Sony dvpf 11 service manual

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WARNINGII

WHEN SERVICING, DO NOT APPROACH THE LASER
EXIT WITH THE EYE TOO CLOSELY. IN CASE IT IS
NECESSARY TO CONFIRM LASER BEAM EMISSION,
BE SURE TO OBSERVE FROM A DISTANCE OF
MORE THAN 25 cm FROM THE SURFACE OF THE
OBJECTIVE LENS ON THE OPTICAL PICK-UP BLOCK.

CAUTION:
The use of optical instrument with this product will increase eye
hazard.

CAUTION

Use of controls or adjustments or performance of procedures
other than those specified herein may result in hazardous rae
diation exposure.

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WEL-
LUOKAN 1 LASERLAITE
KLASS1 LASERAPPARAT

CLASS 33 LASER

LUOKAN 3B LASER
LASERKLASS 3B

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 poorlyAsole
dered connections. Check the entire board surface for solder
splashes and bridges.

2. Check the interbuard wiring to ensure that no wires are
pinched" or contact high-wattage resistors.

3. Look for unauthorized replacement parts, particularly transise

tors, that were installed during a previous repair. Point them
out to the customer and recommend their replacement.

Look for parts which, though functioning, show obvious signs
of deterioration. Point them out to the customer and recom-
mend their replacement.

Check the B+ voltage to see it is at the values specified.

SAFETY-RELATED COMPONENT WARNING!!

COMPONENTS IDENTIFIED BY MARK A OR DOTTED
LINE WITH MARK A 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.

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