Defocus Data Check - Canon EOS 55 Service Manual

Part 3: Repair Information
4.12
DEFOCUS DATA CHECK
This procedure is used to check the AF focus adjustment.
TOOLS:
Personal computer
RS-232C cable
HS-1/F
Adjustment software (stored on a work disk)
Light
Tripod
AF reference chart, 16mm bar chart, and 45° chart
CONFIRMATION PROCEDURE:
I) Set the charts and camera as indicated
in AF Focus Adjustment (Section 4.10)
2) Select the F3 AF Adjustment Menu.
3) Focus with AF on the chart, and then
switch the lens to manual.
4) Select F4 Defocus Data Output. Switch
to the various charts. Focus with AF on
each chart, and check that the results
are within the listed limits.
AFDEF
I
Defocus data
I
outpt
Left (L3)
00. 00
CV(Ll)
00.00
CH(L2)
00. 00
Right (L4)
00. 00
5) If the standards cannot be met, replace
the AF Unit.
Press RETURN to AF MENU screen.
Table 3-2 Defocus Standards
AF Reference Chart 16mm Bar Chart 45° Bar Chart
CV CH L&R
CV CH L&R
CV
CH L&R
50mm //1.8
±0.03 ±0.03 ±0.04 ±0.03 ±0.06 ±0.08 ±0.12 ± 0.14 ±0.13
Tool lens
3-58