Ricoh D009 Service Manual page 488

System SP Table-4
SBU: Time-out Error
4646
Displays the result of the AGC adjustment.
001 Black Level Adjustment 1
002 Black Level Adjustment 2
White Level Adjustment
Bit 0: Gain adjustment error (even)
Bit 1: Gain adjustment error (odd)
003
Bit 2: White level error (RE)
Bit 3: White level error (RO)
Bit 4: White level error (BE)
Bit 5: White level error (BO)
SBU Error
Displays the result of the SBU connection check.
4647
Power-On
D009/D011/D012/D013/D091/D092
[0 to 1 / 0 / 1 ]
0:OK, 1: AGC adjustment failure
[0 x 0000 to 0 x 003F / 0 / 1 Hex ]
[0 to 1 / 0 / 1 ]
0: OK, 1: SBU connection check failure
If the SBU connection check fails, SC144-001, -002 or
-003 occurs.
4-56 SM Appendix