Servicing Operations - Epson EPL-N2000 Service Manual

Disassembly and Assembly

3.1.5 Servicing Operations

This section describes the special service modes and combinations of switches used to enter each
mode. The modes listed in this section are only to be operated by qualified service people for
repair. Therefore the specifications for these modes were eliminated from the user's guide.
EEPROM Initialization
The EEPROM, mounted on the controller board, is used to save settings selected through the
SelecType mode and the printer status information such as the page counter.
This function resets all user settings and printer status information to the factory default
settings.
Switches to use:
Turn on the printer while holding down the On Line, Continue, and Menu switches.
Use of this function must be limited to the the conditions listed below, since it also clears page
counter information.
EEPROM is replaced.
The C207 MAIN Board, along with EEPROM, is replaced.
When refurbishing the EEPROM.
Page Counter Clearance
The page counter information, which can be checked through the SelecType, is stored on the
EEPROM. The page counter clear function resets the page counter to "0".
Switches to use:
Turn on the printer while holding down the On Line, Item, and Menu switches.
Flash IC Card Clear
When the optional flash IC card is used, the saved information in the card is erased with this
mode. It's only available when the card is inserted in card slot A.
Switches to use:
Turn on the printer while holding down the SelecType, Item, Value, and Enter switches.
"Formatting Card" appears, which is indicated on the LCD.
"Write Error Card" is indicated in place of "Formatting Card" under the following conditions.
The IC card inserted is not acceptable.
The card is write protected.
Flash ROM Update
This function is used to update a Flash ROM.
Switches to use:
1. Turn On the printer while holding down the On Line, Menu, Item, and Value
switches.
2. Press the Item, Value, and Enter switches while "Program Device" is indicated.
The parallel interface (B connector) starts sending data when "Please Send Data" is indicated.
3-4
CAUTION
EPL-N2000 Service Manual
Rev. A