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bizhub C4000i/C3300i
Vdc-C
Vdc-M
Vdc-Y
Vdc-K
Vg-C
Vg-M
Vg-Y
Vg-K
LD Light Value (C, M, Y, K)
Charging DC current valve
Charging AC Output Value 1
Vpp-C1
Vpp-M1
Vpp-Y1
Vpp-K1
Charging AC Output Value 2
Vpp-C2
Vpp-M2
Vpp-Y2
Vpp-K2
12.1.2 Level History 1
TCR-C
TCR-M
TCR-Y
TCR-K
IDC
Middle heat temperature
Medium Heating Temperature
Heat edge temperature
• Shows the developing bias value of each color of toner during print image formation.
• Standard values: around -800 to 0
• The specific numeric values vary with different imaging units. (The values incorporate corrections to
match the proper density after image stabilization.)
* As a guide, the image density tends to be higher with large numeric values and lower with small
numeric values.
• Relevant components: Imaging unit, high voltage unit (HVPS)
• Shows the grid voltage value of each color of toner during print image formation.
• Standard values: around -1600 to 0
• The specific numeric values vary with different imaging units. (The values incorporate corrections to
match the proper density after image stabilization.)
* As a guide, the image density tends to be higher with large numeric values and lower with small
numeric values.
• Relevant components: Imaging unit, high voltage unit (HVPS)
• Shows the LD light value of each color of toner during print image formation.
• Standard values: around 1750 to 3500
* For your information, photoconductor durability tends to be aggravated and fine line width tends to
be broader at higher values and characters tend to be faint at lower values.
• Relevant components: PH unit, imaging unit
• Shows the DC current value applied to the charging roller of each color of toner during print image
formation.
• Standard values: around 0 to 150
• Relevant components: Imaging unit, high voltage unit (HVPS)
• Shows the AC voltage value applied to the charging roller of each color of toner during print image
formation.
• Standard values: 0 (fixed)
• Relevant components: Imaging unit, high voltage unit (HVPS)
• Shows the current value applied to the charging roller of each color of toner during print image
formation.
• Standard values: 0 (fixed)
• Relevant components: Imaging unit, high voltage unit (HVPS)
• Shows the T/C ratio. (in 0.01 % increments)
• Standard value: 5 to 8 %
• For your information, foggy background tends to occur at higher values and low image densities tend
to occur at lower values.
• Relevant components: TCR sensor
• Shows the IDC bare surface output value. (in 0.01 V increments)
• It should normally be around 3.0 V.
• The output range is 0 V to 3.4 V.
• Relevant components: IDC sensor, transfer belt unit
• Shows the temperature of the fusing unit. (in 1 °C increments)
• Relevant components: Fusing unit
L TROUBLESHOOTING > 12. IMAGE QUALITY PROBLEM
L-84
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