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112 Dolby
®
DP570 Multichannel Audio Tool User’s Manual
Regulatory Notices and Fuse Information Fuse Information
E.3.1 Main Fuse
ThemainfuseratingisT1AL(1amp,250V,20mm,time‐lag,lowbreakingcapacity)for
alloperatingvoltages.
Toinspectorreplacethemainfuse:
1. OpenthefusecompartmentdoorintheACpowerinputhousingwithasmall
flat‐bladescrewdriver.SeeFigure E‐1.
2. Checkthat
thefuseintheactive(lower)fusecarrieristhecorrectrating.Thefuse
carriermustbeinsertedintothecompartmentwiththeorientationshownin
Figure E‐1.Donotforcethecarrierintothecompartmentorbothcouldbedamaged.
3. Snapthefusecompartmentdoorclosed.
Figure E-1 Fuse Replacement
E.3.2 Internal Fuse
Theswitchingpowersupplycontainsaseparatefuse.Mostfaultconditionsshouldbe
protectedbythemainfuse.TheinternalfuseratingisF2AL(2amp,250V,20mm,
fast‐acting,lowbreakingcapacity)foralloperatingvoltages.
Warning:Thepowertotheunitmustbeoffwhenthefollowingstepsareperformed.
Ensurethatthemainpowercabletotheunitisnotconnectedtoapowersource.
OPEN THE
DOOR
METAL CLIP INSTALLED
ON SIDE OFUNUSED
CARRIER
ACTIVE
FUSE
INSTALL
FUSE
TOP
FUSE
CARRIER