Panasonic TX-26LE8A Service Manual
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Panasonic TX-26LE8A Service Manual

Lh80 chassis
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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
All manuals and user guides at all-guides.com
AC SINGLE 230 V, 50 Hz
102 W
1.0 W
16:9
576 mm (W) × 324 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
———————————————————————————————————————
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
TX-26LE8A
LH80 Chassis
FUNCTIONS
Reception
of broadcast
transmission and
playback from
video cassette tape
recorders.
Playback from
special VCR's or DVD.
©
Panasonic
copying and distribution is a violation of law.
ORDER NO. MTV0801657CE
LCD TV
Corporation
2008.
Unauthorized

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  • Page 1 All manuals and user guides at all-guides.com ORDER NO. MTV0801657CE LCD TV TX-26LE8A LH80 Chassis Specifications Power Source : AC SINGLE 230 V, 50 Hz Power Consumption Average Use 102 W Standby condition 1.0 W Display panel Aspect Ratio 16:9 Visible screen size 576 mm (W) ×...

  • Page 2: Table Of Contents

    TX-26LE8A All manuals and user guides at all-guides.com 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 ———————————————————————————————————————...
  • Page 3 TX-26LE8A All manuals and user guides at all-guides.com 7.1. AC Code dressing for 2-Pin 10 Conductor Views 7.2. AC Code dressing for 3-Pin 10.1. A-Board 7.3. Chassis Rail Installation 10.2. A-Board 7.4. VESA and Pedesdal Bracket Installation 11 Schematic Diagram 7.5.

  • Page 4: Safety Precautions

    TX-26LE8A All manuals and user guides at all-guides.com 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.

  • Page 5: Prevention Of Electro Static Discharge (Esd) To

    TX-26LE8A All manuals and user guides at all-guides.com 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-26LE8A All manuals and user guides at all-guides.com 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.

  • Page 7: Self Check Function

    TX-26LE8A All manuals and user guides at all-guides.com 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: Led And Remote Controller Receiver Check

    TX-26LE8A All manuals and user guides at all-guides.com 4.3. LED and Remote Controller Receiver Check 1. Turn on the set using the power switch. Check that the LED on the front panel is as shown below. Green lamp lit = Receiving 2.

  • Page 9: Chassis Installation

    TX-26LE8A All manuals and user guides at all-guides.com 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-26LE8A All manuals and user guides at all-guides.com 6 Location of Lead Wiring 6.1. Wire Dressing...

  • Page 11: Wire Dressing And Connections

    TX-26LE8A All manuals and user guides at all-guides.com 6.2. Wire Dressing and Connections CONNECTION INV - P 2 A 2 ~ P 4 A 1 ~ P 3 G 3 ~ K 1 G 1 ~ A 4 G 2 ~ A 5...

  • Page 12: Disassembly For Service

    TX-26LE8A All manuals and user guides at all-guides.com 7 Disassembly for Service 7.1. AC Code dressing for 2-Pin 7.2. AC Code dressing for 3-Pin...

  • Page 13: Chassis Rail Installation

    TX-26LE8A All manuals and user guides at all-guides.com 7.3. Chassis Rail Installation 1. Put pedestal mounting and fix with 4 pcs screw. 2. Fix 3 pcs chassis frame and fix 6 pcs screw to bottom and top mounting.

  • Page 14: Vesa And Pedesdal Bracket Installation

    TX-26LE8A All manuals and user guides at all-guides.com 7.4. VESA and Pedesdal 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 15: Pedestal Assembly Preparation

    TX-26LE8A All manuals and user guides at all-guides.com 7.5. Pedestal Assembly Preparation 7.5.1. Pedestal Rotation Base...
  • Page 16 TX-26LE8A All manuals and user guides at all-guides.com 7.5.2. Pedestal Stand Base 7.5.3. Pedestal Stand Cover...

  • Page 17: Led Panel Installation

    TX-26LE8A All manuals and user guides at all-guides.com 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 18: Lcd Panel Assembly Installation

    TX-26LE8A All manuals and user guides at all-guides.com 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 19: Back Cover And Model Name Plate Installation

    TX-26LE8A All manuals and user guides at all-guides.com 7.8. Back Cover and Model Name Plate Installation 1. Stick model name plate at back cover with serial no.

  • Page 20: Service Mode Adjustment

    TX-26LE8A All manuals and user guides at all-guides.com 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.
  • Page 21 TX-26LE8A All manuals and user guides at all-guides.com...
  • Page 22 TX-26LE8A All manuals and user guides at all-guides.com...

  • Page 23: Adjustment

    TX-26LE8A All manuals and user guides at all-guides.com 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 ± 0.5 V BT_30 V TP1820 30.0 V ± 2.0 V...

  • Page 24: Conductor Views

    TX-26LE8A All manuals and user guides at all-guides.com 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 25: A-Board

    TX-26LE8A All manuals and user guides at all-guides.com 10.2. A-Board A-Board (B Side) TNP4G431 Parts Location A-Board IC5002 IC5001 IC4003...

  • Page 26: Schematic Diagram

    TX-26LE8A All manuals and user guides at all-guides.com 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.

  • Page 27: A Board

    TX-26LE8A All manuals and user guides at all-guides.com 11.2. A Board 11.2.1. A Board (1 / 10) <1A> <2A> <3A> <4A> <5A> <6A> <7A> <8A> <9A>...
  • Page 28 TX-26LE8A All manuals and user guides at all-guides.com 11.2.2. A Board (2 / 10) <1A> <2A> <3A> <1B> <2B> <3B> <4A> <5A> <4B> <6A> <5B> <7A> <6B> <7B> <8B> <8A> <9B> <9A>...
  • Page 29 TX-26LE8A All manuals and user guides at all-guides.com 11.2.3. A Board (3 / 10) <1C> <1B> <2B> <3B> <4B> <5B> <6B> <2C> <7B> <3C> <4C> <8B> <5C> <9B>...
  • Page 30 TX-26LE8A All manuals and user guides at all-guides.com 11.2.4. A Board (4 / 10) <1C> <1D> <2D> <3D> <4D> <5D> <6D> <2C> <3C> <7D> <4C> <8D> <5C> <9D>...
  • Page 31 TX-26LE8A All manuals and user guides at all-guides.com 11.2.5. A Board (5 / 10) <1D> <1E> <2D> <2E> <3E> <4E> <3D> <5E> <4D> <5D> <6E> <6D> <7E> <7D> <8D> <8E> <9D> <9E>...
  • Page 32 TX-26LE8A All manuals and user guides at all-guides.com 11.2.6. A Board (6 / 10) <1E> <1F> <2E> <2F> <3E> <3F> <4F> <4E> <5E> <6E> <7E> <5F> <8E> <6F> <9E>...
  • Page 33 TX-26LE8A All manuals and user guides at all-guides.com 11.2.7. A Board (7 / 10) <1F> <1G> <2F> <2G> <3F> <4F> <3G> <5F> <4G> <5G> <6F>...
  • Page 34 TX-26LE8A All manuals and user guides at all-guides.com 11.2.8. A Board (8 / 10) <1H> <1G> <2H> <3H> <2G> <3G> <4H> <5H> <6H> <4G> <7H> <5G> <8H>...
  • Page 35 TX-26LE8A All manuals and user guides at all-guides.com 11.2.9. A Board (9 / 10) <1H> <1I> <2H> <3H> <2I> <3I> <4I> <4H> <5I> <5H> <6I> <7I> <6H> <7H> <8I> <8H> <9I>...
  • Page 36 TX-26LE8A All manuals and user guides at all-guides.com 11.2.10. A Board (10 / 10) <1I> <2I> <3I> <4I> <5I> <6I> <7I> <8I> <9I>...

  • Page 37: G Board

    TX-26LE8A All manuals and user guides at all-guides.com 11.3. G Board 11.3.1. G Board (1 / 2) <1A> <2A> <3A> <4A>...
  • Page 38 TX-26LE8A All manuals and user guides at all-guides.com 11.3.2. G Board (2 / 2) <1A> <2A> <3A> <4A>...

  • Page 39: K Board

    TX-26LE8A All manuals and user guides at all-guides.com 11.4. K Board 11.4.1. K Board (1 / 1)

  • Page 40: P Board

    TX-26LE8A All manuals and user guides at all-guides.com 11.5. P Board 11.5.1. P Board (1 / 4) <1A> <2A> <3A> <4A> <5A> <6A> <7A>...
  • Page 41 TX-26LE8A All manuals and user guides at all-guides.com 11.5.2. P Board (2 / 4) <1A> <1B> <2B> <2A> <3A> <3B> <4B> <5B> <4A> <6B> <5A> <6A> <7B> <7A> <8B>...
  • Page 42 TX-26LE8A All manuals and user guides at all-guides.com 11.5.3. P Board (3 / 4) <1B> <1C> <2B> <2C> <3B> <3C> <4C> <4B> <5B> <6B> <7B> <5C> <6C> <8B>...
  • Page 43 TX-26LE8A All manuals and user guides at all-guides.com 11.5.4. P Board (4 / 4) <1C> <2C> <3C> <4C> <5C> <6C>...

  • Page 44: Sw Board

    TX-26LE8A All manuals and user guides at all-guides.com 11.6. SW Board 11.6.1. SW Board (1 / 1)

  • Page 45: Board

    TX-26LE8A All manuals and user guides at all-guides.com 11.7. V Board 11.7.1. V Board (1 / 4) <1A> <2A> <3A>...
  • Page 46 TX-26LE8A All manuals and user guides at all-guides.com 11.7.2. V Board (2 / 4) <1A> <1B> <2B> <3B> <2A> <4B> <3A> <5B>...
  • Page 47 TX-26LE8A All manuals and user guides at all-guides.com 11.7.3. V Board (3 / 4) <1B> <1C> <2C> <3C> <2B> <3B> <4C> <4B> <5C> <5B> <6C>...
  • Page 48 TX-26LE8A All manuals and user guides at all-guides.com 11.7.4. V Board (4 / 4) <1C> <2C> <3C> <4C> <5C> <6C>...

  • Page 49: Parts Location & Mechanical Replacement Parts List

    TX-26LE8A All manuals and user guides at all-guides.com 12 Parts Location & Mechanical Replacement Parts List 12.1. Parts Location...

  • Page 50: Packing Exploded View

    TX-26LE8A All manuals and user guides at all-guides.com 13 Packing Exploded View...

  • Page 51: Replacement Parts List

    TX-26LE8A All manuals and user guides at all-guides.com 14 Replacement Parts List...

  • Page 52: Electrical Replacement Parts List

    TX-26LE8A All manuals and user guides at all-guides.com 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...
  • Page 53 TX-26LE8A All manuals and user guides at all-guides.com Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C4020 F1J0J1060004 C 10UF, 6.3V C4102 F1J0J1060004 C 10UF, 6.3V C4021 F1J0J1060004 C 10UF, 6.3V C4103...
  • Page 54 TX-26LE8A All manuals and user guides at all-guides.com Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks C5040 F1G1A1040006 C 0.1UF, 10V C872 ECJ1VC1H101J C 100PF, J, 50V C5041 F1G1A1040006 C 0.1UF, 10V...
  • Page 55 TX-26LE8A All manuals and user guides at all-guides.com 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...
  • Page 56 TX-26LE8A All manuals and user guides at all-guides.com Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks L4007 J0JHC0000078 BEAD CORE Q3807 2SC584500L TRANSISTOR L4008 J0JHC0000078 BEAD CORE Q4001 2SC584500L TRANSISTOR L4009 J0JHC0000078...
  • Page 57 TX-26LE8A All manuals and user guides at all-guides.com Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R1237 ERJ3GEYJ103 M 10KOHM,J,1/16W R2500 ERJ3GEY0R00 M 0OHM,J,1/16W R1238 ERJ3GEYJ103 M 10KOHM,J,1/16W R2501 ERJ3EKF6801 F 6.8KOHM,J,1/10W...
  • Page 58 TX-26LE8A All manuals and user guides at all-guides.com 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...
  • Page 59 TX-26LE8A All manuals and user guides at all-guides.com 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...
  • Page 60 TX-26LE8A All manuals and user guides at all-guides.com 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...
  • Page 61 TX-26LE8A All manuals and user guides at all-guides.com Ref. Part No. Part Name & Description Remarks Ref. Part No. Part Name & Description Remarks R920 ERJ6GEYJ103 M 10KOHM,J,1/10W LF803 G0B153H00003 CHOKE COIL R922 ERX1SJ2R2E M 2.2OHM,J, 1W K1KA02B00295 CONNECTOR R923...

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