Sony EVO-720P - Page 2

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fara
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the mn sown oF
cts played back om ie RECORDER oft
‘he PO and sanders wack utp Th we a pro.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer:
sone Fea ana
eimaven | cet ayer or se maven
Sunda ae io
Tayoack | pom wack ro
ne a Fe ea
Recorber |e ue
Sinatra aah wo
Tom mar
tora 0
Soman uve Ta paca
wera
cunmert_ Moos! 3
1. Check the area of your repair for unsoldered or
poorly-soldered connections. Check the entire
board surface for solder splashes and bridges.
2. Check the interboard wiring to ensure that no
wires are “pinched” or contact high-wattage
resistors.
3. Look for unauthorized replacement parts, par-
ticularly transistors, that were installed during a
previous repair. Point them out to the customer
and recommend their replacement.
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY SHADING AND MARK
AON THE SCHEMATIC DIAGRAMS,
EXPLODED
VIEWS AND IN THE PARTS LIST ARE CRITICAL TO
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 TO SAFE OPERATION ARE
IDENTIFIED IN THIS MANUAL. FOLLOW THESE PRO-
CEDURES WHENEVER CRITICAL COMPONENTS ARE
REPLACED OR IMPROPER OPERATION IS SUSPECTED.
4.
Look for parts which, though functioning, show
obvious signs of deterioration. Point them out
to the.customer and recommend their replace-
ment.
Check the B+ voltage to see it is at the values
specified.