How a Fax Works, About Facsimile Compatibility

Maintenance and Troubleshootina continued

5.If a ‘DOCUMENT JAM’ occurs, dampen the lint- free cloth with water, and wipe the ADF rubber and ADF roller clean as shown below.

Note: If you still have problems in feeding documents automatically after cleaning the rubber and the roller, you may have to replace them. Contact your dealer.

6.Assemble the white roller in reverse order of disassembling. Then close the cover.

How a Fax Works

Facsimile is a system of sending printed or other graphic information from one location to another by producing a copy or “facsimile” of that information d the remote location. A fax unit transmits audio ones over the same telephone lines you use for lerson-to-person conversation.

The facsimile process involves three basic steps:

1.Reading and converting the document into electronic signals (audio tones).

2.Sending, or transmitting, the signals through a telephone system, to another fax unit.

3.Converting the received signals into a “facsimile” of the transmitted document.

This is a simplified explanation of the actual facsimile process. Although all fax units operate by this same basic process, specific operating procedures differ from unit to unit.

About Facsimile Compatibility

T h e CCITT ( C o n s u l t a t i v e C o m m i t t e e f o r International Telephone and Telegraph), which sets worldwide standards for data communication, classifies facsimile devices into three groups. The grouping is based on how a fax unit sends information, in what form, and at which speed.

To simplify, you can think of fax units as being grouped by speed: Group 1 includes 6 minute units, Group 2 includes 3 minute units, and Group 3 includes sub-minute units. These speeds refer to the amount of time it takes a fax unit to send or receive a standard business letter over the telephone lines.

Your facsimile is compatible with CCITT G3 mode units.