Ricoh B003 Service Manual page 218

SERVICE PROGRAM MODE
SP2 Mode Number
2802* TD Sensor Manual Setting
1* VTS
2* VTMAX
3* VTMIN
2805 Developer Initialization
2902 2 IPU Test Pattern
3 Printing Test Pattern
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
B003/B004/B006/B007
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Function and [Setting]
Allows you to adjust the TD sensor output manually
for the following.
Adjusts the TD sensor output (VT).
Change this value after replacing the development
unit with another one that already contains toner.
For example, when using a development unit from
another machine for test purposes. To adjust VT,
use a similar procedure as for SP2-220.
[1.00~5.00V / 4.78V / 0.02V step]
Adjusts the maximum value for SP2-802-1.
[1.00~5.00V / 4.78V / 0.02V step]
Adjusts the minimum value for SP2-802-1.
[1.00~5.00V / 1.00V / 0.02V step]
Performs the developer initialization. Press 1 to
start.
This SP should be performed after doing SP2-801-
1 at installation and after replacing the drum.
Prints the test patterns for the IPU chip. (☛ 5.1.3)
[0~15 / 0 / 1 step]
This SP mode is useful for finding whether the
BICU or the SBU is defective. If the printout is not
OK, the BICU is defective.
Prints the printer test patterns. Select the number of
the test pattern that you want to print. (☛ 5.1.3)
[0~38 / 0 / 1 step]
This SP mode is useful for finding whether the
LDDR or the BICU is defective. If the printout is not
satisfactory, the LDDR is defective.
[0~38 / 0 ]
Adjusts the magnification in the main scan direction
for copy mode.
Press ! to toggle ±.
[–2.0~+2.0 / 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 / 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.
5-12
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