Wiring Diagrams
7-4 11/06 FaxCentre 2121/2121L
List of connectors
• CPU interconnect: connections to the CPU board.
Table 1: List of connectors
Connector Location ref. Number of pins Male/Female Type
CPU interconnect
(“liaison UC”)
P4205 22 Female Elbow, Top contact
Loudspeaker
(“HP”)
P4201 2 Female Elbow
LCD P5001 24 Female Elbow, bottom con-
tact
Smart card reader P4002 18 Female Elbow
Table 2: Connections to the CPU board
Pin Signal Input/Output Use
1 IOPUCE I/O Smart card serial data
2 GND - Ground
3 CLKPUCE I Smart card clock
4 RSTPUCE I Smart card reset
5 CVCC I Smart card supply control
6 FERCAP O Smart card present detec-
tion
7 SELALIM I Smart card supply select
8 GND - Ground
9 SCLKPUP I Control panel micro control-
ler synchronous serial link
clock
10 TXPUP I Serial data to control panel
micro controller
11 RXPUP O Serial data to control panel
micro controller
12 CSPUP I Micro controller chip select
13 VEILLE O Not used
14 REVEIL I Not used
15 STSC O Start of scan sensor
16 PSF O Sheet present sensor
17 OUVCAP O Cover open sensor
18 P3V3 - 3.3V
19 VALIM - 5V
20 ALIMCOUPE - 5V
21 HPM I Differential LF signal to
loudspeaker
22 HPP I Differential LF signal to
loudspeaker
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