Ricoh B051 Service Manual page 1185

Firmware History for B051/B052
Corrects the following:
•
Final solution for black faint images:
•
Default setting for SP3-970-004 (Image Area Rate: Bk) has been changed to 4.7 as
follows:
[0 ~ 10.0 / 4.7 / 0.1 %/step]
This was based on tests that show a theoretical 4.7% pixel coverage ratio normally
corresponds to a 5% actual image coverage ratio.
•
New SP added to control frequency of ITB clutch on/off:
SP2-970-05 (ITB Cleaning Clutch Off/On Number in Oil removal mode)
[0 ~ 5 / 2 / 1/step]
This SP sets the number of times ITB clutch on/off is performed at the end of oil removal
mode (SP2-970-01), a mode that removes oil from the ITB to ensure uniform image
density. Turning the ITB clutch on/off helps to remove excess toner that can cling to and
then drop from the edge of the newly added ITB cleaning blade during oil removal.
NOTE: Along with this BICU version, be sure to update the main unit controller firmware to
version 2.05.01 or later.
Corrects the following:
•
Extra toner may sometimes stick to the transfer roller and then to the rear side of the next
copy sheet (main motor Off timing has been optimized).
•
The Copier main motor may sometimes continue running if Sort jobs are printed out to
the 500-sheet Finisher (B458).
Corrects the following:
•
SP2-954-001 (New PCU Settings) newly added:
This mode facilitates servicing in the field with individual settings for new and old PCUs.
SP2-954-001 (New PCU Settings)
0: New
1: Old
NOTE: Enabling/Disabling this SP mode will change the settings of all of the SP modes
listed in the table below.
•
A misdetection of SC481 (Transfer belt mark detection error) or SC280 (Image transfer
belt mark detection error) may occur when the main motor rotational direction is changed
from backwards to forwards.
NOTE: Along with this BICU version, be sure to update the main unit controller firmware to
version 2.06 or later.
CÓPIA NÃO CONTROLADA
SYMPTOM CORRECTED
CÓPIA NÃO CONTROLADA
FIRMWARE
VERSION
1.291:01
1.30:01
1.31:01
...continued
Page 11 of 37