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VSX-D704S,
VSX-79
1. SAFETY INFORMATION
This service manual
is intended for gualified service technicians;
it is not meant
for the casual
do-it-yourselfer. Gualified technicians have the necessary test eguipment and tools, and have been
trained to properly and safely repair complex products such as those covered by this manual.
Improperly performed repairs can adversely affect the safety and reliability of the product and may void
the warranty. If you are not qualified to perform the repair of this product properly and safely, you
should not risk trying to do so and refer the repair to a gualified service technician.
WARNING
Lead in solder used in this product is listed by the California Health and Welfare agency as a known reproductive toxicant which
may cause birth defects or other reproductive harm (California Health & Safety Code, Section 25249.5).
When servicing or handling circuit boards and other components which contain lead in solder, avoid unprotected skin contact with
the solder. Also, when soldering do not inhale any smoke or fumes produced.
NOTICE
(FOR CANADIAN MODEL ONLY)
Fuse symbols ME=#
(fast operating fuse)
and/or -ME=X
(slow operating fuse) on PCB indicate that replacement parts
must be of identical designation.
REMAROUE
(POUR MODELE CANADIEN SEULEMENT)
Les symboles de fusible ME==DH (fusible de type rapide) etou
WE
(fusible de type lent) sur CCI indiquent que les
piéces de remplacement doivent avoir la méme désignation.
(FOR USA MODEL ONLY)
1. SAFETY PRECAUTIONS
The following check should be performed tor the
ANY MEASUREMENTS
NOT WITHIN THE LIMITS
OUTLINED
ABOVE
ARE INDICATIVE
OF A PO-
continued
protection of the customer
and service
technician.
LEAKAGE CURRENT CHECK
Measure
leakage current to a known
earth ground
(water pipe, conduit, etc.) by
connecting
a leakage
current
tester
such
as
Simpson
Model
229-2
or
equivalent between the earth ground and all exposed
metal parts of the appliance
(input/output terminals,
screwheads,
metal overlays, control shaft, etc.).
Plug
the AC line cord of the appliance directly into a 120V
AC 60 Hz outlet and turn the AC power switch on. Any
current measured
must not exceed 0.5 mA.
Em
S
Reading should
not be above
Leakage | 0.5 mA
4
current
Device
tester
under
Test all exposed
metal surfaces
Also test with plug
reversed
(Using
AC
adapter
piug
as required)
Earth ground
AC Leakage Test
TENTIAL
SHOCK
HAZARD
AND MUST
BE COR-
RECTED
BEFORE
RETURNING
THE APPLIANCE
TO THE CUSTOMER.
2. PRODUCT SAFETY NOTICE
Many electrical and mechanical parts in the appli-
ance have special safety related characteristics. These
are
often not
evident
from visual
inspection
nor
the
protection
afforded
by them
necessarily
can
be ob-
tained
by using
replacement
components
rated for
voltage, wattage , etc.
Replacement parts which have
these special
safety
characteristics
are identified
in
this Service Manual.
Electrical
components
having
such
features
are
identified by marking with a A on the schematics and
on the parts list in this Service Manual.
The use of a substitute replacement component which
dose not have the same
safety characteristics as the
PIONEER
recommended
replacement
one, shown
in
the parts list in this Service Manual, may create shock,
fire, or other hazards.
Product Safety
is continuously
under
review
and
new
instructions
are
issued
from time to time.
For
the
latest
information,
always
consult
the current
PIONEER Service Manual.
A subscription
to, or
ad-
ditional copies of, PIONEER
Service
Manual
may be
obtained at a nominal charge from PIONEER.
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