Ricoh B079 Service Manual page 340

BOARD STRUCTURE
The controller controls all applications, including copier, printer, scanner, and fax
applications. To add the optional printer, scanner, or fax applications, ROM DIMMs
must be installed on the controller. The fax option, however, also requires FCU and
NCU installation.
NOTE: The controller boards are machine specific and are not interchangeable.
The controller board for the B079 (35 cpm) must be installed in the B079
and controller board for the B082 (45 cpm) must be installed in the B082.
The following firmware and application software can be downloaded from the
Controller IC Card slot.
• Controller (System OS)
• Operation panel
• BICU (engine control)
• Printer
• Scanner
• Fax
• PostScript 3
• NIB
• FCU
CPU: Employs RM7065. Clock frequency: 300 MHz.
ASIC: Uses a dedicated chip developed for use with GW architecture. The CPU
and memory I/F employ a 120 MHz bus (32 bit). These components perform CPU
and I/F control and also control all of the following functions: memory, local bus,
interrupts, PCI bus, video data, HDD, network, operation panel, IEEE1284, and
image processing.
SDRAM: Comprises a 64 MB RAM chip, expandable with a 128 MB SDRAM.
System Flash ROM: Provided with an 12 MB Flash ROM for the system and NIB
firmware.
Flash ROM DIMM Slots: Two slots are provided for two ROM DIMMs (8 MB or 16
MB). Expansion slots are provided for the optional printer/scanner, and PostScript
3 applications.
NVRAM: 32 KB of NVRAM are provided for the system. NVRAM stores many
settings, including OS system log information, copier calendar, current system
settings, user accounts (max. 100) and all settings for the fax, printer, scanner, and
network. The NVRAM also has the RTC (Real Time Clock) for time management.
NOTE: Optional NVRAM, which can store up to 400 user accounts, can be
installed on the controller.
B079/B082
CÓPIA NÃO CONTROLADA
6-8
CÓPIA NÃO CONTROLADA
SM