DOWNLOAD Panasonic TX-42AS750E / TX-42ASW754 / TX-42ASR750 (serv.man2) Service Manual ↓ Size: 20.32 MB | Pages: 87 in PDF or view online for FREE

Model
TX-42AS750E TX-42ASW754 TX-42ASR750 (serv.man2)
Pages
87
Size
20.32 MB
Type
PDF
Document
Service Manual
Brand
Device
TV / LA51 CHASSIS
File
tx-42as750e-tx-42asw754-tx-42asr750-sm2.pdf
Date

Panasonic TX-42AS750E / TX-42ASW754 / TX-42ASR750 (serv.man2) Service Manual ▷ View online

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 
AV Terminal, HDMI, USB, WIFI, Digital Audio Out, TUNER-A+(T2+C+S) x2, 
DVB-T2/T/S/C Dem, CI Slot , SD Slot , Peaks IC_LD6, Speaker out,  
eMMc Memory, STM EEPROM, DDR SDRAM
 
P-Board 
 
Main Input,  Power Supply, LED DRIVER
  
K-Board 
Remote Receiver, Power and Timer  LED, C.A.T.S 
GK-Board 
Key control, Power switch 
  
A-BOARD 
K-BOARD 
P-BOARD 
GK-BOARD 
6
Service Hints 
 
How to remove the backcover 
 
Lay the main unit face down. (see Fig.5) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Remove the 4 fixing screws and the pedestal assembly. (see Fig.6) 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Remove the 24 fixing screws and the backcover. (see Fig.7) 
 
  
 
 
 
 
 
 
 
 
 
 
 
 
 
Fig.5 
Fig.6 
(1)
(1) 
(1)
(1)
             SCREWS 
(1) THE5ZL002N /4pcs/ 
Fig.7 
            SCREWS 
(2) THTD037J /16pcs/  
(3) THEC1509 /8pcs/  
 
(2)
(2)
(1)
(2) 
(2) 
(2) 
(1) 
(2)
(2) 
(2)
(3) 
(3)
(3) 
(3) 
(2) 
(2)
(2) 
(3)
(3)
(2) 
(3)
(3)
(2)
(2) 
(2) 
(2) 
7
Applicable Signals 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Note: 
 
Signals other than above may not be displayed properly. 
 
The above signals are reformatted for optimal viewing on your display. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Signal name 
COMPONENT 
HDMI 
525 (480) / 60i,60p 
625 (576) / 50i, 50p 
750 (720) / 60p, 50p 
1,125 (1,080) / 60i, 50i 
1,125 (1,080) / 60p 
 
1,125 (1,080) / 50p 
 
1,125 (1,080) / 24p 
 
Component (Y, Pb, Pr) (from AV2 terminal), HDMI 
8
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