Xerox WorkCentre 3220 Service Manual

WorkCentre 3210/3220 Multifunction Printer Service Manual 2-29
Theory of Operation
Fax
Fax is implemented by a conexant DAA (Data Access Arrangement) solution
and is roughly composed of two kinds:
■ CX86710 (SFX336)): A modem chip which adds SSD (System Side
Device) for interfacing between LSD and DIB of FM336Plus Core.
■ CX20493 (LSD): LIU (Line Interface Unit) chip controlled by SSD and
satisfies each PSTN requirements by modulating internal configuration
with connecting telephone line.
Modem (SFX336) Specification
■ 2-wire half-duplex fax modem modes with send and receive data rates up
to 33,600 bps
■ V.17, V.34, V.29, V.27 ter, and V.21 Channel 2
■ Short train option in V.17 and V.27 ter
■ PSTN Session Starting: V.8 and V.8b is signaling
■ HDLC support at all speeds
■ Flag generation, 0-bit stuffing, ITU CRC-16 or CRC-32 calculation
and generation
■ Flag detection, 0-bit deletion, ITU CRC-16 or CRC-32 check sum
error detection
■ FSK flag pattern detection during high-speed receiving
■ Tone modes and features
■ Programmable single or dual tone generation
■ DTMF receiver
■ Tone detection with three programmable tone detectors
■ Receive dynamic range
■ 0 dBm to -43 dBm for V.17, V.29, V.27 ter and V.21 Channel 2
■ 9 dBm to -43 dBm for V.34 half-duplex
■ Digital speaker output to monitor received signal
s3210mfp-143
Modem
CX86710(SFX336)
DSP
SSD
System
Side
Device
Transformer
Transformer
CX20493
LSD
Line
Side
Device
Tel Line
Ext Line
LIU
SDAA
Sound Output
MC14051BD
Volume/Keyclick
Control
MC34119DR2
Speaker
Driver

Xerox WorkCentre 3220 Specifications

General

Print Technology	Laser
Print Resolution	Up to 600 x 600 dpi
Copy Resolution	Up to 600 x 600 dpi
Scan Resolution	Up to 4800 x 4800 dpi (enhanced)
Fax Transmission Speed	33.6 Kbps
Standard Paper Capacity	250 sheets
ADF Capacity	50 sheets
Monthly Duty Cycle	Up to 30, 000 pages
Functions	Print, Copy, Scan, Fax
Memory	64 MB
Duplex Printing	Manual
Operating System Compatibility	Windows, Mac OS, Linux
Connectivity	USB 2.0, Ethernet
Maximum Paper Size	8.5 x 14 in (Legal)