Canon NP6218 Service Manual page 82

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