1. GPS display / invisible display content? 1. The brightness of the background light is too low, increase the brightness of the background light under the adjustment of the background light brightness under the background light setting; 2. The background light has been automatically turned off, at this time use the touch pen to point Press the LCD screen, the screen will light up again. Second, customers should choose the appropriate size according to their needs? 1. If you are not driving a passenger car or have special requirements for audio and video playback, a portable GPS navigator with a display between 3.5 and 4.3 inches is the first choice for all models equipped with GPS . Imagine that the visible area of ​​the front windshield is very small for a car, and stacking a 7-inch big guy in front of you will definitely affect normal driving. Even if it is not located in the air-conditioning port, it will appear to be different. Machines that are too large are not portable. 3. GPS click button, there is no correct action? The screen runs randomly? 1. Check if the touch screen is calibrated. If not, please click the "Touch Screen Calibration" button, the system will pop up the "Touch Screen Calibration" interface. Click the center of the cross cursor with the touch pen. The cursor presses: Center, upper left, lower left, upper right, lower right. The path moves until the calibration is successful. The system will automatically close the touch screen calibration interface and return to the system setting main interface. 2. The simulated navigation screen appears to run randomly, there is debris between the screen and the cover, or the protective film is too tight to press the film, remove the debris and remove the protective film and paste it again. 4. GPS map data is accidentally lost? Can't find the map software? 1. The words (program error, please contact the supplier) appear when entering the navigation, indicating that the map data is lost, you need to replace the map software to normal navigation, please contact the local Agents or distributors need to re-purchase maps. Note: Do not withdraw the SD card when it is not completely shut down. Otherwise, the above situation will be caused, and the customer will bear the relevant losses. 2. It appears (the navigation software cannot be found) that the map path is not set. Please reset the path according to the instructions. 5. Why can't GPS receive GPS signals? 1. Depending on the strength of the local GPS satellite signal, the received signal needs to wait for more than 60 seconds, the specific time depends on the signal strength at that time; GPS signals are transmitted once per second, because GPS is used Triangulation principle positioning, so there must be more than three stars to locate successfully, four stars will add height value; 2, the use of car antennas can improve the reception of GPS navigator. When in use, one end is connected to the car antenna hole on the right side of the GPS navigator body, and the other end is attracted to the roof of the vehicle. If the car is equipped with a full set of thermal insulation paper, please use the GPS car antenna to put the antenna through the window and place it on the roof. Please try not to squeeze the antenna when closing the window. (Some cars have [window anti-pinch] equipment, in this case, the gap will be automatically guaranteed); 3. The surrounding buildings are tall and dense, and GPS has the best reception effect in empty mines; 4. US Department of Defense SA Satellite signal interference; 5. Weather factors (sunspots, bad weather-reduce signal strength, but less affect positioning ...); 6. Electrical electromagnetic interference (a few netizens have happened); 7. Under shelter (buildings Here, in the vehicle, insulated paper and metal components are shielded). 6. There is no sound during GPS playback? 1. The volume setting is too low, the volume should be increased; 2. Poor contact with the headset, check whether the headset is plugged in. 7. Why the power supply of GPS is cut off suddenly? 1. Check if the battery power is insufficient. If it is not enough, please use the external power supply to power the system and the battery. 8. Why can't the GPS be turned on? The operation interface is unresponsive? 1. The battery power is insufficient, please supply power to the system through an external power supply and charge the battery at the same time; 2. The battery switch is turned off, please unplug the battery switch; 3. The lock key is locked State, please adjust the lock key. 9. How to use the SD / MMC memory card? 1. The map software of the SD / MMC card, the map data has a copy-proof design, please do not copy or change the map data and file name on the card without permission, otherwise the resulting data The user is responsible for the damage; 2. Do not remove the SD / MMC card when the system is running a navigation program or playing a certain media file, otherwise it will cause damage to the map software, data loss, etc., affecting normal use; 3. Do not store its software information Store in the map folder, and do not let the folder be poisoned; 4. Do not put heavy pressure on the SD / MMC card, do not bend the SD / MMC card, avoid the SD / MMC card from falling and being hit; 5. Avoid high temperature, Use and store under high humidity, do not put the SD / MMC card under high temperature and direct sunlight. 10. How to use the GPS stylus? 1. Click: Click the screen once with the pen tip; 2. Double-click: Click the screen twice with the pen tip; 3. Drag: Click a point with the pen tip, then move the pen tip; 4. Touch pens, ball-point pens, and any sharp and rough objects with a damaged pen tip may cause scratches or damage to the LCD screen. Please use a touch pen with a good pen tip. If it is damaged, do not use it. 11. How does GPS use the car mount to fix the navigator? 1. When using the car mount, please choose the location carefully; 2. Do not place the GPS navigator in a position that will hinder the driving vision; 3. Do not place it at will Do not fix it; 4. Do not fix it where the airbag is located; 5. Do not put it in the inflated area of ​​the airbag. 12. How to use the power adapter to charge the GPS? 1. The first time you use this GPS navigator, you must use the power adapter to charge it; 2. The charging indicator lights red to indicate that charging is in progress, please wait for the battery to be fully charged, do not Unplug the adapter; 3. The charging indicator will change to blue light when fully charged. In the future use, please charge in time if the battery power is insufficient or the battery has been exhausted. 13. How does GPS use the car power adapter to charge? 1. Connect one end of the car power adapter to the power connector on the right side of the GPS navigator body, and the other to the cigarette lighter on the car to power the GPS satellite navigator Charge at the same time; 2. Please insert the car power adapter after the car is started, so as to prevent the instantaneous current of the car from hitting the body and causing damage. 14. Precautions for GPS battery? 1. The machine is powered by a built-in, non-replaceable lithium polymer battery; 2. In order to avoid the risk of fire or burns, please do not disassemble, puncture, collide or discard the battery in fire or In water ;. 3. The battery will rupture, explode, or release dangerous chemical substances. 15. Can the GPS purchased by the customer be replaced by another company map? Yes Pad Mounted Transformer,Wind Power Substation,Step-Up Wind Power Sustation,Step Up Transformer Hangzhou Qiantang River Electric Group Co., Ltd.(QRE) , https://www.qretransformer.com