Ricoh A-P3 Service Manual page 178

6 November, 2001
1. CPU. Employs RM7000A-300. Clock frequency: 300 MHz.
2. ASIC: CELLO. Uses a dedicated chip developed for use with GW architecture.
These components perform CPU and I/F control and also control: memory,
local bus, interrupts, PCI bus, video data, HDD, network, operation panel, and
IEEE1284.
3. SDRAM. Comprises a 64 MB RAM chip, expandable with a 64 MB or 128 MB
or 256 MB SDRAM.
4. System Flash ROM. Provided with an 12 MB Flash ROM for the system OS,
MIB, PJL, RPCS, PostScript3 and PCL6.
5. NVRAM. 32 KB of NVRAM are provided for the system. The NVRAM stores
many settings, including OS system log information settings, calendar settings,
current system settings, all printer settings, and network settings. The NVRAM
also employs an RTC (Real Time Clock) for time management.
6. HDD. A 3.5" HDD (more than 10 GB) can be connected using an IDE I/F. The
hard disk is partitioned as shown in the table below.
Area
File System 1
File System 2
Image TMP1
2000 MB
Image TMP2
Image TMP3
Job Log
Size
500 MB Font download, form registration.
500 MB Job spool area.
Collation, sample print and
protected print.
Collation
500 MB
Collation and protected print.
500 MB
10 MB Job log.
Usage
Remain after power off/on.
Erased at power off.
Erased at power off.
Erased at power off.
Erased after power off.
Remain after power off/on.
6-7
BOARD STRUCTURE
Remarks