Flange To Focal Plane Distance (Ffd) Adjustment - Canon EOS D60 Service Manual

Part 3: Repair Information

3.3 Flange to Focal Plane Distance (FFD) Adjustment

CAUTION
<Purpose>
The distance between the lens mount and surface of the CMOS must be
adjusted to the specified FFD for the EOS camera / EF lens system. The
surface of the CMOS is not accessible, so the "washer plane" where the CMOS
unit mounts to the body is used instead.
* The distance between the washer plane and the CMOS sensor plane cannot
be adjusted by service. Service parts are pre-adjusted at the factory.
<Specifications>
The distance between mount plane and the washer plane is measured using
the dedicated tool, and must be 41.30 ± 0.02 mm.
Parallelism: 0.04 mm or less
<Tools>
• Digital micrometer
<Preparation>
1) Set the mount fastening tool to the digital micrometer and reset the meter so
that the reference plane of the mount becomes "0".
2) Attach the mount fastening tool to the lens mount.
Perform the FFD Adjustment when the mirror box unit or mount is
replaced.
No adjustment is required for the CMOS sensor service parts (pre-
adjusted at the factory).
Perform the FFD Adjustment when tilt focus error occurs when the
EOS-D60 receives shock such as being dropped.
set to "0"
0.000
Digital Micrometer
Fig. 3-26
• Mount Fastening Tool (CY9-1547-000)
CY9-1547-000
3-26