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TNMC Troubleshooting & Maintenance
– Model BA-2018
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7.8 Power Supplies
Power supply configurations will vary depending on the number and/or color of modules.
Replacing a Power Supply
To remove a power supply from the display:
1. Access the internal components using the appropriate Front/Rear Access method
described in Section 7.5 .
2. Disconnect all the wires connected to the power supply.
3. Use a 9/32" nut driver to remove the hardware securing the power supply.
4. Fasten the new power supply in place and reconnect all wires.
7.9 TNMC Maintenance
Complete a yearly inspection to maintain safe and dependable display operation.
This inspection should address the following issues:

Loose Hardware : Verify that fasteners, such as bolts and rivets, have not come loose.
Check and tighten or replace fasteners as required.

Excessive Dust Buildup: It may be necessary to occasionally vacuum the inside of
the display cabinet to remove dust/dirt buildup that may interfere with airflow.

Water Intrusion – Water stain marks: Water can enter the display where weather-
stripping has come loose or deteriorated; where fasteners have come loose, allowing
gaps in the panels; or where moisture may be entering around hardware. Check
electronic components for corrosion.

Corrosion: Check the paint, and look for possible corrosion, especially at footings,
structural tie points, and ground rods and other types of grounding electrodes.
Note: If any of the preceding conditions are discovered, make the necessary repairs
or take corrective action immediately.
7.10 Replacement Parts List
The following tables contain TNMC components that may have to be replaced. Many of the
components within the display itself have attached part number labels.
Part Description Part Number
Ribbon Cable, 30" (TNMC driver to first module) 0A-1000-0017
Ribbon Cable, 36" (module to module) 0A-1000-0018
TNMC Driver Assembly 0A-1192-2549
TNMC Driver Assembly (240 V) 0A-1192-3388

4-col MASC Driver 0A-1192-0068

Transformer; 115/230 V pri, 16 V sec
@
2 A T-1063
Power Supply Assembly; Amber TNMC 0A-1192-2551