Toshiba V Series - 4.1 Registering the DN311

52 TC-net 100 Installation and Wiring Manual
Appendix C Cleaning Procedure for Optical Connectors
C
(3) Hold the acetone-wet lens cleaning paper on the end face of the optical connector
plug, and rub it clean as if by scratching with the thumbnail.
Rub it hard so a rubbing sound may be heard.
Figure C-5