Daktronics Data Time Series 50 Time & Temperature Display Manual de usuario descargar pdf (Pagina 55)

Maintenance &

Troubleshooting

5-9

5.4.4 Replacing Triacs

If service personnel are skilled in soldering and desoldering techniques, it will be more

efficient to replace failed (shorted) triacs on site rather than exchanging the whole

lamp driver. The key to this is locating the failed triac. Figure 5 (located in

Appendix A) shows the triac assignments for the lamps in the digit. Figure 4 shows

the location and numbering of the triacs on the lamp driver. Identify the failed point on

the display using the lamp test. Locate the corresponding triac and replace it. The

cover and the tray on the lamp driver will need to be removed.

5.5 Structural Inspection

Visual inspection should be done periodically to check the paint appearance and to check for

corrosion, especially at footing bolts and support or guy cables. Fasteners should be checked

and tightened or replaced as required.

5.6 Replacement Parts List

Refer to the following list for replacement parts for Daktronics Series 50 Incandescent Time

and Temperature displays.

Parts Description Daktronics Part #

Lamp, 11S11 DS-1315

Lamp, 15A15 DS-1271 replaced with

DS-1248

Lamp, 15S14 DS-1248

Lamp, 30A15 DS-1076

Lamp, 30R20 DS-1126

Lamp, 33A19 DS-1075

Lamp, 50R30 DS-1281

Lamp Socket X-1142

Lamp Driver, 8 Column (12” Model) 0A-1033-0107*

Lamp Driver, 16 Column 0A-1033-0100*

Triac Q-1021*

Series 50 Controller 0P-1114-01*

Controller Transformer T-1072

Handset 0A-1085-0076

Temperature Sensor/Photocell 0P-1151-0001*

* = Suggested spare parts package

5.7 Unit Exchange/Replacement Procedure

Daktronics unique exchange program offers our clients the quickest, most economical way of

receiving product repairs. If a component fails, Daktronics will send the customer a

replacement. The customer, in turn, sends the failed component to Daktronics. This not only

saves money but decreases the time that the display is inoperable. Daktronics offers repair

and return on a timely basis; in urgent situations, every attempt is made to ship by the fastest

transit method available.

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