Filter
Top Products
CHAPTER 3 ORIGINAL EXPOSURE SYSTEM
3-12
COPYRIGHT
©
1999 CANON INC. CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
E. Detecting an Error
As part of controlling the fluorescent lamp, checks are made of the following:
[1] Remaining life of the fluorescent lamp (See Figure 3-305.)
[2] Activation error
[3] Thermistor error
Figure 3-305 Checking the Remaining Life of the Fluorescent Lamp
Main power
switch ON
Control panel
power switch ON
Copy Start
key ON
Detection
INTR
LSTR
STBY STBY
Controlled to 70˚C
Controlled to 70˚C
SLEEP
SCFW SCRV
E225
E219
E225
E219
An error is indicated if the optimum
light intensity is not attained in 5
sec after activation.
The fluorescent lamp is assumed to
have reached the end of its life upon
detection of 170˚C or higher during
activation (requiring much power to
attain an optimum level of intensity).
The fluorescent lamp is assumed to have reached
the end of its life upon detection of 170˚C or higher
during activation (requiring much power to attain
an optimum level of intensity).
If an optimum light intensity
cannot be attained within 5
sec after activation.
Intensity sensor
output (FLDTCT)
Scanning lamp
(FL1)
Temperature sensor
output (FL-TH)