Epson Scan 2500 service manual Left Parallelism Adjustment, Checking Parallelism

EPSON Stylus Scan 2500 Revision A

3.Move the carriage to the center and set the thickness gauge on the fixed position of the front paper guide; B as shown in Figure 5-1on the next page.

4.Move the carriage so that the printhead overlaps the thickness gauge.

	Put the thickness gauge on the flat side of a ribbed
C H E C K
T	section of the front paper guide; B.

P O I N T

To move the carriage, pull the timing belt with your hand.

5.Move the right parallelism adjustment bushing to the rear until the thickness gauge moves with the carriage when you move the carriage about 20 mm right and left (the gap will narrow).

6.From the point where the thickness gauge starts moving with the carriage, move the gear of the right parallelism adjustment bushing one notch toward you (the gap will widen)

7.With the PG lever pulled forward (gap is small), move the carriage right and left to make sure that the thickness gauge does not move.

[LEFT PARALLELISM ADJUSTMENT]

8. Perform Steps 2 to 7 for the left parallelism adjustment bushing.

[CHECKING PARALLELISM]

9.Perform steps 1 to 4 again.

10.Make sure that the thickness gauge does not move right and left along with the carriage when the carriage is moved about 20 mm.

11.Move the right parallelism adjustment bushing one notch to the rear (the gap will narrow).Then check that the thickness gauge moves along with the carriage. If the thickness gauge does not move, go back to Step 1 and repeat the adjustment.

12.If the gap is adjusted correctly, move the right parallelism adjustment

bushing one notch toward you (the gap will widen).

[FIXING PARALLELISM ADJUSTMENT BUSHING]

13.Fix the right and left parallelism adjustment bushings with screws. (one screw for each.)

When completing this adjustment, check the overlap amount of the printhead and head cleaner.

1.Rotate the gear 73.6 and move the head cleaner to the printer rear side.

2.Move the carriage next to the head cleaner and make sure that overlap between the tip of the printhead and cleaner head is more than 0.5 mm.

3.Then, rotate the gear 73.6 and return the head cleaner to the front position.

Front Paper Guide; B	Right,
	HP side

Avoid last two		Thickness	Avoid the last
ribs on left side	Carriage		rib on right
		gauge	side
	assembly

Put the gauge on a flat surface, and then align the center of the gauge with the ribs.

Roller, Assembly, PF Front Paper Guide; B

Figure 5-1. Setting the Parallelism-Adjustment Gauge

Adjustment Printer Adjustment 115