Ope (Control Panel) Pba; Usb Host; Fax Section; Modem - Xerox WorkCentre PE120 Service Manual

Product Summary

4.6 OPE (Control Panel) PBA

The control panel board consists of various functin keys and an LCD to display system status, operator messages,
menu items, and errors. Communication between the OPE and the CPU on the main board is serial.

4.7 USB Host

The USB host board provides power to the USB connector to enable USB memory drive, used in conjunction with
the USB direct printing and Scan to USB fumctions.

4.8 Fax Section

4.8.1 Modem

Group3 Facsimile Modem (Entire FM336/314 Family)
External Handset Support (not implemented on SCX4720F)
Requires Discrete Line Interface Unit (LIU )
V.34 Half-Duplex Mode
V.90 PCM/V.34 Duplex Data Modes
Interface
Processor
4-20
/RTS
/CTS
TXD
TDCUK
XTCLK
V24
/RLSD
RXD
/RDCLK
/DTR
/DSR**
/RI*
/RD
/WR
/CS
/D[x:0]
Host
RS[4:0]
IRQ
/RESET
TXRQ*
RXRQ**
WorkCentre PE 120/120i
XTLI
XTLO
CLKIN
RIN
TXA1
TXA2
DH
RINGD
/TALK
FM336
Modem
EYEXY
EYESYNC
EY RCLK
SPKR
+SV
+3.3V
AGND
DGND
Crystal
OR
Oscillator
telephone
line
TIP
Line
RING
Interface
Optional
Eye Pattern
Generator
Speaker
Amplifier
Power Supply