Detecting An Error - Canon ImageRunner 600 Service Manual

CHAPTER 3 ORIGINAL EXPOSURE SYSTEM
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
E219
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).
E225
If an optimum light intensity
cannot be attained within 5
sec after activation.
Main power
switch ON
Detection
Intensity sensor
output (FLDTCT)
Scanning lamp
(FL1)
Temperature sensor
output (FL-TH)
Figure 3-305 Checking the Remaining Life of the Fluorescent Lamp
3-12
COPYRIGHT © 1999 CANON INC.
Control panel
power switch ON
SLEEP
Controlled to 70˚C
E225
An error is indicated if the optimum
light intensity is not attained in 5
sec after activation.
E219
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).
Copy Start
key ON
STBY INTR SCFW
CANON imageRUNNER 600 REV.1 JAN. 2000 PRINTED IN U.S.A.
SCRV LSTR STBY
Controlled to 70˚C