Power Supply (Bpsu672A) Removal; Power Supply Replacement - Toshiba STRATA DK14 Installation And Maintenance Manual

3. Slide the power supply into the right side of the cabinet so that its four mounting holes align
with the four cabinet mounting holes (see
wires are positioned between the FG wire holder and the power supply.)
The backplane FG wires are not safety grounds: they are required for proper system CO
Note
line operation.
4. Plug the Back Plane DC OUT cable plug into the DC OUT connector on the power supply.
(The plug has a guide key on it to ensure that it is plugged in correctly.)
5. Secure the FG wire spade lug to the power supply with the FG screw.
6. Secure the power supply to the cabinet with the four provided screws.
7. If the cabinet is the Base Unit, a standalone Remote Expansion Cabinet, or the first in a stack
of Remote Expansion Cabinets. Set the Exp/Base switch to the "Base" position (see
7-3).
8. If the cabinet is an Expansion Unit, set the Exp/Base switch to the "Exp" position.
Important! The power supply set as "Base" is the master and has On/Off control over all other
power supplies, which are designated as slaves. If the master power supply is turned
Off or On, all other power supplies will automatically turn Off or On. (Individual
slave power supplies must be turned On.)
9. See Figure 7-3
10. Install power supplies in all cabinets, using Steps 1~9 of this procedure.
11. Install the Base and optional Expansion Cabinets, ground wiring, and cabinet bonding plates,
AC and reserve power cabling, and PCB cabling per the
Sequence" on
Power Supply testing procedures are provided in the Fault Finding chapter, which should
Note
be referred to if it is suspected that the power supply does not work properly.

Power Supply (BPSU672A) Removal

1. Remove the front and right side covers
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
Strata DK I&M 6/00
to ensure that the power supply is properly installed.
Page 7-6.
(Figure
Figure 7-5). (Make sure that the two backplane FG
"Recommended Installation
7-5) from the cabinet. Remove the right side
"Install Power Supply" on
DK424i Installation
Step 1: Install Power Supply
Figure
Page 7-6.
7-7