Canon imageRUNNER ADVANCE C5500 Series Service Manual page 104

Related Service Mode
Collective adjustment of the secondary transfer ATVC paper allotted voltage:
(Level 2) COPIER > Adjust > HV-TR > 2TR-OFF
Display of the secondary transfer ATVC target current:
(Level 2) COPIER > Display > HV-STS > 2ATVC
Setting of the secondary transfer bias correction table:
COPIER > Option > FNC-SW > 2TR-TBLS
Adjustment of the paper trailing edge weak bias application length
(Level 2) COPIER > Adjust > HV-TR > B2TR-LNG: single color Bk
(Level 2) COPIER > Adjust > HV-TR > T2TR-LNG
Adjustment of the paper leading edge weak bias
(Level 2) COPIER > Adjust > HV-TR > T2TR-H51: Heavy 5, 1st side
(Level 2) COPIER > Adjust > HV-TR > T2TR-H52: Heavy 5, 2nd side
(Level 2) COPIER > Adjust > HV-TR > T2TR-H61: Heavy 6, 1st side
(Level 2) COPIER > Adjust > HV-TR > T2TR-H62: Heavy 6, 2nd side
(Level 2) COPIER > Adjust > HV-TR > T2TR-H71: Heavy 7, 1st side
(Level 2) COPIER > Adjust > HV-TR > T2TR-H72: Heavy 7, 2nd side
Adjustment of the paper leading/trailing edge weak bias current
(Level 2) COPIER > Adjust > HV-TR > WK-TGTC: single color Bk, coated paper
(Level 2) COPIER > Adjust > HV-TR > WK-TGTN: single color Bk, plain paper
(Level 2) COPIER > Adjust > HV-TR > WK-TGTH1: single color Bk, Heavy 1
(Level 2) COPIER > Adjust > HV-TR > WK-TGTH2: single color Bk, Heavy 2
■ Secondary Transfer Bias Control
In order to transfer the toner from the ITB onto paper, the voltage calculated by the secondary transfer ATVC control is applied
to the Secondary Transfer Outer Roller.
The secondary transfer bias (DC), which has been generated on the Secondary Transfer High-Voltage PCB (UN18), is applied
to the Secondary Transfer Outer Roller.
The bias value is determined by the measurement value of the Environment Sensor 2 (UN50) and the paper type.
Driving
Roller
■ ITB Displacement Correction Control
This control prevents ITB damage caused by ITB displacement.
This machine improves control of the amount of movement compared to conventional models by tilting the direction of moving
the back side of the Steering Roller (and Drive Roller), which direction was perpendicular to the belt surface in conventional
models.
This control is performed with the following two steps: "Steering home position search" and "ITB displacement correction".
Control description
Steering home position search
1. The position of the Steering Roller is detected by the Steering HP Sensor.
DC Controller PCB
Secondary Transfer High-Voltage PCB
90
2. Technology
UN1
UN18
DC
Secondary Transfer
Outer Roller