Epson Stylus PRO 7500 Service Manual page 185

EPSON Stylus Pro 7500
n
Since the new pigment based firmware is written to the flash
ROM by this upgrade service implementation, the display in the
sensor adjustment mode's LCD display is as shown below. The
meaning of each value is as shown below.
• Panel Display: "Sen: Sensor Name A D ttt vvv"
• ttt = Difference between the sensing level when there is no
paper and when there is paper. This numerical value is
shown in Hexadecimal and changes depending on the
printer's state.
• vvv = Sensor detection level when there is paper. The
hexadecimal number during the adjustment changes
depending on the VR element's adjustment level and
the printer's state.
o
VR Element Function for Each Sensor
The arrangement of the VR chips on the main board is as shown below.
Figure 5-7. Positions of VR 1 ~ VR 6
(As viewed from the rear cover access window.)
Adjustment
See below concerning the adjustment function for each sensor and VR element.
Table 5-7. Adjustment Function for Each Sensor and VR Element
Sensor
P_EDGE Sensor
P_REAR Sensor
P_FRONT Sensor
Adjustment Steps
Volume (VR) Adjustment
VR1 and VR5 VR1
VR3 and VR4 VR3
VR2 and VR6 VR2
Revision A
Fine Adjustment
VR5
VR4
VR6
185