Service manual

PRINTER ENGINE SERVICE MODE 30 July, 2001
5-14
2
Mode No.
(Class 1, 2, and 3)
Function / [ Setting ]
21 AC U Limit[FC] * Sets the upper limit of the AC component
adjustable range for color.
During machine initialization and process control
self-check, the AC component of the charge roller
bias is automatically adjusted within the range
specified in the SP2-001-021 and 022.
[0 to 255 / 90 / 1/step ] DFU
001
22 AC L Limit[FC] * Sets the lower limit of the AC component
adjustable range for color.
[0 to 255 / 84 / 1/step ] DFU
[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.
1 P0:[FC,K] 62.5 *
[ 0 to 1023 / 672 / 1/step ] DFU
2 P0:[FC,K] 125 *
[ 0 to 1023 / 640 / 1/step ] DFU
4 P0:[FC,Y] 62.5 *
[ 0 to 1023 / 672 / 1/step ] DFU
5 P0:[FC,Y] 125 *
[ 0 to 1023 / 640 / 1/step ] DFU
7 P0:[FC,M] 62.5 *
[ 0 to 1023 / 672 / 1/step ] DFU
8 P0:[FC,M] 125 *
[ 0 to 1023 / 640 / 1/step ] DFU
10 P0:[FC,C] 62.5 *
[ 0 to 1023 / 672 / 1/step ] DFU
11 P0:[FC,C] 125 *
[ 0 to 1023 / 640 / 1/step ] DFU
13 P0:[K,K] 62.5 *
[ 0 to 1023 / 672 / 1/step ] DFU
14 P0:[K,K] 125 *
[ 0 to 1023 / 672 / 1/step ] DFU
15 P0:[K,K] 185 *
[ 0 to 1023 / 601 / 1/step ] DFU
25 P1:[K,K] 62.5 *
[ 0 to 1023 / 672 / 1/step ] DFU
26 P1:[K,K] 125 *
[ 0 to 1023 / 672 / 1/step ] DFU
27 P1:[K,K] 185 *
[ 0 to 1023 / 601 / 1/step ] DFU
Main Scan Magnification ([Color], Laser Exposure Frequency)
55 M:[K] 64.3MHz *
56 M:[Y] 64.3MHz *
57 M:[M] 64.3MHz *
58 M:[C] 64.3MHz *
103
59 M:[K] 47.6MHz *
Displays the result of the latest line position
adjustment. Changing this affects the main scan
magnification; however, this will be automatically
corrected at the next line position adjustment. If a
fine adjustment is required, it can be done with
SP5-993-013 to 015 (this affects the way that the
adjustment is done, and will be effective from the
next line position adjustment).
[ 0 to 280 / 140 / 1 dot/step ] 1 dot = 20µ DFU
NOTE: If the line position adjustment does not
work properly, the line position can be
adjusted manually with this SP mode as a
temporary measure. In this case, the line
position adjustment needs to be disabled
with SP5-993-001.
[LD Beam Pitch] LD Beam Pitch
Sets the beam pitch for black in 1200 dpi or 600 dpi mode.
NOTE: After replacing the laser optics housing unit, the data printed on the decal attached
to the new unit must be input with this SP mode.
2 Pitch 1200 *
[ 0 to 255 / 50 / 50 pulse/step ] FA
3 Pitch 600 *
[ 0 to 255 / 42 / 50 pulse/step ] FA
5 Display 1200 [ 0 to 255 / - / 1 pulse/step ]
109
6 Display 600 [ 0 to 255 / - / 1 pulse/step ]