Hitachi PB Series User Manual page 105

Section 8
2. Remove the air filter and place a new filter, making sure the orientation is correct.
(1) First insert the top of air filter.
3. Reattach the air filter cover.
(1) First hook the square slot at the
bottom of air filter cover onto the
projecting tab of printer.
Insert the filter completely. If not, dust may enter the printer and cause a
failure.
(2) Place the bottom of air filter on the
guide.
(2) Turn the knob until the air filter cover
comes into contact with the printer.
CAUTION
8.3 Parts to be replaced periodically 8–3