Epson Stylus Scan 2000, Service Manual

Page: 119 / 264

EPSON Stylus Scan 2500 Revision A
Adjustment Required Adjustments 118
The scanner mechanism requires no adjustment for any service operation provided you
closely follow the specifications in this manual and the instructions in Chapter 4
“Disassembly and Assembly”.
5.1 Required Adjustments
The Stylus Scan printer mechanism requires the adjustments shown in Table 5-1. Perform
the necessary adjustment referring to the steps and figures described throughout this
chapter. Table 5-2 provides a list of necessary adjustments and the conditions when they are
required.
Table below shows the actions taken and required adjustments in the order to be performed.
Table 5-1. List of Service Procedures That Require Adjustment
No. Content of Operation Adjustment Procedure
1 Replacement of the printhead
1. Perform Vh voltage writing operation.
2. Perform initial ink charge.
3. Perform printhead angle adjustment.
4. Perform Bi-d Adjustment.
5. Reset ink counter.
2 Replacement of the main board
1. Perform Vh voltage writing operation.
2. Perform Bi-d adjustment.
3
Replacement or Removal of the
Carriage Unit
1. Perform parallel adjustment.
2. Perform printhead angle adjustment.
3. Perform Bi-d adjustment.
4. Reset ink counter.
4 Replace of the CR Motor
1. Perform Bi-d adjustment.
5
Replacement of the Printer
Mechanism
1. Perform Head Voltage ID Input.
2. Perform initial ink charge.
3. Perform Bi-d adjustment.
Table 5-2. List of Required Adjustments
No. Adjustment Item Conditions
1 Parallelism Adjustment
n When you replace or remove the carriage or carriage
guide shaft.
n When you move the parallelism adjustment bushing.
2 Initial Ink Charge
n When you replace or remove the printhead.
3 Head Voltage ID Input
n When you replace the printhead.
n When you replace the main board.
Note) The values stored in this address are not
erased by the EEPROM reset operation.
4
Printhead Angle
Adjustment
n When you replace or remove the printhead.
n When you move the printhead angle-adjust lever.
n When you replace or remove the carriage or carriage
guide shaft.
5 Bi-D Adjustment
n When you replace or remove the printhead.
n When you replace the main board.
n When you replace the CR Motor.
n When you replace or remove the carriage or carriage
guide shaft.
6 Reset ink counter.
n When you replace the printhead.
n When you replace or remove the carriage or carriage
guide shaft.