Paper Feed Roller Assembly Removal - Epson LQ-2550 Technical Manual

4.2.5.21 Paper Feed Roller Assembly Removal

Step 1: Remove the printer mechanism. (Refer to Section 4.2.5.1.)
Step 2: Remove the four paper feed springs at the back of the base frame.
Step 3: Remove the three screws CPS(M3X8) securing the paper thickness sensor assembly at the
back of the printer.
Step 4: Remove the left frame. (Refer to Section 4.2.5 .20.)
Step 5: Remove the paper guide assembly.
Step 6: Remove the paper thickness sensor assembly, and place it at the opposite side of the base frame.
Step 7: Remove the paper feed roller shaft, then remove the paper feed roller assembly from the shaft.
Figure 4-66. Paper Feed Spring Removal (Back of Base Frame)
When the paper feed roller assembly is removed, perform the following adjustments:
. Section 4.3.1 Timing Belt Tension Adjustment (Page 4-40)
Section 4.3.2 Paper Feed Motor Backlash Adjustment (Page 4-41)
Section 4.3.3 Parallelism Adjustment Between Carriage Guide Shaft B and Platen (Page 4-42)
. Section 4.3.6 Bi-directional Printing Alignment (Page 4-47)
Paper Thickness
Sensor Assembly
Paper Feed Roller
Figure 4-67. Paper Feed Roller Assembly Removal
ADJUSTMENT REQUIRED
Paper Feed Spring
4-37
REV.-A
Paper Feed
Roller Shaft