Operational Flow Chart - Pioneer DEH-P460MP/XM/UC Service Manual

5

7.3 OPERATIONAL FLOW CHART

Power ON
VDD=5V
Pin 41
bsens
Pin 93
bsens=L
asens
Pin 92
asens=L
dsens
Pin 90
dsens=L
ASENSBO←H
Pin 71
CSENS
Pin 77
2V < CSENS < 3V
Starts
communication
with Grille
microcomputer.
swvdd←L
Pin 1
Source keys
operative
Source ON
SYSPW←H
Pin 21
Completes power-on operation.
(After that, proceed to each source operation)
5
6
<
- CSENS 2V, 3V CSENS
=
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
300ms
300ms
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300msec, the oscillator
may be defective.
DEH-P460MP/XM/UC
6
7
<
=
7
8
A
B
C
D
E
F
71
8