Motorola MTR2000 T5544 Instruction / Field Service Manual page 135

STOP
WARNING
STOP
IMPORTANT
STOP
IMPORTANT
68P81096E17-E
09/30/05
• All spare modules should be kept in a conductive bag for storage and
transporting.
• When shipping modules to the repair depot, always pack in conduc-
tive material.
When wearing a Conductive Wrist Strap, be careful near sources of high
voltage. The low impedance provided by the wrist strap also increases
the danger of lethal shock from accidentally touching high voltage
sources.
Care of Gold-Plated Connector Contacts
The connections between the modules and the station backplane board are
made with gold-plated connector contacts to provide maximum reliability.
Gold-plated materials do not form a non-conductive oxide layer, and
therefore should not require cleaning under normal conditions.
When the modules have been subjected to many extraction/insertion cy-
cles, or if the station is operated in a dusty environment, the contacts may
require cleaning. Do not use an eraser or any type of abrasive substance
to clean either the module or backplane connector contacts. Any type of
abrasive cleaning (typically employed for cleaning non gold-plated con-
tacts) can result in the removal of the gold plating or bending of the con-
nector contacts.
If cleaning of the gold-plated contacts is required, use a soft cloth damp-
ened with alcohol to lightly wipe the contacts. Be sure not to touch the
contact surfaces with your fingers, as finger oils and salts can contaminate
the contact surfaces.
Power Down Station Before Removing/Inserting
Modules
Before removing or inserting the station cluster or an option module into
the station to engage the backplane connector, be sure to turn off the sta-
tion power by turning off the breaker at the ac source, or disconnecting the
station ac line cord.
If the station is equipped with battery backup, disconnecting the station
ac line cord will not turn the station off. You must also disconnect the
battery backup cable from the station power supply module. Remem-
ber to reconnect the battery cable before restoring the station to opera-
tion.
Front Panel Removal
Removal of any of the station modules or option cards necessitates first re-
moving the front panel, as detailed in Section 3, Removing/Replacing Sta-
tion Front Panel.
Troubleshooting
21