Harley Benton EUB 500 SB / BK, Руководство пользователя, Страница: 14 / 20

6 Maintenance
6.1 Changing strings
Strings are subject to a natural aging process, which is also affected by the frequency
of use of the instrument. Changing the strings is recommended if the sound quality
of the instrument decreases audibly. Always replace the complete set of strings
(strings of 3/4 length) and always go string by string. In this way you avoid a strong
temporary bending of the neck due to reduced string tension. The bridge also
remains in the correct position and does not have to be readjusted.
1.
For example, loosen the run-down E string from the capstan of the machine
head and from the tailpiece.
2.
Thread the new E string into the tailpiece, pull it over the bridge into the cap‐
stan bore of the machine head.
3. Hook the string end to the capstan and tighten the string tension slowly. At the
first windings, pay particular attention that the string is taut to the mechanics.
4.
Make sure that the string is running correctly through the grooves of bridge
and nut at the upper end of the neck.
5. Slowly increase the string tension until the correct pitch is reached. Use a tuner
or a pitch pipe for reference.
6.
Proceed in the same way with the A, D and G strings and then tune all strings
again successively to the correct pitch. Note that the string tension will drop a
little and the instrument needs to be retuned several times until the strings
stay in tune.
6.2 Battery change
Replace the inserted battery if necessary (weak output signal) or at regular intervals.
Before changing the battery, drag out the endpin of the instrument so far that the
battery compartment cover can be opened ( Ä Chapter 4.1 ‘Setting the height’
on page 9 ).
To open the battery compartment cover, slightly push the locking mechanism
inwards with a finger. Remove the battery and unplug the connection cable from the
battery terminals.
Clamp the power cable with the correct polarity to the new battery. Insert the battery
into the battery compartment and close the battery compartment cover. It must
audibly click into position.
Then re-align the endpin to your playing position (
Ä Chapter 4.1 ‘Setting the height’
on page 9 ).
Proceed as follows to change the
strings:
Maintenance
electric upright bass
14