20 February, 2001 USING SERVICE PROGRAM MODES
5-9
Service
Tables
2
Mode Number/Name Function/[Setting]
Toner Supply Mode921*
Selects the toner supply mode.
[0 = Sensor 1 / 1 = Sensor 2 (DFU) / 2 = Fixed 1 (DFU) /
3 = Fixed 2]
Under normal conditions this should be set to “0”.
You can temporarily change this to “3” if the TD sensor is
defective. Do not set to “1” or “2”, as these are for design
use only.
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6.9.6 Toner Density Control
Toner Supply Time922*
Adjusts the toner supply motor ON time for Sensor 1 and
Sensor 2 toner supply mode. Accordingly, this setting is
effective only if SP2-921 is set to “0” or “1”
[0.1 ~ 5.0 / 0.4 / 0.1 s/step]
Raising this value increases the toner supply motor ON
time. Set to a high value if the user tends to make many
copies having high proportions of solid black image areas.
☛
6.9.6 Toner Density Control
Toner Recovery Time923*
Adjusts the toner supply motor ON time used during toner
recovery from Toner Near End or Toner End. This setting
is effective only if SP2-921 is set to “0”
[3 ~ 60 / 30 / 1 s/step]
Since toner recovery is carried out in 3-second cycles, the
input value should be a multiple of 3 (3, 6, 9...).
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6.9.6 Toner Density Control
Toner Supply Rate925*
Adjusts the toner supply time for fixed toner supply mode.
This setting is effective only if SP2-921 is set to “2” or “3”.
[0 ~ 7 / 0]
t = 200ms, and settings are as follows
0 = t 4 = 12t
1 = 2t 5 = 16t
2 = 4t 6 = on continuously
3 = 8t 7 = 0 s
Raising this value increases the toner supply motor ON
time. Set to a high value if the user tends to make many
copies having high proportions of solid black image areas.
☛
6.9.6 Toner Density Control
Standard Vt926*
Adjusts Vts (the Vt value for new developer). The TD
sensor output is adjusted to this value during the TD
sensor initial setting process].
[0.00 ~ 5.00 / 2.40 / 0.01 V/step] DFU
This SP is effective only when SP2-921 is “0”, “1”, or “2”.
ID Sensor Control927*
Selects whether the ID sensor is or is not used for toner
density control.
[0 = No / 1 = Yes]
This value should normally be left at “1”. If the value is “0”,
dirty background may occur after long periods of non-use.
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