Pioneer DEH-P945R Operation Manual page 83

1. Engage the "TEST MODE".
HSTT ©
In this mode there is sound from the speaker.
3. Decrease or increase the volume.
REP oe ME
Display shows 10—40.
' 4. After selecting your preferred volume setting, deactivate the
"TEST MODE".
ALERT
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5,
: 4 * p28 LUP RFF ALERT
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6.
Setup RFF ALERT
Constant