Sony SAL1870 - Zoom Lens - 18 mm User manual

SERVICE NOTE
SPECIFICATIONS
REPAIR PARTS LIST
DISASSEMBLY ADJUSTMENTS
SERVICE MANUAL
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Revision History
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Sony EMCS Co.
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
Ver. 1.5 2008.04
LENS FOR DSLR CAMERA
2008D0800-1
© 2008.04
Published by KohdaTEC9-876-947-13
US Model
Canadian Model
AEP Model
Chinese Model
SAL1870
(3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
• About the Lens Test Projector
Revised-2
Replace the previously issued
SERVICE MANUAL 9-876-947-12
with this Manual.

— 2 —
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
SPECIFICATIONS
• This lens is equipped with a distance encoder. The distance encoder allows more accurate measurement (ADI) by using a flash for ADI.
• Depending on the lens mechanism, the focal length may change with any change of the shooting distance. The focal length assumes the lens is focused
at infinity.
Equivalent 35mm-format focal length*1(mm)
27-105
Lens groups elements
9-11
Angle of view*1
76°-23°
*1The values for equivalent 35mm-format focal length and angle of view are based on Digital Single Lens Reflex Cameras equipped with an APS-
C sized image sensor.
Minimum focus*2(m (feet))
0.38 (1.2)
*2Minimum focus is the shortest distance from the image sensor to the subject.
Maximum magnification (X)
0.25
Minimum f-stop
f/22-36
Filter diameter (mm)
55
Dimensions (maximum diameter ××
××
×height) (mm (in.))
Approx. 66 ×77 (2 5/8 ×3 1/8)
Mass (g (oz.))
Approx. 235 (8 5/16)
Included items
Lens (1), Front lens cap (1), Rear lens cap (1), Lens hood (1), Set of printed documentation
Designs and specifications are subject to change without notice.

—3 —
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
TABLE OF CONTENTS
Section Title Page
1. SERVICE NOTE
1-1. Chemicals ·······································································1-1
1-2. Exterior Parts··································································1-1
1-3. Unleaded Solder ·····························································1-1
1-4. Safty Check-out······························································1-2
1-5. Troubleshooting ·····························································1-3
2. DISASSEMBLY
2-1. Disassembly ···································································2-2
3. REPAIR PARTS LIST
3-1. Exploded Views ······························································3-1
3-2. Supplied Accessories······················································3-6
4. ADJUSTMENTS
4-1. Preparations····································································4-1
4-2. Aperture Diameter Check/Adjustment···························4-4
4-3. Projective Resolving Power Check ································4-9
4-4. Focus-shift/Flange Back (f’F) Check/Adjustment ·······4-12
4-5. Lens ROM Check·························································4-16
4-6. Zoom Brush Position Check/Adjustment and
Pattern Check ·······························································4-17
4-7. Focus Brush Position Check/Adjustment and
Pattern Check ·······························································4-20
4-8. Error Code List·····························································4-23

1-1
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
1. SERVICE NOTE
1-1. Chemicals
Some chemicals used for servicing are highly volatile.
Their evaporation caused by improper management affects your health and environment, and wastes resources.
Manage the chemicals carefully as follows.
•Store chemicals sealed in a specific place to prevent from exposure to high temperature or direct sunlight.
•Avoid dividing chemicals into excessive numbers of small containers to reduce natural evaporation.
•Keep containers sealed to avoid natural evaporation when chemicals are not in use.
•Avoid using chemicals as much as possible. When using chemicals, divide only required amount to a small plate from the container and
use up it.
1-2. Exterior Parts
Be careful to the following points for exterior parts used in this unit.
•Use a piece of cleaning paper or cleaning cloth for cleaning exterior parts.Avoid using chemicals.
Even if you have to use chemicals to clean heavy dirt, don’t use paint thinner, ketone, nor alcohol.
•Insert the specific screws vertically to the part when installing a exterior part.
Be careful not to tighten screws too much.
1-3. Unleaded Solder
This unit uses unleaded solder.
Boards requiring use of unleaded solder are printed with the lead free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with the lead free mark due to their particular size.)
: LEAD FREE MARK
Be careful to the following points to solder or unsolder.
•Set the soldering iron tip temperature to 350 °C approximately.
If cannot control temperature, solder/unsolder at high temperature for a short time.
Caution: The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful!
Unleaded solder is more viscous (sticky, less prone to flow) than ordinary solder so use caution not to let solder bridges
occur such as on IC pins, etc.
•Be sure to control soldering iron tips used for unleaded solder and those for leaded solder so they are managed separately. Mixing
unleaded solder and leaded solder will cause detachment phenomenon.

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 0OR DOTTED LINEWITH
MARK 0ON 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 0SUR 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.
CAUTION
Dangerofexplosionif battery isincorrectlyreplaced.
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. ApertureTrouble
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
NGNG
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. ZoomTrouble
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.
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.
NGNG
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. FocusTrouble

2-1
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
Cut and remove the part of gilt
which comes off at the point.
(Be careful or some
pieces of gilt may be left inside)
2. DISASSEMBLY
NOTE FOR REPAIR
• Make sure that the flat cable and flexible board are not cracked of bent at the terminal.
Do not insert the cable insufficiently nor crookedly.
• When remove a connector, dont’pull at wire of connector.It is possible that a wire is snapped.
• When installing a connector, dont’press down at wire of connector.
It is possible that a wire is snapped.
• Do not apply excessive load to the gilded flexible board.
UNIVERSALWRENCH
In case of the following notches or holes are located in the lens block, etc during disassembling/
assembling the lens, Use the universal wrench.
How to Use
Attach the chip-A or chip-B to the universal wrench.
For the notches: chip-A
For the holes: chip-B
Match the universal wrench to the holes or notches of the lens block, etc.
When top of tip does not reach holes or notches because the fixed screw becomes obstructive,
replace the fixed screw to below.
+B 3X5 7-682-546-09
Notches Holes
Universal wrench
J-6082-609-A
Chip-A for
universal wrench:
J-6082-609-1
Chip-B for
universal wrench:
J-6082-609-2
Ver 1.1 2007.02
Notches
Chip-A
Chip-A
Chip-B
Chip-B
Chip
Fixed screw
Fixed screw
Chip
Match the universal wrench
to the width of holes or notches. Universal wrench
Holes

2-2
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
2-1. DISASSEMBLY
2-1-1. LENS MOUNT BLOCK AND ZOOM RETAINER TUBE BLOCK
(See Page 2-3.)
2Mount Decoration Plate
1Main Flexible Block
4AF Coupler
5Zoom Retainer Tube
Block
6Coupler Gear
9Zoom Guide Roller
7Brush
8Zoom Rubber Ring
3Back Adjustment Washer 4Coupler Adjustment
HELP01
HELP02
EXPLODEDVIEW
ZOOM BRUSH POSITION
ADJUSTMENT
FOCUS-SHIFT/
FLANGE BACK
ADJUSTMENT
FOCUS-SHIFT/
FLANGE BACK
ADJUSTMENT
APERTURE DIAMETER
ADJUSTMENT
and Lens Mount Block
Washer

2-3
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
2-1-2. GEAR BARREL, ZOOM CAM BARREL AND ZOOM CONTROLTUBE BLOCK
HELP03
HELP04
HELP05
HELP07
HELP08
HELP09
HELP10
HELP10
HELP06
FOCUS BRUSH POSITION
ADJUSTMENT
EXPLODEDVIEW
EXPLODEDVIEW
(See Page 2-4.)
4Focus Brush
5Zoom Cam
Barrel
2Zoom Control
3Joint Tube
Block
1Zoom Coupling
6Gear Barrel
7Focus Stopper
8Front Lens
91st Moving
Barrel
0Zoom
Roller
Tube Block
Barrel
Barrel
FOCUS-SHIFT
/FLANGE BACK
ADJUSTMENT

2-4
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
2-1-3. JOINTTUBE BLOCK
2Fixed Barrel
3Joint Tube Block
1Rear Component
Lens Block
HELP11
HELP13
HELP12
EXPLODEDVIEW
Never disassemble this part.
Ver 1.2 2007.05

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
Note for assembling and grease applying positions are shown.
HELP01
Grease (G-80): J-6082-625-A
Grease (G-85): J-6082-626-A
Apply the grease (G-80, G-85) to the instruction part of the AF coupler.
HELP02
Grease (G-85): J-6082-626-A
Apply the grease (G-85) to the instruction part of the coupler gear.
HELP03
Attach the polyester tape (black) 10mm and friction sheet-A to the zoom barrel as illustrated.
Apply the grease (G-85)
HELP
Apply the grease (G-85)
Apply the grease (G-80)
Gate portion
Polyester Tape (Black) 10mm
(1mm x 40mm)
Friction Sheet-A
Reference line
Tip portion of the zoom barrel Enlarged section of the zoom barrel

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
HELP04
Attach the black decoration line to the zoom barrel as illustrated.
Note: Attach the black decoration line from the opposite side of zoom scale “35” for hiding the extra scraps.
HELP05
Grease (G-116): J-6082-628-A
Anti-diffusion agent (A-20): J-6082-611-A
Apply the grease (G-116) and anti-diffusion agent (A-20) to the instruction part of the zoom barrel.
HELP06
Grease (G-116): J-6082-628-A
Anti-diffusion agent (A-20): J-6082-611-A
Apply the grease (G-116) and anti-diffusion agent (A-20) to the instruction part of the 1st moving barrel.
Black Decoration Line
Enlarged section of the zoom barrel
Apply the grease (G-116) (Groove portion)
Apply the anti-diffusion agent (A-20)
(Circumference of inside and outside)
Apply the grease (G-116)
(Helicoid: Inside circumference)
Apply the anti-diffusion agent
(A-20) (All circumference)
Apply the grease (G-116)
(Liner groove: 3 areas) Apply the grease (G-116)
(Both side of cam portion: 3 areas)

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
HELP07
Anti-diffusion agent (A-20): J-6082-611-A
Adhesive bond (B-10): J-6082-612-A
1. Match the positions of 1st moving barrel and zoom barrel as illustrated.
2. Insert the 1st moving barrel into the zoom barrel to the end with setting projection and linear groove.
After inserting, check that the positions of the window of zoom barrel and the hole of 1st moving barrel are as shown in the Fig.1.
3. Turn the 1st moving barrel to the arrow direction about 10 degrees, and engage the cam part of the 1st moving barrel and projection
of the zoom barrel as shown in the figure.
Check that the positions of the window of zoom barrel and the hole of 1st moving barrel are as shown in the Fig.2.
1st Moving Barrel
Liner groove
Zoom Barrel
Projections
Hole
Window
Fig.1
Cam portion of the
1st moving barrel
Turn the 1st moving barrel
about 10 degrees
Projections of the
zoom barrel
Fig.2

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
4. Apply the anti-diffusion agent (A-20) to the instruction part of the front lens barrel.
5. Match the positions of the window and the focus linear slider as shown in the figure, and attach the front lens barrel to the 1st moving
barrel.
6. Connect helicoidally the front lens barrel to the 1st moving barrel by turning it about 180 degrees in the direction of the arrow.
7. Attach the focus stopper as shown in the figure, and fix it with the two screws tentatively.
8. After the focus-shift/flange back (f’F) adjustment is completed, apply the adhesive bond (B-10) as shown in the figure.
About 180 degrees
Window
Front Lens Barrel
Focus liner slider
Apply the anti-diffusion agent
(A-20) (All circumference)
1st Moving Barrel
Focus Stopper
Apply the adhesive bond (B-10)

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
HELP08
Grease (G-116): J-6082-628-A
1. Apply the grease (G-116) to the instruction part of the gear barrel.
2. Match the positions of joint tube block and gear barrrel, and insert the gear barrel into the joint tube block to the end as shown in the
figure.
3. Turn the gear barrel about 15 degrees from the end to the arrowed direction, and engage bayonet to the joint tube block.
Apply the grease (G-116)
(Circumference area)
Apply the grease (G-116)
(Both sides: 3 areas)
About 15 degrees
from the end to the
arrowed direction
Gear Barrel
Joint Tube Block

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
HELP09
Grease (G-116): J-6082-628-A
1. Apply the grease (G-116) to the instruction part of the zoom cam barrel.
2. Match the positions of joint tube block and zoom cam barrel, and insert the zoom cam barrel into the joint tube block to the end as
shown in the figure.
3. Turn the zoom cam barrel about 90 degrees from the end to the arrowed direction, and engage bayonet to the joint tube block.
Apply the grease (G-116) (Cam part: 3 areas) Apply the grease (G-116) (All circumference)
About 90 degrees
from the end to the
arrowed direction
Joint Tube Block
Zoom Cam Barrel

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
HELP10
1. Turn the gear barrel until the two screw holes of the gear barrel are seen from the square window as shown in the figure.
2. Attach the focus brush to the gear barrel, and fix them with the two screws tentatively.
3. Pull the front lens barrel to the telephoto end, and check that the two screw heads are seen from the window.
4. Put the zoom control tube block on the desk to let the front lens barrel sink into the deepest point with its weight, and keep the
position.
5. Check that the position of the zoom control tube block is as shown in the figure when seeing the inside in the state of step 4.
Square window
Screw holes of the gear barrel
Focus Brush
Window
Front Lens Barrel
Front Lens Barrel
The liner slider of the 1st moving
barrel is about at this point.
(Focal-length around 35 mm)
Focus Stopper
Focus stopper is attached
the front lens barrel.

HELP
SAL1870 (3.5-5.6/18-70) (DT 18-70mm F3.5-5.6)
6. Match the positions of the linear slider positioned at the window of the zoom control tube block and the guide key positioned at two
holes of joint tube block.
7. Insert the joint tube block into the zoom control tube block to the end.
Note: If it cannot be inserted, return to step 1, and check that the focus connection part is matched to the claw of the gear barrel.
8. After inserting, check that the position is as shown in the figure.
9. Turn the zoom barrel until the screw hole of the zoom cam barrel is seen from the hole of the zoom barrel as shown in the figure.
10. Attach the zoom coupling roller, and fix it with the screw.
Window
Screw hole of the zoom cam barrel
Hole for the zoom coupling roller
Window
Screw hole of the zoom cam barrel
Zoom Coupling Roller
Zoom Barrel
Window Two holes
Focus Connection Part
Liner slider
(1st Moving Barrel)
Guide key
(The internal circumference
side of the connection barrel.)
Joint Tube Block
Zoom Control Tube Block Claw of the gear barrel