Operational Flow Chart - Pioneer DEH-2800 Service Manual

1

7.3 OPERATIONAL FLOW CHART

A
Power ON
B
bsens
Pin 64
bsens=L
asens
Pin 63
asens=L
C
swvdd←L
Pin 21
Source keys
operative
D
Source ON
SYSPW←H
Pin 43
E
Completes power-on operation.(After that, proceed to each source operation.)
F
68
1
2
AREF1, VDD, AVDD, AVREF1=5 V
Pin 7, 68, 74, 75
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.
DEH-2800MP/XN/UC
2
3
3
4
4