Sensor Adjustment - Epson StylusPRO 7000 Service Manual

EPSON Stylus Pro 7000

SENSOR ADJUSTMENT

After replacing the C299 MAIN board or one of the sensors: P_EDGE,
P_FRONT and P_REAR, you need to adjust the corresponding volume
(variable resistor) on the main board to determine the correct detection level
of sensors.
1. Remove the access cover on the rear cover and enter the "Test Menu" in
the self-diagnostic mode. Select "Sensors" check mode and proceed to
the detailed description for each sensor if you replace the main board or
the individual section for a sensor if you only replace that sensor.
!
When you make these adjustments, make sure to avoid
C A U T I O N
strong light (sun-light) around the printer. These sensors
are light-sensitive and may not function properly under
such conditions. It is recommended to remove the
housing before performing this adjustment to ensure light
is refelected evenly off the paper.
!
Make sure there is no dust or foreign substance on both
the paper and sensor.
!
When performing sensor adjustment, make sure paper is
loaded and parked above the sensor (above the guide
lines as well as the platen).
!
If you need to adjust the volume of the sensors on the
Main board, make sure the driver does not touch the
metal part of the board. (Preferably, use a non-conductive
screwdriver.)
!
Before adjusting the sensor volume, make sure the printer
has firmware version "B0298C" or later. Earlier versions
do not support sensor volume adjustment. See "Firmware
Update" on page 160 for more information. To determine
the release date of the firmware, see the explanation
below.
B0298C:
B0 = SP-7000
28 = day of month
9 = last digit of year
C = month (16-decimal; 1 = January, 2 = February, .... A =
October, B = November, C = December)
Adjustment
"
P_EDGE Sensor
2. Select "Sen:PaperEdgeAD" from the sensor menu.
3. Push the Paper Set Lever back and load a sheet of A3-size normal copy
paper using the guide on the right side of the roll paper cover. Pull the
Paper Set Lever forward to lock the paper in place.
4. Open the front cover, and press down the cutter and move the carriage
over the paper. Close the front cover.
C H E C K
P O I N T
Table 5-6. P_Edge, P_Front, and P_Rear Sensor Adjustment
P_Front & P_Rear
Self-Diagnostic Mode Menus
The LCD will display "Sen:EdgeAD YYY XXX"
YYY = current paper volume 0E0~0E8; ideal = 0E0
XXX = current no-paper volume 040 or more
Make sure that the XXX signal level indicated on the LCD is
over 040 and the YYY signal level indicated on the LCD is
between 0E0~0E8.
YYY Parameter
Sensor
(no paper)
P_Edge 040 or higher
040 or higher
Table 5-7. Sensor Volume Adjustment
Sensor
P_Edge
P_Front
P_Rear
Revision A
XXX Parameter
0E0~0E8
~095
Volume
VR1 & VR5
VR2 & VR6
VR3 & VR4
166