Ricoh D3GF, Field Service Manual

Page: 184 / 187

6.Detailed Section Descriptions
178
Ethernet connection requirements:
The Color Controller E-25C network port supports the standard Ethernet network speeds and cable
categories listed in the following table.
Network speed Cable category
10BaseT Category 3 or later
100BaseTX Category 5 or later (4-pair/8-wire, short-length)
1000BaseT Category 5e or later (4-pair/8-wire, short-length)
The network port supports the following Ethernet cable specifications:

Unshielded Twisted Pair (UTP) cable

Straight-through cable (patch cable)
Specification Network port (upper port) Secondary Ethernet port (lower
port)
Port function Connect to LAN Used to connect to the printerU
Shielding type Unshielded Twisted Pair
(UTP)
Shielded Twisted Pair (UTP)
Straight-through or crossover
cable
Straight-through (patch
cable)
Crossover
Video Board
The Video Board functions include:

High speed data transmission

High speed data decompression

Engine output at maximum rated output speed
The video interface controls such aspects of the print job as:

Hardware decompression

Print quality enhancement technologies
HDD
The HDD is used to optimize many parts of the printing system as well as improving throughput and
ease-of-use. The HDD stores the following information:

System software

Non-volatile spooled print jobs

Additional storage for compressed pages

Non-volatile record of printed jobs (Job Log)

Resource storage space for downloaded fonts
Non-Volatile Memory

The 16 MB Flash Memory contains the BIOS, etc.

The 1Kbit EEPROM holds the MAC address data.
Volatile Memory

SDRAM is one 4 GB, Double Data Rate 4 (DDR4), 288-pin.