Dolby Laboratories DP570 - Manual (Page 124)

112 Dolby ® DP570 Multichannel Audio Tool User’s Manual
Regulatory Notices and Fuse Information Fuse Information
E.3.1 Main Fuse
The main fuse rating is T 1A L (1 amp, 250 V, 20 mm, time‐lag, low breaking capacity) for
all operating voltages.
To inspect or replace the main fuse:
1. Open the fuse compartment door in the AC power input housing with a small
flat‐blade screwdriver. See Figure E‐1.
2. Check that the fuse in the active (lower) fuse carrier is the correct rating. The fuse
carrier must be inserted into the compartment with the orientation shown in
Figure E‐1. Do not force the carrier into the compartment or both could be damaged.
3. Snap the fuse compartment door closed.
Figure E-1 Fuse Replacement
E.3.2 Internal Fuse
The switching power supply contains a separate fuse. Most fault conditions should be
protected by the main fuse. The internal fuse rating is F 2A L (2 amp, 250 V, 20 mm,
fast‐acting, low breaking capacity) for all operating voltages.
Warning: The power to the unit must be off when the following steps are performed.
Ensure that the main power cable to the unit is not connected to a power source.
OPEN THE
DOOR
METAL CLIP INSTALLED
ON
SIDE OF UNUSED
CARRIER
ACTIVE
FUSE INSTALL
FUSE
TOP
FUSE
CARRIER