Af Sensor Dust Check - Canon EOS 55 Service Manual

Part 3: Repair Information
4.11 AF
SENSOR DUST CHECK
To check the BASIS data output which can show
if
the sensor is dirty.
TOOLS:
Personal computer
RS-232C cable
HS-1/F
Adjustment software (stored on a work disk)
EF-8000
PREPARATION:
Set the camera at the light source without a lens attached to the camera and the
brightness of the light source set to LV12. (Be sure to shield the eyepiece from exter-
nal light.)
Light
Source
01
0
Shield
from light
Fig. 3-54 AF Sensor Dust Check
3-56