Ricoh Aficio FT4027, Service Manual

Page: 572 / 685

Mode No. Function Settings
2-208-001
Toner Supply
Mode Selection
† Selects the toner supply mode.
In many cases, the machine will change
the toner supply mode automatically if
either the TD or ID sensor become
unreliable. However, sometimes it does
not.
If the TD sensor fails, you can select
fixed supply mode as a temporary
measure.
If the ID sensor fails, you can select TD
sensor supply mode.
After repairing the machine, check
whether the toner supply mode has gone
back to the detect supply mode. 1: TD sensor
supply mode
2: Fixed supply
mode
3: Detect
supply mode
2-208-002
Toner Supply
Ratio
(TD Sensor
Supply Mode) † Selects the toner supply ratio for TD
sensor supply mode.
For example, if the user normally makes
copies of originals that are about 7%
black, select the 7% setting for best
results. 1: 7%
2: 15%
3: 30%
4: 60%
2-208-003
Toner Supply
Ratio
(Fixed Supply
Mode) † Selects the toner supply ratio for Fixed
Supply Mode.
For example, if the user normally makes
copies of originals that are about 6%
black, select the 6% setting for best
results. 1: 3%
2: 6%
3: 10%
4: 15%
2-214
TD Sensor
Initial Setting Performs the TD sensor initial setting.
This SP mode controls the voltage
applied to the TD sensor to make the TD
sensor output 2.5
±
0.1 V.
After using SP2-214, check SP2-220 to
see if the sensor is working correctly.
This mode is started by pressing the
key and stops automatically after about
2.5 minutes. Use this mode only after
adding new developer.
2-215-001
to
2-215-002
TD Sensor
Output Display † Displays the TD sensor output voltage.
SP2-215-001: V
T
= Current TD sensor
output
SP2-215-002: V
TREF
= Reference TD
sensor output
2-220
TD Sensor
Initial Output
Display † Displays the TD sensor initial setting
output (after doing SP2-214).
Normally, 2.5
±
0.1 V is displayed.
[Range: 0 V to 5.0 V]
If it is not, the sensor may be defective.
Overall
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SERVICE PROGRAM MODE
SM 1-69 A207/A208/A211