Sony SAL75300 Service Manual ▷ View online
1-2
SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)
1-4.
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-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, particularly transistors, that were installed during a previous repair. Point them out to the
customer and recommend their replacement.
4.
Look for parts which, through functioning, show obvious signs of deterioration. Point them out to the customer and recommend their
replacement.
5.
Check the B+ voltage to see it is at the values specified.
6.
Flexible Circuit Board Repairing
• Keep the temperature of the soldering iron around 270
°C during repairing.
• Do not touch the soldering iron on the same conductor of the circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering or unsoldering.
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
PUBLISHED BY SONY.
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
PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFÉS PAR UNE MARQUE 0 SUR LES
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES PIÈCES SONT
CRITIQUES POUR LA SÉCURITÉ DE FONCTIONNEMENT. NE
REMPLACER CES COMPOSANTS QUE PAR DES PIÈSES SONY
DONT LES NUMÉROS SONT DONNÉS DANS CE MANUEL OU
DANS LES SUPPÉMENTS PUBLIÉS PAR SONY.
CAUTION
Danger of explosion if battery is incorrectly replaced.
Replace only with the same or equivalent type.
Replace only with the same or equivalent type.
1-3
SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)
1-5.
TROUBLESHOOTING
1-5-1. Aperture Trouble
NG
Check operation of
the preset ring assembly.
Replace the defective part.
Check operation of the
presset ring assembly, and
replace the defective part.
Perform the aperture
diameter adjustment.
(See page 4-7.)
Perform the aperture
diameter check.
(See page 4-4.)
NG
Check operation
of the 3rd lens set
and iris control block.
OK
OK
OK
Function NG
F No. NG
Aperture trouble
Replace the defective part.
NG
NG
NG
END
OK
Perform the aperture
diameter check.
(See page 4-4.)
Ver 1.1 2007.02
1-4
SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)
1-5-2. Zoom Trouble
NG
OK
OK
OK
OK
Function NG
Position NG
Check the position
and deformation
at the tip of the
encoder brush (zoom).
Adjust the position, or replace
the encoder brush (zoom).
Check pattern of the
main flexible set.
Clean the pattern of the
main flexible set.
Zoom trouble
Replace the main
flexible set.
Perform the
zoom brush position
check/adjustment.
(See page 4-19.)
NG
NG
NG
NG
END
OK
Disassembly and check
the zoom relation parts.
the zoom relation parts.
Replace the defective part
or apply the grease.
Check the operation
again.
1-5
SAL75300 (4.5-5.6/75-300) (75-300mm F4.5-5.6)
Check the operation
again.
Replace the defective part
or apply the grease.
OK
NG
OK
OK
OK
OK
Function NG
Position NG
Focus trouble
Replace the defective part
or apply the grease.
Check the coupler
and gear set.
Check the fixed mount
and focus barrel.
NG
NG
NG
NG
NG
END
OK
Check the position
and deformation
at the tip of the
encoder brush (focus).
Adjust the position, or replace
the encoder brush (focus).
Check pattern
of the focus flexible.
Clean the pattern of the
focus flexible.
Replace the main
flexible set.
Perform the
focus brush position
check/adjustment.
(See page 4-22.)
1-5-3. Focus Trouble
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