Operational Flow Chart - Pioneer DEH-P590IBXN Service Manual

5

7.3 OPERATIONAL FLOW CHART

Power ON
Vcc=5 V
Pin 14
bsens
Pin 73
bsens=L
asens
Pin 72
asens=L
dsens
Pin 39
dsens=L
ASENBO←H
Pin 80
CSENS
Pin 91
2 V < CSENS < 3 V
SWVDD←H
Pin 38
Source keys
operative
Source ON
5
6
- 2 V < CSENS < 3 V
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
Starts communication with Grille microcomputer.
300 ms
300 ms
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300 msec, the oscillator
may be defective.
Completes power-on operation.
(After that, proceed to each source operation.)
DEH-P590IB/XN/UC
6
7
SYSPW←H
Pin 1
7
8
A
B
C
D
E
F
69
8