Ricoh D025 Service Manual page 814

System Service Mode
4904 [Scanner IPU Board Test]
Test1
001
Performs a write and read check of the ASICs on the BICU board and displays
the result.
Test2
002
Performs an image path check on the BICU board and displays the result.
[Dither Selection] DFU
4905
Changes the parameters for error diffusion.
001 Dither Selection
D023/D025
Bit0: TAURUS register
Bit1: ORION register
Bit2: LUPUS register
- Bit3 to 11: Not used
Bit12: Ri20
Bit13 to 15: Not used
0: OK, 1: Error
Bit0: Image path from SBU to TAURUS
Bit1: Image path from TAURUS to ORION
Bit2: Image path from ORION to TAURUS
Bit3: Image path from TAURUS to LUPUS
- Bit4 to 11: Not used
Bit12: Image path from LUPUS to Ri20
Bit13: Image path from Ri20 to GAVD
Bit14 and 15: Not used
0: OK, 1: Error
*ENG [0 to 255 / 0 / 1 /step] DFU
8-218 SM Appendix