Pioneer XR-P2000 Service Manual page 42

XR-P160
m BA3835F (IC3701 : DISP. ASSY)
@ Display Control Micro-computer
@ Pin Assignment (Top view)
GND
AOUT
BEFFERENCE CURRENT TEST
PEAK
BPF HOLD
SEL
[RES]
B40Hz PEAK
[Res]
PEAK
a
[RES ]
1)
ia
[Res |
! z PEAK
HOLD
N.C.
64
@ Pin Function
Description
Decoupling capacitor connection terminal
for linear part reference voltage
Decoupling capacitor connection terminal
for logic part reference voltage.
Reference resistor connection terminal
for band pass filter to setting.
fo adjustment is possible by this external
resistor. (However, only entire band shift.)
Not used
Differential amplifier output terminal
OPEN for normal use.
Not used
Differential amplifier input terminal 2
Connected to the audio system GND via
a capacitor.
Differential amplifier input terminal 1.
Audio signal input via a capacitor.
Power source
Output selection control terminal
(Refer to the output selection
logic table.)
Not used
Output selection control terminal
(Refer to the output selection logic table.)
Not used
Test signal input terminal
Connected to GND for normal use.
Multiplexer output terminal
One of the five peak hold voltageband a
is selected and output is executed.
After the ewnd of selection, discharge to
a level of peak value minus 3 db is
executed by means of a reset pulse.
Ground