Genuine Toshiba owner's manual. Couldn't really ask for more. And written in understandable English in contrast to a few recent experiences I have had with manuals for other equipment other than Toshiba but made in China and written in "Chinglish"!
Text excerpt from page 17 (click to view)
Maintenance and cleaning
Ensure that the seals around the door, the detergent and rinse aid dispensers are cleaned regularly with a damp cloth. We recommend the use of Finish Dishwasher Cleaner every 3 months or run a 65Â°C wash without dishes using detergent. Regular use of Finish Dishwasher Cleaner cleans inaccessible parts, eliminates unpleasant food odours and helps prevent the build-up of limescale.
Cleaning the central filter
(After each wash) Scraps of food may accumulate in the drain filter (A) and should be removed by rinsing the filter under running water. To remove the drain filter - simply pull it out by the handle. Once cleaned, refit the filter by pushing it back to its original position until it engages.
Cleaning the large filter
(Every week) If necessary clean the large filter (B) on both sides under running water, using a brush. To remove the large filter 1. Remove the spray arm by pulling it upwards on one side. 2. Turn the column (C) anticlockwise by 90Â° and then slide out the filter. 3. Once cleaned refit it following the above instructions in reverse order. 4. Ensure the filter is in its original position, the handle of the drain filter should be pointing towards the front of the appliance.
The dishwasher must not be used without filters. Incorrect repositioning and fitting of the filters will produce poor washing results. Cleaning the filters is vital to ensure correct operation of the machine.