Shenzhen Trunda Lighting Co., Ltd.

fault analysis

(1) The whole strip below the headboard is not bright or flashing

1. First, check whether the crystal head of the output terminal of the divider is loose or not in good contact (re-inserting or replacing the new RJ45 crystal head), whether the headboard is connected and reliable as required;

2. Check whether the network is in good condition;

3. Check the power supply, whether the distribution box to the switching power supply is 220V normal power supply, whether the DC positive (+), negative (-) poles are short-circuited, whether the DC positive poles are short-circuited to the ground, whether the switching power supply to the lamps are rated voltage power supply; whether the connection between the power supply and the lamp band is oxidized and contacted unreliably; 4. When the whole lamp band is not on, it is generally the problem of the lamp with power supply or power supply connection. Connecting the test lamp with the head voltage, if the voltage is normal (the voltage volt coincides with the nominal working voltage of the product), it may be damaged by the head plate and can be replaced directly by power failure; if the voltage is abnormal (the external voltage or the voltage is zero), it is necessary to disconnect the pole of the connection between the power supply and the lamp strip directly, and test the power supply voltage, such as the normal output voltage of the power supply (the voltage volt coincides with the nominal working voltage of the product). If the output voltage of the power supply is abnormal, first check whether there is a short circuit of the power supply in the part of the lamp belt, confirm that the power supply can be replaced directly after troubleshooting; 5. Check whether the output port of the controller is damaged (the test of the exchangeable output port);

6. Check whether the headboard is damaged.

7. Check whether the lamp location wiring and effect conversion are normal;

8. When all above are normal, please replace the first board and the first point (section) lamps, and do a good job of waterproof treatment. (2) No or no signal or light below the middle (the front part of the lamp is normal and the back part is abnormal). 1. Please check whether the switching power supply output to the lamp has rated voltage, whether the DC positive (+) and negative (-) poles are short-circuited.

2. Check whether the lamp position wiring and effect conversion are normal; 3. When the lamp shows the same color, the front part is brighter, and the back part is weaker and weaker, the signal output board of headboard or distributor is damaged, or the switch power supply is damaged, or the connection between power supply and lamp band is oxidized and contacted unreliably; 4. All above are normal, please replace the last lamp point in the normal part of signal. And abnormal part of the first light, and do a good job of waterproof treatment. (3) The whole lamp band is uncontrolled (flower screen). Please check whether the connection of the first board is normal. Touch the first board and the bottom of the first lamp point adjacent to the first board with your hand. If it is hot, one or two of the power lines of the lamp band are damaged and broken at the same time. The positive or negative poles of the power supply are short-circuited to the earth. It is recommended that the damage point be found first, and then the first board should be replaced. (4) All of them are not bright. 1. Check whether the power supply trips or the power supply is not delivered.

2. Check whether the main controller, switch and sub-controller are damaged and the connection is normal. (5) Large area is not bright or a small part is not bright. 1. Check whether the power supply trips or the power supply is not delivered;

2. Check whether the switching power supply is damaged.

3. Check whether the sub-controller and the switch corresponding to the sub-controller are running normally when the lamp is not on.

4. Check whether the lamp location wiring and effect conversion are normal. Controller failure (1) All lamps are not on 1. Check whether the main controller and the sub-controller are working properly;

2. Re-insert or replace the new RJ45 crystal head;

3. Check whether the controller''STATE''indicator lights flicker normally. (2) Half of all lamps and lanterns are not on, half are not on or part is not on. 1. Check whether the direct connection between the divider and the divider is normal;

2. Loose connection of mesh connection and bad press connection or wrong line sequence of RJ45 (re-inserting or replacing new RJ45 crystal head);

3. For some reasons, the controller can not work properly (such as AC power supply is not normal)

4. Check whether the controller''STATE''indicator lights flicker normally. (3) The flashing lamp bars are flashing, and the indicator of the distributor is working normally. The reasons for the failure and the solutions are as follows: the 485 differential chip with the headboard or the distributor is damaged or the connecting line is damaged or the connecting line is too long. It is suggested that the problem should be identified first by substitution method, and then replaced and repaired. Power failure (1) Power supply without output voltage is generally short circuit of lamp with power supply line or damage of power supply itself. (2) The output voltage of the power supply is unstable. 1. The connection of the input line of the power supply is unreliable.

2. The input voltage of the power supply is unstable, the diameter of the AC input line is small, or the load exceeds the rated power of the power supply.

3. Damage to the power supply itself (3) High or low output voltage of the power supply generally means that the adjusting button with lamp load exceeds the rated power of the power supply or the output voltage of the power supply needs to recalibrate the position or damage to the power supply itself. (4) The power supply does not work properly after thunderstorms. 1. The connection of power supply wires is not waterproof, resulting in short circuit.

2. Ungrounded protection of power supply. Note: The above fault analysis and removal methods are mainly used for construction site maintenance. First: Require the maintenance personnel of the construction site to have a certain electronic and electrical foundation, and have a deep understanding of online, off-line controller system and sub-controller, headboard, lamp belt, etc. 2. When replacing and repairing unit components on site, refer to the project system lamp-band connection diagram, understand the direction of lamp-point signal and the way of lamp-band winding, and be familiar with the requirements of connection processing for maintenance and replacement; at the same time, ensure that the power system is cut off, avoid the damage caused by the replacement of unit components, and effectively locate the fault accurately to improve the maintenance efficiency. The above is the routine on-site installation guidance and fault analysis.