Panasonic CQ-DP738 Operating Instructions Manual page 7

Selecting Auxiliary Source
¢ Press AUX to select AUX Input mode.
. Connect the auxiliary equipment (an optional DCC player deck or
any other appropriate equipment) to the AUX Jack.
Press AUX or MODE again while the AUX mode is operated, the
mode will return to the previous mode. Or insert a CD and the mode
will change to CD mode.
Caution:
In order to insert the plug into the "AUX" Jack properly, make
sure to use the correct size of the stereo plug shown on the left.
A-MIN 1/2" LONG (12mm)
B-MAX 2/5" DIA. (10mm)
C-MIN 1/8" DIA. (3.5mm)
CQ-DP738/728EU