Specifications

Muting the Pre 1 is achieved by placing the Mute/Operate
button (G) in the MUTE position (button depressed); the
output signal is then cut off. To resume listening, place the
button in the OPERATE position (not depressed).
T R O U B L E S H O O T I N G
If at any time the Pre 1 fails to work properly, consult this
checklist:
1. Check that the DC Power Cord is connected.
2. Check that the AC Detachable Power Cord is plugged into
the Pre 1 Detachable Power Cord Socket (I) and is connected
to a live source of AC power. For instance, if using a power
bar, check that the bar is turned on.
3. Ensure that all Input and Output connections are secure for
a proper electrical contact.
4. DISCONNECT THE AC POWER CORD, wait 5 minutes,
remove the chassis covers from the Pre 1 and Power Supply
and check that:
• A “fast-blo” fuse, with a rating of 1.5 Amp/250 V (.75
Amp/250 V for European and Asian versions), is installed in
the cylindrical tube next to the AC power socket.
• The AC power fuse is intact and has not blown. If the fuse
has blown, the thin metal conductor will have melted and the
glass may appear “smoked”. If the fuse has blown, replace
with a fuse of the same rating (1.5 Amp/250V fast-blo for 100
to 120 volt countries and .75 Amp/250V fast-blo for 200 to
240 volt countries). (See Figure 5.)
NOTE: Under no circumstances should you replace the AC
power fuse with one of a higher current rating! Doing so may
cause further damage to the Pre 1 and will also void the war-
ranty. In addition, your continued protection from risk of fire or
shock would be seriously compromised.
• Ensure the tubes are plugged firmly into their sockets as
described in “INSERTION OF THE TUBES”.
5. Be sure the rest of the system is functioning properly (i.e.
source unit, power amplifiers, cables and connections, etc.).
6. With tubes, fuses, covers and power cords in place, check
that the LEDs (E&H) are lighted (glowing light green). If all of
the above troubleshooting steps have been followed and the
LED is not lighted (remains dark green), contact your dealer
or distributor for assistance.
Figure 3 - Alignment of the DC power connector and cable.
Figure 4 - Alignment of the AC power connector and detachable cord.
Figure 5 - Fuse location in the Power Supply and removal.
WARNING-DISCONNECT THE AC
DETACHABLE POWER CORD FROM THE
Pre 1 AND WAIT 5 MINUTES BEFORE
REMOVING COVER, TUBES OR FUSE.