Paradyne CPX-1000 manual Power Supply Fan Module Removal, Replacing, Inoperative, Fans

5. Repair Procedures 1000-A2-GN22-00

Power Supply/

Fan Module

Removal

Step 1

Each CPX is equipped with 3 power supply/fan modules. Removing a single power supply does not interrupt system operation. To remove a power supply/fan module, see Figure 5–1and follow these steps:

Loosen the two screws located at the bottom of the module.

OUT OF	OUT OF
SERVICE	SERVICE
IN	IN
SERVICE	SERVICE
		OSEURTVOICFE
		IN
		SERVICE
Lift Out Filter	Remove 4 Screws	Pull To Remove Fan
		0178

Figure 5–1. Power Supply/Fan Module Removal

		Danger: Shock Hazard
		The CPX uses 48VDC plant battery for primary power. This
		circuit can supply a level of current that can be fatal.
		Use extreme caution when working around this voltage,
		during installation, operation, testing, and adjusting.
		Remove the voltage at its point of distribution to the CPX
		before you connect or disconnect equipment power leads.
	Step 2	Grip the handle on the front of the module, and slowly pull it
		straight out of−the chassis. Support the module from the bottom,
		and lift the back edge of it over the front lip of the chassis.
	Replacing	If a fan in a power supply/fan module has failed, replace the
Inoperative		affected fan assembly (Figure 5–1).
Fans		To replace (hot swap) a fan without removing the module or
		turning off power:
	Step 1	Remove the filter from the power supply to expose four screws.
	Step 2	Loosen the four screws that attach the fan to the power supply.
	Step 3	Pull the handle of the power supply straight out.

5-2 February 2003