Page 1
NIB C4000
Page 2
17 January, 2001 BLOCK DIAGRAM
1. OVERVIEW
1.1 BLOCK DIAGRAM
Controller
Board
Option Bus I/F
Ethernet
Controller
Filter Module
LAN I/F
CPU
ASIC
Flash ROM
1MB
SDRAM
8MB (64Mb)
EEPROM
1Kb
Network
Environment
G063O713.WMF
Peripherals
G678N-1
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COMPONENT LAYOUT 17 January, 2001
1.2 COMPONENT LAYOUT
1.2.1 NETWORK INTERFACE BOARD DIAGRAM
Flash
ROM
MB87L1231
1.2.2 DEVICES
ASIC
SDRAM
CPU
HD6417612
Ethernet
Controller
AM79C973
RJ-45
LED4(G)
LED3(G)
EEPROM
LED1(Y)
SW2
G063O705.WMF
Device Description
CPU HD6417612RF
ASIC MB87L1231
Flash ROM MBM29LV800BA-70PFTN (8 Mbit)
SDRAM 64Mbit: 100MHz
EEPROM M93C46-WMN6 (1kbit)
Ethernet Controller AM79C973KC/ W
G678N-2
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17 January, 2001 DETAILED SECTION DESCRIPTIONS
1.3 DETAILED SECTION DESCRIPTIONS
1.3.1 OVERVIEW
This network board can manage both 100Base-TX and 10Base-T. It has a
maximum data transfer speed of 100Mbps.
The auto-negotiation function automatically switches the communication speed.
The controller board supplies the power source (+5V) and provides the reset
signal. The controller board communicates with the network interface board
through the option I/F connector.
The functions of the LEDs and the switch are as follows.
Functions
LED1
LED2 Not used
LED3
LED4
SW1
Displays the operating stat us.
ON: Ready, OFF: Busy
Displays the LAN Ty pe.
ON: 100 Base-TX, OFF: 10 Ba se-T
Displays the link stat us.
ON: Link safe, OFF: Link failure or Link disable
Resets the NVRAM on the netw ork interface board.
NOTE: This board has the hardware to execute a “Summary Printout”.
However, it does not function on this printer due to the contro ller
specifications.
1.3.2 NVRAM RESET
SW1 resets the NVRAM on the network interface board.
This board has the hardware to execute a "Summary Printout". However, it does
not function on this printer due to controller specifications.
NVRAM Reset Procedure
This procedure resets all the network settings to the defaults.
• IP address, Subnet Mask, Default Gateway Address, Access Control Mask,
Network Boot, Frame Type (NetWare), Active Protocol, and so on
1. Turn on the main switch while pressing SW1. Keep pressing SW1 for 15
seconds.
2. Release SW1 for 3 seconds, press it again for 3 seconds, and then release it.
3. Turn the main switch off/on to complete the NVRAM reset procedure.
There is a margin of less than 1 second for error. Use a watch to measure the
time periods as accurately as possible.
4. Print out the configuration page, and then check the settings. If the procedure
failed, the previous settings remain. Repeat the above procedure until the old
settings have been cleared.
Peripherals
G678N-3
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