Basics Sequence Of Operations - Canon imageRUNNER 7095 Service Manual

7.4.2 Basics Sequence of Operations

The following shows the basic sequence of operations and timing of operations associated with the ma-
chine's control system:
Performs a series of charging operations to stabilize the drum potential.
Drum motor(M0)
Primary charging bias(DC)
Grid bias
Laser
Developing bias(AC)
Developing bias(DC)
Starting when the fixing assembly temperature reaches 193 deg C,
executes potential control every 10 min and 60 min.
Main power
switch ON
[1] The control panel power switch is turned on.
[2] The front door is opened/closed.
SERVICE MODE:
- COPIER> OPTION> BODY> PO-CNT (enabling/disabling potential control)
0: potential control OFF
1: potential control ON (default)
- COPIER> ADJUST> V-CONT> EPOTOFST (potential sensor offset value input)
If the DC controller PCB has been replaced or the RAM on the DC controller PCB has been initialized,
enter the value indicated on the service label.
- COPIER> ADJUST> V-CONT> VL-OFST (VL target potential offset value input)
If the DC controller PCB has been replaced or the RAM on the DC controller PCB has been initialized,
enter the value indicated on the service label.
- COPIER> ADJUST> V-CONT> VD-OFST (VD target potential offset value input)
If the DC controller PCB has been replaced or the RAM on the DC controller has been initialized, enter
the value indicated on the service label.
- COPIER> FUNCTION> DPC> OFST (potential sensor offset adjustment)
This mode item is part of the series of procedures that must be performed when the potential sensor unit
is replaced. It is not performed on its own.
193
WMUP
Potential stabilization sequence
Optimum grid
bias determined
Fixed value
10 min later
Potential control
for transparency
Potential
Start key ON
control
Fixing assembly temperature
(end of fixing assembly warm-up)
Uses the potential control mechanism that is used
when the main power switch is turned on.
WMUPR
Potential control
Optimum laser
output determined
F-7-5
After previous potential control,
executes potential control every hour.
60 min later
Potential
control
Start key ON
F-7-6
198
STBY
Potential control for
transparency mode
Optimum laser
output determined
1 hr later
Potential Potential
control control
Chapter 7
0010-8040
7-5