Panasonic TX-L42DT50B Service Manual
Panasonic TX-L42DT50B Service Manual

Panasonic TX-L42DT50B Service Manual

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Service Manual
Service Manual
Specifications
Specifications
Information in brackets [ ] refers to model 47"
Information in brackets [ ] refers to model 47"
Power Source:
Power Source:   
Rated Power Consumption:
Rated Power Consumption:
Stand-by Power Consumption: 0.20W
Stand-by Power Consumption:
 Aer
 Aer ial
ial Imp
Receiving System: 
Receiving System:
 
 
220-240V AC,
220-240V
116W [129W]
116W [129W]
0.20W
Imp edan
edan ce:
ce:    
75
75
 unbalanced, Coaxial Type
 unbalanced, Coaxial Type
 
DT50
DT50B ( UK
DVB-T / / T2
DVB-T
DVB-S/S2
DVB-S/S2
PAL
PAL I I
PAL 525/60
PAL
M.NTSC
M.NTSC
NTSC
NTSC
AC, 50
50 / / 60Hz
60Hz
B ( UK ) )
T2
Digital terrestrial
Digital
terrestrial services
Freesat services
Freesat
services via
Receiver frequency range – 950 MHz to 2,150MHz
Receiver frequency range – 950 MHz to 2,150MHz
LNB Power and Polarisation – Vertical: +13V
LNB Power and Polarisation – Vertical: +13V
22 kHz Tone – Frequency: 22kHz ± 2kHz
22 kHz Tone – Frequency: 22kHz ± 2kHz
 Amplitude: 0.6V ± 0.2V
 Amplitude: 0.6V ± 0.2V
Symbol Rate – Max. 30MS/s
Symbol Rate – Max. 30MS/s
FEC Mode – 1/2, 3/5, 2/3, 3/4, 4/5, 5/6, 8/9, 9/10
FEC Mode – 1/2, 3/5,
Demodulation – QPSK, 8PSK
Demodulation – QPSK, 8PSK
   
Not available for 
Not available for 
UHF
UHF E21-E68
E21-E68
525/60
(AV only)
(AV
only)
(AV only)
(AV
only)
(AV only)
(AV
only)   
ORDER No. PCZ1203053CE
ORDER No. PCZ1203053CE
LCD Television
LCD Television
TX-L42DT50B
TX-L42DT50B
TX-L42DT50Y
TX-L42DT50Y
TX-LR42DT50
TX-LR42DT50
TX-L47DT50B
TX-L47DT50B
TX-L47DT50Y
TX-L47DT50Y
TX-LR47DT50
TX-LR47DT50
LA35
LA35 C
services
(MPEG2 and MPEG4-AVC(H.264))
(MPEG2 and MPEG4-AVC(H.264))
via Satellite
Satellite dish
dish input
input
Horizontal: +18V
Horizontal: +18V
Current: Max. 500mA (overload protection)
Current: Max. 500mA (overload protection)
2/3, 3/4, 4/5, 5/6, 8/9, 9/10
DiSEqC control
DiSEqC control   
© © Panasonic Corporation
Panasonic Corporation 2012.
Unauthorized copying
Unauthorized copying
distribution is a violation of law.
distribution is a violation of law.
 
 
Chassi
hassis
s
   
2012. 
 
   
and
and

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Summary of Contents for Panasonic TX-L42DT50B

  • Page 1 (AV only) only) M.NTSC M.NTSC (AV only) only) NTSC NTSC (AV only) only)    © © Panasonic Corporation Panasonic Corporation 2012. 2012.        Unauthorized copying Unauthorized copying distribution is a violation of law. distribution is a violation of law.
  • Page 2         DT50B ( Ireland ) DT50B ( Ireland ) DVB-T DVB-T Digital Digital terrestrial terrestrial services services     (MPEG2 and MPEG4-AVC(H.264)) (MPEG2 and MPEG4-AVC(H.264)) DVB-S/S2 DVB-S/S2 Receiver Receiver frequency frequency range range – – 950 950 MHz MHz to to 2,150MHz 2,150MHz LNB Power and Polarisation –...
  • Page 3                  Aeri  Aeri al - Rear al - Rear : : DT50B DT50B ( ( UK UK ) ) DT50 DT50B B ( ( Ireland Ireland ) ) / / DT50Y DT50Y / / LR_DT50 LR_DT50 VHF/UHF VHF/UHF...
  • Page 4         Dimensions: Dimensions:    Width: Width: Height: Height: Depth: Depth: Including Including TV TV stand stand 958mm 958mm 615mm 615mm 258mm 258mm [1,067mm [1,067mm 677mm 677mm 265mm] 265mm] TV set set only only 958mm 958mm 569mm 569mm 27mm 27mm [1,067mm...
  • Page 5     CONTENTS CONTENTS SAFETY SAFETY PRECAUTIONS PRECAUTIONS ..................6 6 GENERAL GENERAL GUIDE GUIDE LINES........LINES........6 6 TOUCH TOUCH – CUR – CURRENT CH RENT CHECK....... ECK....... 6 6 PREVENTION OF ELECTROSTATIC DISCHARGE PREVENTION OF ELECTROSTATIC DISCHARGE (ESD) TO (ESD) TO ELECTROSTA ELECTROSTATICALLY SENSITIVE (ES)
  • Page 6: Safety Precautions

        Safety Precautions Safety Precautions General Guide L neral Guide L ines ines 1. 1. When servicing, ob When servicing, observe the original lead serve the original lead dress. If a s dress. If a short circuit hort circuit is found, replace is found, replace all parts which all parts which have been overheated have been overheated...
  • Page 7: Important Safety Notice

        Prevention vention Electro ctro static static isch isch arge ( arge ) to ) to lectros lectrostatically tatically Sensitive (ES) Devices Sensitive (ES) Devices Some semiconductor (solid state) devices can be Some semiconductor (solid state) devices can be damaged easily by static damaged easily by static electricity.
  • Page 8      A  Ab ee s (PbF) Note: Lead is listed as (Pb) in the periodic table of elements. 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 In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder.
  • Page 9      A  Ap e Si al als Component Component (Y, Pb, Pr) (from AV2  (Y, Pb, Pr) (from AV2 terminal), terminal), HDMI HDMI    Sign Sign al al name name COMPONE PONENT HDMI HDMI 525 (480) (480) / / 60i,60p 60i,60p 625 (576) (576) / / 50i,...
  • Page 10: Service Hints

        Service Hints Service Hints How to remove the backcover How to remove the backcover Remove the 1 fixing screw and WIFI Remove the 1 fixing screw and WIFI DONGLE. (see Fig.5) DONGLE. (see Fig.5) Remove the 1 fixing screw and BT Remove the 1 fixing screw and BT DONGLE.
  • Page 11     hassis Board Layou hassis Board Layout P-Unit P-Unit  A-Board  A-Board LD-Board LD-Board TC-Unit on panel TC-Unit on panel RM-Unit RM-Unit K-Board K-Board LP-Board LP-Board Board Board Na Name Function Function  A-Board  A-Board AV Terminal, HDMI, H AV Terminal, HDMI, HDMI Switch, U DMI Switch, USB, USB HUB, D SB, USB HUB, Digital Audio Out, igital Audio Out,...
  • Page 12 Keys Keys Model No. Model No. One-to-One One-to-One CI PLUS PLUS DTCP-IP DTCP-IP Widevine Widevine Netflix Netflix (for USB Rec.) (for USB Rec.)    TX-L42DT50B TX-L42DT50B TX-L42DT50Y TX-L42DT50Y TX-LR42DT50 TX-LR42DT50 None None None None TX-L47DT50B TX-L47DT50B TX-L47DT50Y TX-L47DT50Y TX-LR47DT50 TX-LR47DT50...
  • Page 13     Settin ttin Insp nspection ection Voltage Confirmation Voltage Confirmation  A b  A b oar oar d d Descripti scripti on Test st point point Voltage Voltage SUB1.1V SUB1.1V TP8100 TP8100 1.10V 1.10V - - 1.22V 1.22V SUB 1.5 1.5 V V TP8101 TP8101...
  • Page 14     control. To exit Self control. To exit Self Check, Check, switch off the TV set at the power button. switch off the TV set at the power button. TX-L42DT50B TX-L42DT50B 42FHD 42FHD Panasonic Panasonic 2012LCD...
  • Page 15         TX-L47DT50Y TX-L47DT50Y 47FHD 47FHD Panasonic Panasonic 2012LCD 2012LCD Self Check Complete Self Check Complete BFD8    BFD8 O.K. O.K. PEAKS-SOFT PEAKS-SOFT 1.212 1.212 STBY STBY O.K. O.K. PEAKS-EEP PEAKS-EEP 01.04.0022 01.04.0022 MEM1 MEM1 O.K. O.K. LSI-PACKAGE LSI-PACKAGE 2.421...
  • Page 16: Power Led

        ower LED ower LED blinkin blinkin g ti g ti ming ming chart chart Subject Subject Information of LED Flashing timing chart. Information of LED Flashing timing chart. Contents Contents When abnormality has occurred the unit, the When abnormality has occurred the unit, the protection circuit operates and reset to the protection circuit operates and reset to the stand by mode.
  • Page 17     Servic rvice M Mode Functi Function MPU controls the functions switching for each IICs through IIC MPU controls the functions switching for each IICs through IIC bus in this chassis. The following setting and bus in this chassis. The following setting and adjustment can adjustment can be adjusted by remote control in be adjusted by remote control in Service Menu...
  • Page 18     Serv rvice Tool Mode ice Tool Mode How to access How to access 1. 1. Select Select [SRV-TOOL] [SRV-TOOL] in in Service Service Mode. Mode. 2. 2. Press Press [OK] [OK] button button on on the the remote remote control.
  • Page 19: Hotel Mode

        Hotel Mode Hotel Mode 1. Purpose 1. Purpose Restrict a function for hotels. Restrict a function for hotels. 2. Access command to the Hotel mode setup menu. 2. Access command to the Hotel mode setup menu. In order to display the In order to display the Hotel mode setup menu, Hotel mode setup menu, please enter the following command (within 2...
  • Page 20 Off: altogether valid Off: altogether valid RETURN RETURN *Setup: only F-key is invalid *Setup: only F-key is invalid (Tuning guide (menu) can not be selected.) (Tuning guide (menu) can not be selected.) *MENU: only F-key is invalid *MENU: only F-key is invalid (only Volume/Mute can be selected.) (only Volume/Mute can be selected.) *All: altogether invalid.
  • Page 21 Make pwd file as startup file for (a) or (b) in an empty SD card. Make pwd file as startup file for (a) or (b) in an empty SD card. 1. 1. Insert Insert an an empty empty SD SD card card to to your your PC.
  • Page 22 Data Copy(Board replacement ) Data Copy(Board replacement ) Copy TV to SD card Copy TV to SD card Perfor formin ming g Please wait for a while Please wait for a while Please do not remove the SD card Please do not remove the SD card GETTING GETTING Performing...
  • Page 23 Perfor rforming ming Data Copy(Board replacement ) Data Copy(Board replacement ) Comple pletio tion n Data copy has been successful Data copy has been successful Please remove SD card Please remove SD card FINISH FINISH     ption ption Bytes De Bytes Descriptio scriptio...
  • Page 24: Service Mode

    enable Video Distortion enable Video Distortion ON (0) / OFF (1) ON (0) / OFF (1) Countermeasure for Analog VIF. Countermeasure for Analog VIF. 3DYC 3DYC color color motion motion detect detect ON (1) (1) / / OFF OFF (0) RF Clamp Current minimum RF Clamp Current minimum ON (1) / OFF (0)
  • Page 25: Lcd Panel

    Normal Normal Highlight Highlight x: x: 0.307 0.307  0.010  0.010   y: 0.322 y: 0.322  0.010  0.010 100% WHITE 100% WHITE   Normal Normal Lowlight Lowlight x: x: 0.307 0.307    0.010  0.010 50% GRAY 50% GRAY y: 0.322 y: 0.322  0.010...
  • Page 26    C    C    2    2    R    R    0    0    E    E    7    7       D       D    N    N    6    6    U    U    U    U       R       R    T    T    T    T       A       A       E       E       O       O       T       T    T    T       T       T    0    0       B...
  • Page 27: Block Diagram

        Block Diagram (2/2) Block Diagram (2/2) K-BOARD K-BOARD  LP-BOARD  LP-BOARD SUB3.3V SUB3.3V R LED R LED SN2800 SN2800    0    0 G LED G LED    1    1 LP10 LP10    A    A    0    0     STBY 3.3V STBY 3.3V    1    1    O...
  • Page 28     Parts Location Location NOTE: NOTE: The numbers on the exploded view belo The numbers on the exploded view below refer to the exploded w refer to the exploded view section of the Replacement Parts List. view section of the Replacement Parts List. (UK) (UK) (CONTINENTAL)
  • Page 29     Parts Location Location NOTE: NOTE: The numbers on the exploded The numbers on the exploded view below refer to the view below refer to the exploded view section of the Replacement Parts List. exploded view section of the Replacement Parts List.
  • Page 30: Replacement Parts List

        Replacement Parts List Replacement Parts List Important Safety Notice Important Safety Notice Components Components Identified Identified by mark mark have have special special characteristics characteristics important important for for safety. safety. * When replacing any of * When replacing any of these components, use only manufacturers specified parts. these components, use only manufacturers specified parts.
  • Page 31     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 32     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 33     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 34     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 35     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 36     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 37     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 38     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 39     C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...
  • Page 40: Miscellaneous Components

        C C c c t t R R e e f Pa a r r t t s s N N u u m m b b e e r r Description Description C C c c t R t Re e f f P P a a r r t t s N s Nu u m m b b e e r r...

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