Check Skew - Epson Stylus Pro 7600 Service Manual

EPSON Stylus Pro 7600/9600

5.2.3.6 Check Skew

Feed paper by a specified distance (specify the distance on the panel), read the paper
edge position before and after paper feed with the edge sensor and check the difference
between the two readings. (See Figure 5-31)
After completion of initial operation, input the value for paper feed distance. Then the
Edge Sensor will detect the paper left edge (capping side) and the printer will display
the difference between the positions before and after paper feed.
If a paper recognition error before or after paper feed occurs or if the Rear Sensor
detects "No Paper" during paper feed, the display shows paper error. Then press the
appropriate key to leave this item.
NOTE: The printer will leave this item once the [Pause] key is pressed on the
control panel while the printer is not processing.
At the first detection of the paper left edge, the reference position for paper
skew judgment is determined in the firmware.
The "Paper Out" LED blinks or lights up if the paper detection error has
occurred. In such cases, raise the lever once and then execute the same
operation again.
Press the [Pause] key for transition to "Adj: Check Skew".
No panel key works during execution of skew checking.
When the skew check result is "99.999mm", the paper is in the
C H E C K
following conditions. Clear the cause and execute the check again.
P O I N T
1. The paper width detection indicates that one of the right and
left edge positions of the paper is different from that by the
previous detection by ±3 mm or more.
2. When the head is at the home position, the distance from the
row of K nozzles to the paper detected position on the home
side is 142.0 mm or less. (The paper is too close to the home
position.)
Lever up or cover opening was performed during paper feed
operation.
Adjustment
Check Skew :
?
[Enter]
Exc. Skew
Normal completion of paper edge detection after paper
transport by the preset distance
SkewResult:
? +0.010mm
Figure 5-31. Menu Transition for Skew Checking
Self-diagnostic Function
[Paper Feed ∆] Key: +
1.0m
[Paper Feed ∇] Key : –
* Setting possible in increments of 0.1 m (10.0m
+ for Home side, - for opposite side
Revision A
∼
0.1m)
238