Ricoh A230 Service Manual page 225

SERVICE PROGRAM MODE
Mode No.
Class 1
Class 3
and 2
2-902 3
2-909 * 1*
2*
2-911* 1*
2*
3*
2-912*
2-913
2-914* 1*
A230/A231/A232
Test Pattern
Printing
(Printing)
Main Scan
Magnification
(Copier)
Main Scan
Magnification
(Printer)
Transfer Current
Timing
(On Timing)
Transfer Current
Timing
(Switch Timing)
Transfer Current
Timing
(Off Timing)
Drum Reverse
Rotation Time
Test Pattern ID
Adjustment
Process Control
Setting - Cα
Function
Prints the printer test patterns.
See section 4.2.3. for how to print test patterns.
Example: 10. Trimming Area
This SP mode is useful for finding whether the LDDR or
the BICU is defective. If the printout is not OK, the LDDR
is defective.
Adjusts the magnification in the main
scan direction for copy mode.
Use the / key to toggle between +
and -. See "Replacement and
Adjustment - Copy Adjustments" for
details.
Adjusts the magnification in the main
scan direction when printing from a
personal computer.
Use the / key to toggle between +
and -. See "Replacement and
Adjustment - Copy Adjustments" for
details.
Adjusts the transfer current on timing at
the leading edge.
Adjusts the transfer current switch
timing. This determines when the
leading edge stops and the image area
current begins (see SP 2-301).
Adjusts the transfer current off timing (–
5 mm is 5 mm after the trailing edge).
Designer use only. Do not change
the value.
Adjusts the image density for printing
test patterns (with SP2-902). Usually
this SP mode is only used by designers.
The value is cleared when the main
power switch is turned off and on.
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.
4-16
Settings
- 2.0 ~+ 2.0
0.1 %/step
+ 0.00 %
- 2.0 ~+ 2.0
0.1 %/step
+ 0.00 %
-30 ~ +30
1 mm/step
0 mm
-30 ~ +30
1 mm/step
10 mm
-30 ~ +30
1 mm/step
- 5 mm
0 ~ 50
1 ms/step
50 ms
0 ~ 15
1/step
15
0 ~ 400
10 V/step
250 V
SM