Panasonic TH-50PB2E Service Manual ▷ View online
5
TH-50PB2E
2.2.
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.
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 PbF stamped on the back of PCB.
Caution
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 PbF 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 sol-
der. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.
der. 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 figure below)
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. How-
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
ever, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder can also be used.
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TH-50PB2E
3 Service Navigation
3.1.
Service Hint
Board Name
Function
Board Name
Function
A
Digital core signal processor
C1
Data driver (Right)
DS
Slot Interface
C2
Data driver (Center)
SC
Scan drive
C3
Data driver (Left)
SU
Scan out (Upper)
Non serviceable.
SU-Board should be exchanged for service.
Non serviceable.
SU-Board should be exchanged for service.
S1
Power switch
SD
Scan out (Lower)
Non serviceable.
SD-Board should be exchanged for service.
Non serviceable.
SD-Board should be exchanged for service.
V1
Remote receiver / LED
SS
Sustain drive
V2
Key switch
SS2
Sustain out
P
Power supply
Non serviceable.
P-Board should be exchanged for service.
Non serviceable.
P-Board should be exchanged for service.
HX
RS232C / AUDIO IN / USB
H3
Speaker terminal
7
TH-50PB2E
3.2.
Applicable signals
8
TH-50PB2E
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