What are the steps for the installation and commissioning of LED display screens?

What are the steps for the installation and commissioning of LED display screens?

1. Pre-installation Preparation

1. Check the specifications and quantity of all accessories including LED cabinets, power supplies, data cables, control cards and mounting frames.
2. Clean the installation site, measure mounting positions, and mark horizontal, vertical benchmarks and load-bearing points.
3. Pre-test modules by powering on in the workshop in advance to sort out defective parts with dead pixels, color difference and power supply faults.

2. Load-bearing Bracket & Steel Structure Installation

1. Fasten expansion bolts or weld load-bearing keels, and repeatedly calibrate the overall level and verticality.
2. Assemble decorative outer frames, rear maintenance brackets and limit blocks.
3. Install extra waterproof eaves, drainage grooves and lightning protection grounding devices for outdoor screens.

3. Cabinet Splicing & Assembly

1. Place or hoist cabinets according to construction drawings and align splicing locks.
2. Tighten splicing screws, adjust cabinet flatness and keep uniform gaps between cabinets.
3. Connect inter-cabinet data cables and power cords, and separate high-voltage and low-voltage wiring.

4. High & Low Voltage Wiring

1. Install the main distribution box equipped with leakage protectors and branch circuit air switches.
2. Connect main power lines to each cabinet separately, unify the positive and negative poles, and compress wiring terminals tightly.
3. Lay network cables and transmission wires, label each cable. Seal all outdoor joints with waterproof glue and install waterproof connectors.

5. Control System Hardware Installation

1. Install the sending card into the industrial control host or controller case.
2. Fix receiving cards on the back of cabinets and fully insert power wires and data cables.
3. Connect video signal sources: PC, media player, set-top box, camera and other equipment.

6. Sectional Power-on Self-inspection

1. Switch on power section by section. Never energize the whole screen at once to avoid short circuit and fire risks.
2. Check the lighting status cabinet by cabinet to troubleshoot black screen, messy screen, color loss and partial dark areas.
3. Record positions of faulty modules and damaged receiving cards, then replace and repair them.

7. Software Parameter Debugging

1. Launch the LED control software, create a new project and input the actual width and height resolution of the screen.
2. Automatically scan all receiving cards and draw a cabinet layout consistent with the site.
3. Calibrate white balance, color temperature, brightness and grayscale to eliminate color segmentation of the whole screen.
4. Set gamma value and refresh frequency, adjust uniformity to remove light and dark dividing lines between cabinets.
5. Debug functions such as split-screen playback, timing playback, scrolling text, video and picture playback.
   
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8. Fine Calibration of The Whole Screen

1. Correct color difference area by area at close range to eliminate color deviation on splicing seams.
2. Set automatic switching mode of high brightness for daytime and low brightness for night for outdoor screens.
3. Test the performance of cooling fans, temperature control system, lightning protection and waterproof protection.

9. Long-time Aging & Full Function Test

1. Keep the whole screen powered on for 24-hour continuous aging, monitor voltage and temperature in real time, and count newly generated dead pixels.
2. Switch multiple signal sources to test smooth picture transition without lag.
3. Test remote control, timed power on/off and automatic light sensing dimming functions.

10. Site Finishing, Acceptance & Handover

1. Arrange all wire harnesses, fix wire troughs, store redundant cables and clean construction waste.
2. Train customers on software operation, simple fault handling and daily maintenance precautions.
3. Complete on-site acceptance by both parties, and hand over construction drawings, spare parts and warranty documents.