Sony KLV-32EX330 Service Manual page 6

Safety Notes
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1) A cold-water pipe is a guaranteed earth ground; the cover-plate retaining
screw on most AC outlet boxes is also at earth ground.
2) 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 d b i th i t
ohmmeter. The reading should be zero ohms.
3) 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 3). light at normal brilliance if the screw is at ground potential (see Figure 3).
Figure 3. Checking for earth ground.
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1) These servicing instructions are for use by qualified service personnel only. 1) These servicing instructions are for use by qualified service personnel only.
2) To reduce the risk of electric shock, do not perform any servicing other than
that contained in the operating instructions unless you are qualified to do so.
3) An isolation transformer should be used during any service to avoid possible
shock hazard, because of live chassis. The chassis of this receiver is directly
connected to the ac power line. p
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4) Be sure to follow these guidelines to protect your property and avoid causing
serious injury.
• Carry the TV with an adequate number of people; larger size TVs require
ith
two or more people.
• Correct hand placement while carrying the TV is very important for safety
and to avoid damages.
5) Components identified by shading and ! mark on the schematic diagrams,
exploded views, and in the parts list are critical for safe operation. Replace exploded views, and in the parts list are critical for safe operation. Replace
these components with Sony parts whose part numbers appear as shown in
this manual or in supplements published by Sony. Circuit adjustments that
are critical for safe operation are identified in this manual. Follow these
procedures whenever critical components are replaced or improper
operation is suspected.
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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 Solder. The boards are identified by the LF logo located close to the board
designation.
Figure 4: LF
Logo
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Figure 5: LF logo on circuit board
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50 *$
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