Descriptions

• 1、How to ascertain a circuit paper?1）The pixel pitch of the unique LED module needs to be in keeping with the circuit paper;2）The usual LED bead specifications needs to be in line with the circuit paper; 3）Some merchandise have differences between vertical and horizontal lamps (vertical lamps are extra common, whereas horizontal lamps are much less common); If the unique LED module is a vertical lamp, the circuit paper for the vertical lamp must be selected. 2、Measurement method for the pixel pitch of LED module1) Measure the horizontal dimension(W) of the LED module utilizing a caliper ;2) Count the number(N) of LED lamp beads in the horizontal course ;3) Calculation: Pixel pitch (P)=The module size (W)/The number of lamp beads (N) 【Numerical accuracy to 0】 3、Measurement method for LED bead specification1) Measure the horizontal size (X) of LED beads using a caliper;2) Measure the vertical size (Y) of LED beads utilizing a caliper ;3) Calculation: LED bead specification=SMD (X) (Y); 4、The distinction between vertical and horizontal lamp (as proven within the figure) 5 is the Circuit Paper?Circuit Paper is a type of double-layer bendy circuit board。Its thickness is simply 0。6 of the Circuit Paper?Circuit Paper includes screen printing,base material, pads,holes, wires and reducing line ect is the Circuit Paper used?The collision of LED demonstrate right through installation, disassembly and transportation can smoothly result in PCB pad falling off. At this time, you need to use the Circuit Paper to fix PCB to use the Circuit Paper?First step, you need to train the consequent upkeep instruments and consumables: anti-static bracelet, soldering iron, sizzling air gun, multimeter, tweezers, tin wire, solder paste, scissors, screwdriver, lamp beads, Circuit Paper, IC, etc moment step is to scrub the broken pad, scrape the damaged PCB pad with a knife blade, and wipe it with alcohol to stop quick circuit with the Circuit Paper 1/3 step is to chop diverse sizes of Circuit Paper and tin on both sides of the pad, simply so the short circuit of the lamp foot can't be attributable to too much tin fourth step is to adjust the soldering iron temperature to about 320 ℃, clamp the tin-coated Circuit Paper with tweezers on the left hand, align it with the situation of the soldering pad of the PCB lamp tube, press it gently at the pad, after which heat it with soldering iron or hot air gun to make the Circuit Paper and the PCB pad solely fuse, listen in on the normal poles to be aligned;The 5th step is to illuminate the module, reveal in complete white, adjust the brightness to the acceptable range for bare eyes via sweeping obliquely, weld the qualified beads to the Circuit Paper, listen in at the polarity direction of the beads, and check whether or not or now not the pins are connected with the multimeter before welding；Step 6: after the module examine is qualified, the lamp beads in the maintenance section should be filled with glue. (indoor module would not desire glue filling)；

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