Sony SAL50M28, MACRO 2.8/50, 50mm F2.8 Macro Service Manuals
SERVICE MANUAL
SAL50M28
(MACRO 2.8/50) (50mm F2.8 Macro)
Ver 1.1 2007.02
Revision History
Revision History
How to use
How to use
Acrobat Reader
Acrobat Reader
Link
Link
SPECIFICATIONS
US Model
Canadian Model
AEP Model
Chinese Model
DISASSEMBLY ADJUSTMENTS
SERVICE NOTE
• About the Lens Test Projector
REPAIR PARTS LIST
LENS FOR DSLR CAMERA
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
Sony EMCS Co.
2007B0800-1
© 2007.02
Published by Kohda TEC9-852-101-12
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)
75
*1The value for equivalent 35mm-format focal length is based on Digital Single Lens Reflex Cameras equipped with an APS-C sized image sensor.
Lens groups elements
6-7
Angle of view 1 *
47°
Angle of view 2 *
32°
*2The value of angle of view 1 is based on 35mm-format cameras, and that of angle of view 2 is based on Digital Single Lens Reflex Cameras
equipped with an APS-C sized image sensor.
Minimum focus (m (feet)) *
0.2 (0.65)
*3Minimum focus is the shortest distance from the image sensor to the subject.
Maximum magnification (
1
Minimum f-stop
f/32
Filter diameter (mm)
55
Dimensions (maximum diameter
Approx. 71.5 × 60 (2 13/16 × 2 3/8)
Mass (g (oz.))
Approx. 295 (10 3/8)
Included items
Lens (1), Front lens cap (1), Rear lens cap (1), Set of printed documentation
2
2
3
××
×)
××
××
× height) (mm (in.))
××
Designs and specifications are subject to change without notice.
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
— 2 —
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. Safety 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 ······················································3-8
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. Flange Back (f’F) Check/Adjustment ·························· 4-12
4-5. Lens ROM Check ·························································4-16
4-6. Brush Position Check/
Adjustment and Pattern Check ····································· 4-17
4-7. Error Code List ····························································· 4-20
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
— 3 —
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.
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
1-1
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.
Danger of explosion if battery is incorrectly replaced.
CAUTION
Replace only with the same or equivalent type.
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.
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.
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
1-2
Ver 1.1 2007.02
1-5. TROUBLESHOOTING
1-5-1. Aperture Trouble
Aperture trouble
Function NG F No. NG
NG
Replace the defective part.
Replace the defective part.
Check operation of
the preset ring.
OK
Check operation of the
aperture control block.
NG
Perform the aperture
diameter adjustment.
(See page 4-7.)
OK
Perform the aperture
NG
diameter check.
(See page 4-4.)
Check operation of the
preset ring, and replace
the defective part.
OK
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
1-3
Perform the aperture
diameter check.
(See page 4-4.)
OK
END
NGNG
1-5-2. Foucus Trouble
Focus trouble
Function NG Position NG
Replace the defective part
or apply the grease.
Check the coupler and
gear block.
OK
Check the fixed holding
tube block and
fixed barrel unit.
NG
Replace the defective part
or apply the grease.
OK
NGNG
Adjust the position, or replace
the A encoder brush.
NG
of the main flexible block.
Clean the pattern of the
main flexible block.
Check the position
and deformation
at the tip of the
A encoder brush.
OK
Check pattern
OK
NG
Check the operation
again.
OK
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
1-4
Replace the
main flexible block.
Perform the
brush position
check/adjustment.
(See page 4-17.)
OK
END
NG
Ver 1.1 2007.02
NOTE FOR REPAIR
2. DISASSEMBLY
• 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.
UNIVERSAL WRENCH
In case of the following notches or holes are located in the lens block, etc during disassembling/
assembling the lens, Use the universal wrench.
Notches Holes
How to Use
Universal wrench
J-6082-609-A
Chip-A for
universal wrench:
J-6082-609-1
Cut and remove the part of gilt
which comes off at the point.
(Be careful or some
pieces of gilt may be left inside)
Chip-B for
universal wrench:
J-6082-609-2
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.
Chip-A
Match the universal wrench
to the width of holes or notches.
Fixed screw
Chip
Fixed screw
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
Universal wrench
Chip-B
Chip
Chip-A
Notches
Chip-B
Holes
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
2-1
2-1. DISASSEMBLY
2-1-1. FRONT LENS BARREL AND MOUNT RIVETING BLOCK
EXPLODED VIEW
HELP02
4 Rear Light
Shield Barrel
HELP03
5 Mount
Riveting
Block
3 Main Flexible Block
A
HELP05
7 Coupler
Note:
Attach the decollation ring after cleaning the
attaching surface of the middle barrel.
6 Back Adjustment
Washer
FLANGE BACK
ADJUSTMENT
HELP01
A
HELP04
FLANGE BACK
ADJUSTMENT
Note:
Remove the front light shield barrel
using the name ring wrench A (49mm).
Name ring wrench A (49mm):
J-6082-586-A
Name ring wrench A (49mm)
2 Front Lens
Barrel
HELP38
(See Page 2-3.)
1 Front Light
Shield Barrel
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
2-2
2-1-2. MF OPERATION RING AND TORQUE RING BLOCK
EXPLODED VIEW
Note:
Select the friction spring and torque ring spring adjust
according to the rotation load of the torque ring as follows.
1. Use the friction spring B and torque ring spring adjust washer (1 piece) as reference.
2. Adjust the torque of the torque ring by changing the number of the
torque ring spring adjust washer (0 to 6 pieces).
3. If the rotation remains light even adjust the torque by torque ring spring adjust washer,
Replace the friction spring B to the friction spring A and adjust again.
HELP06
Friction spring A
Friction spring B
(T = 2.05 mm): 2-684-266-01
(T = 1.32 mm): 2-684-267-01
1 SW Flexible and Main Flexible Block
HELP09
6 Fixed Holding
Tube Block
(See Page 2-4.)
A
B
B
A
5 Anti Slip Spring
2-1-3. FIXED HOLDING TUBE BLOCK
Note:
Select the gap adjust washer according to the rotation load of the focus
range switch knob as follows.
1. Install the gap adjust washer-B and check the rotation.
2. If the rotation is heavy, replace with the gap adjust washer-A.
If it is largely wobbly, replace with the gap adjust washer-C.
3. If the rotation remains heavy even with the gap adjust washer-A,
remove the washer and attach the focus range switch knob.
EXPLODED VIEW
Washer-A
Washer-B (T = 0.1 mm): 2-684-219-01
Washer-C (T = 0.2 mm): 2-684-220-01
(T = 0.05 mm): 2-684-218-01
HELP15
2 Limiter Stopper Plate Block
HELP14
1 Focus Range Switch Knob
HELP14
3 FH Button Base
A
HELP16
HELP18
HELP17
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
A
4 Click Plate
5 SW Flexible
2-4
2-1-4. FIXED BARREL UNIT AND MAIN FLEXIBLE BLOCK
A
A
C
D
D
C
B
B
(See Page 2-6.)
EXPLODED VIEW
1 Gear Cover
8 Fixed Barrel Unit
3 Linear Guide Key
2 Gear Block
HELP19
HELP23
HELP24
HELP25
HELP20
6 Focus Guide
7 Focus
HELP22
4 Guide Pin
5 Middle Tube Block
HELP21
HELP21
Stopper
HELP27
HELP28
HELP29
HELP24
HELP29
HELP26
9 Main Flexible Block
BRUSH POSITION
ADJUSTMENT
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
2-5
2-1-5. FOCUS CAM RING AND IRIS JOINT RING RIVETING BLOCK
1 Large 2 Group Lens Block
HELP31
6 Aperture Operating Ring Holding
7 Retainer and Steel Ball
8 Iris Joint Ring Riveting Block
HELP32
2 Large 3 Group Lens Block
EXPLODED VIEW
Note:
Do not remove the aperture
operating ring holding, retainer,
steel ball and iris joint ring riveting
block as possible.
HELP33
C
B
A
(See Page 2-7.)
4 Iris (Inner) Tube Block
C
A
B
HELP30
3 Guide Pin
HELP30
5 Focus Cam Ring
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
2-6
2-1-6. IRIS (INNER) TUBE BLOCK
5 Aperture Connect
Barrel Unit
EXPLODED VIEW
1 Guide Pin
2 Large 1 Group Lens
Block
6 Aperture Linkage Fork
3 1st Cam Ring Hold Ring
4 First Cam Ring Adjust Washer
7 Aperture Operation Block
HELP37
HELP34
HELP35
HELP36
APERTURE
DIAMETER
ADJUSTMENT
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
2-7
HELP
Note for assembling and grease applying positions are shown.
HELP01
1. Install the front lens barrel to the aperture inner barrel (Temporary installation).
Aperture Inner Barrel
Front Lens Barrel
2. Attach the friction sheet C to the shaded area of the front lens barrel.
Aperture Inner Barrel
Reference line
Projection part
Front Lens Barrel
Friction Sheet C
HELP02
Adhesive bond (B-40): J-6082-614-A
Apply the adhesive bond (B-40) to the three screws and tighten them as shown in the figure.
Apply the
Apply the
adhesive
bond (B-40)
adhesive
bond (B-40)
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
HELP
HELP03
Grease (G-85): J-6082-626-A
Anti-diffusion agent (A-20): J-6082-611-A
Adhesive bond (LOCTITE 460) (Note)
Note: Use adhesive bond (LOCTITE 460) or an equivalent article.
Don’t use what becomes white after drying like a quick-drying glue.
1. Apply the grease (G-85) and anti-diffusion agent (A-20) to the instruction part of the mount riveting block.
2. Apply the adhesive bond (LOCTITE 460) to the screw and tighten it as shown in the figure.
Apply the grease
(G-85) (Claw portion)
Apply the adhesive
bond (LOCTITE 460)
Apply the anti-diffusion agent
(A-20) (All circumferences)
HELP04
Oil (O-20): J-6082-610-A
Apply the oil (O-20) to the instruction part of the main SP and attach it.
Apply the oil (O-20)
HELP05
Grease (G-85): J-6082-626-A
Apply the grease (G-85) to the instruction part of the coupler as shown in the figure.
Apply the
grease
(G-85) (Shaft and gear portion)
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
HELP
HELP06
1. Attach the flexible substrate setting tape E onto the linear guide key.
2. Solder the SW flexible to the main flexible block as shown in the figure.
3. Cut the polyester tape for 6×12 mm, attach the polyester tape onto the solder parts to cover entirely.
Polyester Tape
SW Flexible
Main Flexible Block
Flexible Substrate Setting
Tape
Linear Guide Key
HELP07
Grease (G-85): J-6082-626-A
Adhesive bond (B-40): J-6082-614-A
1. Apply the grease (G-85) to the instruction part of the slipping lever block.
2. Apply the adhesive bond (B-40) to the three screws.
Apply the grease (G-85)
Slipping Lever Block
MF Operating Ring
Apply the
adhesive
bond (B-40)
Apply the
adhesive
bond (B-40)
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
HELP
HELP08
Grease (G-15): J-6082-619-A
Adhesive bond (B-10): J-6082-612-A
1. Install the MF operation ring so that the slipping lever block fit into the groove of the MF operation ring. After installation, ensure the
three pinch lever assemblies are securely fit it.
Clip Lever
MF Operation Ring
2. Loosen the two screws, then reposition the slipping lever block so that the MF operation ring can be installed smoothly.
3. After adjustment, apply the adhesive bond (B-10) to the two screws.
Two screws
Apply the
adhesive
bond (B-10)
Slipping Lever Blcck
It shifts and adjusts to right and left.
Apply the
adhesive
bond (B-10)
4. Apply the adhesive bond (B-10) and grease (G-15) to the instruction part of the anti slip spring as shown in the figure.
Apply the grease (G-15)
(Slide portion of the anti slip spring)
Apply the
adhesive
bond (B-10)
(Screw portion)
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
HELP
5. Align the projection of the torque ring block and the groove of the focus ring as shown in the figure, and attach it.
Focus Ring
Groove
Projection part
6. Check wobbles of the three pinch lever assemblies. Then use the adjustment screw for adjustment. (Make sure the float ring does not
rotate accordingly when turning the torque ring by any slipping lever block.)
Float Ring
Torque Ring
Adjustment Pin
Slipping Lever Block
A adjustment pin is turned
and wobbles is adjusted.
HELP09
Adhesive bond (B-40): J-6082-614-A
Apply the adhesive bond (B-40) to the four screws.
Apply the
adhesive
bond (B-40)
Apply the
adhesive
bond (B-40)
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
HELP
HELP10
Adhesive bond (LOCTITE 460) (Note)
Note: Use adhesive bond (LOCTITE 460) or an equivalent article.
Don’t use what becomes white after drying like a quick-drying glue.
1. Apply the adhesive bond (LOCTITE 460) to the instruction part of the torque ring.
2. Attach the focus operaion ring guide nut aligning the opening with the torque ring.
Torque Ring
Apply the
adhesive
bond
(LOCTITE 460)
Focus Operation Ring Guide Nut
Apply the
adhesive
bond (LOCTITE 460)
HELP11
Grease (G-35): J-6082-621-A
Apply the grease (G-35) to the instruction part as shown in the figure.
Note: If the rotation of MF operation ring is heavy, remove the pinch distance adjust washer A.
Torque Ring
Apply the
grease (G-35)
Slipping Lever Block
Float Ring
Pinch Distance Adjust Washer A
HELP12
Anti-diffusion agent (A-20): J-6082-611-A
Apply the anti-diffusion agent (A-20) to the instruction part of the torque ring holder.
Apply the anti-diffusion agent
(A-20) (All circumference)
SAL50M28 (MACRO 2.8/50) (50mm F2.8 Macro)
HELP
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