Sony DSLR-A900 Service Manual page 24

<Cleaning Procedure for the OLPF>
1. Clean up the tip of CCD cleaning jig.
2. Set a camera to a cleaning mode.
3. Dab the tip of CCD cleaning jig at the OLPF, and pull up straight.
* Do not slide from right to left or up and down while dabbing.
4. Repeat "3" several times to clean up.
5. According to service manual, check if there is dirt on the CCD.
<ATTENTION>
If you cannot remove dirt with remedy above, cleaning by the following jig are used.
Soak a small amount of EE3310 (Liquid cleaner) after wrapping the cleaning cloth (J-6082-636-A) around the cleaning jig (J-
6082-635-A).
DSLR-A900_L2
Cut
Cleaning Cloth
(J-6082-636-A)
Cleaning Jig
(J-6082-635-A)
2-17E
OLPF
EE3310