DOWNLOAD Panasonic TX-L47WT60Y / TX-LR47WT60 Service Manual ↓ Size: 18.36 MB | Pages: 119 in PDF or view online for FREE

Model
TX-L47WT60Y TX-LR47WT60
Pages
119
Size
18.36 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LA42 CHASSIS
File
tx-l47wt60y-tx-lr47wt60.pdf
Date

Panasonic TX-L47WT60Y / TX-LR47WT60 Service Manual ▷ View online

Safety Precautions
General Guide Lines
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. 
3.  After servicing, make the following touch current checks to prevent the customer from being exposed to shock hazards. 
4.  Always ensure cover label TBM4GU193 is correctly replaced before returning to customer (see Fig.1). 
 
 
 
 
 
 
 
  
 
 
 
 
 
 
Touch-Current Check 
1.  Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check. 
2.  Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth 
ground such as a water pipe, as shown in Fig. 2. 
3.  Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network. 
4.  Check each exposed metallic part, and measure the voltage at each point. 
5.  Reserve the AC plug in the AC outlet and repeat each of the above measure. 
6.  The potential at any point (TOUCH CURRENT) expressed as voltage U1 and U2, does not exceed the following values: 
For a. c.: U1 = 35 V (peak) and U2 = 0.35 V (peak); 
For d. c.: U1 = 1.0 V, 
Note:
 
The limit value of U2 = 0.35 V (peak) for a. c. and U1 = 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 
2.0 mA d. c. 
The limit value U1 = 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 
kHz. 
7.  In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should 
be repaired and rechecked before it is returned to the customer. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fig. 2 
TO 
APPLIANCES 
EXPOSED 
METAL PARTS 
Resistance values in ohms (
) 
R
0
=500
 
R
S
=1500
 
C
S
=0.22
F 
10k
 
0.022
F 
COLD 
WATER PIPE 
(EARTH GROUND)
 
V: Voltmeter or oscilloscope 
  (r.m.s. or peak reading) 
Measuring network for TOUCH CURRENTS 
Input resistance: 
1M 
Input capacitance:
200pF 
Frequency range: 15Hz to 1MHz and d.c.respectively 
NOTE – Appropriate measures should be taken to obtain the correct value in case of non-sinusoidal waveforms 
U
2
 (V) 
Fig. 1 
U
1
 (V) 
3
Prevention of Electrostatic 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" components. The following techniques should be used to help reduce the incidence of 
component damage caused by electrostatic discharge (ESD). 
 
1.  Immediately before handling any semiconductor component or semiconductor-equipped assembly, drain off any ESD on 
your body by touching a known earth ground. Alternatively, obtain and wear a commercially available discharging ESD 
wrist strap, which should be removed for potential shock reasons prior to applying power to the unit under test. 
2.  After removing an electrical assembly equipped with ES devices, place the assembly on a conductive surface such as 
aluminum foil, to prevent electrostatic charge build up or exposure of the assembly. 
3.  Use only a grounded-tip soldering iron to solder or unsolder ES devices. 
4.  Use only an anti-static solder removal device. Some solder removal devices not classified as "anti-static (ESD 
protected)" can generate electrical charge sufficient to damage ES devices. 
5.  Do not use freon-propelled chemicals. These can generate electrical charges sufficient to damage ES devices. 
6.  Do not remove a replacement ES device from its protective package until immediately before you are ready to install it. 
(Most replacement ES devices are packaged with leads electrically shorted together by conductive foam, aluminum foil 
or comparable conductive material). 
7.  Immediately before removing the protective material from the leads of a replacement ES device, touch the protective 
material to the chassis or circuit assembly into which the device will be installed. 
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 harmless 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). 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
There are special components used in this equipment which are important for safety. 
These parts are marked by      in schematic diagrams, exploded views and replacement parts list. It is essential that 
these critical parts should be replaced with manufacturer’s specified parts to prevent shock, fire, or other hazards. Do 
not modify the original design without permission of manufacturer. 
IMPORTANT SAFETY NOTICE
4
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 used in our manufacturing process and discussed below is (Sn+Ag+Cu).
  
That is Tin (Sn), Silver (Ag) and Copper (Cu) although other types are available.
  
 
This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, 
we’d suggest the use of Pb free solder as well, although Pb solder may be used. 
PCBs manufactured using lead free solder will have the PbF within a leaf Symbol  
 
             stamped on the back of PCB. 
 
Caution  
 
Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F (30~40°C) 
higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F (370 ± 10 °C). 
 
Pb free solder will tend to splash when heated too high (about 1100 °F or 600 °C). 
If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before 
applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder. 
 
After applying PbF solder to double layered boards, please check the component side for excess solder which may 
flow onto the opposite side. (see Fig.3) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Suggested Pb free solder  
There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. 
However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used. (see Fig.4) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Fig.3 
Fig.4 
5
Service Navigation 
Chassis Board Layout 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Board Name 
Function 
A-Board 
Camera module, AV Terminals, HDMI, USB, Digital Audio Out, Tuner DVB-A/T/T2/C, 
Tuner DVB-S/S2,  CI slot, SD slot, Ethernet, Headphones, Wireless LAN, Bluetooth, 
AVSW, Peaks IC_Pro4, Speaker out, Woofer, Flash Memory, DDR SDRAM 
P-Board 
Main Input, Power Supply 
K-Board 
Remote Receiver, Power and Timer  LED, C.A.T.S 
GK-Board 
Key control, Power switch 
LD-Board LED 
Driver 
LL-Board Ilumination 
LED 
LR-Board Ilumination 
LED 
TC-Board 
Image Processor_GCX, T-CON 
 
P-BOARD 
K-BOARD 
A-BOARD 
GK-BOARD 
TC-BOARD 
LD-BOARD 
LL-BOARD 
LR-BOARD 
6
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Panasonic TX-L47WT60Y / TX-LR47WT60 Service Manual ▷ Download

  • DOWNLOAD Panasonic TX-L47WT60Y / TX-LR47WT60 Service Manual ↓ Size: 18.36 MB | Pages: 119 in PDF or view online for FREE
  • Here you can View online or download the Service Manual for the Panasonic TX-L47WT60Y / TX-LR47WT60 in PDF for free, which will help you to disassemble, recover, fix and repair Panasonic TX-L47WT60Y / TX-LR47WT60 TV. Information contained in Panasonic TX-L47WT60Y / TX-LR47WT60 Service Manual (repair manual) includes:
  • Disassembly, troubleshooting, maintenance, adjustment, installation and setup instructions.
  • Schematics, Circuit, Wiring and Block diagrams.
  • Printed wiring boards (PWB) and printed circuit boards (PCB).
  • Exploded View and Parts List.