Alpine PDR-M65 Owner's Manual page 12

Bass EQ Selector Switch (CH-3/4) (PDR-F50
only)
Set to "+6 dB" or "+12 dB" position when using
for driving a subwoofer.
The center frequency is 50 Hz.
About Power Indicator
Power Indicator
Lights up when power is on.
Is off when power is off.
Indication color
Blue Amplifier circuit is normal.
Red Operating temperature is
(blinking) high.
Red Amplifier circuit is abnormal.
An electrical short has
occurred, or supply current is
too high.
Operating temperature is too
high.
Power supply voltage is too
high.
10
-EN
ALPINE PDR-M65/PDR-F50 68-25285Z55-A (EN/FR/ES)
Input Channel Selector Switch (PDR-F50 only)
Fig. 13
Status
Decrease the vehicle's interior temperature to a
normal level.
The indicator color changes to blue.
Turn off the power supply and eliminate the cause.
Then turn on the unit and verify that the indicator
color has changed to blue.
If it remains red, turn off the unit and consult your
dealer.
Decrease the vehicle's interior temperature to a
normal level.
The indicator color changes to blue.
Use the correct power supply voltage.
The indicator color changes to blue.
a) This switch setting is for selecting
either 2-channel or 4-channel input
mode. When set to "1/2", signal will
be copied from CH-1/2 and sent to
CH-3/4, eliminating the need for
Y-adapters.
b) Setting this switch to "3/4" will keep
both inputs, CH-1/2 and CH-3/4
independent.
A 4-channel source is required for
this mode.
Solution
SYST
Subw
Front
Rear S
Head
Front
PDR-
TYPIC
1 Subw
2 Subw