Resetting The Platen Gap Values - Epson DFX-8500 Service Manual

DFX-8500

RESETTING THE PLATEN GAP VALUES

To reset the Alpha and Beta values:
1. Remove the paper, ribbon cartridge, and ribbon mask holder from the printer.
2. Write down the Alpha value written on the side of the printhead.
3. Write down the Beta values written on the label on the inside bottom right corner of the printer
mechanism, under the ribbon cartridge.
4. Close the top cover.
Alpha value:
5. Turn the printer on while holding down the Tear Off, Micro Feed ↓, and Front/Rear buttons. Hold the
buttons down until the printer beeps once.
6. The control panel will display the current Alpha value within 10 seconds. (See Table 4-2.)
7. Adjust the Alpha value:


Press the Micro Feed ↓ button to increase the value by 1.


Press the Micro Feed ↑ button to decrease the value by 1.
8. Press the LF/FF Load button to save the new Alpha value to the EEPROM and exit adjustment mode.
9. Press the Pause/Reset button to write the new Alpha value to the EEPROM and enter Beta adjustment
mode.
Beta values:
10. The control panel will display the current Beta 3' value. (Default = 450)
11. Adjust the Beta 3' value until it is equal to Beta 3 (listed on the mechanism) + 10:


Press the Micro Feed ↓ button to increase the value by 1.


Press the Micro Feed ↑ button to decrease the value by 1.


Press the Tear Off button to increase the value by 10.


Press the Top of Form button to decrease the value by 10.
12. Press the Pause/Reset button to save the Beta 3' value to the EEPROM.
13. The 7-segment LED will flash a 2. This shows the next Beta value to be adjusted, Beta 2. Press the
Micro Feed ↑ button. The control panel will display the current Beta 2 value.
14. Adjust the Beta 2 value in the same way you adjusted the Beta 3' value.
15. Press the Pause/Reset button to save the Beta 2 value to the EEPROM.
16. The 7-segment LED will flash a 3. This shows the next Beta value to be adjusted, Beta 3. Press the
Micro Feed ↑ button. The control panel will display the current Beta 3 value.
17. Adjust the Beta 3 value in the same way you adjusted the Beta 3' value.
18. Press the Pause/Reset button to save the Beta 3 value to the EEPROM.
19. The 7-segment LED will flash a 4. This shows the next Beta value to be adjusted, Beta 4. Press the
Micro Feed ↑ button. The control panel will display the current Beta 4 value.
20. Adjust the Beta 4 value in the same way you adjusted the Beta 3' value.
21. Press the Pause/Reset button to save the Beta 4 value to the EEPROM.
22. Turn off the printer and reinstall the ribbon mask holder and ribbon cartridge
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