Detecting An Error - Canon GP605 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 GP605/605V REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
SCRV LSTR STBY
Controlled to 70˚C