Canon EOS D60, Service Manual

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1.7 Maintenance of Light Source
For digital cameras, maintaining the light source is very important for adjusting
the ISO sensitivity. With the EOS D60, the standard amount of light for each ISO
speed is set based on the LV12 light source.
* According to the ISO standard, ISO 100's standard exposure amount is
stipulated as 0.1 lux/sec. where the exposure amount (lux/sec.) is expressed in
lux (the light's brightness) and sec. (time of light radiation). Therefore, if you use
ISO 100 film, you can obtain the same result with the same amount of light
regardless of the film's manufacturer.
Required tools
•
Light source (EF8000, 5000)
•
Luminance meter BM-300, 3000
Procedure
1) Turn on the light source. Wait at least 10 minutes before starting the
measurement. While you wait, thoroughly clean the surface of the light source.
2) Use the luminance meter to measure the light source.
Required standard:
LV 9: 64 cd/m
2 (59.7 - 68.6 cd/m 2 )
LV 12: 512 cd/m 2 (477 - 548 cd/m 2 )
LV 15: 4096 cd/m
2
(3821 - 4389 cd/m
2
)
* The K value is 12.5, correctable /-0.1 EV.
3) If adjustment is necessary, adjust with the variable resistor. (see the manual of
EF8000, 5000)
Part 4: Electrical Adjustments
4-12
Do regular maintenance (data generation). (This is not necessary
each time you do the adjustment. However, be sure to do it when
the light bulb has been replaced or the location has been changed.)
The maintenance procedure is presented in a video called "Repair
Technique Basic 1, 2" (CY8-1310-007, 008 for Japanese and CY8-
1320-007, 008 for English).
CAUTION