Check Points - Canon NP6045 Service Manual

4. Check Points

a. Checking the Voltage of J111B-8 (LAON)
Check to make sure that the voltage between J111B-8 and J111B-5 (GND) on the DC
controller PCB is about 5 V while the scanner is moving forward and is 0 V during initial
rotation, while the scanner is moving in reverse, and during last rotation.
b. Intensity/AE Adjustment
Table 4-103 is a list of items that may be adjusted using the scanning lamp intensity
control circuit.
Service mode
3
Adjusts the
LIGHT _ 5 optimum expo-
LIGHT 5P sure for poten-
tial control
(intensity
adjustment for
copy density 5)
3 Adjusts the
GLEAM _ 5 optimum expo-
sure for non-
potential con-
trol (intensity
adjustment for
copy density 5)
3 AE slope
AE _ SLOP
COPYRIGHT © 1997 CANON INC.
Function
Intensity
Intensity
Intensity
Copy
density
Table 4-103
CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 4 IMAGE FORMATION SYSTEM
Adjustment
Copy
density
1 5 9
Copy
1 5 9 density
1V 5V Input
Remarks
If the setting is
increased in service
mode, the intensity
during copying
increases, decreasing
the copy density.
If the setting is
decreased in service
mode, the intensity
during copying
decreases, increasing
the copy density.
If the setting is
increased in service
mode, the intensity
during copying
increases, decreasing
the copy density.
If the setting is
decreased in service
mode, the intensity
during copying
decreases, increasing
the copy density.
If the setting is
increased in
adjustment mode,
copies of a newspaper
will be darker.
If the setting is
decreased in
adjustment mode,
copies of a newspaper
will be lighter.
4-9