SERVICING THE MODEL 2057

While the model 2057 player statistics panel 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 model number when calling.  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 Replacement

The LEDs that form digits 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.  Figure 7 shows the components of a LED digit assembly.

Figure 7  LED Digit Assembly

1. The ribbon cable that connects to the rear of the circuit board is not designed to support the weight of the assembly.
2. 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. Refer to figure 8 in order to plug the ribbon cable IDC connector onto the circuit board in the proper orientation.

Figure 8  LED Digit Ribbon Cable Connection Diagram

All other components are located behind the PLAYER FOULS POINTS panel.  The LED digit assemblies for the first player number, fouls, and points must be removed before removing the panel.  The following steps describe how to remove the PLAYER FOULS POINTS panel:

1. The ribbon cables that connect to the rear of the assembly are not designed to support the weight of the assembly.
2. Damage to the ribbon cable may create short circuit paths that will damage the LED driver modules.
3. Repeat Steps 1 and 2 for the FOULS and POINTS assemblies.
4. Figure 9 shows the components behind the panel.

Figure 9  Electronic Components Locations

LED Driver Module Replacement

Electrical connections to a 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. Do not cut the plastic tie wraps around the ribbon cables.
   1. Remove the four screws.
   2. Remove the module from the scoreboard.
   3. Insert the replacement module in the scoreboard.
   4. Secure the module with the four screws.
   5. Insert the plugs into the jacks on the module.

To avoid damage to the module, always turn off the power to the model 2057 player statistics panel when removing or replacing a LED Driver Module.

LPS3 LED POWER SUPPLY MODULE FUNCTIONS

Figure 10 shows the location of the LPS3 Power Supply Module fuses and jack pins.  The table following the figure lists the fuse ratings, functions, and part numbers.

Figure 10  LPS3 Fuse Locations

LPS3 FUSES

Note:  Other manufacturer’s fuses may be substituted for the Bussmann fuses.

LED Power Supply Module Replacement

Electrical connections to the LPS3 LED POWER SUPPLY MODULE are made with keyed plugs that mate with jacks on the side of the module.  The module is secured inside the cabinet with two machine screws.

1. Disconnect the plugs from the jacks on the module.
2. Remove the two machine screws.
   1. Remove the module from the cabinet.
   2. Insert the replacement module in the cabinet.
   3. Secure the module with the four screws.
   4. Insert the plugs into the jacks on the side of the module.

To avoid damage to the module, always turn off the power to the model 2057 player statistics panel when removing or replacing a LED Driver Module.

The LED Power Interface board distributes the output from the LPS3 power supply module to the LDM6 and LDM7 LED driver modules.

LED Power Interface Board Replacement

1. Unplug the wire assemblies from the jacks on the circuit board.
   1. Unseat the circuit board from the standoffs.
   2. Press the replacement circuit board in place on the standoffs.
   3. Each wire assembly is labeled to indicate the correct jack connection.

The LED EXTRA DIGIT INTERFACE BOARD takes inputs from the LDM6 and LDM7 and outputs to the position #5 fouls digit.

LED Extra Digit Interface Board Replacement

1. Unplug the wire and cable assemblies from the jacks on the circuit board.
   1. Unseat the circuit board from the standoffs.
   2. Press the replacement circuit board in place on the standoffs.
   3. Each wire assembly is labeled to indicate the correct jack connection.