SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED
LINE WITH MARK 0 ON THE SCHEMATIC DIAGRAMS
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 PUB-
LISHED BY SONY.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety checks before releasing the set to the customer.
1. Check the area of your repair for unsoldered or poorly-sol-4. Look for parts which, though functioning, show obvious signs
dered connections. Check the entire board surface fof deterioration. Point them out to the customer and recom-or solder
splashes and bridges.mend their replacement.
2. Check the interboard wiring to ensure that no wires are5. Check the B+ voltage to see it is at the values specified.
Opinched� or contact high-wattage resistors.6. Flexible Circuit Board Repairing
3. Look for unauthorized replacement parts, particularly transis-
Y Keep the temperature of the soldering iron around 270 uC
tors, that were installed during a previous repair. Point themduring repairing.
out to the customer and recommend their replacement.Y Do not touch the soldering iron on the same conductor of
the circuit board (within 3 times).
Y Be careful not to apply force on the conductor when sol-
dering or unsoldering.
� 2 � |
ACEC
