Owner's Manual

ENGLISH
9
External Speakers
VOLUME
CONTROL
+
-
EXTERNAL
SPEAKER OUT
UP
DOWN
Control port for Speaker out
RIGHT
LEFT
GND
GND
: Depending on model
(Depending on model)
• Use only with the 3 Pole 3.5 mm Stereo Jack.
• Do not connect your headphones or earphones to the port
for connecting an external speaker.
Method of Volume control Port
(Depending on model)
• Cable Spec.
GND / UP / DOWN
Each Up / Down pin
is pulled to 3.3 V with
CPU GPIO.
CPU detects transition
from 3.3 V to GND level
for volume control.