The positive polarity of the battery of green laser

If the print head broken needle or drive circuit, then had to get the maintenance department to Symptoms: printer is turned on, nothing happens, simply do not energized. Analysis: The printer has overcurrent protection device, when the current is too large will cause the overcurrent protection, this phenomenon is the basic printer Insurance tube burn. Workaround: open the case, find the fuse in the power portion of the inside of the printer (internal power supply section can be found near the external power supply in the printer), to see whether black or measured with a multimeter to see if the burn, if burn, for a its consistent insurance on it (the fuse marked with the rated current). Some detailed technical parameters of   green laser pointer   will be introduced and described in the following.
Symptoms: When printing on paper an uneven thickness of the black line, whole sheets of paper are so serious effect. Analysis: this phenomenon is generally on a dot matrix printer, too dirty print head or print head and print roller spacing is too small or printed paper is too thick cause. Workaround: Remove the print head, cleaning the print head, or adjust the spacing between the print head and print roller. Printer detector failure analysis and repair. Out of paper detector (PE detector). The detector for the optical coupling device mounted on the feed slot, the function is to detect the printer has paper. Paper, light-emitting diode reflection of light by the paper to reach the photocell, it turns on, the +5 V signal is sent to the CPU. It means the working current or capacity of   laser pointer   can determine how long the battery of the laser pointer can be used.
If the user does not printer paper or paper have been exhausted, LED tube light can not reach the phototube, so that cut-off, OV signal sent to the CPU, the user receives an alarm buzzer and out of paper light. The detector is out of paper error-prone, but in general is also very easy to solve, STAR generic printer, the light-emitting surface of the detector and by the smooth generally placed upward at an angle, and easily covered with dust, blocking the spread of glossy paper, resulting in photoelectric tube constant deadline. The following describes one case of failure. Fault phenomenon: a the AR3200 printer, feed, each time only on paper a few centimeters. Continuous paper loading / back paper / paper, although on paper, but the pressure of the paper lever is not lifted, the online light is not lit, the printer still reported out of paper. They want the battery of  led flash light   can be used longer.
First of all, the process of the the AR3200 printer feed as follows: (1) short paper, the paper sent out of paper above the detector, the detector to confirm the paper after the next process, if the detector is that the paperless movement of the feed end. (2) to grow in the paper, press the paper lever lift the paper to print position, according to the paper Tau empty set, and online ready to print. In the failure, it is clear that repeatedly executes the process (1), that is due to the printer to determine the end of the paperless and therefore can not line print. Fault a clear through the rest of the work is very simple wipe. Should be noted that the non-flat push STAR printer, you generally need to remove the back cover before they can wipe, and should then take the paper to convert the chain, expanding the distance between the roller and the detector in order to operate. The positive polarity of the battery of   green laser   is marked at the bottom of the battery of the laser pointer.
Should be noted that the detector false positives out of paper, not necessarily caused by the error of the detector itself. The use of color or the existing character of the printing paper, is able to absorb more light, the same phototube conduction, not online. There are three ways you can choose: Modify the EDS set out of paper to detect invalid (setting method, see the random operation manual). The printer will unconditionally online printing, regardless of whether the paper. However, doing so has one drawback is that when the user exhausted paper, the printer will continue glue stick meaningless print. Therefore, it is generally not recommended to use this feature. It is the packing list of this kind of   green laser pointer   .