Service manual

EPSON Stylus C82 Revision A
ADJUSTMENT Overview 44
5.1 Overview
This section describes all adjustment procedures for Stylus C82.
5.1.1 Conditions for Each Adjustment
The Stylus C82 adjustment program is Epson's first use of a sequential program for performing mechanical/electrical adjustments in an established order. The program will use an
interactive method to guide you through suitable adjustments that correspond to repairs that have actually been made. This chapter only lists the adjustment conditions.
C A U T I O N
 The adjustment program only operates with PCs running Win95/Win98.
 When performing ink charge for a cartridge currently in use (same as initial ink charge), an ink out error may be generated during the operation. If this
occurs, replace the ink cartridge and try the operation again.
 There are mainly two functions on the Stylus C82 adjustment program. One is the sequential adjustment mode depending on your repaired/removed
parts, and another one is the particular adjustment mode for the old hand at repair or, if you've already decided a specific adjustment option. Basically,
Epson recommend you to adopt sequential adjustment mode anytime.
Table 5-1. Adjustment Program Supported Functions
Category Items Conditions Purpose
Adjustment Back up operation Try in stages before changing the circuit board. If the results can be read out, easy repairs may be possible without performing many
adjustments.
EEPROM
initialization
Performed after circuit board replacement regardless of result from
Backup try described above.
This operation allows the firmware to recognize differences between Japanese made
parts and foreign made parts and optimizes the ID check performed between the main
circuit board and the ink cartridge.
Head ID input Performed after printhead and main board replacement. If this is not performed, the printing will become unstable and result in poor operation
such as continuous generation of Head Hot Error (Fatal Error indicator).
Head angular
adjustment
Performed after printhead removal/replacement. If this slips, vertical lines will zigzag and letters will slope like italics.
Bi-D adjustment Performed after printhead, main board and CR motor replacement. (Not
necessary if only main board was replaced and Backup was successful.)
When bi-directional printing is being performed, the targeted ink impact position is
adjusted for alignment regardless of the direction of CR motion. (User adjustment
possible with Utility on the Driver.)
PF adjustment Performed after printhead, main board and PF motor replacement. (Not
necessary if only main board was replaced and Backup was successful.)
Sliding will occur if PF motor revolution speed becomes high during high speed
printing. Correcting this at PF motor control reduction table eliminates sliding even
during high speed printing, preventing appearance of white lines. (User adjustment
possible with Utility on Driver.)
PF belt tension
adjustment
Performed after PF motor removal/replacement. • To reduce the load on the PF Motor.
• To ensure precision of paper feeding.