Ricoh B079, Service Manual

Page: 238 / 948

SERVICE PROGRAM MODE
B079/B082 5-12 SM
SP2 Mode Number Function and [Setting]
Transfer Current Adjustment Adjusts the current applied to the transfer belt during
copying the 5 phases listed below.
1* 1st Side of Paper 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 ~ 100
µ
A / 35 / 1
µ
A step]
B082: [20 ~ 100
µ
A / 45 ] / 1
µ
A step]
2* 2nd Side of Paper Printing the second side of the paper (image area).
B079: [20 ~ 100
µ
A / 35 / 1
µ
A step]
B082: [20 ~ 100 µ A / 40 ] / 1 µ A step]
3* Leading Edge 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 ~ 100 µ A / 35 / 1 µ A step]
B082: [20 ~ 100
µ
A / 45 ] / 1
µ
A step]
4* Bypass Feed (45 cpm) 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 ~ 100
µ
A / 45 / 1
µ
A step]
5* Leading Edge Bypass Feed
(45 cpm)
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 ~ 100
µ
A / 60 / 1
µ
A step]
6* Bypass Feed (35 cpm) Copying from the by-pass tray (image area) for the
B079 (35 cpm).
B079: [20 ~ 100
µ A / 35 / 1 µ A step]
2301
7* Leading Edge Bypass Feed
(35 cpm)
Copying at the leading edge of paper fed from the
by-pass tray for the B079 (35 cpm).
B079: [20 ~ 100
µ A / 45 / 1 µ A step]
Transfer Current Correction Corrects the transfer current for the items below.
1 * Paper Lower Width (a) 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]
2 * Paper Upper Width (b) 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]
2309*
3 *
Paper Tray (
α
)
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]