5. Adjustments related to process control
Item
Conditions where the process control is required:
Remark
1
2
3
4
5
6
7
–
–
F
F
F
F
F
A. When a new machine is installed.
"4" differs in different destinations.
–
F
F
–
F
F
F
B. When the developer is replaced.
–
F
F
F
–
F
F
C. When the photoconductor is replaced.
–
–
–
–
–
F
–
D. When the process control sensor is cleaned/replaced.
–
–
–
–
–
F
–
E. When the marking sensor is cleaned/replaced.
–
F
F
–
–
–
F
F. When the dirt correction sensor is cleaned/replaced.
–
F
F
–
–
–
F
G. When the AE sensor is cleaned/replaced.
–
F
F
–
–
–
F
H. When the optical system is cleaned.
–
F
F
–
–
–
F
I. When the standard white board is cleaned.
F
F
F
–
–
–
F
J. When the high voltage output is adjusted.
Item
Sim No.
Content
1
Developing bias voltage/grid bias
voltage/drum current adjustment
8 – 1
8 – 2
8 – 3
8 – 4
8 – 6
8 – 7
2
AE adjustment level check and
adjustment
20
(Key operator code)
Check that the AE adjustment level is at the standard level. If not,
set it to the standard level.
3
AE sensor gain adjustment
47
The AE sensor gain is automatically adjusted.
4
Drum installation
Film wear counter and drum
sensitivity adjustment
24 – 7
26 – 7
The film wear counter is reset. The drum sensitivity is set.
5
Developer supply
Developer adjustment
25 – 2
The toner density reference value is set.
6
Drum marking/image density
sensor output check and
adjustment
44 – 2
44 – 3
Drum marking sensor/image density sensor output check
F
Drum marking sensor: 170
±
10 (Rough adjustment control
(VR-1) and minute adjustment control (VR-3)).
Refer to the figure below.
F
Process control sensor 815
±
15 (Rough adjustment control
(VR-2) and minute adjustment control (VR-4)).
Refer to the figure below.
If the value is outside the above range
7
Copy quality adjustment
46
Follow the exposure adjustment procedure.
@
(Note) When simulation 46 is executed, the dirt correction
reference is registered.
Therefore, before executing simulation 46, clean the optical
system and check and adjust the copy picture quality. (In all
modes.)
If simulation is cancelled without checking and adjusting in all
modes, the process control is not performed properly.
VR-2
VR-4
VR-1
VR-3
Japan
EX
Developing bias
–200
±
5V
MC (N)
–730
±
5V
–730
±
5V
MC (P)
–500
±
5V
–450
±
5V
MC (T/S)
–675
±
5V
–625
±
5V
TC
–1.2
±
3
µ
A IF – RI = 5
µ
A
SC (DC component)
+280
±
20V
8 – 23
