NEC NC1600C Service Manual page 211
Dlp cinema projector
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Also See for NC1600C:
- User manual (57 pages) ,
- Specifications (2 pages) ,
- Important information manual (72 pages)
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4 4 4 4 4 Ethernet interface circuit
For the Ethernet interface circuit, two circuits are installed in this PWB.
IC7400, M7400 (for local network)
IC7500, M7500 (for global network) : Connected to the ETHER PWB (Hub) in the projector. This port is
Both of these two circuits are applicable to the 10Base-T / TX UTP (Unshielded Twist Pair cable).
In addition, the MAC address and the IP address are set up individually for each port.
MAC address : 6 bytes of XX XX XX XX XX XX
00 30 13 1f 00 01 ~ Used for manufacturing in Japan
00 30 13 1f 08 01 ~ Used for manufacturing in China
Local network port (IC7400, M7400)
IC7400 is a PCI bus, which is connected to the ASSIST III (IC7200). IC7400 is fed power of the two systems;
Standby +3.3V and +2.5V that is generated by the regulator IC7300.
A 25MHz quartz crystal oscillator of X7400 is used to generate the clock signals for internal driving in the
Ethernet interface circuit. The setup values for the operation mode of IC7400 and the MAC address values
are stored in the EEPROM IC7401.
Using the PCI bus of the ASSIST III, the CPU performs data exchange with this Ethernet port.
Connector M7400 is of the RJ-45 type and has a built-in transformer.
This port is used as a communication port with the MM (Multimedia Switcher) and the touch panel.
The MAC address is written in while PWB assembly is carried out at the factory. As a barcode label, the
written values are attached around the rear side of the connector M7400 on the PWB.
Since this is an exclusive communication port with optional devices of the projector, a local default value is
set up for the IP address.
Global network port (IC7500, M7500)
IC7500 is also a PCI bus, which is connected to the ASSIST III (IC7200). IC7500 is fed power of the two
systems; Standby +3.3V and +2.5V that is generated by the regulator IC7300.
A 25MHz quartz crystal oscillator of X7500 is used to generate the clock signals for internal driving in the
Ethernet interface circuit. The setup values for the operation mode of IC7500 and the MAC address values
are stored in the EEPROM IC7501.
Using the PCI bus of the ASSIST III, the CPU performs data exchange with this Ethernet port.
Connector M7500 is of the RJ-45 type and has a built-in transformer.
This port is used as a communication port with the MM (Multimedia Switcher) and the touch panel.
The MAC address is written in while PWB assembly is carried out at the factory. As a barcode label, the
written values are attached around the rear side of the connector M7500 on the PWB.
The devices to be connected to this port can be a PC, a video server, and the like. IP address setup is made
at the time of shipment, but such setting can be made according to the working environment of the system
and the network where this projector is used.
"Confidential, Do Not Duplicate without written authorization from NEC."
CIRCUIT DESCRIPTION
: Connected to the MM (Multimedia Switcher) and the touch panel via
the ETHER PWB (Hub) in the projector. Used for communication with
these devices.
used to establish a LAN with external devices.
8-6
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