Ricoh B079 Service Manual page 238

SERVICE PROGRAM MODE
SP2 Mode Number
2301 Transfer Current Adjustment
1* 1st Side of Paper
2* 2nd Side of Paper
3* Leading Edge
4* Bypass Feed (45 cpm)
5* Leading Edge Bypass Feed
(45 cpm)
6* Bypass Feed (35 cpm)
7* Leading Edge Bypass Feed
(35 cpm)
Transfer Current Correction
2309*
1* Paper Lower Width (a)
2* Paper Upper Width (b)
3*
Paper Tray (α)
B079/B082
CÓPIA NÃO CONTROLADA
Adjusts the current applied to the transfer belt during
copying the 5 phases listed below.
Printing the first side of the paper (image area).
If the user uses thicker paper, the current may have
to be increased to ensure sufficient transfer of toner.
B079: [20 ~ 100µA / 35 / 1µA step]
B082: [20 ~ 100µA / 45] / 1µA step]
Printing the second side of the paper (image area).
B079: [20 ~ 100µA / 35 / 1µA step]
B082: [20 ~ 100µA / 40] / 1µA step]
Copying at leading edge of the paper.
Increase the current to separate the paper from the
drum properly in high humidity and high temperature
conditions.
B079: [20 ~ 100µA / 35 / 1µA step]
B082: [20 ~ 100µA / 45] / 1µA step]
Copying from the by-pass tray (image area) for the
B082 (45 cpm).
If the user normally feeds thicker paper from the
bypass tray, use a higher setting.
B082: [20 ~ 100µA / 45 / 1µA step]
Copying at the leading edge of paper fed from the
by-pass tray for the B082 (45 cpm).
Increase the current to separate the paper from the
drum properly in high humidity and high temperature
conditions.
B082: [20 ~ 100µA / 60 / 1µA step]
Copying from the by-pass tray (image area) for the
B079 (35 cpm).
B079: [20 ~ 100µA / 35 / 1µA step]
Copying at the leading edge of paper fed from the
by-pass tray for the B079 (35 cpm).
B079: [20 ~ 100µA / 45 / 1µA step]
Corrects the transfer current for the items below.
Adjusts the lower paper width threshold for the
transfer current, charge voltage, and development
bias corrections.
Use this SP when an image problem (e.g.,
insufficient toner transfer) occurs with a small width
paper. If the paper width is smaller than this value,
the transfer current will be multiplied by the factor in
SP2-309-3 (paper tray) or SP2-309-5 (by-pass).
[0 ~ 297 / 150 / 1 mm step]
Adjusts the upper paper width threshold for the
transfer current, charge voltage, and development
bias corrections.
As for SP2-309-1, but the factors are in SP2-309-4
(paper tray) and SP2-309-6 (by-pass).
[0 ~ 297 / 216 / 1 mm step]
Adjusts the transfer current correction coefficient
used if the paper width is less than the setting of
SP2-309-1.
[1.0 ~ 3 / 1.2 / 0.1 mm step]
5-12
CÓPIA NÃO CONTROLADA
Function and [Setting]
SM