Gp 18 Functioning - Xerox FaxCentre 2121 Service Manual

GP 18 Functioning

The equipment is a Group 3 multifunction fax functioning in accordance with the UIT-T
T.30 recommendation.
It consists of a laser printer, a CIS (Contact Image Sensor) color sheet feeder scanner, a control
panel with a 64-key alphanumerical keyboard and an LCD screen with 2 lines of 16 characters.
Its main functions are:
• Fax transmission and reception on the switched telephone network using the V34 protocol
(max. 33.6 kbits/s) and the V17 protocol (max. 14.4 kbits/s)
• SMS (Short Message Service) transmission.
• Internet e-mail transmission and reception on the switched telephone network using the V90
protocol.
• Photocopying.
• Local printer and scanner, via a USB interface.
• Network printer and scanner, via a local area network (LAN).
• E-mail transmission and reception on the local area network.
Note: The machine does not have any facilities for managing an external telephone answering
machine connected on the same line (with a stackable plug). More generally, it is not designed to
function with any telephone equipment connected in parallel on the same phone line. It is
preferable to used a dedicated phone line for the fax. This allows the user to leave the fax
permanently in service and to receive communications without user intervention. The fax is
equipped with a standard telephone plug for connection to the switched telephone network. The
electronics of the machine consist of a control panel board and a CPU board. For the printer,
refer to the printer section. Electrical power is supplied by the printer.
Note: The ECP and LAN interfaces conform to the SELV (Safety Extra-Low Voltage, very low
safety voltage) safety level. The phone line input conforms to the TNV-3 safety level.
Before performing any service on the CPU board, disconnect the phone lead. Before performing
any service on the CPU electronic circuit board, it is also preferable to:
• Set the power switch to the OFF position.
• Disconnect all external interconnect leads (LAN, ECP).
• Unplug the power cord.
FaxCentre 2121/2121L
General Procedures and Information
11/06 6-67