说明

• 1、How to determine a circuit paper?1）The pixel pitch of the unique LED module must be per the circuit paper;2）The standard LED bead specifications must be in line with the circuit paper; 3）Some merchandise have versions between vertical and horizontal lamps (vertical lamps are more common, while horizontal lamps are less common); If the unique LED module is a vertical lamp, the circuit paper for the vertical lamp ought to be selected. 2、Measurement formula for the pixel pitch of LED module1) Measure the horizontal dimension(W) of the LED module using a caliper ;2) Count the number(N) of LED lamp beads within the horizontal route ;3) Calculation: Pixel pitch (P)=The module length (W)/The number of lamp beads (N) 【Numerical accuracy to 0】 3、Measurement components for LED bead specification1) Measure the horizontal size (X) of LED beads utilizing a caliper;2) Measure the vertical size (Y) of LED beads utilizing a caliper ;3) Calculation: LED bead specification=SMD (X) (Y); 4、The contrast between vertical and horizontal lamp (as proven within the figure) five is the Circuit Paper?Circuit Paper is a kind of double-layer flexible circuit board。Its thickness is just 0。6 of the Circuit Paper?Circuit Paper includes reveal printing,base material, pads,holes, wires and slicing line ect is the Circuit Paper used?The collision of LED show throughout installation, disassembly and transportation can easily bring about PCB pad falling off. At this time, you can use the Circuit Paper to repair PCB to use the Circuit Paper?First step, you need to practice the ensuing maintenance instruments and consumables: anti-static bracelet, soldering iron, scorching air gun, multimeter, tweezers, tin wire, solder paste, scissors, screwdriver, lamp beads, Circuit Paper, IC, and so forth moment step is to wash the broken pad, scrape the broken PCB pad with a knife blade, and wipe it with alcohol to stop brief circuit with the Circuit Paper 0 step is to chop diverse sizes of Circuit Paper and tin on both sides of the pad, so that the short circuit of the lamp foot cannot be attributable to an immoderate quantity of tin fourth step is to adjust the soldering iron temperature to about 320 ℃, clamp the tin-coated Circuit Paper with tweezers at 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 warmth it with soldering iron or sizzling air gun to make the Circuit Paper and the PCB pad completely fuse, eavesdrop on the typical poles to be aligned;The fifth step is to light up the module, exhibit in complete white, adjust the brightness to the acceptable fluctuate for bare eyes by way of sweeping obliquely, weld the certified beads to the Circuit Paper, listen in on the polarity route of the beads, and test whether or not the pins are related with the multimeter before welding；Step 6: after the module examine is qualified, the lamp beads within the maintenance section have to be filled with glue. (indoor module doesn't desire glue filling)；

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