Ricoh A-P3 Service Manual page 144

PRINTER ENGINE SERVICE MODE
SP2 Mode Number
2801* TD Sensor Initial Setting
2802* TD Sensor Manual Setting
01 Initial Vt
02 Vt Max
03 Vt Min
2805 01 Initialize Process Control
Setting
2902 03 Test Pattern (Printing)
2909 02 Print Main Scan
Magnification – Printer
2911 Transfer Current Timing
01 La (On Timing)
02 Lb (Off Timing)
03 Lc (Off Timing)
Function and [Setting]
Performs the TD sensor initial setting. This SP
mode controls the voltage applied to the TD
sensor to make the TD sensor output about 4.0
V. Press #(Enter) to start. After execution the TD
sensor output voltage is displayed.
Use this mode only after installing the machine,
changing the TD sensor, or adding new
developer.
Allows you to adjust the TD sensor output VT
manually for the initial, maximum, and minimum
settings.
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
SP2220.
[1.0 ~ 5.00 V / 4.78 V / 0.02 V step]
Adjusts the maximum value for SP2802-01.
[1.0 ~ 5.00 V / 4.78 V / 0.02 V step]
Adjusts the minimum value for SP2802-01.
[1.0 ~ 5.00 V / 1.0 V / 0.02 V step]
Initializes all the process control settings.
Prints the printer test patterns. Select the
number of the test pattern that you want to print.
(☛ 5.3.2)
[0~38 / 0 / 1 step]
This SP mode is useful for finding whether the
LDB (Laser Diode Board) or the BICU is
defective. If the printout is not satisfactory, the
LDB is defective.
Adjusts the magnification in the main scan
direction when printing from a personal
computer.
[–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 (☛ SP2301).
[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]
5-16
6 November, 2001