Electro-mech LX2350-4 User manual

Model LX2350-4
Owner's Manual
Indoor Basketball Scoreboard
The purpose of this manual is to explain how to install and maintain the Electro-Mech
Model LX2350-4 Indoor Basketball scoreboard as well as the LX2350-4-ETN version of
this product, which features Electronic Team Names. Operation of the scoreboard is
covered in the manual that ships with the control console.
Original Filename: LX2350-4_Owner
Document Version: 1.4
Document Date: January 22, 2018

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TABLE OF CONTENTS
Best Practices for Personal Safety and Product Care.....................................................3
Product Specifications.....................................................................................................5
Planning Your Scoreboard Installation............................................................................9
Electrical Installation......................................................................................................11
Mechanical Installation..................................................................................................19
Testing, Operation, and Ongoing Care..........................................................................23
Maintenance..................................................................................................................24
Limited Warranty Statement..........................................................................................30

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BEST PRACTICES FOR PERSONAL SAFETY AND PRODUCT CARE
Thank you for choosing Electro-Mech products for your athletic facility. We hope you
will be pleased with the performance and appearance of your scoreboard. The
information in this document will help you maintain the equipment in its best condition.
Receiving Your Scoreboard
Depending on the shipping method, cardboard sheets, partially open wooden crates, or
a set of complete enclosures may protect the scoreboard cabinets and corner pieces. It
is important to inspect the scoreboard packaging for damage when it arrives ─before
signing any paperwork telling the trucking company that you have received everything in
good condition. If damage has occurred to the packaging, then damage may have
occurred to the scoreboard. Where you find dents, scrapes, or holes in the packaging,
peel back the cardboard or other packing materials to expose the scoreboard cabinet or
other pieces. Make notes on the paperwork provided by the trucking company before
accepting delivery. If the damage appears to be severe, refuse the shipment. Contact
the manufacturer as soon as possible if you suspect shipping damage.
For larger scoreboards (and any separate ID panels that may have shipped with them),
we supply eye bolts in the top of the cabinets for lifting. These eye bolts usually remain
exposed while the cabinets are in their shipping packages. You may lift a packaged
cabinet by the eye bolts to remove it from the truck and move it around prior to
installation. You may also transport a cabinet on dollies. For pieces more than twelve
feet wide, we recommend using a dolly at least every ten feet along the bottom of the
cabinet to provide support and prevent sagging.
We recommend keeping the scoreboard displays, corner sections, and accessories in
their packing materials until the day of installation. It is important to keep the packing
materials dry. Wet cardboard can adhere to surfaces and damage the finish.
If your scoreboard cabinets arrived in wooden crates, take care to avoid scraping the
cabinets with tools, nails, or lumber when prying apart the nailed sections. Make certain
to pry the wooden pieces apart from each other rather than trying to apply force against
a scoreboard cabinet. Aluminum is strong, but a steel crowbar is stronger.
Once the crate is out of the way, remove the cardboard padding. You may need to
remove a few labels adhered to the side of the cabinets for shipping. At this point, your
scoreboard cabinets are unpacked and ready for installation.
Storage Prior to Installation
Unless you are planning to install your scoreboard on the same day that it arrives, you
will need to prepare a clean, dry, secure area for storage. Even though your
scoreboard cabinetry is designed ruggedly, you will need to keep it away from moisture,
dirt, accidental damage, and abuse.

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Stand the scoreboard cabinets upright prior to assembly; never lay them facing up or
down. Never stack things on top of the scoreboard cabinets while they are in storage.
These recommendations apply equally to ID panels and other items that may have
shipped with your scoreboard.
Conditions of Installation and Use for Indoor Scoreboards
This scoreboard display and its accessories are designed for installation and use in a
dry environment. Do not attempt to install or operate this scoreboard outdoors or in a
wet location.
Center-hung scoreboard displays are typically suspended by chains or cables from a
hoist system, which is attached to a support beam in the ceiling of the building. Each of
the four scoreboard cabinets includes a pair of eye bolts for attaching the chains or
cables. It is important to make sure the support system is designed to handle the
weight of the complete scoreboard assembly ─ including any ID panels or other
accessories.
Center-hung scoreboard displays are not designed to support additional devices. In
other words, don't plan to hang lighting or sound equipment from the scoreboard
structure. The scoreboard may share a support system with other devices, assuming
the support system can handle the combined load.
Each scoreboard cabinet includes an attached AC power cord fitted for a standard 120
VAC electrical outlet. When a scoreboard display is not in use, you should disconnect it
from power. For this reason, we recommend installing a dedicated disconnect switch
within sight of each scoreboard display. In the "off" position, the switch should isolate
all load-carrying conductors (not the ground). This will help protect the scoreboard
electronics from nearby lightning strikes and other power fluctuations that might
otherwise travel along the power cables.

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PRODUCT SPECIFICATIONS
General Description:
•Model LX2350-4 is an electronic scoreboard designed for permanent installation
indoors and intended primarily to display time and scoring information for
basketball.
Standard Package Includes:
•Four scoreboard cabinets
•Four corner pieces
•Hardware for attaching scoreboards to corners
•One control console
•Four stereo patch cables
•One junction box (when configured to use hardwired data cable)
•One stereo plug
Cabinet Dimensions and Weight:
•Each scoreboard section is 9 ft (W) x 3 ft (H) x 6 in (D), 90 lb
•Each corner section is 13.8 in (W) x 3 ft (H) x 13.8 in (D), 30 lb
•Full assembly is 11 ft 3 in square (W x D), 3 ft (H), 480 lb
Cabinet Construction and Finish:
•Each cabinet includes a self-supporting frame constructed from extruded
aluminum channel and formed aluminum pieces. The face and back sections are
made from aluminum sheet material. The masks protecting the LED displays are
also made from aluminum sheet material. Mask and face pieces are finished
with enamel paint. All other cabinet surfaces are mill finish. Captions, optional
accent striping, and other decorative elements are cut from interior grade vinyl.
Electro-Mech offers eighteen standard paint and vinyl colors. Other color options
are available as an upgrade.

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Overview of LED Displays:
•Red, amber, or green LEDs (light emitting diodes) mounted on PCBs (printed
circuit boards) form all digits, indicators, and text displays. The PCBs are
mounted behind aluminum masks, painted black to increase contrast. The
masks are designed to allow the epoxy shells of the LEDs to protrude past the
scoreboard face, maximizing viewing angle while providing impact absorbing
protection from contact with stray balls and other flying objects. The LEDs may
be dimmed to reduce glare under changing lighting conditions. They are rated
for 100,000 hours of use.
Display Features:
•4-Digit Period Clock, Red, 12 inches tall, shows Time in MM:SS up to 99:59,
counts up or down, can show Tenths of Seconds during the final minute of a
down-counting Period, can show HH:MM in Time of Day Mode, can show a
Segment Clock in Practice Segment Timer Mode
•2.1-Digit Scores (one set for Guest, one set for Home), Amber, 12 inches tall, to
199, may be used to show team cumulative Scores in Wresting
•1-Digit Period, Green, 9 inches tall, to 4
•"B" Indicators for Bonus and Double Bonus (one pair for Guest, one pair for
Home), Green, 3 inches tall
•Arrow Indicators for Next Possession (one for Guest, one for Home), Red, 3
inches tall
•Optional Electronic Team Names (one ETN display for Guest, one ETN display
for Home), Amber, 9x48 pixels, 5-inch x 27-inch active display area, capable of
showing up to 9 characters
Additional Standard Scoreboard Features:
•All serviceable components accessible from the front of the cabinets
•Internally mounted Horn in each scoreboard cabinet
•Built-in AC power cable, 6 feet long, for each scoreboard cabinet
•Data output port for daisy-chaining additional displays
•Output receptacles to power Visual Horn Indicators
•Eye bolts for lifting and hanging

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Control Console:
•The control console features custom software running on an internal
microprocessor, a 32-character LCD display, a 37-button sealed membrane
keypad, and a 6-ft. power cord. The console enclosure consists of an ABS
plastic base and top with a metal back plate.
•Four data output ports can each directly drive a scoreboard display through a
single cable run and indirectly drive up to ten displays in perfect synchronization
via daisy chaining. The number of synchronized displays is practically limitless
when using the optional ScoreLink RF communications system.
•The software includes support for Electronic Team Names, Practice Segment
Timer Mode, Time of Day Clock Mode, 50 levels of brightness, and other
features.
Optional Equipment and Features:
•Data cable for hard-wired installations
•ScoreLink RF communications system for wireless data transmission
•Hard carrying case for control console and accessories
•Wired or wireless hand-held controllers to start and stop the Period Clock
•Non-illuminated, illuminated, and fully electronic ID panels, message centers,
and video displays
•Stadium Sound systems
•Backboard-mounted LED light bar kits to serve as visual Horn indicators
Power Requirements:
•Without ETNs, the LX2350-4 scoreboard display requires a total of 4.8 amps,
120 VAC, 60 Hz. Each scoreboard face requires one circuit providing 1.2 amps,
120 VAC, 60 Hz.
•LX2350-4-ETN requires a total of 7.6 amps, 120 VAC, 60 Hz. Each scoreboard
face requires one circuit providing 1.9 amps, 120 VAC, 60 Hz.
•Power enters each scoreboard cabinet via an attached 6-foot long cord designed
to plug into a standard (NEMA 5-15R) power receptacle.
•The control console requires one circuit providing 0.5 amps, 120 VAC, 60 Hz via
standard (NEMA 5-15R) power receptacles.
•Electro-Mech recommends installing a dedicated breaker to control power to the
scoreboard display.
•All power receptacles must be properly grounded.

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Mounting Requirements:
•In its standard configuration, this scoreboard display is designed to be
suspended by cables or chains.
•Electro-Mech recommends using an electric or mechanical hoist system allowing
the scoreboard assembly to be raised or lowered for maintenance.
Warranty Information:
•The standard limited warranty covers factory labor on parts returned to Electro-
Mech within five years of the scoreboard's date of invoice.
•The complete standard warranty statement is included near the end of this
document.
•Additional support plans are available.

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PLANNING YOUR SCOREBOARD INSTALLATION
A good plan is important to the success of any project, and installing a scoreboard is no
exception. An important first step in planning for your scoreboard is determining its
optimal location. Key factors here are visibility and accessibility.
By "accessibility" we mean the ease with which you can get people, equipment, cabling,
etc. to a scoreboard display during installation, as well as ease-of-access for future
service. For center-hung scoreboards, the best solution usually involves a hoist system
that raises and lowers the entire scoreboard assembly. Speak with your local sign
company or scoreboard sales rep for recommendations.
By "visibility" we mean the ease with which spectators, participants, and the scoreboard
operator can see the display. Because every sports facility is unique, there is no one-
size-fits-all way to describe the perfect scoreboard location. Obviously, a "center-hung"
scoreboard such as this one should be centered over the playing area. The height is
the main variable. We recommend at least 25 feet of clearance between the playing
surface and the bottom of the scoreboard assembly. Otherwise, the scoreboard could
interfere with gameplay – especially where volleyball is played.
Unless you've selected a very small scoreboard for a very large facility, viewing distance
is not usually an issue. The rule of thumb in the sign industry is that, for lighted
characters, every inch of height provides 50 feet of viewing distance. For comfort, and
because you also need to read the captions on a scoreboard, we prefer to recommend
25 feet of viewing distance per inch of digit height. Model LX2350-4 uses 12- and 9-
inch tall digits, meaning it can easily be seen from 225 feet. If your spectators need to
be several hundred feet or more from the scoreboard, your facility may require a larger
display.
For some indoor facilities, it is important to make sure people cannot – accidentally or
intentionally – interfere with the scoreboard or cables connected to it. This is rarely a
problem for center-hung scoreboards, although some facilities may include overhead
walkways that could bring people within reach. Such proximity can make it tempting for
fans to reach out and touch the scoreboard, snag a cable, drop a soda on it, or
otherwise make a nuisance of themselves. One solution would be to install a shield
above any scoreboard in this position.
If you are planning for the construction or renovation of a new facility, then you will likely
have more options for locating your scoreboard. In addition, you may be able choose
helpful positions for electrical outlets, plan for conduits, and control other details that will
make installation, operation, and service easier. Your scoreboard sales rep should be
able to answer questions and offer advice that will help you with these plans.
If you are adding this scoreboard to an existing facility, your options may be more
limited. In some cases, we can modify the scoreboard to meet special needs. An
example of this would be accommodating power entry through the back of the cabinet

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rather than via the standard power cable on top. These sorts of details must be worked
out prior to the release of a scoreboard order. Your sales rep can guide you through the
process.
The sections that follow in this document primarily discuss the details of the mechanical
and electrical installation of a single center-hung assembly. If your project includes
multiple scoreboards or other electronic displays, please check with your scoreboard
sales rep to make sure you have any project-level documentation you may need.
Before You Spend Your Time and Money...
Please keep in mind that the dimensions and other details referenced throughout this
document are specific to the standard configuration of this particular scoreboard model.
Before purchasing materials, running cabling, etc. you should verify with the factory that
you have the right documentation for your unique project.
It is possible that a government agency, such as your local city council, will require a
building permit or other documentation and approval forms related to the installation and
operation of your scoreboard. In some cases the installation plan may require a stamp
from a locally licensed Professional Engineer (P.E.).

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ELECTRICAL INSTALLATION
This section of the manual provides information that is important for locating power
receptacles, running cable, planning for conduit, and other steps needed in preparation
for bringing power and data to the scoreboard. The final hookups for power and data
will happen after the mechanical installation. But it is wise to plan for key pieces of the
electrical installation prior to physically mounting the scoreboard.
If your scoreboard package includes special accessories such as electronic message
centers or video displays, there may be additional cabling and conduit needed to
support this equipment. Please consult the documentation provided with these items.
The standard configuration of this scoreboard includes a power cable attached to the
top of each scoreboard cabinet. Input and output ports for data are located here as
well. At the factory, it is possible to relocate these connection points to accommodate
special needs. Let your scoreboard sales rep know about any custom requirements
BEFORE we begin building your cabinet.

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In the preceding illustrations, it is assumed that all four faces of the scoreboard will be
synchronized to the same control console (using data cable) and powered via the same
electrical circuit. It is possible to treat each scoreboard cabinet independently. If your
facility requires separate management of the scoreboard faces, please discuss the
requirements with your scoreboard sales rep.

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Additional Materials and Tools
The illustrations on the previous pages show where power is needed and how data
cables can be routed. Data cable is not included as a standard part of the scoreboard
package, although Electro-Mech typically is the source for it. Alternatively, Electro-
Mech can provide a ScoreLink wireless communication system to replace the data
cable. Other materials shown (or implied) in the illustration that are not included in the
standard scoreboard package:
•Power receptacles (at the scoreboard display and at the point of operation)
•A disconnect switch (to turn the scoreboard display on and off)
•Cable and conduit to supply power to the receptacles
•Conduit for the data cable (if data cable is used)
•Wire splicing kits for use with 22 AWG wire (if data cable is used)
This document assumes the installer has access to tools and skills for...
•Working with conduit and fittings
•Routing cables
•Crimping terminals, splicing, soldering, and other basic wire management
•Minor carpentry work
•Common tools such as Phillips and flat head screwdrivers, a knife, etc.
Electro-Mech recommends you find a reputable sign installer or electrician with the tools
and experience to handle the type of work mentioned above. If you are unfamiliar with
sign installers in your area, contact your scoreboard sales rep for recommendations.
Power Receptacles and Disconnect Switch
Each scoreboard cabinet is designed to be plugged into a US standard (NEMA 5-15R)
120 VAC receptacle. Because center-hung scoreboards are typically installed on hoist
systems, the installer usually runs power extension cables from the scoreboards to the
receptacles. The extensions must provide sufficient slack to allow the scoreboard
assembly to be lowered for maintenance. We recommend providing a disconnect
switch to kill power to the receptacles when the scoreboard is not in use. The control
console also requires a power receptacle. This receptacle does not need to be
attached to a disconnect switch, since the consoles can easily be unplugged and are
typically stored between games. A control console used with an external ScoreLink
transmitter will need an extra receptacle for the transmitter's power supply.
Model LX2350-4 draws a maximum of 7.6 amps (1.9 amps per scoreboard face) when
the package includes Electronic Team Names. Without ETNs, the maximum current is
4.8 amps (1.2 amps per scoreboard face).

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Junction Boxes and Data Cable
If your scoreboard package includes the ScoreLink wireless communication system,
your work is done here. Skip to the next section.
The following material assumes the use of a single run of cable to send data to all four
faces of a center-hung scoreboard. It is possible to treat each face independently, but
this material sticks to the basics. Let your
scoreboard sales rep know if you have
special requirements.
Your hard-wired scoreboard package
includes a junction box, which you should
permanently mount to provide a stable point
of termination for the data cable. The idea is
to connect the control console to this junction
box via a ten-foot patch cable. So the
junction box will need to be mounted within
ten feet of the position where your
scoreboard operator will sit. In many gyms
the junction box is concealed inside a larger floor box. The box can be flush mounted
on a wall, externally mounted on bleachers, or positioned anywhere else that is
convenient. Choose a location that is protected so that the junction box and cables are
not likely to be stepped on, tripped over, or have liquid (or anything else) spilled on
them.
It is also important to label your junction box. The connectors used for scoreboard data
look very much like the type used in some audio systems. Plugging audio devices into
a scoreboard data line can often damage the scoreboard.
The junction box ships with a length of cable
soldered to the stereo socket and tucked
inside the box. There should be no need to
solder cable to this socket during the
installation. Instead, splice the wires from the
cable to the pigtail inside the junction box,
matching colors. The wires in the pigtail are
22 AWG, and the cable should use the same
size conductors. The installer must provide
wire nuts, crimp splices, or other means to
connect the wires.
The splice point should stay inside the
junction box. That is, you want to feed the long run of cable into the box rather than
pulling the pigtail out. Electro-Mech provides a strain relief on one side of the junction
box to secure the cable. You may choose to connect conduit directly to the junction

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box, in which case the strain relief will not be needed. The junction box is designed to
accept 3/4-inch conduit fittings.
We recommend running data cable in conduit from the junction box to the scoreboard ─
especially where the cable would otherwise be exposed. You should never run data
cable in the same conduit as power cable. Having more than one run of scoreboard
data cable in a single conduit is perfectly fine.
One more warning about data cable: Never split or branch the cable. The current loop
signal we use to transmit data to the scoreboard will behave unpredictably if it is divided
between two destinations. There are other options for getting synchronized data to two
locations, including daisy chaining ─which will be discussed below. If your facility calls
for a more complicated cabling plan, it is best to work out the details with your
scoreboard sales rep prior to installation.
Stereo Plug
At the scoreboard end, data enters the cabinet through a port located along the top. In
the case of center-hung scoreboards, you may pick any of the four faces to serve as the
initial entry point for data. Then use the patch cables to route data out of the first
cabinet and into the second, out of the second and into the third, etc. The illustration
below is a view of the top of a single scoreboard face showing the standard location of
the ports.

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There are two common methods for bringing the last few feet of data cable to the
scoreboard assembly. One method involves installing a junction box above the
assembly. From here you can run a patch cable to the first scoreboard display's data
input port. The standard scoreboard package does not include extra junction boxes and
patch cables for this type of cable routing. However, the materials are readily available
from Electro-Mech. For center-hung scoreboards, this method allows you to use the
patch cable to provide the slack required to lower the sign for service. Or the junction
box can be positioned (with slack on the other side) to be lowered and raised along with
the scoreboard assembly.
The other method requires the right-angle
stereo plug assembly, which Electro-Mech
provides with all hard-wired indoor scoreboard
packages. The assembly consists of the main
plug body, an insulating sleeve, and a cover.
For center-hung scoreboards, this end of the
data cable must include additional slack if the
scoreboard assembly is to be lowered and
raised with a hoist system for ease of service.
Connecting data cable to the stereo plug
requires soldering to two terminals. Slide the
cover and sleeve over the data cable before soldering. The terminal nearer the center
of the plug body connects to the tip of the socket. The black wire from the data cable
should be soldered to this terminal. The terminal that extends further from the center of
the plug body connects to the ring of the plug.
Solder the red wire here. The strain relief tabs
are connected to the shaft of the plug. When
you bend the tabs around the data cable, they
should be in contact with the shielding or the
bare drain wire.
Slide the insulator sleeve over the terminals and
screw the cover in place to complete the
assembly. Now you will be ready to plug the
data cable into the port at the top of the
scoreboard display when it is installed.

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Managing Multiple Scoreboard Displays
The preceding material discussed how to run data cable for a single scoreboard display.
When multiple displays are installed in the same facility, the options can become
confusing. Please discuss cabling plans with your Electro-Mech sales rep to make
certain you receive all the materials you need to meet your expectations.
The simplest (and rarest) arrangement occurs when multiple scoreboards are
completely unrelated to each other. In this case, each display would have its own
control console (or consoles, in the case of scoreboards with stat panels) and its own
data cable.
Daisy-Chaining
Another simple case is when multiple signs are always run in synchronization from a
single control console. There are two ways to run cable for this setup. By running a
secondary data cable from the data output port of one cabinet to the data input port of
the second cabinet, you will link the two displays permanently.
This daisy-chaining technique can be extended, with a third display connected to the
second, a fourth display connected to the third, on so on. We recommend daisy-
chaining no more than ten displays from a single data source. Each scoreboard display
in the chain adds a few milliseconds of propagation delay. After the tenth display, this
delay would be noticeable when the Clock is counting Tenths of Seconds.
The second technique for running displays in synch is to use two runs of cable, each
patched to a separate output of the same control console. We recommend this
technique, when conditions in the gym allow it, because it offers the option of running
the scoreboards separately in the future. This is discussed further in the next section.

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Sometimes Separate, Sometimes Together
As mentioned previously, the current loop signal that sends data from a control console
to a scoreboard display cannot be split. That is, you can't take the signal from one data
port on the back of the control console to two or more displays. Instead, you should
plan for a separate cable run for each display (or for each chain of displays, if you plan
to daisy-chain). Each control console includes four output ports, so it is possible to
directly drive four hardwired scoreboard displays (or chains) from one console.
In the illustration above, two signs are linked through Control Console "A" because both
patch cables are plugged into data ports on the back of the console. If activities in the
gym require two independent scoreboard displays, the patch cable connected to the "B"
junction box can be moved to the "B" console.
In facilities with multiple scoreboard displays, including shot clocks and locker room
clocks, many combinations of these techniques are possible. You may use one port on
the back of your control console to drive a main scoreboard display and (via daisy-
chaining) a set of shot clocks, another port to drive a second scoreboard display, and a
third port to drive several daisy-chained locker room clocks. As always, we recommend
discussing these options with your scoreboard sales representative prior to placing your
order.

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MECHANICAL INSTALLATION
This section of the manual describes assembling and installing the four-sided
scoreboard display, in its standard configuration. If your scoreboard project includes
customizations with additional ID panels or requires other special mounting
considerations, please contact the factory to request details specific to your project. If
you have unique requirements and would like to change the position or size of our
mounting hardware to accommodate them, we can probably help you out. But we need
to find out BEFORE we start building the cabinets. Let your scoreboard sales rep know
about any special needs as early in the process as possible.
Additional Materials and Tools
Typically a center-hung scoreboard assembly is installed on a hoist system, which is
attached to a support beam in the building's ceiling. The assembly may be connected
to the hoist via chains, cables, rods, etc. Rather than attempting to describe all possible
options for a support mechanism, this document assumes the installer will provide a
method for hanging the scoreboard assembly that can handle the weight of all
components and will make servicing convenient.
In addition to the support system, the installer will need a 9/16-inch SAE wrench or
socket set to tighten the assembly bolts and will need people to provide support for the
cabinets and corners as the pieces are aligned. This document also assumes the
installer has access to tools and skills for working at the heights required for installing
the support system, lifting the scoreboard assembly, and making final connections.
Electro-Mech recommends you find a reputable sign installer with the equipment and
experience to handle the work mentioned above. If you are unfamiliar with sign
installers in your area, contact your scoreboard sales rep for recommendations.

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Assembling the Cabinets and Corners
The main assembly consists of four scoreboard cabinets and four corner pieces. In
theory, the four scoreboard cabinets are interchangeable and the four corners are
interchangeable. In practice, we make slight adjustments to each piece at the factory to
ensure the best fit. The product is fully assembled for testing before shipment. Then
we mark the position of each piece before taking it all apart to ship. We recommend
following the markings on the cabinets to make sure all the pieces fit back together as
they did at the factory.
The assembly is held together by 3/8x1-inch bolts. Each scoreboard cabinet has four
pieces of tapped hardware built into each side of its frame. The bolts pass through the
cabinet frames and thread into the scoreboard sides. You will find access panels along
the inside/back of each corner pieces. Remove the access panels to install the bolts.
There are a total of 32 bolts (and 32 washers) provided to hold the complete assembly
together. Replace the access panels with all scoreboards and corners are connected.
This assembly work should be completed on the floor with a team to support and align
the pieces while someone else threads and tightens the bolts. Do not attempt to hang
individual sections and complete the assembly from above the floor. This will create
stresses that the cabinetry was not designed to handle.