Laser pointer all have a power switch

laser pointer all have a power switch.
Hold the disc in the tray frame the moment of falling into the spindle seat, the axial position of about 30 degree angle to observe the aura of the laser focus lens edge release in the bald, the judgment reflects the red beam than normal machine halo is much weaker, which can basically determine the normal working of the laser head or not. If found a red laser beam is much weaker than normal machine, then the laser head is not dirty, is aging. When dirty or aging of the laser head assembly, it may appear the following symptoms: quality slightly worse or slightly dirty disc put no image or be able to release the images and sound during playback of job-hopping phenomenon and a serious Mosaic phenomenon. 90% of laser pointer on market are without power switches.
Play karaoke discs, the first few songs are sometimes intermittent phenomenon, and machine vibrations; image is normal, but the sound automatically goes into analog form (ie karaoke discs each play all original music status); can not play VCD discs, press the playback button, after a few seconds, then automatically exit the disk; disc loaded while automatically exit, not enter the normal playback state, but show normal; tray out of the normal display normal, press the playback button and selections key corresponding display, but after a few seconds the display shows "OLD" or "with ILD, followed by" OPEN ", while" Titicaca "sound machine, pallet exit. Besides, laser pointer are electricity-saving.18650 battery of laser pointer has its specific charger for charging
Into the disc, check no signal, the display shows "NO DISC" symbol. In the maintenance of the above failures, should first check disc deformation is uneven or whether the scratches and dirt, make sure no exception and then check the machine itself is the cause of the malfunction. When the machine properly into the dish, and the laser head assembly radial search movement, vertically focused search action, the normal machine control systems and servo work also shows that the fault does come from the laser head assembly. Through observation, not difficult to find the laser head is dirty, clean shaved head components (not lens shift too much) and still can not make the machines work properly only improved, but the effect is still very poor, could be considered a laser diode the problem of aging. Logos of laser pointer can be customized according to users’ needs.
The quality of the laser diode to determine the following three methods. Resistance measurement method: In general, the laser diode forward resistance of about 15kΩ ~ 25kΩ, reverse resistance presents infinite; aging of the laser diode forward resistance of 50kΩ or more, reverse resistance is approximately 700kΩ 900kΩ around.