EPSON Stylus Scan 2500 Revision A

Adjustment Required Adjustments 113

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 c h ar g e.
3. Perform printhead angle adjustment.
4. Perform Bi-d Adjustment.
5. Reset ink counter.
2Replacement of the main board 1. Perform Vh voltage writing
operation.
2. Perform Bi-d adjustment.
3Replacement or Removal of the
Carriage Unit
1. Perform parallel adjustment.
2. Perform printhead angle adjustment.
3. Perform Bi-d adjustment.
4. Reset ink counter.
4Replace of the CR Motor 1. Perform Bi-d adjustment.
5Replacement of the Printer
Mechanism
1. Perform Head Voltage ID Input.
2. Perform initial ink c h ar g e.
3. Perform Bi-d adjustment.

Table 5-2. List of Required Adjustments

No. Adjustment Item Conditions
1 Parallelism Adjustment
When you replace or remove the carriage or
carriage guide shaft.
When you move the parallelism adjustment
bushing.
2Initial Ink Charge When you replace or remove the printhead.
3 Head Voltage ID Input
When you replace the printhead.
When you replace the main board.
Note) The values stored in this address are not
erased by the EEPROM reset operation.
4Printhead Angle
Adjustment
When you replace or remove the printhead.
When you move the printhead angle-adjust
lever.
When you replace or remove the carriage or
carriage guide shaft.
5 Bi-D Adjustment
When you replace or remove the printhead.
When you replace the main board.
When you replace the CR Motor.
When you replace or remove the carriage or
carriage guide shaft.
6Reset ink counter. When you replace the printhead.
When you replace or remove the carriage or
carriage guide shaft.