CHAPTER 6
Replace Power Supply
The router provides a choice of two different power supplies:
• DC power—The DC power supply uses two-position terminal block-style connector with positive latching
or securing, and labeled connections for +48V, GRD, -48V. The terminal block connector is of suitable
size to carry the appropriate AWG wire size to handle the input current of the power supply. No ON/OFF
switch is provided.
• AC power—The AC power supply has an IEC 320-type power receptacle and a 15 Amp service connector.
You can use standard right angle power cords with the AC power supply. The power supply includes a
power cord retainer. No ON/OFF switch is provided.
You can install dual power supplies for redundancy.
Products that have an AC power connection are required to have an external SPD provided as part of the
building installation to comply with the Telcordia GR-1089 NEBS standard for electromagnetic compatibility
and safety.
Note
Do not use interface module and power supply ejector handles to lift the chassis; using the handles to lift the
chassis can deform or damage the handles.
Caution
• Remove the DC Power Supply Module, on page 61
• Install the DC Power Supply Module, on page 62
• Remove the AC Power Supply Module, on page 63
• Install the AC Power Supply Module, on page 64
Remove the DC Power Supply Module
This section provides information about removing and replacing the DC power supply.
Before performing any of the following procedures, ensure that power is removed from the DC circuit.
Statement 1003
Warning
Cisco Network Convergence System 540 Large Density Routers Hardware Installation Guide
61
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