Essay on Development of Lcd Computer Monitor Trainer

1184 Words Dec 4th, 2014 5 Pages
DEVELOPMENT OF LCD COMPUTER MONITOR TRAINER

LUIS D. DULNUAN JR.

TECHNOLOGICAL UNIVERSITY OF THE PHILIPPINES CAVITE CAMPUS

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INTRODUCTION The idea behind the development of an LCD Computer Monitor Trainer is to have an instructional material in teaching troubleshooting skills and repair of LCD monitors. Compared to a conventional LCD monitors, the trainer provides easy access to the different parts of the monitor particularly the printed circuits boards (PCB). To prevent accidental short-circuits and for safety purposes, test points were provided where voltages can be measured using a voltmeter or oscilloscope, without going to the printed circuit boards. In addition, simulation switches were also included in the design to
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The power supply board, main board and the LCD panel are screwed to an aluminum frame that permits the free turning of attached parts whenever needed during service. The test point module and the simulation switch module are installed on top of the acrylic panel for easy access during measurement and fault simulation. The placement of the different parts is of utmost importance for functionality and aesthetic considerations. Furthermore, the wiring connections needed to interconnect each part are harnessed together for safety and aesthetic purposes. The fabrication procedures are based from the design considerations as seen from the isometric drawing of the project shown in Figure 2 on the next column.

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Figure 2. Isometric drawing

Figure 3. Top view of the LCD circuit boards

Figure 4. Top view of LCD panel
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Table 1. Bill of materials Qty. Unit 1 1 2 1 2 2 30 15 2 1 20 12 3 6 10 10 1 1 Pc. Pc Pcs. Pcs. Meter Meter Pcs. Pcs. Meter Meter Pcs. Pcs. Meter Pcs. Pcs. Pcs. Pcs. Pc. Specifications 17-inch LCD Monitor w/ VGA input and CCFL backlight Synthetic leather attaché case 49 cm x 37.5 cm x 13 cm (LWH) Pre-cut acrylic panel (appendix C) 1 ½ x 2 ft Flexy board 1-inch L-type Aluminum bar ½ x 1 inch hallow Aluminum bar Rivet bolt 1x 1/8 inch stainless screw AWG # 20 stranded wire AWG # 16 stranded wire Mini binding post Hook-up post Solder Sand Paper # 800 Tie Wrap Cushion sticker AC Cord 0-50V DC Voltmeter Unit Total

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