Detailed Section Descriptions; Overview - Ricoh B156 Service Manual

5. DETAILED SECTION DESCRIPTIONS

5.1 OVERVIEW

GWFCU3
The basic fax unit consists of two PCBs: an FCU and an MBU.
The FCU controls all the fax communications and fax features, in cooperation with
the controller board. The MBU contains the ROM and SRAM. Also, the FCU has an
NCU circuit.
Fax Options:
1. Extra G3 Interface option: This provides one more analog line interface. This
allows full dual access. Two extra G3 interface options can be installed.
2. Memory Expansion: This expands the SAF memory and the page memory
(used for image rotation); without this expansion, the page memory is not big
enough for image rotation at 400 dpi, so transmission at 400 dpi is not possible.
SM
CÓPIA NÃO CONTROLADA
FCUIF
MBU
Memory DIMM
SG3
115
CÓPIA NÃO CONTROLADA
OVERVIEW
to BICU
CCUIF
SG3
B750D501.WMF
B750