Sharp UP-820N UP-820N Operation Manual - Page 266

15 Operator Maintenance In Case of Power Failure Even when power is lost, your POS terminal retains its memory contents and all information on sales entries. • When a power failure occurs while your POS terminal is idling or during an entry operation, it returns to the normal state after power recovery. • When a power failure occurs during a printing cycle, the terminal prints and then carries out the correct printing procedure after power recovery. (See the sample print.) Power failure symbol Print after power recovery In Case of a Printer Error If the printer runs out of paper, the printer will stall, and the "PAPER EMPTY" message will appear on the display. Any key entries will not be accepted. Referring to "Installing and Removing a Paper Roll" in this chapter, install a new paper roll properly, then press the CL key. The printer will print the power failure symbol and resume printing. If the print head is in the "up" position, the printer will stalls, and the "HEAD UP" message will appear on the display. Any key entries will not be accepted. Bring back the print head to the correct position, then press the CL key. The printer will print the power failure symbol and resume printing. Thermal Printing Your POS terminal uses a thermal printer. When the print head is heated to a certain level, printing is made on thermal paper. Cautions in handling the printer • If your POS terminal for an extended period of time, pull the print head release lever toward you so that the print head is set apart from the plate. Printing position • Avoid installing the machine in any of the following places: Dusty or humid places Place exposed to direct sunlight Place where there is iron powder (A permanent magnet and an electromagnet are used in this machine.) • Use the print head release lever only when necessary. • Never pull the paper when it is in consult with the print head. First release the head with the print head release lever, and then remove the paper. • Never touch the surface of the print head. • Never touch the print head and the motor during printing or before they cool down. Head-up position - 264 -