Panasonic Digital Business System 576 Technical Manual Section 300

							Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-5
Figure 4-4. Floor-mounting Installation: Vertical Joining
6.  Attach the other Base Cabinet, Expansion Cabinet-1 and Expansion Cabinet-2 
following steps 2 to 5.
7.  Attach the 12 Horizontal Joint Plates (front: 6, rear: 6) onto the front and rear 
sides of each of the left and right cabinets with 24 screws. (The Horizontal Joint 
Plates are part of the VB-44024 expansion braket kit and must be separately 
purchased.)
8.  Drill 4 four holes in the floor to attach the cabinet to the floor, and drive in hole-
in-anchors.
Note:4 holes should be drilled in the floor on both sides of the joined left and right 
Base Cabinets. Before drilling the holes check the drilling hole pitch referring to 
Figure 4-4.
9.  Place the cabinet close to the wall. 
						

							Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-6 DBS 576 (USA), issued 6/2/98 576-13-300
10.  Align the screw holes on the base plates of the joined left and right Base cabinets 
with the hole-in-anchors driven into the floor, and attach with bolts.
11.  Attach the wall-mounting angle plates of the left and right Expansion cabinet-2 
with 4 wall-mounting screws (#10 flat head screws recommended).
Figure 4-5. Floor Mounting Installation: Vertical/Horizontal Joining 
						

							Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-7
Building Block Method (wall-mounting) 
Installation (576-port example shown)
Guidelines
Installation
1. Attach wall-mounting brackets on the rear of all cabinets that are to be installed. 
The direction that the wall-mounting brackets are attached varies according to 
the position (bottom, middle or top rack) where the cabinets are installed. Attach 
the wall-mounting brackets according to the figures below.
Figure 4-6. Wall-mounting Installation: Attaching the Wall-mounting Bracket
2.  Temporarily fasten the 4 wall-mounting screws to the wall. (#10 flat head screws 
recommended.)
3.  Lift up the left Base cabinet, and hook it onto the 8 screws that are temporarily 
fastening the wall-mounting angle.bracket. CAUTION:
• When all 6 cabinets have been attached to the wall, the wall will be 
subjected to a load of about 90 pounds. Before attaching the cabinets to 
the wall, check the strength of the wall to make sure that it can withstand 
this load.
Note:Base cabinet : cabinet installed on bottom rack
Expansion cabinet-1 : cabinet installed on middle rack
Expansion cabinet-2 : cabinet installed on top rack 
						

							Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-8 DBS 576 (USA), issued 6/2/98 576-13-300
4.  Completely tighten the temporarily fastened screws.
5.  Attach the right Base cabinet following steps 3. and 4.
Figure 4-7. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-1
6.  Attach the 2 Horizontal Joint Plates onto the joining sections on the front of the 
left and right Base cabinets with 4 screws. (The Horizontal Joint Plates are part 
of the VB-44024 expansion braket kit and must be separately purchased.)
7.  Attach the left and right Expansion cabinet-1 onto the wall following steps 2 to 
6.
8.  Attach the joining sections on the front of the left and right Base cabinet and 
Expansion cabinet-1 with 4 screws. 
						

							Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-9
Figure 4-8. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-2
9.  Attach the 2 Side Joint Plates onto the joining sections on the sides of the left 
and right Base cabinet and Expansion cabinet-1 with 8 screws.
10.  Attach the left and right Expansion cabinet-2 onto the wall following steps 2. to 
3.
11.  Attach the joining section on the fronts of the left and right Expansion cabinet-1 
and Expansion cabinet-2 with 4 screws.
12.  Attach the 2 Side Joint Plates onto the joining sections on the sides of the left 
and right Expansion cabinet-1 and Expansion cabinet-2 with 8 screws. 
						

							Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-10 DBS 576 (USA), issued 6/2/98 576-13-300
Figure 4-11. Wall-mounting Installation: Attaching the Wall-mounting of cabinet-3 
						

							Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-11
Installing Switch Boxes (VB-44023)
Guidelines
• The following describes how to install the AC cables for the optional VB-44023 
switch box.
• The switch box allows you to turn the power on and off to one base cabinet and up 
to two expansion cabinets from one switch. 
• If one or more expansion cabinets are attached to a base cabinet, a switch box 
must be installed in the base cabinet. For instance, a fully expanded system 
requires two switch boxes.
• The power to each of the cabinets is controlled by switching the power supply for 
the base cabinet. After completing installation and before replacing the covers of 
the cabinets, turn ON
 the power switches of each expansion cabinet. WA R N I N G :
• THE SWITCH BOX POWER WILL NOT BE CUT OFF EVEN IF THE 
POWER SWITCH ON THE BASE CABINET IS TURNED OFF. MAKE 
CERTAIN THAT ALL AC CABLES ARE DISCONNECTED FROM THE 
POWER OUTLETS TO AVOID THE POSSIBILITY OF ELECTRICAL 
SHOCK.
• TURN THE POWER SWITCH OFF BEFORE INSTALLING THE SWITCH 
BOX.
• CAREFULLY NOTE THE POLARITY WHEN WIRING TO PREVENT 
SHORTING.
Caution:
• To suppress noise, be sure to install an EMI filter on the AC cable. 
						

							Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-12 DBS 576 (USA), issued 6/2/98 576-13-300
Installation
Removing AC cables
1.  Disconnect the AC cables from the power units and remove the ground wires.
2.  Remove AC cable from the cord bracket and cable clamp and discard AC cable.
Figure 4-12. Removing AC cable
Installing Switch Box
1.  Position the switch box on the guide lugs in the base cabinet.
2.  Secure the switch box with the screw.
Figure 4-13. Installing the Switch Box 
						

							Section 300-Installation Chapter 4. - Installing Additional Cabinets
576-13-300 DBS 576 (USA), issued 6/2/98  4-13
3.  Attached the AC input power cable bushing (strain relief) to the side of the 
cabinet.
Figure 4-14. Attaching AC cable to cabinet
4.  Secure the AC input power cable to the cabinet using the cable clamp.
5.  Attach power leads to the Switch Box.
6.  Attach the power cable frame ground.
Figure 4-15. AC Power Cable Connection to Switch Box/Frame Ground 
						

							Chapter 4. - Installing Additional Cabinets Section 300-Installation
4-14 DBS 576 (USA), issued 6/2/98 576-13-300
7.  Plug the power supply to the switch box AC cables into the connectors on the 
switch box. The AC cable of top and middle cabinet must be connected to EXP 
connector of the switch box, and AC cable of base cabinet must be connected to 
BASE connector of the switch box.
Figure 4-16. Switch Box to Power Supply AC Cable Connections