Ricoh FT 4015 Service Manual page 26

OPTICS
2) Image Density Adjustment Factor (SP34)
Depending on the SP34 setting, the development bias and the exposure
lamp settings are increased or decreased during ADS mode.
SP34 Setting
0
1
2
3
4
1 step = 0.5 V (120 V machines) or 1.0 V (230 V machines)
3) Manual Image Density Setting Factor
Depending on the manual image density setting on the operation panel, the
exposure lamp voltage is changed as shown in the table below:
Darker
Manual ID
Level
Exposure
Lamp Voltage
Factor
Development
Bias Voltage
(Volts)
1 step = 0.5 V (120 V machines) or 1.0 V (230 V machines)
Setting Dev. Bias
Normal
Light –40 V
Dark +40 V
Lightest –40 V
Darkest +40 V
1 2
V – 6 V – 4
0 0
steps steps
–200 –200
Exposure Lamp
0
+4 steps
–4 steps
3 4
V – 2
0
V
0
steps
–200 –200
V
2-12
20 December 1996
0
0
0
5 6
V + 2 V + 6
0 0
steps steps
–200 –240
: Base lamp voltage setting (SP48)
0
Lighter
7
V + 12
0
steps
–240