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You are here: Home / News & Blog / Company News / 55 Check Lists of Final Inspection for Outdoor LED Screen Display

55 Check Lists of Final Inspection for Outdoor LED Screen Display

Views:30     Author:Site Editor     Publish Time: 2019-04-18      Origin:Site


Do you want to get high quality of led screen display while buying a reasonable cost of the led screen, but need an expert opinion? 


In order to take into account all aspects be sure to ask manufacturers and suppliers to make an inspection checklist for the LED display.


Adhaiwell LED has acquired a unique experience in the LED Display quality control. 


We are proud to provide the most advanced quality control in LED screen field, performed by inspectors with years of experience.


China Led Display Billboard Manufacturer - HAIWELL


Outdoor SMD LED Screen Display

Final Inspection 

55 - Points Checklist

SECTION  1: GENERAL INFORMATION
Project No. : 
Model : SMD LED Screen Display
Client: 
Inspector:
Date:
SECTION  2: ORDER INFORMATION CHECK


PassRejectN/A
1Control system brand: NOVA Nova
2LED lamp specifications / die brand: NATIONAL STAR
3Driver IC Model / Brand : SUM2017 / 1920HZ
4Power supply model/brand: MEANWELL
5Module model number/size:
6Box structure / size model / material / label
SECTION  3: VISUAL INSPECTION


PassRejectN/A
7The surface of the module is uniform in color, no lamp is concave, and the lamp is biased.
8The flatness of the module surface is within the range of 1M ≤ 0.5mm
9Module assembly gap ≤ pixel pitch 5%
10The surface of the box is free from scratches, oxidation, damage, and deformation.
11The lock, handle, positioning pin, door lock, corner chain, etc. are not damaged, no oxidation; the function meets the requirements.
12The mounting hole of the box has no sliding teeth, paint, oxidation
13Power line polarity, length/data line polarity/capacitor polarity can not be wrong
14No xenon lamp, less light, manual take-up
15After the box is finished, the module needs to be centered, the edge, and the seam is within 0.3MM.
16Waterproof rubber ring should not be leaked, glue and three anti-paint paint in place
17Inside the cabinet, no tin slag, screws, wire ends, etc.
18The lock module, power supply, fan, and other screws are not loose, no leakage phenomenon; the terminal screw is not loose
19Warning, the grounding mark is correctly pasted, no missing stickers
20The box door is closed tightly after being locked, without deformation
21The screen printing pattern of the box is correct, no screen printing is bad.
SECTION  4: STITCHING TEST


PassRejectN/A
22The cabinet power cord and data cable are connected without any defects.
23Assembling Check the box connecting piece, the lock is functioning normally.
24The box connecting piece, the lock is used normally.
25Inside and outside the box, left and right, the upper and lower power cords are connected normally, no tightness, no loose connection
26Box assembly gap ≤ 10% of pixel pitch
SECTION  5: FUNCTIONAL TEST


PassRejectN/A
27Screen brightness ≥ cd / m2
28Color coordinates: X:                  Y:
29Left and right viewing angle ≥         
Up and down ≥
30Gray level:
31Frame change frequency:
32Refresh frequency:
33Out of control pixel points ≤ 0.3/ 10000
34The video plays smoothly, clearly and in pure colors. No flicker, no smear, no jitter, no shadow
35Scan, R, G, B, W brightness, uniformity of chromaticity; no dark, string, color, lack of color
36Is the ink color consistent in the whole screen black screen state?
37There are no dead lights / severe flower screen phenomenon
38Whether the white screen brightness/color temperature/coordinate/constant current output meets the debugging requirements;
39Whether the brightness/color temperature of the white screen and the monochrome level meets the requirements at 255 levels;
40White screen and monochrome at 30 or above brightness/chromaticity meet the requirements"
41Power (single box maximum power ≦ W)

SECTION  6: RELIABILITY TEST



PassRejectN/A
42Power failure test: power off 3 times, large screen playback is normal, no function problem
43Withstand voltage test: high voltage 1500V test 60S leakage current <100mA
44Grounding resistance test: 25A test 60S grounding resistance <0.1 ohm
45Leakage current test: less than or equal to 0.25MA
46Waterproof test front IP65; back IP
47Insulation withstand voltage test: 1500W, 20MA, 5-10S, no breakdown
48Aging: indoor screen for at least 18 hours or outdoor for 72 hours
49Vibration test
SECTION  7: PACKAGING INSPECTION


PassRejectN/A
50Box weight ≦KG;
51Packing method: Number of packages:
52Printed labeling specifications are correct and clear
53The package is complete and intact, and the accessories are complete.
SECTION  8: SPARE PARTS INSPECTION


PassRejectN/A
54The list of spare parts is checked, and there are no missing parts.
55The equipment has no appearance, poor function and reasonable packaging.


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