Ricoh D197 Service Manual page 654

[Scanner Hard Error]
4647
Displays result of SBU connection check.
Power-ON
Shows cause of error when an error occurs with the SBU connection
detect when Scanner turns on. When an error, SC144-00 (SBU
Communication error) will be given.
Bit15: Unused
Bit14:SBU hardware error (Power ON/un-reset error)
Bit13:SBU hardware error (Serial communication error: F side)
Bit12:SBU hardware error (Reset error: F side)
4-647-001
Bit11: Unused, Bit10: Unused
Bit9:SBU hardware error (Version error)
Bit8: Unused, Bit7: Unused, Bit6: Unused
Bit5:SBU hardware error (Serial communication error: L side)
Bit4:SBU hardware error (Reset error:Lside)
Bit3: Unused, Bit2: Unused, Bit1: Unused
[format] binary
Scan adjust error (SSCG correction) flag=
(b15,b14,b13,b12,b11,b10,b9,b8,b7,b6,b5,b4,b3,b2,b1,b0)
4688 [DF Density Adjustment]
ARDF
For the ARDF only. Adjusts density difference between Book and ADF.
4-688-001

Value increase: ADF density deeper.

Value decrease: ADF density thinner.
4688 [Scan Image Density Adjustment]
1-pass DF
4-688-002
For the SPDF only. Adjusts density difference between Book and ADF.
SM
ENG [0 to 65535 / 0 / 1/step]
*ENG [80 to 120 / 102 / 1 %/step]
*ENG [80 to 120 / 103 / 1 %/step]
5-79 D197/D198/D199/D200/D201/D202
SP Mode Tables - SP4000