Operational Flow Chart - Pioneer DEH-1700 Service Manual

5

7.3 OPERATIONAL FLOW CHART

Power ON
VDD1=5V
Pin 68
bsens
Pin 64
asens
Pin 63
DSENS
Pin 65
swvdd←L
Pin 21
Source keys
operative
Source ON
SYSPW←H
Pin 43
Completes power-on operation.(After that, proceed to each source operation.)
5
6
bsens=L
asens=L
DSENS=L
Starts communication with Grille microcomputer.
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.
6
7
300ms
DEH-1700/XN/UC
7
8
A
B
C
D
E
F
59
8