Replacing The Alarm (Aw1A) Units - Fujitsu FLM 150 ADM Maintenance And Trouble Clearing

Maintenance and Trouble Clearing
FJTU-320-515-480
4.5

Replacing the Alarm (AW1A) Units

4.5.1 Overview
This procedure lists the steps required to replace a failed AW1A Alarm and
Orderwire unit.
Refer to the Application Engineering practice, FJTU-320-515-120,
Appendix C, Hardware Options, for descriptions of plug-in unit hardware option
settings.
Refer to the Unit Descriptions practice, FJTU-320-515-000, for hardware option
default settings.
Refer to Section 2, Plug-In Unit Front-Panel Devices, in this practice for
descriptions of LEDs associated with each plug-in unit, and other front-panel
devices.
Note: The strap options should all be set the same for each type of alarm (i.e., all MJ or all
CR).
WARNING:
During unit replacement, seat all plug-in units with a slow, but firm motion. Do not
push them quickly into the slot. Many critical units have longer power connector pins
to minimize power surges during unit replacement. A slow insertion method will
ensure that plug-in units are not damaged.
WARNING:
Wear an electrostatic discharge wrist strap with a minimum resistance of 1 megohm
when handling FLM units to prevent damage to the units. Before using the wrist strap,
check for opens, shorts and minimum resistance value. If the strap does not pass
these checks, do not use it.
Issue 9, May 1999 FNC and FNC Customer Use Only
4.5: Replacing the Alarm (AW1A) Units
Vol. ll, Page 480.4-14