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Sony SAL28F28 - Wide-angle Lens - 28 mm, Service Manual

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Sony SAL28F28 - Wide-angle Lens - 28 mm Service Manual Download Page 9

2-2

SAL28F28 (2.8/28) (28mm F2.8)

2-1.

DISASSEMBLY

2-1-1. MIRROR TUBE BLOCK, FOCUS RING AND FRONT LENS HOLDER BLOCK

1

G1 Stopper Ring

2

Mirror Tube Block

4

Front Lens 

    Holder Block

3

Focus Ring

A

HELP03

FLANGE BACK 
ADJUSTMENT

HELP01

HELP02

B

5

Fixed Holding Tube

B

A

EXPLODED VIEW

HELP04

Note: 

Name ring wrench B (49 mm)

Remove the G1 stopper ring using the  
name ring wrench B (49 mm).

Name ring wrench B (49 mm):
J-6082-586-A

Summary of Contents for SAL28F28 - Wide-angle Lens - 28 mm

Page 1: ...nk Revision History Revision History How to use Acrobat Reader How to use Acrobat Reader Sony EMCS Co SAL28F28 2 8 28 28mm F2 8 Ver 1 1 2007 01 LENS FOR DSLR CAMERA 2007A0800 1 2007 01 Published by Kohda TEC 9 852 116 12 US Model Canadian Model AEP Model Chinese Model SAL28F28 2 8 28 28mm F2 8 ...

Page 2: ...1 75 Angle of view 2 1 54 2 The 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 3 0 3 1 3 Minimum focus is the shortest distance from the image sensor to the subject Maximum magnification 0 13 Minimum f stop f 22 Filter diameter mm 49 Dimensions maximum...

Page 3: ...ty 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 4 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 Error Code List 4 17 ...

Page 4: ...y 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 ...

Page 5: ...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 LINEWITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN THE PARTS LI...

Page 6: ...eration of the preset ring 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 diaphragm 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 ...

Page 7: ...Focus trouble Replace the defective part or apply the grease Check the coupler Check the outer barrel and focusing ring NG NG NG NG NG END OK Check the installation of the main flexibl unit Reinstall the main flexibl unit Check the focusing operation again Clean the pattern of the main flexible unit Replace the main flexible unit Check the focusing operation again ...

Page 8: ... 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 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...

Page 9: ...R BLOCK 1G1 Stopper Ring 2Mirror Tube Block 4Front Lens Holder Block 3Focus Ring A HELP03 FLANGE BACK ADJUSTMENT HELP01 HELP02 B 5Fixed Holding Tube B A EXPLODED VIEW HELP04 Note Name ring wrench B 49 mm Remove the G1 stopper ring using the name ring wrench B 49 mm Name ring wrench B 49 mm J 6082 586 A ...

Page 10: ...XPLODED VIEW 5 Coupler 7 Iris Control Block HELP10 9 Helcoid Unit HELP12 HELP11 HELP09 HELP05 3 Rear Light Interception Tube 4 Main Flexible Unit Lens Mount Block HELP06 1 Lens Mount Riveting Block 6 Rear Lens Holder Block 2 Main Spring HELP08 HELP07 APERTURE DIAMETER ADJUSTMENT 8 Leanear Guide Key ...

Page 11: ...tach the mirror tube block and fix it with three screws and washers tentatively 2 Perform the 4 2 1 Aperture Diameter Check 3 After the aperture diameter check is completed fix the hood unit with three screws applying the adhesive bond B 10 and washers as shown in the figure HELP Mirror Tube Block Apply the adhesive bond B 10 3 areas ...

Page 12: ... 28 of the front ornamental plate with range index and stick the front decoration plate onto the G1 stopper ring 2 Remove the masking tape of the front decoration plate Note Tolerance 2 5 1 mm Masking Tape Front Decoration Plate G1 Stopper Ring Range Index ...

Page 13: ...side of the focus scale window with the distance index on the focus scale window Tighten the three screws as shown in the figure tentatively 3 Perform the 4 4 2 Flange Back f F Adjustment 4 After the flange back adjustment is completed fix the focus ring with six screws applying the adhesive bond B 10 as shown in the figure Apply the adhesive bond B 10 6 areas Focus Tube Distance Index Focus Ring ...

Page 14: ...o portion screwed of the three screws and tighten them as shown in the figure HELP05 1 Attach the main flexible unit to the rear light shield barrel tube with two screws as shown in the figure 2 Affix the main flexible unit to flexible set tape as shown in the figure 3 Bend the main flexible unit to inside of rear light shield barrel tube fix with the flexible set tape in the arrow direction Note ...

Page 15: ...o the screwed portions of three screws shown in figure and tighten screws 3 Attach the ground spring to the rear light shield barrel tube and fix the main flexible unit with two screws Note Be careful not to tighten screws too strongly Confirm that the preset ring holding plate moves smoothly Main Spring Preset Ring Holding Plate Lens Mount Riveting Block Rear Light Shield Barrel Tube Apply the ad...

Page 16: ...of the lens mount reveting block 3 Turn counterclockwise the pin of iris control plate unit to close the iris 4 Attach the lens mount riveting block aligning the cut portion of preset ring lever with the pin of iris control plate unit and the coupler hole with the coupler HELP08 Oil O 20 J 6082 610 A Apply small amount of oil O 20 to the instruction portion of the main spring Apply the adhesive bo...

Page 17: ... Attach the pin of iris control plate unit so that it is inserted in the oblong hole near the coupler pivot of helicoid unit 4 Attach the aperture unit holding spring and check the operation of the iris feather unit Note When attaching the aperture unit holding spring insert the portion B first 5 After the aperture diameter adjustment is completed apply the adhesive bond B 10 to the instruction po...

Page 18: ...ner helicoid barrel and confirm that it rotates smoothly HELP12 Anti diffusion agent A 20 J 6082 611 A Adhesive bond B 40 J 6082 614 A Grease G 15 J 6082 619 A 1 Apply the grease G 15 and the anti diffusion agent A 20 to the instruction portions of the inner tube Note Be careful not to get the anti diffusion agent A 20 smeared to the portion A 3 4 1 2 Parallel Parallel Portion A Apply the grease G...

Page 19: ...emble the outer tube middle helicoid and inner tube and check the operation of the helicoid stiffness smoothness catching 6 Set the helicoid level as shown in the figure Note This level is in infinity position Apply the grease G 15 All circumference of threads Apply the grease G 15 All circumference of threads Middle Helicoid Apply the grease G 15 All circumference of threads Apply the adhesive bo...

Page 20: ...nd X mean standardized parts so they may have some difference from the original one Items marked are not stocked since they are seldom required for routine service Some delay should be anticipated when ordering these items The mechanical parts with no reference number in the exploded views are not supplied 10 2 691 944 01 SHEET HOLD SHEET 11 2 691 943 01 HOLD SHEET TAPE 12 2 693 084 01 RING OUTER ...

Page 21: ...44 01 STOPPER SCREW 59 2 691 960 01 MAIN SPRING 60 2 691 959 01 RING PRESET RING 61 2 684 234 01 PRESET RING HOLDING PLATE Ref No Part No Description 62 2 685 022 01 COUPLER 63 2 684 731 01 SCREW M1 6 X3 5 64 2 693 093 01 LINEAR GUIDE KEY 65 2 685 018 01 HOLD SCREW 66 A 1215 252 A HELICOID UNIT 67 A 1197 684 A PLATE UNIT IRIS CONTROL 68 A 1197 686 A FEATHER UNIT IRIS 69 2 693 070 01 APERTURE UNIT ...

Page 22: ...8 28mm F2 8 3 1 3 FRONT LENS HOLDER BLOCK AND REAR LENS HOLDER BLOCK Ref No Part No Description 101 A 1197 689 A BLOCK FRONT LENS HOLDER LEAD FREE 102 A 1197 690 A BLOCK REAR LENS HOLDER LEAD FREE 101 102 G1 G2 G3 G4 G5 ...

Page 23: ...L INSTRUCTION SPANISH US CND AEP 2 685 159 51 MANUAL INSTRUCTION DUTCH AEP 2 685 159 61 MANUAL INSTRUCTION SWEDISH AEP 2 685 159 71 MANUAL INSTRUCTION ITALIAN AEP 2 685 159 81 MANUAL INSTRUCTION PORTUGUESE AEP 2 685 159 91 MANUAL INSTRUCTION RUSSIAN AEP 2 685 160 11 MANUAL INSTRUCTION TRADITIONAL CHINESE SIMPLIFIED CHINESE AEP CH 2 685 160 21 MANUAL INSTRUCTION KOREAN ARABIC AEP Abbreviation CH ch...

Page 24: ...te Color Calculator 2 is downloadable from the ESI homepage Fig 4 1 1 20 30 40 50 60 70 80 90 0 10 Personal computer Note 1 AE master lens J 6082 597 A Flange back gauge 43 50mm J 6082 608 A Flange back tester J 6082 606 A A mount attachment J 6082 607 A Lens test projector J 6082 605 A Note 3 1000 mm Collimator 110V J 6082 604 A 240V J 6082 604 B Note 2 USB cord with connector 1 833 062 11 Lumina...

Page 25: ...ed Hard disk free area 15 M Byte or more recommended USB terminal Standard equipment Graphics 32 000 colors or more recommended VGA monitor Note 2 Attach the chart to the 1000 mm collimator as shown in Fig 4 1 2 Fig 4 1 2 Note 3 Connect the variable transformer Output voltage AC 100 V to the lens test projector Align the marks 1000 mm collimator Chart ...

Page 26: ...top cover of the camera DSLR A100 service manual 9 852 130 51 Note Store the lens adjustment program LensAdjustment exe and related file AlphaLensAdjust txt in the folder that contains the DSLR A100 adjustment program DSLRadj_cs exe 2 Start the Lens Adjustment Program 1 Connect the camera and PC with the USB cord with connector 2 Set the mode dial of camera to M 3 Turn the POWER switch of the came...

Page 27: ...wn in Fig 4 2 2 Fig 4 2 2 3 Shoot the images under the following conditions and save them Note Shoot the center of the luminance surface three times with the master lens and checking lens Setting of Luminance box Luminance EV11 Setting of Lens Focus Infinity end Setting of Camera ISO 100 Exposure Mode M shutter Speed 1 125 Aperture F5 6 Focus Mode MF Metering Center weighted Preset white balance T...

Page 28: ... the Color Calculator 2 Fig 4 2 3 2 Read the image from the file menu Fig 4 2 4 3 Set the Color Calculator 2 as follows Measured value display Display menu RGB L a b Measuring method Display menu Center Single Area Fig 4 2 5 Color space Edit menu sRGB Fig 4 2 6 Area size for calculate Edit menu Option 256 256 Pixels Fig 4 2 7 ...

Page 29: ...shoot with checking lens b Fig 4 2 8 3 Checking Method 1 Calculate aperture error using the following formula and check that the aperture error is within the specification Aperture error Average G value of master lens a Average G value of checking lens b Specification Aperture error 0 12 2 When the aperture error is out of specification perform 4 2 2 Aperture Diameter Adjustment Calculate button C...

Page 30: ...or image saving Personal Computer PC Color Calculator 2 installed Adhesive bond B 10 1 Adjustment Method 1 Disassemble or assemble the checking lens into the state of Fig 4 2 9 Fig 4 2 9 2 Remove the adhesive bond fixing the aperture unit holding spring Fig 4 2 10 Aperture Unit Holding Spring Adhesive bond Adhesive bond Front Lens Holder Block ...

Page 31: ...ompleted apply the adhesive bond B 10 as shown in the Fig 4 2 13 Fig 4 2 13 6 Assemble the lens completely 7 Perform 4 2 1 Aperture Diameter Check and repeat 4 2 1 Aperture Diameter Check and 4 2 2 Aperture Diameter Adjust ment until the aperture error is within the specification Set the preset ring at the open aperture position Preset lever Adhesive bond Aperture Unit Holding Spring Adhesive bond...

Page 32: ... 8 to 1 16 Table 4 3 1 1 Perform the following steps 1 to 3 and incorporate the internal lenses of the lens test projector according to the checking focal length 1 Open the lid of the lens test projector 2 Pull up and turn the fixed levers on the right and left sides of the lens test projector 3 Remove or insert the lens Note Be sure to have the right position and direction of the lens Fig 4 3 1 L...

Page 33: ...ON Fig 4 3 2 4 Turn the distance tube of the checking lens until the chart image projected on the screen is the sharpest at the center y 0 5 Set the plane mirror to the center of the projected image y 0 and adjust the projector position so that the mirror reflects the light to the center of the lens Distance Lens test projector Chart Fan switch Lamp switch Plane mirror Screen A mount attachment Ch...

Page 34: ...r 4 lines which appears on screen when focus is beyond maximum revolving power Do not confuse spurious resolution for the smallest pitched lines Fig 4 3 4 4 Check that the all readings y 0 saggital S and meridional M at y 15 is within the specification of the Table 4 3 2 When the specification is not satisfied perform the following procedure Replace the front lens holder block or rear lens holder ...

Page 35: ...nt attachment and hold them together 4 Turn the focusing knob of the flange back tester so that fine scratches on the flange back gauge 43 50mm is the sharpest Note Turn the knob in the direction of the arrow of Fig 4 4 2 for correct reading Fig 4 4 2 5 Turn the scale ring of the dial gauge until the long pointer indicates 0 Note This position is the flange back f F 43 5 mm Memorize the position o...

Page 36: ...he chart center Refer to Fig 4 4 4 Note Figure shows example The cause depends on individual lens Fig 4 4 4 4 Calculate the flange back f F of the checking lens using the following formula and check that the specification of the Table 4 4 1 is satisfied Flange back f F of the checking lens Flange back gauge Number of short pointer revolution Reading of long pointer Specification Focal length f F m...

Page 37: ...er chart image check is not required 4 Turn the focus ring of the checking lens until red and green color areas are equal on the chart while looking through the microscope Note If in focus point cannot be obtained even through the focus ring is fully turned perform the following steps 1 to 4 and shift the position of the focus ring Refer to Fig 4 4 6 1 Set the focusing ring to the infinity stop po...

Page 38: ... helicoid Refer to Fig 4 4 7 6 Tighten the six screws applying the adhesive bond B 10 to the tip of screws Fig 4 4 7 7 Check that the focus ring moves smoothly from minimum distance to infinity and perform 4 4 1 Flange Back f F Check again Focus Ring Holding Plate Distance Tube Apply the adhesive bond B 10 Apply the adhesive bond B 10 Apply the adhesive bond B 10 ...

Page 39: ...t the checking lens to the camera 2 Start the lens adjustment program LensAdjustment exe referring to 4 1 2 Lens Adjustment Program Fig 4 5 1 2 Checking Method 1 Click the Connect button on the lens adjustment program Note Click the End button to disconnect the USB connection then lens adjustment program will terminate 2 Check that the display of Lens Code and Model Name is correct Note Focus posi...

Page 40: ...ync with the number of check pattern Error No Lens Lens is not connected correctly Error Unknown Lens Unidentified lens is connected Communication Error Code E600 Communication error with the camera Code F000 Input data error to DLL file Code F100 Setting error of USB port Code 2531 Communication error of main signal on the camera ...

Page 41: ...pplied to the Service Manual depending on the date of issue Switching a page To move to the first page click the To move to the last page click the To move to the previous page click the To move to the next page click the Reversing the screens displayed once To reverse the previous screens operation one by one click the To advance the reversed screens operation one by one click the Application to ...

Page 42: ...on History Reverse SAL28F28 2 8 28 28mm F2 8 Ver 1 0 1 1 Date 2006 08 2007 01 History Official Release Revised 1 Contents Change of Repair Parts Section 2 Section 3 Section 4 S M Rev issued Yes 985211612 pdf ...

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