Sp2-Xxx (Drum) - Ricoh J-P3 Service Manual

20 February 2004

SP2-XXX (Drum)

2001 [Charge Bias] Charge Roller Bias (DC or AC component: [Color], Process Speed)
U: Upper, L: Lower
Adjusts the DC component of the charge roller bias in the various print modes.
Charge bias (DC component) is automatically adjusted during process control; therefore,
adjusting these settings does not effect while process control mode (SP3-125 Default: ON) is
activated. When deactivating process control mode with SP3-125, the values in these SP modes
are used for printing.
2001 001 DC: [K]
2001 002 DC: [Y]
2001 003 DC: [M]
2001 004 DC: [C]
• Displays the AC component of the charge roller bias adjusted during machine initialization or
process control self-check.
• Sets AC bias in the various print modes for test purposes.
If the optimum AC bias cannot be selected because of the settings of SP2-001-014 through 017,
this may cause white spots on images and black spots on background. (In particular, spots may
appear if the room temperature is very low.)
Check the printouts after changing the AC bias with these SP modes (SP2-001-005 through 013)
and exiting SP mode. If increasing or decreasing the AC bias for relevant color solves the spot
problem, shift the AC target (SP2-001-014 through 017) by the value increased or decreased
during the test.
2001 005 AC: [K]: L
2001 006 AC: [K]: M
2001 007 AC: [K]: H
2001 008 AC: [Y]: L
2001 009 AC: [Y]: M
2001 010 AC: [M]: L
2001 011 AC: [M]: M
2001 012 AC: [C]: L
2001 013 AC: [C]: M
2001 014 AC Target [K]
Sets the upper limit of the AC component adjustable range for black.
During machine initialization and process control self-check, the AC component of
the charge roller bias is automatically adjusted within the range specified by SP2-
001-014 through 017.
2001 015 AC Target [Y]
2001 016 AC Target [M]
2001 017 AC Target [C]
2103 [LD Control] LD Power Control
([Color Mode, Color], Process Speed, K or Color mode) P: Power, M: Magnification
Adjusts the laser power by changing the current applied to LD.
Laser power is automatically adjusted during process control; therefore, adjusting
these data has no effect while Process Control (SP3-125 Default : ON) is activated.
After deactivating Process Control with SP3-125, the values in these SP modes are
used for printing.
2103 001 P: [K] 62.5 C
2103 002 P: [K] 125 C
2103 004 P: [Y] 62.5 C
2103 005 P: [Y] 125 C
2103 007 P: [M] 62.5 C
2103 008 P: [M] 125 C
2103 010 P: [C] 62.5 C
2103 011 P: [C] 125 C
*BCU [300 to 1000 / 700 / 10 volts/step] DFU
*BCU
*BCU
*BCU
*BCU [0 to 255 / 40 / 1/step] DFU
*BCU [0 to 255 / 159 / 1/step] DFU
*BCU [0 to 255 / 159 / 1/step] DFU
*BCU [0 to 255 / 40 / 1/step] DFU
*BCU [0 to 255 / 159 / 1/step] DFU
*BCU [0 to 255 / 40 / 1/step] DFU
*BCU [0 to 255 / 159 / 1/step] DFU
*BCU [0 to 255 / 40 / 1/step] DFU
*BCU [0 to 255 / 159 / 1/step] DFU
*BCU [0 to 255 / 134 / 1/step] DFU
*BCU [0 to 255 / 129 / 1/step] DFU
*BCU [0 to 255 / 134 / 1/step] DFU
*BCU [0 to 255 / 129 / 1/step] DFU
*BCU [0 to 1023 / 576 / 1/step] DFU
*BCU [0 to 1023 / 640 / 1/step] DFU
*BCU [0 to 1023 / 576 / 1/step] DFU
*BCU [0 to 1023 / 640 / 1/step] DFU
*BCU [0 to 1023 / 576 / 1/step] DFU
*BCU [0 to 1023 / 640 / 1/step] DFU
*BCU [0 to 1023 / 576 / 1/step] DFU
*BCU [0 to 1023 / 640 / 1/step] DFU
5-15
ENGINE SERVICE MODE