Sony DSLR-A300K (serv.man2) Service Manual ▷ View online
1-2
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
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.
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.
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
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
1-5.
TROUBLESHOOTING
1-5-1. Aperture Trouble
Ver 1.1 2007.02
NG
Check operation of
the preset ring.
Replace the lens
mount block.
Replace the lens
mount block.
Perform the aperture
diameter adjustment.
(See page 4-7.)
Perform the aperture
diameter check.
(See page 4-4.)
NG
Check operation
of the rear lens
group block.
OK
OK
OK
Function NG
F No. NG
Aperture trouble
Replace the rear lens
group block.
NG
NG
NG
END
OK
Perform the aperture
diameter check.
(See page 4-4.)
1-4
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
1-5-2. Zoom Trouble
NG
OK
OK
OK
OK
Function NG
Position NG
Check the position
and deformation
at the tip of
the zoom brush.
Adjust the position, or
replace the zoom brush.
Check pattern
of the zoom flexible.
Clean the pattern of the
zoom flexible.
Zoom trouble
Replace the main
flexible block.
Perform the
zoom brush position
check/adjustment.
(See page 4-17.)
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
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
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
AF coupler and
coupler gear.
Check the
gear barrel.
NG
NG
NG
NG
NG
END
OK
Check the position
and deformation
at the tip of
the focus brush.
Adjust the position, or
replace the focus brush.
Check pattern
of the focus flexible.
Clean the pattern of the
focus flexible.
Replace the main
flexible block.
Perform the
focus brush position
check/adjustment.
(See page 4-20.)
1-5-3. Focus Trouble
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