Panasonic TH-37PV80PA / TH-37PX80BA / TH-37PX80EA / TH-42PV80PA / TH-42PX80BA / TH-42PX80EA Service Manual ▷ View online
4
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.
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
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.
5
3 Service Navigation
3.1.
Service Hint (42 inch)
Board Name
Function
Board Name
Function
P
Power Supply
C1
Data Driver (Lower Right)
A
DC-DC Converter
Speaker out, Sound Processor
AV Terminal, AV Switch
Digital Signal Processor, MPU, HDMI Interface
Peaks Lite 2p
Format Converter, Plasma AI, Sub-Field Processor
Speaker out, Sound Processor
AV Terminal, AV Switch
Digital Signal Processor, MPU, HDMI Interface
Peaks Lite 2p
Format Converter, Plasma AI, Sub-Field Processor
C2
Data Driver (Lower Left)
SC
Scan Drive
SU
Scan out (Upper)
SD
Scan out (Lower)
SS
Sustain Drive
G
Key Switch, Front Terminal
K
Remote receiver, Power LED
GS
SD Card Slot
S
Power Switch
6
3.2.
Service Hint (37 inch)
Board Name
Function
Board Name
Function
P
Power Supply
C1
Data Driver (Lower Right)
A
DC-DC Converter
Speaker out, Sound Processor
AV Terminal, AV Switch
Digital Signal Processor, MPU, HDMI Interface
Peaks Lite 2p
Format Converter, Plasma AI, Sub-Field Processor
Speaker out, Sound Processor
AV Terminal, AV Switch
Digital Signal Processor, MPU, HDMI Interface
Peaks Lite 2p
Format Converter, Plasma AI, Sub-Field Processor
C2
Data Driver (Lower Left)
SC
Scan Drive
SM
Scan out
SS
Sustain Drive
G
Key Switch, Front Terminal
GS
SD Card Slot
K
Remote receiver, Power LED
S
Power Switch
7
3.3.
Applicable signals