Specifications

Dolby
®
Professional Reference Monitor Manual 45
Appendix A
PRM-4200 Maintenance
ThischapterdescribessomebasicmaintenanceproceduresfortheDolby
®
PRM‐4200.
A.1 Replacing the Filter
YourPRM‐4200hasafilterinstalledthatyouneedtocheckperiodically.Whenthefilter
containsanexcessiveamountofdust,youneedtoreplaceit.
ToreplacethePRM‐4200filter:
1. ObtainanewfilterfromDolbyLaboratories(DolbyPartNumber6321540
).
2. UseaPhillipsscrewdrivertoloosenthetworetainingscrewsatthetopofthefilter
door,whichislocatedonthePRM‐4200rearpanel.
3. Usingbothhands,pullthefilterdooroutoftherearpanel,asshowninFigure A‐1.
FigureA‐1 
FigureA‐2 
Figure A-1 Remove Filter Door