Nortel DMS-100 Series Maintenance Manual page 458

12-110 Star Remote System card replacement procedures
NTTR47
in an RLD
(continued)
8
9
10
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16
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297-8353-550 Standard 05.01 March 2001
DANGER
Risk of electrocution
To eliminate the risk of electrical shock, remove external ac
power to the SRMO cabinet before accessing the ac panel.
Set the circuit breaker that supplies external ac power to the SRMO cabinet
to the OFF position.
Unlock and open the cabinet door. The door alarm generates a Major alarm
at the MAP terminal. Silence the alarm by pulling the interlock switch out.
Set the main and rectifier circuit breakers on the ac panel to the OFF position.
Use a flat blade screwdriver to loosen the screw to open the ac panel. Swing
the ac panel cover out and lift up to release the cover from the mounting
bracket. Put the cover on the SRMO cabinet floor.
Disconnect the main ac input load (L) wire that connects to CB1, the 16 A
main circuit breaker. Loosen the locking screw at the bottom of the circuit
breaker to release the wire.
Disconnect the ac neutral cable from J3-1 (TB1) on the ac panel.
Use a 7 mm nutdriver to loosen the ground wire nut. Remove the green and
yellow ground wire from the ac panel (not the ac panel cover).
Disconnect the ac panel output connectors J1 and J2.
Use a 10 mm nutdriver to loosen the nut that secures the ac panel to the back
wall of the SRMO cabinet. Remove the nut. Lift up on the ac panel to remove
it from the mounting bracket.
Install the replacement ac panel on the ac panel mounting bracket.
Install the 10 mm nut that was removed in step 16. Use a 10 mm nutdriver to
tighten the nut and secure the ac panel to the rear wall of the SRMO cabinet.
Make sure the flat washer and lock washer are behind the nut and not behind
the ac panel.
Connect the ac panel output connectors J1 and J2.
Install the ground wire. Use a 7 mm nutdriver to tighten the nut that secures
the green and yellow ground wire to the ac panel.
Connect the ac neutral cable to J3-1 (TB1) on the ac panel.
Connect the main ac input load (L) wire to CB1, the 16 A main circuit breaker.
Tighten the locking screw at the bottom of the circuit breaker to secure the
wire.
Install the ac panel cover. Use a flat blade screwdriver to tighten the screw to
secure the ac panel.
Close the circuit breaker that supplies external ac power to the SRMO
cabinet.