====parts of barcode reader to be cleaned as shown in figure====
{{barcode reader.jpg|parts of barcode reader}}
====How to clean printer head====
  - Switch of the printer first.
  - Open the barcode printer by pulling two side levers towards the front of the printer.
  - Release the ink ribbon and pull the 'ribbon complex' upwards so that Black portion can be visible.
  - Swipe the head with a piece of tissue roll soaked in 70% isopropyl alcohol solution.
  - Swipe only once in one direction,if another attempt is required than use new piece of tissue roll soaked in 70% isopropyl alcohol solution.

====How to clean printer sensor====
  - Switch of the printer first.
  - Open the barcode printer by pulling two side levers towards the front of the printer.
  - Remove the barcode sticker roll and you will be able to see small black sensor area,as shown in image.
  - Clean the sensor with a piece of tissue roll.(**do not use** 70% isopropyl alcohol solution.)

====How to clean printer roller====
  - Switch of the printer first.
  - Open the barcode printer by pulling two side levers towards the front of the printer.
  - Black coloured printer roller will be visible as shown in image.
  - Swipe the roller head with a piece of tissue roll soaked in 70% isopropyl alcohol solution.
  - Swipe only once in one direction,if another attempt is required than use new piece of tissue roll soaked in 70% isopropyl alcohol solution.
  - Close the printer by pressing the coverlock inside as shown in image and tick sound will be heard when printer close.