Panasonic Digital Business System 576 Technical Manual Section 300

							 576-13-300 DBS 576 (USA), issued 6/2/98 3-1
Chapter 3. Cabinet Installation
This chapter explains how to prepare for a single cabinet installation, how to remove 
and replace the cabinet cover, install the battery and install cards.
Installation Location
Guidelines
• Before deciding where to install the single base cabinet, check the external 
dimensions shown below, the area required for maintenance, and the 
Environmental Conditions described in Chapter 1 (page 1-4).
Figure 3-1. Single base cabinet dimensions and maintenance area
Notes:oHatched area  indicates the area that should be provided for mainte-
nance.
oThe dimensions shown in parenthesis indicate the dimensions required 
when the MDF interface cable is wired from the right of the cabinet. 
						

							Chapter 3. Cabinet Installation Section 300-Installation
3-2  DBS 576 (USA), issued 6/2/98 576-13-300
Removing and Replacing Covers
Guidelines
• Both left and right side covers can be removed. The following describes how to 
install and remove the left side cover. The identical procedure can be used for the 
right side cover.
• Replace the respective covers after the installation work has been completed.CAUTION:
• Turn the power switch and the external breaker OFF, and disconnect the 
AC cable before removing any covers. 
						

							Section 300-Installation Chapter 3. Cabinet Installation
576-13-300 DBS 576 (USA), issued 6/2/98 3-3
Front Cover
Installation
Removing the front cover
1.  Remove the four screws from the front cover.
2.  Pull the bottom of the front cover out by about 3/4”.
Note:Do not exert excessive force when pulling out the bottom of the front cover 
as doing so may distort the claw slots.
3.  Gently lift the cover off by sliding it up and away.
Replacing the front cover
1.  Hook the front cover onto the front cover mounting claws of the cabinet.
2.  Secure the four screws.
Figure 3-2. Removing and replacing front cover of base cabinet 
						

							Chapter 3. Cabinet Installation Section 300-Installation
3-4  DBS 576 (USA), issued 6/2/98 576-13-300
Side cover
Installation
Removing the side cover
Note:The front cover must be removed before the side cover may be removed.
1.  Remove the two screws from the side cover.
2.  Open the edge (with the screws) of the cover about 1”.
Note:Do not exert excessive force when pulling out the side cover as doing so may 
damage the claw slots.
3.  Gently lift the cover off by sliding it forwards.
Replacing the side cover
1.  Hook the side cover onto the top and bottom side cover mounting claws of the 
cabinet.
2.  Secure the two screws.
Figure 3-3. Removing and replacing side cover of base cabinet 
						

							Section 300-Installation Chapter 3. Cabinet Installation
576-13-300 DBS 576 (USA), issued 6/2/98 3-5
Top Cover (Base Cabinet Only)
Installation
Removing the top cover
Note:The front cover must be removed before the top cover may be removed.
1.  Remove the two screws from the top cover.
2.  Pull the top cover out about 2”.
Note:Do not exert excessive force when pulling the top cover as doing so may 
damage the claw slots.
3.  Gently lift the top cover off by sliding it up and forwards.
Replacing the top cover
1.  Hook the top cover onto the top cover mounting claws of the cabinet.
2.  Secure the two screws.
Figure 3-4. Removing and replacing top cover of Base Cabinet 
						

							Chapter 3. Cabinet Installation Section 300-Installation
3-6  DBS 576 (USA), issued 6/2/98 576-13-300
Cabinet Installation
Guidelines
• If you are installing two or more cabinets, refer to Chapter 4, Installing 
Additional cabinets (page 4-1).
Floor Mounting Installation
1.  Drill 4 holes in the floor for bolt anchors.
Note:Check the positions of the 4 bolt holes in the bottom of the cabinet, shown in 
Figure 3-1, before drilling the holes.
2.  Bolt the cabinet to the anchors in the floor through the bolt holes in the bottom 
frame.
Figure 3-5. Securing the cabinet to the floor (base cabinet shown)CAUTION:
• Turn the power switch OFF, and make certain the AC cable is 
disconnected before installing the cabinet.
• Handle the cabinet carefully to avoid damage.
• Do not attempt to move the cabinet without assistance.
• The cabinet is heavy and should be secured to a wall so that it does not 
topple in the event of earthquake, etc.
• Remove all cabinet covers before installation (see page 3-2). 
						

							Section 300-Installation Chapter 3. Cabinet Installation
576-13-300 DBS 576 (USA), issued 6/2/98 3-7
Wall Mounting Installation
Prior to mounting the DBS 576 to the wall, the plywood mounting backboard 
must be prepared as follows:
• Use 1/2” or larger plywood sized for the complete DBS 576 system.
• Secure the board to the wall with at least four #10 1 3/4” sheet metal screws 
for a single cabinet system. Each screw must be installed to the metal studs.
• Two or more additional screws should be installed into the metal studs for 
each additional cabinet to support the additional weight.
Figure 3-6. Cabinet plywood mounting backboard
1.  Attach wall-mounting brackets on the rear of the cabinet as shown in the figure 
below.
Figure 3-7. Wall-mounting Installation: Attaching the Wall-mounting Bracket 
						

							Chapter 3. Cabinet Installation Section 300-Installation
3-8  DBS 576 (USA), issued 6/2/98 576-13-300
2.  Temporarily fasten the 4 wall-mounting screws (#10 flat head recommended) to 
the wall.
3.  Lift up the Base cabinet, and hook it onto the 4 screws that are temporarily 
fastening the wall-mounting angle.bracket.
4.  Completely tighten the temporarily fastened screws.
Figure 3-8. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-1
Grounding
Guidelines
• The service ground cable must be 14 AWG minimum. It is recommend that the 
ground cable at least 12 AWG (stranded).
• Resistance to ground must be 10
 Ohms or less. CAUTION:
• Turn the power switch OFF, and make certain the AC cable is not plug 
in before grounding the cabinet.
• Be sure to attach an EMI filter to the AC cable to reduce EMI 
interference.
• For safety reasons, the DBS 576 must remain grounded at all times. 
This ground may be either via the power supply ground or the attached 
ground lead. 
						

							Section 300-Installation Chapter 3. Cabinet Installation
576-13-300 DBS 576 (USA), issued 6/2/98 3-9
Installation
1.  Connect the Frame Ground terminal on the top of the front panel of the power 
supply unit to the cabinet chassis using a grounding wire.
2.  Connect the base cabinet chassis to the building service ground using a 
grounding wire.
3.  Connect the AC cable or Ground cable to the cabinet chassis.
4.  Install an EMI filter on the AC cable.
Figure 3-9. Grounding the Master Cabinet
Battery Backup (VB-44025)
Guidelines
• When installing batteries for battery backup, each cabinet must have a separate 
set of batteries.
• The battery cable must be at least 18 AWG.CAUTION:
• Turn the power switch and the external breaker OFF, and disconnect the 
AC cable before installing the backup battery.
• Carefully note the polarity of the batteries to prevent shorting. 
						

							Chapter 3. Cabinet Installation Section 300-Installation
3-10  DBS 576 (USA), issued 6/2/98 576-13-300
• With normal condition, the backup batteries last for about 20 minutes.
• The backup batteries should be replaced about every 3 years.
Installation
1.  Connect the red +24V cable to the + terminal of battery B.
2.  Connect the blue GND cable to the 
- terminal of battery A.
3.  Using the supplied 8-inch black battery cable to the 
+ terminal of battery A and 
to the 
- terminal of battery B.
4.  Slide the batteries into the guides in the cabinet.
Figure 3-10. Installation of backup batteries (VB-44025)
THE PRODUCT YOU HAVE PURCHASED MAY CONTAIN SEALED LEAD 
ACID BATTERIES WHICH ARE RECYCLABLE. AT THE END OF THEIR 
USEFUL LIFE, UNDER VARIOUS STATE AND LOCAL LAWS, IT IS ILLEGAL 
TO DISPOSE OF THESE BATTERIES INTO YOUR MUNICIPAL WASTE 
STREAM. PLEASE CALL 1-800-SAV-LEAD FOR INFORMATION ON HOW TO 
RECYCLE THESE BATTERIES.