NEC Electra Elite 192 Hardware Manual page 237

Electra Elite
System Hardware Manual
6.1.3 LED Indications
The front edge of the ETU has 13 LEDs. (Refer to
5-52 ACD(8)-U10
status as follows:
On
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Off
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The Live LED is red when ETU is receiving power.
The MB LED indicates the status of the MB switch.
The DOS (BIOS) LED is red when a BIOS error has
occurred.
The Bicolor (BCLR) LED indicates application status as
follows:
Red
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Green
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The hard disk drive (HD) LED flashes red when HDD is
active.
 Do not reset the ETU while the HD LED is flashing.
6.1.4 Connectors
The ACD(8)-U10 ETU has two connectors:
J9
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9-pin RS-232(COM1)
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6.1.5 Installation Precautions
The ETUs make extensive use of CMOS technology that is
very susceptible to static electricity.
 Static discharge must be avoided when handling
ETUs.
Always use the following precautions:
Wear a grounding strap anytime you handle the ETU.
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Make all ETU DIP switch setting changes before
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inserting it in the KSU. Ensure that Make Busy switch
is off.
Carry ETU in a conductive polyethylene bag to
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prevent static electricity damage.
ETU.) LEDs CH1~CH8 indicate the port
Port Busy
Port idle or not used
DOS started (ACD application not
ready)
ACD application is running
Connects to the backboard
Local Serial connector for
direct connection.
Issue 6
Figure
5 - 91