC 3.58 / 4.5 MHz)
———————————————————————————————————————
8
NTSC 4.43 / 5.5 MHz
9
NTSC 4.43 / 6.0 MHz
ORDER NO. MTV0801655CE
FUNCTIONS
Reception
of broadcast
transmission and
playback from
video cassette tape
recorders.
Playback from
special VCR's or DVD.
©
Panasonic
Corporation
copying and distribution is a violation of law.
LCD TV
2008.
Unauthorized

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Summary of Contents for Panasonic TX-37LZ80Y

  • Page 1 ORDER NO. MTV0801655CE LCD TV TX-37LZ80Y LH81 Chassis Specifications Power Source : AC SINGLE 220 - 240 V, 50/60 Hz Power Consumption Average Use 184 W Standby condition 1.0 W Display panel Aspect Ratio 16:9 Visible screen size 819.6 mm (W) × 460.8 mm (H) (No.

  • Page 2: Table Of Contents

    TX-37LZ80Y 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-37LZ80Y 7.2. AC Code dressing for K2CT2YY00009 (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-37LZ80Y 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-37LZ80Y 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-37LZ80Y 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-37LZ80Y 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-37LZ80Y...

  • Page 9: Chassis Board

    TX-37LZ80Y 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-37LZ80Y 6 Location of Lead Wiring 6.1. Wire Dressing 6.2. Wire Dressing and Connections CONNECTION CN 2 ~ P 2 CN 2 ~ A 16 A 11 ~ P 3 A 12 ~ P 4 A 7 ~ G 4...

  • Page 11: Disassembly For Service

    TX-37LZ80Y 7 Disassembly for Service 7.1. AC Code dressing for K2CQ2YY00009 (2 Pin) 7.2. AC Code dressing for K2CT2YY00009 (3 Pin)

  • Page 12: Chassis Rail Installation

    TX-37LZ80Y 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-37LZ80Y 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-37LZ80Y 7.5. Pedestal Assembly Preparation 7.5.1. Pedestal Rotation Base...
  • Page 15 TX-37LZ80Y 7.5.2. Pedestal Stand Base 7.5.3. Pedestal Stand Cover...

  • Page 16: Led Panel Installation

    TX-37LZ80Y 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-37LZ80Y 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: Back Cover

    TX-37LZ80Y 7.8. Back Cover 1. Stick felts to back cover. 2. Stick rear AV indication and HDMI sheet at cabinet.

  • Page 19: Service Mode Adjustment

    TX-37LZ80Y 8 Service Mode Adjustment Set timer to 30min, press the “RECALL” button on the remote control and press “-” vol button on the LCD panel. 8.1. SERVICE 1 1. Press button cursor up and down for adjustment below. • Tests •...
  • Page 20 TX-37LZ80Y...

  • Page 21: Adjustment

    TX-37LZ80Y 9 Adjustment 9.1. Voltage Chart of A Board Power Name Test point Specification NORMAL STANDBY MAIN_5 V TP1823 5.0 ± 0.25 V PANEL_12 V TP3824 12.0 ± 0.25 V BT_30 V TP1820 30.0 V ± 2.0 V 24 V TP1818 24.0 ±...

  • Page 22: Conductor Views

    TX-37LZ80Y 10 Conductor Views 10.1. A-Board A-Board (A Side) TNP4G439...
  • Page 23 TX-37LZ80Y 10.2. A-Board A-Board (B Side) TNP4G439...

  • Page 24: Schematic Diagram

    TX-37LZ80Y 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 25: A Board

    TX-37LZ80Y 11.2. A Board 11.2.1. A Board (1 / 11) <1A> <2A> <3A> <4A>...
  • Page 26 TX-37LZ80Y 11.2.2. A Board (2 / 11) <1A> <1B> <2A> <2B> <3A> <3B> <4A> <4B>...
  • Page 27 TX-37LZ80Y 11.2.3. A Board (3 / 11) <1B> <1C> <2B> <2C> <3B> <3C> <4B> <4C>...
  • Page 28 TX-37LZ80Y 11.2.4. A Board (4 / 11) <1D> <1C> <2D> <3D> <4D> <5D> <2C> <6D> <3C> <7D> <4C> <8D>...
  • Page 29 TX-37LZ80Y 11.2.5. A Board (5 / 11) <1D> <1E> <2D> <2E> <3E> <3D> <4D> <5D> <6D> <4E> <7D> <8D>...
  • Page 30 TX-37LZ80Y 11.2.6. A Board (6 / 11) <1E> <1F> <2E> <2F> <3E> <3F> <4E> <4F>...
  • Page 31 TX-37LZ80Y 11.2.7. A Board (7 / 11) <1G> <1F> <2G> <2F> <3F> <3G> <4G> <4F> <5G>...
  • Page 32 TX-37LZ80Y 11.2.8. A Board (8 / 11) <1G> <1H> <2G> <2H> <3G> <3H> <4H> <5H> <4G> <6H> <5G> <7H>...
  • Page 33 TX-37LZ80Y 11.2.9. A Board (9 / 11) <1H> <1I> <2I> <2H> <3I> <3H> <4I> <4H> <5I> <6I> <5H> <7I> <8I> <6H> <7H> <9I>...
  • Page 34 TX-37LZ80Y 11.2.10. A Board (10 / 11) <1I> <1J> <2I> <2J> <3I> <3J> <4I> <4J> <5I> <5J> <6I> <6J> <7I> <7J> <8I> <8J> <9I> <9J>...
  • Page 35 TX-37LZ80Y 11.2.11. A Board (11 / 11) <1J> <2J> <3J> <4J> <5J> <6J> <7J> <8J> <9J>...

  • Page 36: G Board

    TX-37LZ80Y 11.3. G Board 11.3.1. G Board (1 / 2) <1A> <2A> <3A> <4A> <5A>...
  • Page 37 TX-37LZ80Y 11.3.2. G Board (2 / 2) <1A> <2A> <3A> <4A> <5A>...

  • Page 38: K2 Board

    TX-37LZ80Y 11.4. K2 Board 11.4.1. K2 Board (1 / 1)

  • Page 39: P Board

    TX-37LZ80Y 11.5. P Board 11.5.1. P Board (1 / 4) <1A> <2A> <3A> <4A> <5A>...
  • Page 40 TX-37LZ80Y 11.5.2. P Board (2 / 4) <1A> <1B> <2A> <2B> <3B> <3A> <4A> <4B> <5A>...
  • Page 41 TX-37LZ80Y 11.5.3. P Board (3 / 4) <1B> <1C> <2C> <3C> <4C> <2B> <5C> <3B> <6C> <7C> <8C> <4B>...
  • Page 42 TX-37LZ80Y 11.5.4. P Board (4 / 4) <1C> <2C> <3C> <4C> <5C> <6C> <7C> <8C>...

  • Page 43: Sw Board

    TX-37LZ80Y 11.6. SW Board 11.6.1. SW Board (1 / 1)

  • Page 44: Board

    TX-37LZ80Y 11.7. V Board 11.7.1. V Board (1 / 3) <1A> <2A> <3A> <4A>...
  • Page 45 TX-37LZ80Y 11.7.2. V Board (2 / 3) <1B> <1A> <2B> <2A> <3B> <3A> <4B> <4A> <5B>...
  • Page 46 TX-37LZ80Y 11.7.3. V Board (3 / 3) <1B> <2B> <3B> <4B> <5B>...

  • Page 47: Parts Location & Mechanical Replacement Parts List

    TX-37LZ80Y 12 Parts Location & Mechanical Replacement Parts List 12.1. Parts Location...

  • Page 48: Packing Exploded View

    TX-37LZ80Y 13 Packing Exploded View...

  • Page 49: Replacement Parts List

    TX-37LZ80Y 14 Replacement Parts List...

  • Page 50: Electrical Replacement Parts List

    TX-37LZ80Y 14.1. Electrical Replacement Parts List Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks EAS16S07B SPEAKER C1882 ECJ1VB1H103K C 0.01UF, K, 50V J0KF00000018 FERRITE CORE C1883 ECJ1VB1H472K C 4700PF, K, 50V J0KG00000139...
  • Page 51 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C2356 F1H1A1050032 C 1UF, 10V C4079 F1J0J1060004 C 10UF, 6.3V C2357 F1H1H102A219 C 1000UF, 50V C4080 F1J0J1060004 C 10UF, 6.3V C2358 F1H1H102A219 C 1000UF, 50V...
  • Page 52 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C4456 ECJ1VB1C104K C 0.1UF, K, 16V C853 ECJ1VB1H104K C 0.1UF,K, 50V C4457 EEEHB1C100R E 10UF, 16V C854 ECJ1VB1H333K C 0.033UF,K, 50V C4458 ECJ1VB1H102K...
  • Page 53 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks D3022 MAZ81400ML DIODE D856 B0JCME000037 DIODE D3023 MAZ81400ML DIODE D860 B0JANE000006 DIODE D3024 MAZ81400ML DIODE D862 B0JCPG000005 DIODE D3025 MAZ81400ML DIODE D863 B0JCME000037...
  • Page 54 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L2011 J0JHC0000034 BEAD CORE Q2033 B1MBACA00008 TRANSISTOR L2100 ELJFC2R2KFB CHIP INDUCTOR Q2301 2SC584500L TRANSISTOR L2101 ELJFC2R2KFB CHIP INDUCTOR Q2302 2SC584500L TRANSISTOR L2102 ELJFC2R2KFB...
  • Page 55 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R1029 ERJ3GEYJ102 M 1KOHM,J,1/16W R2002 ERJ3EKF2202 M 22KOHM,F,1/16W R1167 ERJ3GEYJ101 M 100OHM,J,1/16W R2003 ERJ3EKF2202 M 22KOHM,F,1/16W R1171 ERJ3GEYJ220 M 22OHM,J,1/16W R2004 ERJ3EKF2202 M 22KOHM,F,1/16W...
  • Page 56 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R3039 ERJ3GEYJ105 M 1MOHM,J,1/16W R3512 ERJ3GEYJ102 M 1KOHM,J,1/16W R3040 ERJ3GEYJ274 M 270KOHM,J,1/16W R3513 D0GD184JA017 F 180KOHM,J,1/10W R3041 ERJ3GEYJ473 M 47KOHM,J,1/16W R3514 D0GD184JA017 F 180KOHM,J,1/10W...
  • Page 57 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R4072 ERJ3GEYJ105 M 1MOHM,J,1/16W R4359 ERJ2GEJ470X M47OHM,J,1/10W R4073 ERJ3GEYJ105 M 1MOHM,J,1/16W R4360 ERJ2GEJ470X M47OHM,J,1/10W R4074 ERJ3GEYJ103 M 10KOHM,J,1/16W R4361 ERJ2GEJ470X M47OHM,J,1/10W R4075 ERJ3GEYJ562 M 5.6KOHM,J,1/16W...
  • Page 58 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R4445 ERJ2GEJ750X F 75OHM,J,1/10W R810 ERDS2TJ121 C 120OHM,J, 1/4W R4446 ERJ2GEJ750X F 75OHM,J,1/10W R812 ERJ6GEYJ473 M 47KOHM,J,1/10W R4447 ERJ2GEJ750X F 75OHM,J,1/10W R814 ERJ6GEYJ624...
  • Page 59 TX-37LZ80Y Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R889 ERJ3EKF1002 M 10KOHM,F,1/16W JSA1854 ERJ6GEY0R00 M 0OHM,J,1/10W R890 ERJ6GEYJ103 M 10KOHM,J,1/10W JSA1855 ERJ6GEY0R00 M 0OHM,J,1/10W R891 ERJ6GEYJ102 M 1KOHM,J,1/10W JSA1920 ERJ3GEY0R00 M 0OHM,J,1/16W...

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