Ricoh B079 Service Manual page 240

SERVICE PROGRAM MODE
SP2 Mode Number
2909* Main Scan Magnification
1* Copier
2* Printer
2911 Transfer Current On/Off Timing
1 La (On Timing)
2 Lb (Switch Timing)
3 Lc (Off Timing)
2912 1 Drum Reverse Rotation
Interval
2913* 1* Print Density for Test
Pattern
2914* Process Control Setting – By-
pass
1*
Cα
2*
Cβ
3*
Bγ
B079/B082
CÓPIA NÃO CONTROLADA
Adjusts the magnification in the main scan direction
for copy mode.
Press  to toggle ±.
[–2.0 ~ +2.0 / 0 / 0.1% step]
Adjusts the magnification in the main scan direction
when printing from a personal computer. Press 
to toggle ±.
[–2.0 ~ +2.0 / 0 / 0.1% step]
Adjusts the transfer current timing for the three
items below.
On timing at leading edge.
[–30 ~ +30 / 0 mm / 1 mm step]
Transfer current switch timing. This determines
when the leading edge stops and the image area
current begins (see SP2-301).
[0 ~ +30 / 10 mm / 1 mm step]
Transfer current timing (e.g. –5 mm) is 5 mm after
the trailing edge.
[–30 ~ +30 / – 5 mm / 1 mm step]
DFU.
Sets the print density for the patterns printed with
SP2-902-3.
[0 ~ 15 / 15 / 1 ]
Adjusts the charge roller voltage for the following
items.
Adjusts the charge roller voltage used when paper
with a small width is fed from the by-pass tray. The
paper width below which the correction starts
depends on the value of SP2-309-1.
Use this SP when an image problem (such as white
spots at the center of black dots or breaks in thin
black lines) occurs when paper with a small width is
fed from the by-pass feed tray.
[0 ~ 400 / 150 / 10V step]
Adjusts the charge roller voltage used when paper
with a small width is fed from the by-pass tray. The
paper width below which the correction starts
depends on the value of SP2-309-2.
Use this SP when an image problem (see 2-914-1)
occurs when paper with a small width is fed from
the by-pass feed tray.
[0 ~ 400 / 0 / 10V step]
Adjusts the development bias used when paper
with a small width is fed from the by-pass tray. The
paper width below which the correction starts
depends on the value of SP2-309-1.
Use this SP when an image problem (see 2-914-1)
occurs when paper with a small width is fed from
the by-pass feed tray.
[0 ~ 300 / 200 / 10V step]
5-14
CÓPIA NÃO CONTROLADA
Function and [Setting]
SM