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■ Input Signals from the DC Controller to the Composite Power Supply PCB
*ON duty ratio of FLOW signal (in relation to 1kHz):
40% or more ................................ON I
less than 40% ..............................ON II
Table 4-101
■ Half Pre-Heating Control (between press on Power switch and press on Copy Start
key; part of scanner reverse travel)
Figure 4-106
■ Full Pre-Heating Control (initial rotation, last rotation, part of scanner reverse travel)
Figure 4-107
COPYRIGHT
©
1997 CANON INC. CANON NP6218 REV. 0 MAY 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
4-6
FLON signal
FLPRHT signal
OFF
5KHz
5V
0V
25.9%
Duty ratio (5 kHz)
Filament voltage
Half preheating
25.9 %
2.5Vrms
Full preheating
60 %
4.5Vrms
Fluorescent lamp
ON I*
44.4 %
3.6Vrms
Fluorescent lamp
ON II*
55 %
4.1Vrms
FLON signal
FLPRHT signal
OFF
5KHz
5V
0V
60%