ADTRAN Total Access 3000 System Manual page 193

5. Install 1 Amp fuses in the slots in the fuse and alarm panel that power the fan
module.
6. Using a voltmeter, place the common (normally black) lead on the fan module
-48 VDC RET A terminal and the DC volts (normally red) lead on the fan module
-48 VDC A terminal. The reading should be in the operating range of -42Vdc to
56Vdc, with a nominal value of -48 VDC. Note the "-" polarity.
7. Using a voltmeter, repeat step 6 using the -48 VDC RET B and -48 VDC B
terminals.
8. Remove the fuses/turn off the circuit breakers from the fuse and alarm panel slots
powering the fan module.
9. Use a #1 Phillips-head screwdriver to replace the protective guard over the power
terminals. (It was removed in 1.4.4 step 3.)
1.5 Remove Rear Plastic Guard
The large rear Plexiglass guard covering the backplane is a safety feature of the Total
Access 3000/3010 shelf designed to keep personnel and equipment from contacting
potentially high voltage exposed at some backplane locations. Following the sequence
of steps outlined in this NTP will allow the service provider to remove the guard once,
make all the necessary Total Access 3000/3010 backplane connections, and then
reinstall the guard.
Wire tie anchors are pre-installed on the backplane 64-pin/50-pin Amp
connector's cable ends. It is easier to thread the wire ties through the anchors
while the backplane guard is removed. ADTRAN recommends using the wire
ties to secure the 64-pin/50-pin Amp connectors in place. Thread the wire ties
through the anchors while the rear plastic guard is off.
1.6 Wire Clocks
Total Access 3000/3010 accepts either T1 or composite clock inputs from an external
timing source. See the Application Guide section of this system manual for your
particular application to determine whether this step is appropriate for your intended
Total Access 3000/3010 application. As an office repeater bay deploying HDSL or
T1, no clock input is required. As an office repeater bay deploying ISDN, a composite
clock input is required.
Total Access ® 3000/3010 System Manual
TOTAL ACCESS 3000/3010
For details, go to: DLP-701.
NOTE
6TANTP501-1E
NTP-501
Page 9 of 22
© 2002, ADTRAN, Inc.