Upper Surface Sensor Positioning Adjustment - Epson Stylus Pro 5000 Service Manual

Stylus Pro5000

5.1.1.10 Upper Surface Sensor Positioning Adjustment

Upper surface sensor is the sensor to stop the lifter height at appropriate
position according to the paper volume, when the paper is picked up from
the paper tray. (Refer to Chapter2 for more details) If the timing of this
sensor is not right, the position that the lifter stops becomes too high or too
low. As a result, it causes mis-paper loading or double feeding. Following
shows conditions that require this upper surface sensor positioning
adjustment.
Table 5-13. Conditions that require Paper Pick Up Positioning
No. Conditions
1 ASF Unit Exchange
2 Upper Surface Sensor
Exchange/Removal
WARNING
Following exclusive tool is required for this
adjustment. It is prohibited to perform
disassembly and assembly without this tools.
Tool Name:
Adaptive Model : Use only for Stylus Pro5000
Code No.:
Rev. A
Adjustment
Reason/Background
Even the whole ASF unit is removed, the
timing that the sensor detects the lifted
lifter condition should be very accurate.
Therefore, even in the simple operation to
attach the removed ASF unit again, this
adjustment is necessary. (This prevents
precise assembling differences which
happen on the process of assembly)
Upper surface sensor is attached to the
ASF unit through the spring washer by the
screw. Therefore, as the screw is
tightened, the angle of the sensor also
changes(angle tilts downward), and as a
result, its sensor timing also changes,
Pick up detector(upper surface
sensor) adjust tool
103983200
Following shows its procedure.
Step1. Plug in the AC adapter of the adjust tool.
Step2. Switch on the adjust tool.
Step3. Insert the signal cable from the ASF unit to the connector of
the adjust tool. Next page shows the cable connection
between the adjust tool and ASF unit.
Chapter5 Adjustment
5-37