Epson Stylus Pro 7400, Service Manual

Page: 340 / 428

EPSON Stylus Pro 7400/7800/9400/9800 Revision B
Adjustment Basic Adjustment 340
5.3.21 Rear Sensor Adjustment
Whenever the Rear Sensor is replaced, AD values (basis for paper detection) of a
newly attached sensor should be obtained to store them onto the Main Board.
†
Required Tool
Kimoto, Micro Trace #300
†
Procedure
1. Enter into the Serviceman Mode.
Turn the printer ON while holding down the [Paper Source ], [Menu
], and [Paper Feed ] .
2. Select “SELF TESTING: Adjustment” to enter the Self Testing menu.
[Paper Feed ]
→
[Menu ]
3. Select “Adjustment: RearAD”.
[Paper Feed ] five times
4. Release the Paper Set Lever.
5. Load the Micro Trace on the printer from the rear paper feeder setting it to the
position shown in Figure 5-63 , and lower the Paper Set Lever.
6. Press the [Menu ] button. “[Enter] Start” will be displayed on the LCD
panel.
7. Press the [Enter ] button to start the AD value acquisition operation. After
about five seconds, the obtained AD value is displayed as “RearAD: *** ***
***”.
8. After confirming the “RearAD: *** *** ***” display, release the Paper Set
Lever and remove the Micro Trace.
9. Lower the Paper Set Lever and turn the printer OFF.
Figure 5-63. Setting the Micro Trace
C A U T I O N
In Figure 5-63 , the H Top Cover is removed to show the position of
the Micro Trace clearly. When performing the adjustment, do not
remove the H Top Cover, or the AD value cannot be obtained
correctly.
C A U T I O N
“Retry AD Adjust” is displayed when the value cannot be obtained
due to Rear Sensor failure. In such case, replace the sensor and
make the adjustment again.
Micro Trace