Panasonic TX-32LE7FA / TX-32LE7LA / TX-32LE7PA / TX-32LE7F / TX-32LE7FSA / TX-32LE7P / TX-32LE7PSA / TX-26LE7FA / TX-26LE7LA / TX-26LE7PA / TX-26LE7F / TX-26LE7FSA / TX-R32LE7A / TX-R26LE7A 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).
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.
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)
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)
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 Hints
How to remove the Pedestal assembly
Lay the main unit face down. (see Fig.5)
Remove the 4 fixing screws and the pedestal assembly. (see Fig.6)
How to remove the backcover
Remove the 16 [14] fixing screws. (see Fig.7)
Fig.5
Fig.6
SCREWS
SCREWS
Fig.7
6
SCREWS
SCREWS
Chassis Board Layout
Location of Lead Wiring
To find the Part Number of required wire in Replacement Parts List click on the wire name in red box
Board Name
Function
A-Board Main
Board
B-Board Tuner
H-Board AV3
Terminal
Key Control
Key Control
K-Board
Mains Input, Power Switch
P-Board Power
Supply
V-Board
Remote Receiver, LED IR, Bats
P-BOARD
V-BOARD
K-BOARD
A-BOARD
B-BOARD
KEY CONTROL
H-BOARD
7
A13 – P4
A8 – V2
A10
A2 – PAN
P3 – PAN
K3 – P1
K1
TU001
A6 – H2
A12 – H1
A5
A6
A7
P3
CN1
A2
V2
A12
A12 – H1
A6 – H2
[26´´]
[26´´]
A5 – SP
A5 – SP
[26´´]
P2
Setting Inspection
Voltage Confirmation
8
Confirm the following voltages:
A board
Normal mode
Test
point
Position
Voltage Description
TP3800
Connector A7, pin 20
13,8V
± 0,7V
STBY12V
TP3806
Connector A7, pin 8
23,9V
±0,5V SIGNAL24V
TP3810
Connector A7, pin 12
23,9V
± 0,5V
AUD24V
TP3811
Q3800,
+pin
3,3V
± 0,3V 3.3V_HDMI
TP3802
5,05V
± 0,25V
5V
TP3812
D38002,
-pin
8,2
± 0,5V
8V
TP3801
IC3801,
pin1
9V
± 0,9V
9V
TP3805
13,8V
± 0,7V
12V
TP3815
D3819,
-pin
30V
± 2V
30V
Standby mode
TP3813
C3801,
pin
5V
± 0,5V
STBY5V
TP3804
C3808, + pin
3,3V
± 0,2V STBY3.3V
TP3803
C3818,
+pin
1,8
± 0,1V
STBY1.8V
P board
Normal mode
TP833
Connector P2, pin 8
23,9V
± 0,5V
SIGNAL24V
TP830
Connector P2, pin 9
24,2V
± 0,5V
AUD24V
TP832
Connector P2, pin 20
13,8V
± 0,7V
STBY12V
TP830
Connector P2, pin 12
23,9V
± 0,5V
AUD24V
Standby mode
TP002
Connector P2, pin 8
24,2V
± 0,5V
SIGNAL24V
TP003
Connector P2, pin 9
<10V
AUD24V
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