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UP4000 – 8
Internal Settings
There is one setting that can be changed inside
the UP4000 Series Amplifier. This setting should be
made prior to installation.
CAUTION: These servicing instructions
are for use by qualified personnel only. To
avoid electric shock, do not perform any
servicing other than that contained in the Operating
Instructions unless you are qualified to do so.
Refer all servicing to qualified service personnel.
Make sure the power is off and the power cord
disconnected
before removing the top cover to gain
access to the inside of the UP4000 Series.
STANDBY MODE
Jumper J1 on the input board allows you to
enable the Standby function. Standby mode is
disabled by default. You must change jumper J1 on
the input board to enable the Standby function.
Thermal Considerations
IMPORTANT: The UP4000 Series amplifier is
convection cooled rather than fan cooled. Heat is
drawn away from the amplifier by the heatsink and
radiated through the cooling vents in the top cover.
When installing the UP4000 Series, be sure to
allow sufficient air space around the top and rear of
the amplifier to allow adequate cooling for the
heatsink.
Leave at least one rack space above and
below the UP4000 and at least 6 inches behind the
chassis to allow proper ventilation.
If the amplifier should overheat, a thermal
switch is activated that turns off the power
amplifier, allowing the heatsinks to cool down. The
ON
indicator on the front panel will remain lit. Once
the amplifier has cooled to a safe operating
temperature, the thermal switch resets and
reactivates the amplifier. If this should occur,
identify the cause of the problem and take
corrective action (i.e.,
provide better
ventilation, install a fan
in the rack, make sure
the amplifier is not
overloaded by too low
of a load impedance or
by a short circuit on the
speaker line).
UP4000 Series Input Board Jumper
J1
1
2
3
STANDBY DISABLED
(DEFAULT)
STANDBY ENABLED
JP6
UP4000 SERIES
INPUT BOARD
AC Power Considerations
The UP4000 Series draw an average AC line
current as indicated on the following chart:
115VAC 230VAC
UP4060 1.5A 0.8A
UP4120 4.0A 2.0A
UP4160 4.8A 2.4A
Voltage Conversion
The UP4000 Series can be configured to operate
at 115 VAC or 230 VAC. Be sure the
VOLTAGE
SELECTOR
switch on the rear panel is set to the
correct position for the AC power supply being used.
115
VOLTAGE
SELECTOR
230
VOLTAGE
SELECTOR