Canon 7086 Series Service Manual - page 262
Chapter 7
7-16
0: enables fuzzy control (default)
1: low humidity environment mode (pre-transfer charging current is lower than standard)
2: normal humidity environment mode
3: high humidity environment mode (pre-transfer charging current is higher than standard)
If set to '1' through '3', the control will be free of the readings of the environment sensor.
7.5.3.3 Pre-Transfer Charging Assembly Cleaning Mechanism
0010-8056
iR7105 / iR7095 / iR7086
F-7-22
Reference:
Timing of Cleaning
[1] if the surface temperature of the fixing roller is 100 deg C or less when the control panel power switch is turned on.
[2] when wire cleaning is executed in user mode.
[3] at the end of LSTR after making 2000 prints since previous wire cleaning
7.5.3.4 Others
0010-8058
iR7105 / iR7095 / iR7086
SERVICE MODE:
- COPIER> ADJUST> HV-TR> PRE-TR (pre-transfer charging current output adjustment 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.
ERROR CODE:
- E068 (pre-transfer charging output error)
The presence of over-current has been detected (POST/SEP_ERR=1), possibly caused by leakage.
Wire cleaner
Wire
Pre-transfer charging assembly
Pre-transfer charging
wire cleaning motor(M7)
rear direction
front direction
DC controller PCB
1
1
3
4
9
10
14
POST_W.C_BK
POST_W.C_FW
J504A
When '1', the wire cleaner moves toward the front.
When '1', the wire cleaner moves toward the rear.
2