Ricoh D072 Service Manual page 328

Scanner Gamma
4922*
Selects "text" or "photo" as the priority output mode. This setting is applied to
all image processing modes of SP4-921.
001 Copy
002 Fax
003 Scanner
Notch Selection
Selects the value of the center ID adjustment notch for the ID adjustment
LEDs.
4923*
Normally the center notch is 3 (range 1-5). If –1 is selected, each notch
shifts down (becomes lighter). If +1 is selected, each notch shifts up
(becomes darker).
This setting is applied to all image processing modes of SP4-921.
001 Copy
002 Fax
003 Scanner
SM Appendix
System Service Mode (F/SPF: D068/D069)
[0=System default/ 1=Text/ 2=Photo]
[–1 = Light / 0 = Normal / +1 = Dark]
5-19 D067/D068/D069/D072