2.3.2.9 SCF/HCF board
The SCF board is utilized to control an optional cassette in CLX -8540ND. Max 2 cassettes can be connected
under the default cassette in order to increase paper capacity. The SCF board consists a controller
(S3F443FX) and two motor drive ICs to control feeding timing. An UART port is used to communicate
between the Main-Engine controller and the SCF board. The board is also used in a HCF. Because key
functions of SCF and HCF are the same, SCFs and HCF can be used the same boards.
No. Signal Name Direction Active Level Description
1 24V POWER - +24V Power
2 3.3V POWER - +3.3V Power
3 GND POWER - Signal Ground
4 TxD OUT - Data Transmission
5 RxD IN - Data Receive
6 nBUSY OUT LOW SCF TxD Line Busy
7 nCMDREQ OUT LOW Command Request
8 Reserved1 I/O LOW Reserved
9 Reserved2 I/O LOW Reserved
To Next Page
Loading...
