DSC-W520 - Sony Digital Camera Service Manual (repair manual). Page 23

DSC-W520

3-14

Mirror

Dust check

1. Viewing from the front lens

No visible dust inside the lens.

2. Shooting check 

2-1. Shoot the object with following conditions

- Object should be perfect white high brightness object. (Example; PTB1450 clear chart, etc)
- Shoot above object from a few centimeters with Pixel; Maximum size and Tele end.

2-2. Check the image on PC. Image should have no dust.

Focus Check

1. Preparation

- Camera installed re-assemble lens
- Test camera for comparing
- Chart (Printed PDF file at the same magnification)
- Tripod 
- Mirror (ex. CD)
- Memory Stick
- PC

2. Setting up to shoot

2-1. Paste the chart.

- Chart should be on the flat wall.
- Illuminance level in the chart should be the same.
- Make the tripod’s height and the center of the chart to the same 
height.

- Enough space needed for shooting

2-2. Set up the camera as follows;

- [P] mode
- [Maximum] size
- ISO lowest level
- Steady Shot [OFF]
- Flash [OFF]

2-3. Attach the camera on a tripod.

2-4. Align the positions of the camera and the chart as follows;

2-4-1. Set the zoom position of the camera at Wide end.
2-4-2. Attach the mirror(*) onto the center of the chart.

(*) The mirror should not tilt on the chart.

 

 

LCD display

2-4-3. Move(*) the camera with the tripod to display the chart on LCD as the following picture.

(*) Avoid the tilt of the camera face against the chart.

2-4-4. Align the camera position(*) to the center of the chart.

(*) Adjust the position of the tripod vertically and horizontally with referring to the reflected image.

2-4-5. Reconfirm the conditions of 2-4-3. and 2-4-4. If OK, remove the mirror.

3. Shooting 

3-1. Set to [Self-Timer] mode.
3-2. Take the shot by the camera installed re-assemble lens.
3-3. Take the shot by the test camera for comparing with the same condition.

Display the frame* like in this 
picture.
* Whole square frame should 
be displayed.  

 

Refer to the reflected image in the mirror.
Adjust the position so that the center of Lens part 
overlaps with the center of the chart.