Emerson 752I Setup:

Setup: Troubleshooting

Katana®752i User’s Manual 10006024-04

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The Emerson Katana®752i circuit board typically requires about 35 watts of power when

performing a simple memory test with no PMC/PTMC modules installed. The exact power

requirements for the Katana®752i circuit board depend upon the specific configuration of

the board, including the CPU frequency, amount of memory installed on the board, and

PTMC configuration. Please contact Emerson Technical Support at 1-800-327-1251 if you

have specific questions regarding the board’s power requirements.

Note: The power value is an approximate–not measured–value.

The Emerson Katana®752i circuit board is specified to operate in an ambient air tempera-

ture range of 0° to +55° Centigrade. This range meets the NEBS Telecordia GR-63 specifica-

tion. The entire chassis should be cooled with forced air. The recommended minimum air

flow rate is 11 cubic feet/minute. The exact air flow requirement depends upon the chassis

configuration and the ambient air temperature. The Katana®752i board’s relative humidity

and storage temperature ranges fully comply with NEBS Telecordia GR-63 specification.

In case of difficulty, use this checklist:

❐Be sure the Katana®752i circuit board is seated firmly in the card cage.

❐Be sure the system is not overheating.

❐Check the cables and connectors to be certain they are secure.

❐If you are using the Katana®752i monitor, run the power-up diagnostics and check the

results. Chapter describes the power-up diagnostics.

❐Check your power supply for proper DC voltages. If possible, use an oscilloscope to look

for excessive power supply ripple or noise (over 50 mVpp below 10 MHz).

❐Check that your terminal is connected to a console port.

The Katana®752i monitor uses values stored in on-card NVRAM (I2C EEPROM) to

configure and set the baud rates for its console port. The lack of a prompt might be

caused by incorrect terminal settings, and incorrect configuration of the NVRAM, or a

malfunctioning NVRAM.

To force the board to boot using the default settings, first configure the terminal

parameters to: 9600 baud, no parity, 8 data bits, and 1 stop bit. Then, reset the board

while holding down the ‘s’ key. After the board boots to the prompt, you can initialize

the configuration settings to their factory defaults with the following command: