20. Why the Status light shows red when I insert a new cartridge? ............................................................ 3421. What’s the meaning of status displayed by the status indicator? .......................................................... 3422. What’s the meaning of status displayed by the power indicator? ......................................................... 34③ Paper Issues: ................................................................................................................................................... 3523. How can I clear any paper jam in the printer? ........................................................................................ 3524. Print jobs stuck in paper curve. What should I do? ................................................................................ 3725. How to cancel the “duplex printing” under Windows? .......................................................................... 3726. How to check the toner’s serial number location: .................................................................................. 3827. How to check the drum unit’s serial number location: .......................................................................... 3928. How to check the printer’s serial number location: ............................................................................... 3929. How to adjust letter format in the printing document? ......................................................................... 4030. What is my M6700/M7100/M6800/M7200 series printer Specifications? ............................................ 4231. What kinds of paper can I use in my Pantum M6700/M7100/M6800/M7200 series printer?.............. 4332. How to print multipage on one page? .................................................................................................... 4333. How to do Duplex Printing on Windows system? ................................................................................... 45④ Printer Compatible Issues: .............................................................................................................................. 4634. Is my printer Mac compatible? What are the versions that it is compatible with? ............................... 4635. Is my printer Linux compatible? What are the versions that it is compatible with? .............................. 4636. Is my printer Windows compatible? What are the versions that it is compatible with? ....................... 4637. Could I download the APP from Google Play? ........................................................................................ 4638. Is my printer compatible with Chrome OS system?................................................................................ 4639. Is my printer compatible with Linux OpenSuse system? ........................................................................ 4640. Is my printer compatible with Linux Debian 9 system? .......................................................................... 47⑤ Normal Printer Issues: ..................................................................................................................................... 4741. Why the printer could not feed paper successfully? .............................................................................. 4742. Why it will be smoked when printing?.................................................................................................... 4743. What is the power requirement will be need? ....................................................................................... 48