DOWNLOAD Sony SAL20F28 Service Manual ↓ Size: 854.58 KB | Pages: 47 in PDF or view online for FREE

Model
SAL20F28
Pages
47
Size
854.58 KB
Type
PDF
Document
Service Manual
Brand
Device
Digital Camera
File
sal20f28.pdf
Date
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4-1
SAL20F28 (2.8/20) (20mm F2.8)
4. ADJUSTMENTS
Note:
After the service repair, perform the adjustments referring to this section.
4-1.
PREPARATIONS
4-1-1. List of Service Tools and Equipments
• Variable Transformer (Output voltage: AC 100 V) (Note 3)
• Camera DSLR-A100
• Compact Flash (CF) Card (For image saving)
• Screen (Art paper)
• Tape Measure
• Plane Mirror (For SLRs)
• Adhesive bond (B-10): J-6082-612-A
• Color Calculator 2
Note:
Color Calculator 2 is downloadable from the ESI homepage.
Fig. 4-1-1
Ver 1.2  2007.05
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
Luminance box
J-6082-581-A
Chip-B for
universal wrench
J-6082-609-2
Universal wrench
J-6082-609-A
Chip-A for
universal wrench
J-6082-609-1
Name ring
wrench C (72mm)
J-6082-634-A
J-1
J-7
J-4
J-10
J-13
J-2
J-5
J-8
J-11
J-9
J-6
J-3
J-12
4-2
SAL20F28 (2.8/20) (20mm F2.8)
Note 1:
Personal Computer (PC)
(Color Calculator 2 installed)
OS:
Windows2000 Professional/XP
MEMORY:
40 M Byte or more recommended
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
4-3
SAL20F28 (2.8/20) (20mm F2.8)
4-1-2. Lens Adjustment Program
The lens adjustment program is required for the following check/adjustment.
4-5. LENS ROM CHECK
Prepare/start the Lens adjustment program with the following steps.
Equipment
• Personal Computer (PC)
• Camera DSLR-A100
• USB Cord With Connector
• Lens Adjustment Program
Note:
Lens Adjustment Program is downloadable from the ESI homepage.
1. Installation of the Lens Adjustment Program
For installation of the lens adjustment program, refer to the link “•  Preparing the DSLR-A100 adjustment program” described on the
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 camera to OFF, then turn the POWER switch to ON while pressing the shutter button halfway down
with pressed the 
 button of controller keys and MENU buttons.
4)
Check that the remaining number of recordable images on the LCD monitor is “BBBB”.
Note:
When “BBBB” is displayed, the camera activates in the adjustment mode.
5)
Start the lens adjustment program “LensAdjustment.exe”.
4-4
SAL20F28 (2.8/20) (20mm F2.8)
4-2.
APERTURE DIAMETER CHECK/ADJUSTMENT
4-2-1. Aperture Diameter Check
Note:
Perform the aperture diameter check in the state of the Fig.4-2-1 (only the decoration ring was removed), or completion of
assembling.
Fig.4-2-1
Equipment
• Luminance Box
• Camera DSLR-A100
• AE Master Lens
• Compact Flash (CF) Card (For image saving)
• Personal Computer (PC)
(Color Calculator 2 installed)
1. Preparations
Note:
Confirm the checking lens by complete. (The adjustment of focus brush is completed.)
1)
Install the CF card to the camera.
2)
Set the equipments, camera and master lens as shown 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:
EV12
Setting of Lens:
Focus:
Infinity end
Luminance box
 Luminance: EV12
Camera
 ISO: 100
 Exposure Mode: M
 Shutter Speed: 1/125
 Aperture: F5.6
 Focus Mode: MF
 Metering: Center weighted
 Preset white balance: Tungsten
 D-R: OFF
Master lens or checking lens
 Focus: Infinity end
Shoot the center of the luminance surface
Setting of Camera:
ISO:
100
Exposure Mode:
M
shutter Speed:
1/125
Aperture:
F5.6
Focus Mode:
MF
Metering:
Center weighted
Preset white balance: Tungsten
D-R:
OFF
Decoration Ring
Ver. 1.3  2008.01
The changed portions from
Ver. 1.2 are shown in blue.
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