Ricon B156, Service Manual

Page: 735 / 781

VIDEO DATA PATH
SM 121 B750
Fax Op
tion
Type 32
32
B75
0
5.3.2 RECEPTION
First, the FCU stores the incoming data from either an analog line to the SAF
memory. (The data goes to the FACE3 at the same time, and is checked for error
lines/frames.)
The FCU then decompresses the data and transfers it to page memory. If image
rotation will be done, the image is rotated in the page memory. The data is
transferred to the BICU.
If the optional G3 unit is installed, the line that the message comes in on depends
on the telephone number dialled by the other party (the optional G3 unit has a
different telephone number from the main fax board).
JBIG Reception
When data compressed with JBIG comes in on PSTN-1 (the standard analog line),
the data is sent to the QM-CODER for decompression. Then the data is stored in
the page memory, and transferred to the BICU.
When data compressed with JBIG comes in on PSTN-2 (optional extra analog
line), the data is sent to the QM-CODER on the SG3 board for decompression.
SG3
SAF
DCR
Page Memory
FACE3
FBI
QM-CODER
DCR
BICU
Printer
CCD (DCR)
QM-CODER
FCU
NCCP
NCU
Analog G3
Modem
NCU
Analog G3
Modem
B750D512.WMF