Electro-mech 2665-4 User guide

ELECTRO-MECH SCOREBOARD CO.
MODEL 2665-4 BASKETBALL SCOREBOARD
OWNER’S HANDBOOK
Thank you for choosing an Electro-Mech Scoreboard for your athletic complex. We are
confident that your new scoreboard will give many years of reliable service.
Rev. 1 Revised:01/10/2007
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 2
TABLE OF CONTENTS
2665-4 BASKETBALL SCOREBOARD SPECIFICATIONS.......... 3
SCOREBOARD INSTALLATION ..................................................... 4
SCOREBOARD ASSEMBLY.............................................................................4
ELECTRICAL CONNECTIONS.......................................................................5
Connecting The Scoreboard To Your Power Source .........................................................6
ScoreLink 200.........................................................................................................................6
Control Cable Installation.....................................................................................................7
Daisy chaining the Serial Data Lines ...................................................................................8
Control Console Connections ...............................................................................................8
Goal Lights Installation.........................................................................................................9
Installation of Two or More Scoreboards at the Same Site...............................................9
SCOREBOARD OPERATION.......................................................... 10
SCOREBOARD STARTUP..............................................................................10
GAME TIME OPERATION.............................................................................10
Control Console Key Functions..........................................................................................12
Horn and Goal Lights Operation.......................................................................................17
Hand Held Clock Control Unit Operation........................................................................17
Reversible Caption Plates ...................................................................................................17
SCOREBOARD SHUTDOWN.........................................................................17
SERVICING THE SCOREBOARD.................................................. 18
COMPONENT REPLACEMENT ...................................................................18
LED Digits And Indicators Replacement..........................................................................18
Horn Replacement...............................................................................................................19
LED Driver Module Replacement......................................................................................20
LED Power Supply Module Replacement.........................................................................22
WARRANTY....................................................................................... 23
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 3
2665-4 BASKETBALL SCOREBOARD SPECIFICATIONS
GENERAL: This ETL listed four sided scoreboard includes four scoreboard cabinets, four corner pieces,
assembly hardware, control console, 10 ft. extension cable, three 25 ft. extension cables, and
junction box.
DIMENSIONS: Approximately 12’ 6” square at the top x 60” H x 6” D (2665-4 with bottom sponsor
panel measures approximately 12’ 10” square at the top L x 81” H x 6” D)
WEIGHT: 1000 lbs (2665-4 with bottom sponsor panel weighs 1100 lbs)
SCOREBOARD CONSTRUCTION: The outer frame is made from extruded aluminum. Internal
structural parts may be extruded aluminum or formed from aluminum sheet. The face and back
are made from aluminum sheet. The face is finished with enamel paint. Black is the standard face
color. White is the standard color for the sponsor panel. The captions are white on a gray
background.
DISPLAY: The 2665-4 basketball scoreboard displays HOME and GUEST scores 0 to 199, player number
to 99, team fouls 0 to 19, bonus and possession symbols, player fouls and time outs 0 to 9, a 99:59
clock with 1/10th of a second timing below 1:00, and PERIOD 1 to 4. It has an internal horn. The
volleyball and wrestling captions are mounted on reversible panels at the bottom of the
scoreboard.
DIGITS AND SYMBOLS: Light emitting diodes mounted on printed circuit boards form the digits and
symbols. The clock uses 12” red digits, the HOME and GUEST scores use 12” yellow digits, the
PERIOD, PLAYER number and fouls use 9” green digits, the 3” bonus symbols are green, the 3”
possession symbols and colon / decimal symbols are red, the team fouls use 9” yellow digits, and
the time outs use 9” red digits.
POWER REQUIREMENTS: Scoreboard - 120 VAC, 4 A, 60 Hz (each side uses 120 VAC, 1A, 60 Hz).
Each side has an attached 6 ft power cord. Control Console - 120 VAC, 0.5 A, 60 Hz
SCOREBOARD ELECTRONICS: 100% solid state fully enclosed.
CONTROL CONSOLE: The control console features a microprocessor, 37 key sealed membrane
keypad, a LCD display, and an attached 6 foot power cord. The console housing consists of ABS
plastic base and top pieces with a steel back plate.
CONTROL CABLE: The cable has two 22 AWG stranded copper conductors with semi-rigid PVC
insulation. It also has a braided shield and a foil shield. The polyethylene jacket is rated at 300
volts. The cable is direct burial rated and measures approximately ¼” in diameter. The cable is
sold separately from the scoreboard.
JUNCTION BOX AND EXTENSION CABLE: A 4 ¼” x 2 ¼” x 2” junction box with a ¼” stereo jack
mounted on the face plate is attached to the control cable at the point of operation. A 10 ft.
extension cable connects the control console to the junction box.
SCORELINK 200 RF MODEM SYSTEM: This accessory can be used in place of control cable and
junction box for this scoreboard without internal modifications to the scoreboard or the control
console. Refer to the SCORELINK 200 RF MODEM SYSTEM OWNER’S HANDBOOK for
more information.
WARRANTY: Five year limited warranty.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 4
SCOREBOARD INSTALLATION
This scoreboard is designed for indoor use only. The scoreboard arrives in eight
sections: four scoreboard cabinets and four corner pieces. Two eyebolts are attached to
the top of each cabinet. The assembled unit is designed to be suspended from cables
attached to these eight eyebolts. The mounting bolts and washers necessary to attach the
corners are provided with the scoreboard. Installation of the scoreboard consists of
joining the four scoreboard cabinets at the corners using the provided hardware, hanging
the assembled scoreboard in the air at the desired height and making the proper electrical
connections.
SCOREBOARD ASSEMBLY
1. Each corner piece and scoreboard cabinet has numbers written on the rear panel. It is
necessary to attach each corner piece to a cabinet side that has an identical number.
2. Each corner bracket has a black face panel attached by some hex head screws.
Remove the face panel from a corner bracket.
3. Align the corner bracket with one of the scoreboard cabinet sides. The widest part of
the corner bracket should be aligned with the top of the scoreboard cabinet. Note:
This scoreboard is designed to be angled downward. It will to tilt the scoreboard
cabinets to align them with the corner brackets.
4. Insert a small washer over a bolt.
5. Insert a larger washer over the bolt.
6. Pass the bolt through one of the holes inside the corner bracket and thread it into the
threaded hole provided in the side of the scoreboard cabinet.
7. Install the other three bolts to the scoreboard cabinet in the same manner.
8. Attach another scoreboard cabinet to the other side of the corner bracket in the same
manner.
9. Reinstall the corner bracket face panel.
10. Repeat this process until all the scoreboard cabinets are joined together at the corners
with the brackets.
11. Connect your chains or cables to the eyebolts of the assembled scoreboard. Figure 1
shows the distance between the eyebolts.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 5
Figure 1 2665-4 Eyebolt Spacing
12. Raise the scoreboard into the air and secure the chains or cables.
ELECTRICAL CONNECTIONS
This scoreboard was designed to make the electrical connections as easy as possible.
These connections include connecting each scoreboard cabinet to a power source,
installing the control cable, daisy chaining the serial data lines, and connecting the
control console. Figure 2 shows the electrical connection points on the scoreboard. We
recommend a qualified electrician perform the needed electrical connections to ensure
proper operation of your scoreboard.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 6
POWER CORD
SERIAL DATA INPUT JACK
SERIAL DATA OUTPUT JACK
GOAL LIGHT RECEPTACLE
Figure 2 Electrical Connection Points
Connecting The Scoreboard To Your Power Source
Each scoreboard cabinet requires 120 VAC 1 amp service. Each scoreboard cabinet has a
6 foot attached power cord which can be plugged into a NEMA 5-15R receptacle.
ScoreLink 200
The SCORELINK 200 RF MODEM SET is intended to eliminate the control cable
between the scoreboard and the control console on Electro-Mech Scoreboard MM and
MP series scoreboards as well as all LED scoreboards. If you have purchased this
accessory, disregard the section of this manual titled Control Cable Installation. Refer
to the SCORELINK 200 RF MODEM SET OWNER’S HANDBOOK for installation
instructions.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 7
Control Cable Installation
The control cable connects the scoreboard to the control console. A small junction box
with a ¼” stereo jack mounted on the face plate is attached to the control cable at the
point of operation of the scoreboard. This junction box should be securely mounted
within ten feet of the rear of the control console. Most customers order the control cable
with the junction box attached. Some customers prefer to attach the junction box after
the cable is installed. Those customers must solder the control cable to the ¼” stereo
jack. Figure 3 shows the control cable wire connection points on the rear of the ¼”
stereo jack.
2
3
1
PIN 2 - RED WIRE
PIN 1 - BLACK WIRE
PIN 3 - SHIELD WIRE
Figure 3 ¼” Stereo Jack Wiring Diagram
A ¼” stereo plug is attached to the scoreboard end of the control cable. It is inserted into
the ¼” stereo jack mounted on top of the scoreboard. Most customers order the control
cable with the ¼” stereo plug attached. Some customers prefer to attach it after the cable
is installed. Those customers must solder the ¼” stereo plug to the cable according to the
figure 4. Unscrew the stereo plug cover from the plug body to expose the contact pins.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 8
PIN 2 - RED WIRE
PIN 1 - BLACK WIRE
PIN 3 - SHIELD WIRE
STEREO PLUG COVER
Figure 4 ¼” Stereo Plug Wiring Diagram
Insert the stereo plug into the serial data input jack mounted on top of one of the
scoreboard cabinets.
Daisy chaining the Serial Data Lines
Plug one end of a 25 foot extension cable (a cable with stereo plugs attached to each end)
into the serial data output jack of the same cabinet. Plug the other end into the serial data
input jack of the next scoreboard cabinet to the right of the first cabinet. Connect the
next two cabinets in the same manner using two of the remaining extension cables.
Control Console Connections
The 10 ft. extension cable has two molded ¼” stereo plugs attached to it. It is used to
connect the control console to the junction box. The following steps describe how to
connect the control console:
1. Plug one end of the extension cable into the ¼” stereo jack on the junction box or the
ScoreLink 200 Transmitter, if purchased.
2. Plug the other end into one of the four ¼” stereo jacks mounted on the control
console back plate.
3. Plug the control console power cord into a grounded NEMA 5-15R 120 VAC
receptacle.
This product is equipped with a 3-wire grounding type plug, a plug having a third
(grounding) pin. This plug will only fit into a grounding-type power outlet. This is a
safety feature. If you are unable to insert the plug into the outlet, contact a qualified
electrician to replace your obsolete outlet. Do not defeat the purpose of the grounding-
type plug.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 9
Goal Lights Installation
This scoreboard can control a set of goal lights. The following steps describe how to
install a goal light:
1. Mount the goal light in the desired location.
2. Splice wires (not provided) to the two wire leads of the goal light.
3. Attach a polarized plug to the other end of the wires.
4. Insert the plug into the goal light receptacle on the top of the scoreboard cabinet. The
goal light receptacle is protected by a 1 amp fuse. Do not insert bulbs greater than 40
watts in the goal lights.
Installation of Two or More Scoreboards at the Same Site
It is possible to operate multiple scoreboards or shot timers from the same console.
Either install a control cable between each unit and the control console or install a
ScoreLink 200 Transmitter at the control console and a ScoreLink Receiver at each
scoreboard or shot timer. Additional scoreboards and shot timers can be controlled by
connecting a control cable from the serial data output ¼” stereo jack on the right side of
an installed scoreboard cabinet to the serial data input ¼” stereo jack on the top of the
additional scoreboard or shot timers. Attach ¼” stereo plugs on each end of these cables
according to figure 4. Never splice the control cables together or connect them to the
same junction box. Each scoreboard will need to be connected to 120 VAC service.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 10
SCOREBOARD OPERATION
SCOREBOARD STARTUP
1. Place the circuit breaker for the scoreboard in the ON position.
2. Plug one end of the extension cable into ¼”stereo jack on the junction box or the
ScoreLink 200 Transmitter, if purchased.
3. Plug the other end into the ¼”stereo jack mounted on the control console back plate.
4. Plug the control console power cord into a grounded NEMA 5-15R 120 VAC
receptacle.
5. If a ScoreLink 200 RF MODEM SYSTEM is installed with this scoreboard, plug the
wall mount DC power supply into a grounded NEMA 5-15R 120 VAC receptacle and
the male plug on the end of the attached cable into the Power jack on the Transmitter.
GAME TIME OPERATION
This scoreboard is operated with a 37-key control console. Figure 5 shows the keypad
layout on the control console.
Figure 5 Keypad Layout
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 11
Immediately after the control console power cord is plugged into a 120 VAC source, the
console LCD display will read:
ELECTRO-MECH 276
SCOREBOARD MPBWV
After a few seconds the display will read:
000 D15:00 0 000
00 00 0 00
The scoreboard will display:
CLOCK – 15:00
GUEST – 0
HOME – 0
The control console LCD display shows the same information as the scoreboard. Note:
In some functions a 0 will be blanked on the scoreboard, but not on the console. Because
this console program is used for a number of models of scoreboards, some functions will
appear on the console LCD display that are not present on the scoreboard. Figure 6
explains the LCD display layout.
Figure 6 Control Console LCD Display
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 12
Control Console Key Functions
1. SET CLOCK – This key sets the time displayed on the scoreboard clock. Press
[SET CLOCK]. The console LCD display will read:
000 D15:00 0 000
SET CLK <00:00>
Press the keypad numbers for the time, [ENTER]. Example: Press [SET CLOCK],
[6], [0], [0], [0], [ENTER] on the control console. 60:00 will be displayed on the
clock section of the scoreboard.
2. SET CLOCK .1 SEC – This key is used to set the scoreboard clock to a time less
than one minute when tenth of a second accuracy is required. Press [SET CLOCK .1
SEC]. The console LCD display will read:
000 D15:00 0 000
SET SEC <00.0>
Press the keypad numbers for the time, [ENTER].Example: Press [SET CLOCK .1
SEC], [5], [3], [8], [ENTER] on the control console. 53.8 will be displayed on the
clock section of the scoreboard.
3. .1 SEC ON/OFF – This key is used to enable or disable the display of tenths of
seconds on the scoreboard. The use of this key has a visible effect on the scoreboard
only if the game clock is less than one minute. This mode is enabled when the
control console is turned on. If it is disabled, the LCD display on the control console
will still show 1/10th second timing, but the scoreboard will not display it. To turn
this function off, press [.1 SEC ON/OFF]. The console LCD display will read:
CLOCK ON <1>
.1 SEC OFF <0>
Press [0], [ENTER] on the control console.
4. CLOCK UP/DOWN – The clock can be set up to either count up or count down.
The control console is set to the clock down mode when it is turned on. To make the
clock count up, press [CLOCK UP / DOWN]. The console LCD display will read:
GAME UP <1>
CLOCK DOWN <0>
Press [1], [ENTER] on the control console.The letter D in front of the game time on
the console LCD will be replaced with the letter U to indicate that the clock is in the
count up mode. To reset the clock to count down mode, press [CLOCK UP /
DOWN], [0], [ENTER] on the control console.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
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2665-4 Page 13
5. SET SHOT TIMER – The console is programmed with two timers. The timers
should be set prior to the start of a game. The shot timer is preset to 30 seconds. The
out of bounds timer is preset to 5 seconds. To change either one of these times, press
[SET SHOT TIMER]. The console LCD display will read:
000 D15:00 0 000
ST RESET <30>
Press the keypad numbers to set shot timer,[ENTER].The LCD display will then
read:
00 D15:00 0 00
ST OB RESET <05>
Press the keypad numbers to set the out of bounds timer, [ENTER].
6. AUTO HORN – This key allows the operator to control the end of period horn and
the time out horn. The horn sounds for two seconds when the clock reaches 0:00 at
the end of the period. The end of period horn can be disabled by pressing [AUTO
HORN]. The console LCD display will read:
GAME PRESS<1>ON
HORN PRESS<0>OFF
Press [0], [ENTER] to disable the horn. The console LCD display will then read:
T-O PRESS<1>ON
HORN PRESS<0>OFF
The time out horn is normally disabled. To enable the horn to sound at the end of the
time out, press [1], [ENTER] on the control console.
7. TIME OF DAY – The time of day can be displayed on the clock section of the
scoreboard. THE GAME CLOCK WILL BE INOPERABLE UNTIL THE
TIME OF DAY FUNCTION IS TURNED OFF. To turn the time of day clock on,
press [TIME OF DAY].The console LCD display will read:
TIME OF ON <1>
DAY CLOCK OFF<0>
Press [1], [ENTER] on the control console. The console LCD display will then read:
00 C12:00 0 00
SET CLK <12:00>
Press the keypad numbers for the time,[ENTER].The letter C will be displayed on
the console LCD display to the left of the time to indicate that the time of day
function is active. The scoreboard will display the time of day.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
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2665-4 Page 14
8. TIME OUT TIMER – To set the Time Out timer, press [TIME OUT TIMER].The
console LCD display will read:
000 D15:00 0 000
SET T-O <1:00>
Press the keypad numbers for the time, [ENTER].After the ENTER key is pressed,
the letter T is displayed to the left of the time on the LCD display and the TIME OUT
TIMER immediately begins to count down to 0. The scoreboard will not display the
Time Out time.
9. SET GUEST SCORE – To set the guest score, press [SET GUEST SCORE]. The
console LCD display will read:
000 D15:00 0 000
GUEST SCORE<000>
Press the keypad numbers for the score, [ENTER]. EXAMPLE: To set the guest
score to 53, press [SET GUEST SCORE], [5],[3], [ENTER].
10. SET HOME SCORE – To set the home score, press [SET HOME SCORE]. The
console LCD display will read:
000 D15:00 0 000
HOME SCORE <000>
Press the keypad numbers for the score, [ENTER]. EXAMPLE: To set the home
score to 75, press [SET HOME SCORE], [7],[5], [ENTER].
11. PLAYER MATCH GAME – This key is used to display the player who commits a
foul in basketball, the match number in wrestling, and the game number in volleyball.
No change is required on the console to change sports. To set the player number,
match number, or game number press [PLAYER MATCH GAME]. The console
LCD display will read:
000 D15:00 0 000
PLAYER NO. <00>
Press the keypad numbers for the player number, match number, or game number,
[ENTER].EXAMPLE: To set the player number to 15, press [PLAYER MATCH
GAME], [1],[5], [ENTER].
12. PLAYER FOUL – This key is used to display the number of fouls that a player has
committed. To set the player foul press [PLAYER FOUL]. The console LCD
display will read:
000 D15:000 000
PLAYER FOULS <0>
Press the keypad number for the player fouls, [ENTER].EXAMPLE: To set the
player fouls to 3, press [PLAYER FOUL], [3],[ENTER].
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 15
13. (TEAM (MATCH (GAMES GUEST – This key is used to increment the number of
fouls that the guest team has committed.
14. FOULS) POINTS) WON) HOME – This key is used to increment the number of
fouls that the home team has committed.
15. GUEST BONUS – The console is programmed to work with scoreboards with one or
two Guest Bonus indicators. This scoreboard only has one Guest Bonus indicator (a
green B on the left side of the scoreboard). When the [GUEST BONUS] key is
pressed, the Guest Bonus indicator on the scoreboard turns on and ‘b’ is displayed on
the console LCD display as shown below.
000 D15:00 0 000
b00 00 0 00
When the [GUEST BONUS] key is pressed a second time, the Guest Bonus indicator
remains illuminated and ‘B’ is displayed on the console LCD display as shown
below.
000 D15:00 0 000
B00 00 0 00
When the [GUEST BONUS] key is pressed a third time, the Guest Bonus indicator is
turned off and no symbol is displayed in the Guest Bonus field on the console LCD
display.
16. HOME BONUS – The console is programmed to work with scoreboards with one or
two Home Bonus indicators. This scoreboard only has one Home Bonus indicator (a
green B on the right side of the scoreboard). When the [HOME BONUS] key is
pressed, the Home Bonus indicator on the scoreboard turns on and ‘b’ is displayed on
the console LCD display as shown below.
000 D15:00 0 000
00 00 0 00b
When the [HOME BONUS] key is pressed a second time, the HOME Bonus indicator
remains illuminated and ‘B’ is displayed on the console LCD display as shown
below.
000 D15:00 0 000
00 00 0 00B
When the [HOME BONUS] key is pressed a third time, the HOME Bonus indicator
is turned off and no symbol is displayed in the HOME Bonus field on the console
LCD display.
17. GUEST SCORE +1 – This key is used to increment the guest score by 1.
18. HOME SCORE +1 – This key is used to increment the home score by 1.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
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2665-4 Page 16
19. NEXT POSS – This key toggles the possession indicators between guest and home.
When the [NEXT POSS] key is pressed for the first time, the HOME Possession
indicator is illuminated and ‘P’ is displayed on the console LCD display as shown
below.
000 D15:00 0 000
00 00 0 00 P
When the [NEXT POSS] key is pressed a second time, the HOME Possession
indicator turns off, the GUEST Possession indicator turns on, and ‘P’ is displayed on
the console LCD display as shown below.
000 D15:00 0 000
P 00 00 0 00
20. HORN – This key is used to sound the horn for ½ second.
21. CLOCK ON/OFF – This key is used to start and stop the clock.
22. PERIOD – This key is used to increment the period by 1.
23. SET HOME TIME OUTS – This key is used to display the number of time outs that
the HOME team has left. To set the time outs left, press [SET HOME TIME OUTS].
The console LCD display will read:
000 D15:00 0 000
HOME TO’S <5>
Press the keypad numbers for the score, [ENTER]. EXAMPLE: To display that the
HOME team has 3 time outs left, press [SET HOME TIME OUTS],[3], [ENTER].
24. NEW GAME – This key is used to reset all the scoreboard functions to their default
settings. To reset the scoreboard, press [NEW GAME].The console LCD display
will read:
RESET YES<1>
SCOREBOARD NO<0>
Press [1], [ENTER] on the control console. The scoreboard will reset its functions.
25. SET GUEST TIME OUTS – This key is used to display the number of time outs
that the GUEST team has left. To set the time outs left, press [SET GUEST TIME
OUTS]. The console LCD display will read:
000 D15:00 0 000
GUEST TO’S <5>
Press the keypad numbers for the score, [ENTER]. EXAMPLE: To display that the
GUEST team has 1 time out left, press [SET GUEST TIME OUTS],[1], [ENTER].
26. CLEAR – This key clears the information being entered into the control console.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
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2665-4 Page 17
Horn and Goal Lights Operation
The horn sounds for two seconds when the game clock reaches 0 seconds. It sounds for
0.5 seconds when the [HORN] key is pressed. The optional goal lights illuminate when
the horn sounds.
Hand Held Clock Control Unit Operation
The hand held clock control unit has an attached cable that is plugged into a jack on the
control console back plate labeled Clock Hand held. It has one button that is used to
toggle the clock on and off.
Reversible Caption Plates
There are three reversible caption plates located at the bottom of each side of the
scoreboard. These plates have the proper captions for playing volleyball and wrestling.
The caption plates are held in place with small metal tabs. To change a caption, slide the
plate out, turn it so the other side is visible, and slide it back into position. The proper set
of captions for wrestling is POINTS, MATCH, and POINTS. The proper set of captions
for volleyball is WON, GAMES, and WON.
You should reset the scoreboard each time that it is turned on. Test out all the functions
to ensure that the scoreboard is operating properly.
SCOREBOARD SHUTDOWN
1. Place the circuit breaker for the scoreboard in the OFF position.
2. Unplug the control console power cord.
3. Unplug the extension cable.
4. If a ScoreLink 200 RF MODEM SYSTEM is installed with this scoreboard, unplug
the Transmitter’s wall mount power supply.
5. Store the control console and ScoreLink 200 Transmitter in a dry location. These
units are not waterproof.
Proper scoreboard shutdown will help protect the scoreboard and control console from
power surges and lightning strikes.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 18
SERVICING THE SCOREBOARD
While your scoreboard was designed for years of trouble-free operation, some problems
may occasionally occur. Electro-Mech Scoreboard Company offers onsite service in
some areas. In other areas, we can help you contact an independent service technician.
In areas in which service is not available from Electro-Mech Scoreboard Company, we
will make every effort to answer your questions. Our trained personnel at Electro-Mech
Scoreboard Company are ready to answer your questions from Monday to Friday during
the hours of 8 AM to 5 PM Eastern Standard Time. Be sure to know your scoreboard
model number when calling. Scoreboard replacement parts are always available.
Damaged parts can usually be repaired at a significant cost savings. Our convenient toll
free number is listed at the bottom of every page in this manual.
COMPONENT REPLACEMENT
LED Digits And Indicators Replacement
The LEDs that form digits and indicators are soldered on circuit boards mounted behind
metal masks. Do not attempt to replace individual LEDs. In case of a malfunction, the
entire LED circuit board must be removed. To avoid damage to the LED driver
module, always turn off the power to the scoreboard when removing or replacing
LED digits and indicators. Figure 7 shows the components of a LED digit assembly.
LED indicator assemblies are similar in construction.
MASK
6-32 KEP LOCK NUT
6-32 KEP LOCK NUT
LED DIGIT
Figure 7 LED Digit Assembly
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
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2665-4 Page 19
1. Remove the machine screws that fasten the mask to the face of the scoreboard.
Caution: Support the mask with before removing the last screw. The ribbon
cable that connects to the rear of the circuit board is not designed to support the
weight of the assembly.
2. Disconnect the ribbon cable from the rear of the circuit board. Caution: Do not let
the cable hang outside of the scoreboard. It is easily cut by sharp metal edges.
Damage to the ribbon cable may create short circuit paths that will damage the
LED driver module.
3. Place the assembly on a flat surface and remove the 6-32 kep lock nuts that hold the
circuit board in place.
4. Remove the circuit board.
5. Align the mounting holes in the circuit board with the threaded studs on the mask and
install the replacement digit on the mask.
6. Plug the ribbon cable onto the header on the back of the circuit board.
Horn Replacement
1. Remove the machine screws that fasten the mask to the face of the scoreboard.
2. Pull the horn assembly out of the scoreboard and cut the two wires leading up to the
rear of the horn assembly.
3. Splice the new horn assembly wires to the two wires inside the scoreboard.
4. Install the horn assembly and fasten it to the scoreboard face using the machine
screws.
All other components are located behind the PERIOD panel of each cabinet. Figure 8
shows the view behind the PERIOD panel.
Figure 8 SCOREBOARD ELECTRONICS
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]

2665-4 Page 20
LDM1 LED DRIVER MODULE FUNCTIONS
DRIVER MODULE
JACK FUNCTION #1 FUNCTION #2 FUNCTION #3 FUNCTION #4
J1 DRIVER MODULE DC POWER INPUT #1
J2 SERIAL DATA INPUT
J3 SERIAL DATA OUTPUT
J4 CLOCK SECONDS UNITS
J5 CLOCK SECONDS TENS
J6 CLOCK MINUTES UNITS
J7 HOME SCORE UNITS
J8 HOME SCORE TENS HOME SCORE HUNDRED
J9 GUEST SCORE UNITS
J10 HOME FOULS UNITS HOME FOULS TENS
J11 GUEST FOULS UNITS
J12 GUEST FOULS TENS
J13 DRIVER MODULE DC POWER INPUT #2
J14 HORN / GOAL LIGHT RELAY CONTROL
J15 GUEST POSSESSION GUEST BONUS 1 GUEST BONUS 2 DECIMAL / COLON
J16 QUARTER
J17 CLOCK MINUTES TENS
J19 HOME POSSESSION HOME BONUS 1 HOME BONUS 2
J20 GUEST SCORE TENS GUEST SCORE HUNDRED
J21 GUEST TIME OUTS
J24 HOME TIME OUTS
LED Driver Module Replacement
Electrical connections to the LDM1 LED DRIVER MODULE are made with ribbon
cable polarized IDC sockets and locking ramp crimp terminal housings that mate with
jacks on the module. The module is secured inside the scoreboard with four machine
screws.
1. Unplug the electrical connections from the module. Do not cut the plastic tie wraps
around the ribbon cables.
2. Remove the four screws.
3. Remove the module from the scoreboard.
4. Insert the replacement module in the scoreboard.
5. Secure the module with the four screws.
6. Insert the plugs into the jacks on the module.
To avoid damage to the module, always turn off the power to the scoreboard when
removing or replacing it.
Electro-Mech Scoreboard Co. •120 Industrial Parkway •Wrightsville, GA 31096
Phone: [phone] •Fax [phone] •Email: [email protected]