Ricoh FT4227 Manual page 546

COPY QUALITY ADJUSTMENT
9.3.3 Highlight Bias (Manual ID Level 7) Adjustment (SP46)
When:
Purpose:
How:
SP46: Highlight Bias
Data Density
0 Normal
1 Darker
2 Lighter
3 Lightest
1. Turn the main switch off.
2. While pressing both "1" and "3" on the operation panel number keys, turn
on the main switch.
NOTE: Release the number keys after confirming that the Call Service
indicator and the copy counter number "0" are blinking.
3. Enter "46" using the number keys and press the "#" key.
4. Change the setting displayed in the three digit indicator by the number
keys. Determine the new setting from the above table. Press the "#" key.
5. Turn the main switch off and on.
If a customer requests a lighter or darker copy
image density at manual image density level 7.
To meet customer's request about the image
density at manual ID level 7.
SP47 changes the development bias voltage for
images at manual ID level 7.
Development Bias
Correction Voltage
–240V
–200V
–280V
–320V
5-90
12 February 1992