Read Sony KLV-40W300A / KLV-46W300A (serv.man2) Service Manual online
– 6 –
KLV-40/46W300A
RM-GA010
The circuit boards used in these models have been processed using
Lead Free Solder. The boards are identified by the LF logo located
close to the board designation e.g. U1 etc [ see example ]. The
servicing of these boards requires special precautions to be taken as
outlined below.
Lead Free Solder. The boards are identified by the LF logo located
close to the board designation e.g. U1 etc [ see example ]. The
servicing of these boards requires special precautions to be taken as
outlined below.
CAUTION
example 1
It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints.
Lead Free Solder is available under the following part numbers :
Lead Free Solder is available under the following part numbers :
Due to the higher melting point of Lead Free Solder the soldering iron tip temperature needs to be set to 370 degrees
centigrade. This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery
characteristics.
centigrade. This requires soldering equipment capable of accurate temperature control coupled with a good heat recovery
characteristics.
For more information on the use of Lead Free Solder, please refer to http://www.sony-training.com
How to Find a Good Earth Ground
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground. If the retaining
screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
A cold-water pipe is a guaranteed earth ground; the cover-plate retaining screw on most AC outlet boxes is also at earth ground. If the retaining
screw is to be used as your earth ground, verify that it is at ground by measuring the resistance between it and a cold-water pipe with an
ohmmeter. The reading should be zero ohms.
If a cold-water pipe is not accessible, connect a 60- to 100-watt trouble- light (not a neon lamp) between the hot side of the receptacle and the
retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground
potential (see Figure B).
retaining screw. Try both slots, if necessary, to locate the hot side on the line; the lamp should light at normal brilliance if the screw is at ground
potential (see Figure B).
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7
Figure B. Checking for earth ground.
Trouble Light
AC Outlet Box
Ohmmeter
Cold-water Pipe
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