Epson 9600, 7600 service manual Check Skew

EPSON Stylus Pro 7600/9600 Revision A

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.

CHECK	When the skew check result is “99.999mm”, the paper is in the
POINT	following conditions. Clear the cause and execute the check again.
	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.

Check Skew :			[Paper Feed ∆] Key: +
?		1.0m	[Paper Feed ∇] Key : –	∼ 0.1m)
	[Enter]		* Setting possible in increments of 0.1 m (10.0m

Exc. Skew

Normal completion of paper edge detection after paper transport by the preset distance

SkewResult:		+ for Home side, - for opposite side
?	+0.010mm

Figure 5-31. Menu Transition for Skew Checking

Adjustment Self-diagnostic Function 238