Alcatel-Lucent 7750 SR-a4 Installation Manual page 184

Removing and Replacing a PSU
184
ii. Tighten the screw with a Phillips torque screwdriver. Do not over-tighten. The
recommended torque is 3 lbf-in (0.339 N
iii. Replace the safety cover that you removed from the terminal block in
Step 10. Check that the DC supply wiring is correct.
Step 11. Restore the external power that was disconnected or turned off at the branch circuit
device. See 7750 SR-a –48 VDC PSU LED and Connectors
.
m).
7750 SR-a4 and SR-a8 Installation Guide
Step 6.
for more information.