When retrieving Toyota check engine light codes with an OBD II scan tool, proceed as follows: 1. Connect scan tool to the 16-pin data link connector (DLC) located underneath the steering column. The connector may have a removable cover. 2. Turn the ignition on.
The player is most likely tuning the strings. Near the chin rest there are four (or five, if the violin has five strings) metal knobs called fine tuners. While the pegs at the other end ARE used to tune the strings, it's usually in conjunction with the fine tuners. The pegs get the string close to tuned, and the fine tuners finish the job.
The most common tuning fork sounds the note of A = 440 Hz. This is the standard concert pitch, used as tuning note by some orchestras. It is the pitch of the violin's second string, the first string of the viola, and an octave above the first string of the cello, all played open.