Hitachi IJ PH Service Manual page 88

3.3.8 Exhaust Filter Replacement Procedure
[Replacement interval]
- The replacement interval of the exhaust filter is about 4800 hours as a standard, but
the proper replacement interval varies with the printer's operating environment
condition. Replace the exhaust filter at the same time with the air filter (in every
two times).
1 Turn off the power supply.
2 Remove the exhaust cover.
3 Remove the fixing nuts (4 locations), the filter cover and the exhaust filter.
[Configuration of the model PH model ]
Exhaust Filter
Filter cover
*Red mark
Exhaust cover
Nut (4pieces)
Washer (4pieces)
Rear cover
3-33
Exhaust cover
Fixing screw (4 locations)
Fan