Dell 2355DN Service Manual page 25

2.2.1.4 OPE Pannel Section
(1) Configuration
Operations Panel uses Main Control and separated OPE Chip Micom and work as inner program,
systemic operation is serial system which exchange Date with UART Port of Main Control. OPE Panel is
approximately composed of Micom part, Matrix part and LCD.
(2) Micom controller
Micom has ROM, RAM, I/O Port built-in and displays and lights LCD by CPU command of Main Control
Part and report Key recognition Data to Main Control Board.
(3) Operator Panel Button Functions
Common Keys
Press: To:
Stop an operation at any time, or return to main menu.
Reverts the current setting to the default values.
Start a job.
Function Keys
Press: To:
Deletes characters in the edit area.
Shows the jobs currently running.
You can copy both sides of an ID Card, such as a driver's license, to a single side of
paper.
Gives detailed information about this machine's menus or status.
Service Manual
Product spec and feature
Status LED Fax keys
2-16
Function keys Common keys