Detecting The Toner Level And Controlling Toner Supply - Canon iR5055 Series Service Manual

The following signals are used in association with the developing bias control mechanism:
[1] Developing DC bias current control signal; controls the DC component of the developing bias generated by the high-voltage power supply PCB.
[2] turns on/off the developing bias current output.
SERVICE MODE:
COPIER>ADJUST>DEVELOP>BIAS
(entering developing bias)
Enter the value indicated on the service label if you have initialized the DC controller PCB.
setting range: 0 (darker) to 600 (lighter)
COPIER> ADJUST> DEVELOP> HVT-DE
(entering offset value for developing high-voltage output of high-voltage unit)
Enter the value indicated on the label attached to the new high-voltage unit if you have replaced the DC controller PCB or initialized the RAM on the DC controller
PCB.
setting range: -100 (lighter) to +100 (darker)
COPIER> ADJUST> DEVELOP> D-HV-DE
(entering offset value for developing high-voltage output of DC controller PCB)
Enter the value indicated on the label attached to the DC controller PCB if you have replaced the DC controller PCB or initialized the RAM on the DC controller
PCB.
setting range: -100 (lighter) to +100 (darker)
COPIER> ADJUST> V-CONT> DE-OFST)
(adjusting VDC for copier)
COPIER> ADJUST> V-CONT> DE-OFS-P)
(adjusting VDC for printer)
Enter the value indicated on the service label if you have initialized the RAM on the DC control PCB.

7.7.3 Detecting the Toner Level and Controlling Toner Supply

iR5065 / iR 5055 / iR5075 / iR5075N / iR5065N / iR5055N
The following shows the components associated with the toner supply control system:
[1] Toner bottle
[2] Hopper assembly
[3] Toner stirring plate
[4] Toner feedscrew
[5] Toner feed pipe
[6] Developing assembly
M9: Hopper stirring motor
M10: Toner supply motor
TS1: Developing assembly toner level sensor
TS2: Inside hopper toner level sensor
DC-CON: DC controller (components used to detect level of remaining toner)
HVT_DEV_BIAS
_DC [1]
HVT_DEV_BIAS
_DC [2]
[1] M10
TS2
TS1
AC output 1200Vpp
F-7-24
[2] HOP_BOTTLE
_ON[1]
M9
[3]
[4]
[6]
DEV_TONER_SENSOR[4]
F-7-25
Developing cylinder
J103B
DC-CON
Chapter 7
0015-4501
7-15