Toshiba CTX28 Check the Power Factor Indicator and Reset Button, Power Supply BPSU672 Removal

Strata CTX670 Installation

Install Power Supply

Check the Power Factor Indicator and Reset Button

The front panel of BPSU672A provides a Power Factor LED and Reset button. If the cabinet power factor is exceeded by overload of PCBs, the PF LED will turn on.

If the PF LED indicator turns on, press the PF reset button with a pointed tool or pencil. If the PF LED turns off and does not turn on again it may have been turned on by a current surge while installing a PCB while the power supply was turned-on.

When a PF alarm is indicated, check that the cabinet power factor is not exceeded using the “Worksheet 7 – System Power Factor Check” on page 2-42. If the Power factor has been exceeded relocate any PCBs that are causing the PF to be exceeded.

Power Supply (BPSU672) Removal

1.Remove the front and right side covers (Figure 4-5) from the cabinet. Remove the right side covers of other cabinets as needed to disconnect wiring.

2.Turn the power supply Off, and disconnect the AC power cord, all ground wiring and reserve power cabling that is connected to the power supply.

3.Disconnect the back plane DC OUT cable plug from the DC OUT connector.

4.Loosen the four mounting screws securing the power supply to the cabinet and remove the power supply.

Power Supply Replacement

Install the replacement power supply per “Install Power Supply” on page 4-6.

4-8 Strata CTX I&M 06/04