4
Rear View Diagram
Figure 2
24. PHONO/LINE OUTPUT RCA JACKS
Allows connection to a stereo system equipped with either a
phono- or line-level input
25. GROUND LUG (threaded thumb screw)
For connection to a pre-amp or ground lug of audio device.
26. PRE-AMP SELECTOR SWITCH
Allows the internal stereo phono pre-amp to be bypassed
when the turntable is used with equipment having magnetic
phono inputs.
27. USB OUTPUT
Use this output to connect your turntable to the USB input of your
computer. Please see included software guide for instructions.
Initial Setup
Assembling the Turntable
The AT-LP1240-USB requires some assembly before first use.
IMPORTANT: Do not connect the AC power cord until assembly
is complete.
Setting the Pre-amp Selector Switch
For increased flexibility of use, this turntable has an internal stereo
phono pre-amplifier. The pre-amp selector switch located in the rear
panel of the turntable [See Figure 2, page 4, #26], selects the internal
stereo pre-amplifier (LINE), or bypasses the pre-amp (PHONO) for use
with systems having specialized magnetic phono input jacks. The audio
output cable’s Red RCA plug is the Right channel; the White plug is the
Left channel.
If the system you are using has a PHONO input, set the pre-amp
selector switch to the PHONO position and connect the turntable’s
output cables to the PHONO inputs on your system, observing Red for
Right channel and White for Left channel.
If your system does not have a PHONO (magnetic phono) input, set
the pre-amp selector switch to LINE and connect the turntable’s output
cables to the Auxiliary (AUX) or other high-level inputs on your system,
observing Red for Right channel and White for Left channel.
When using the turntable with a computer sound card, set the switch
to LINE and connect the turntable to the audio line input on the
computer sound card. Note: An audio adapter (not included) may be
required to interface the two RCA jacks of the turntable output cable to
the computer sound card input.
Assembling the Tone Arm
Note:
A standard stereo cartridge headshell is supplied with the
AT-LP1240-USB. To mount your cartridge (not included) to the headshell,
follow instructions included with your cartridge.
1. Remove the vinyl tie used to secure the tone arm during shipment.
Temporarily secure the tone arm in the tone arm rest with the lock-
ing clamp. [Figure 1, page 3, #18.]
2. Mount your cartridge (not included) to the supplied headshell, follow
instructions included with your cartridge.
3. Attach the headshell assembly by inserting it into the socket at the
front of the tone arm [See Figure 3.] (It’s good practice always to
hold a headshell assembly by the left and right edges of the head-
shell to reduce the possibility of damaging the stylus or disrupting
the cartridge wiring.)
4. While holding the headshell in position, rotate the headshell lock-
ing ring counter-clockwise (to the left). As the ring turns, it pulls the
headshell into its seated position. (Rotate the ring a full turn to the
right to permit removal of the headshell.)
5. With its black dial toward the front, use a screwing motion to attach
the counterweight to the arm extending back from the tone arm
pivot [Figure 1, page 3, #22]; the counterweight will engage the spi-
ral groove in the rear arm section and move forward.
26
27
28
25
24
Figure 3 – Headshell
Assembling the Turntable Platter and Slip Mat
1. Carefully place the turntable platter on the center spindle,
making certain the platter is fully seated on the spindle.
[See Figure 4.]
2. Place the soft black slip mat on top of the platter.
Figure 4 – Platter and Slip Mat
The Dust Cover
The dust cover sits on top of the turntable without a hinge. It is not
intended to be used while playing records.
To place the dust cover on the turntable, carefully lower it onto the
turntable so that the Audio-Technica logo is facing the front of the unit.
To remove the dust cover from the turntable, carefully lift straight up
until the cover is clear of the unit.
Setting Tone Arm Balance and Tracking Force
To allow the cartridge to properly track in a record, the tone arm balance
and tracking force must be carefully set to the cartridge manufacturer’s
specifications. Failure to properly set up the tone arm assembly can
cause damage to the cartridge stylus and/or records.
(
Note:
Once the tone arm locking clamp has been released,
take
extreme care not to damage the stylus
. Do not allow it to drag or
scrape across the slip mat.)
Tone Arm Setup:
1. Raise the tone arm lift.
2. Set the anti-skate adjustment to “0”. [Figure 1, page 3, #20.]
3. Remove the protective stylus cover guard.
4. While gently holding the headshell to stabilize the tone arm,
release the tone arm locking clamp. At this point, the tone arm is
unbalanced and free to swing.
28. AC POWER CORD CONNECTOR
Use to connect the included power cord.
