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GENERAL SAFETY NOTES
IMPORTANT SAFETY NOTICE
Proper service and repair is important to the safe, reliable operation of all Philips Consumer Electronics
Company** equipment. The service procedures recommended by Philips and described in this service
manual are effective methods of performing service operations. Some of these service operations require
the use of tools specially designed for the purpose. The special tools should be used when and as
recommended.
It is important to note that this manual contains various CAUTIONS and NOTICES which should be
carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists
that improper service methods may damage the equipment. It also is important to understand that
these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Philips could not possibly know, evaluate
and advise the service trade of all conceivable ways in which service might be done or of the possible
hazardous consequences of each way. Consequently, Philips has not undertaken any such broad
evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by
Philips must first satisfy himself thoroughly that neither his safety nor the safe operation of the
equipment will be jeopardized by the service method selected.
** Hereafter throughout this manual, Philips Consumer Electronics Company will be referred to as
Philips.
WARNING
Critical components having special safety characteristics are identified with a
or "S" by the Ref. No.
in the parts list and enclosed within a broken line* (where several critical components are grouped in
one area) along with the safety symbol
on the schematics or exploded views. Use of substitute
replacement parts which do not have the same specified safety characteristics may create shock, fire, or
other hazards. Under no circumstances should the original design be modified or altered without written
permission from Philips. Philips assumes no liability, express or implied, arising out of any unauthorized
modification of design. Servicer assumes all liability.
-Broken Line ____ _ ____ _ ____ _ ____
SAFETY CHECKS
After the original service problem has been corrected, a complete safety check should be made. Be sure
to check over the entire set, not just the areas where you have worked. Some previous servicer may
have left an unsafe condition, which could be unknowingly passed on to Your customer. Be sure to
check all of the following:
FIRE AND SHOCK HAZ ARD
IMPLOSION
X-RADIAT ION
LEAKAGE CURRENT COLD CHECK
LEAKAGE CURRENT HOT CHECK
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PICT URE T UBE REPLACEM ENT
PARTS REPLACEMENT
FIRE AND SHOCK HAZARD
1. Be sure all components are positioned in such a way as to avoid the possibility of adjacent
component shorts. This is especially important on those chassis which are transported to and from the
service shop.
2. Never release a repaired unit unless all protective devices such as insulators, barriers, covers, strain
reliefs, and other hardware have been installed in accordance with the original design.
3. Soldering and wiring must be inspected to locate possible cold solder joints, solder splashes, sharp
solder points, frayed leads, pinched leads, or damaged insulation (including the ac cord). Be certain to
remove loose solder balls and all other loose foreign particles.
4. Check across-the-line components and other components for physical evidence of damage or
deterioration and replace if necessary. Follow original layout, lead length, and dress.
5. No lead or component should touch a receiving tube or a resistor rated at 1 watt or more. Lead
tension around protruding metal surfaces or edges must be avoided.
6. Critical components having special safety characteristics are identified with an 'S' by the Ref. No. in
the parts list and enclosed within a broken line* (where several critical components are grouped in one
area) along with the safety symbol on the schematic diagrams and /or exploded views.
7. When servicing any unit, always use a separate isolation transformer for the chassis. Failure to use
a separate isolation transformer may expose you to possible shock hazard, and may cause damage to
servicing instruments.
8. Many electronic products use a polarized ac line cord (one wide pin on the plug). Defeating this
safety feature may create a potential hazard to the servicer and the user. Extension cords which do not
incorporate the polarizing feature should never be used.
9. After reassembly of the unit, always perform an
ac leakage test or resistance test from the line cord to
all exposed metal parts of the cabinet. Also, check all metal control shafts (with knobs removed),
antenna terminals, handles, screws, etc., to be sure the unit may be safely operated without danger of
electrical shock.
* Broken line ____ _ ____ _ ____ _ ____
IMPLOSION
1. All picture tubes used in current model receivers are equipped with an integral implosion system.
Care should always be used, and safety glasses worn, whenever handling any picture tube. Avoid
scratching or otherwise damaging the picture tube during installation.
2. Use only replacement tubes specified by the manufacturer.
