See also:

Total trailer weight
Total trailer weight The total trailer weight (trailer weight plus its cargo load) must never exceed the maximum weight shown in the following table. ...

Adjustable level of each volume
...

Forward direction
Type A and B audio Type C audio Turn the “TUNE/TRACK/CH” dial clockwise to skip to the beginning of the next track/file. Each time the dial is turned, the indicated track/file number will increase. ...