Operational Flow Chart - Pioneer DEH-1400 Service Manual

7.3 OPERATIONAL FLOW CHART

Power ON
VDD=5V
Pin 68
bsens
Pin 63
BSENS=L
asens
Pin 64
ASENS=L
dsens
Pin 65
DSENS=L
ADPW←H
Pin 66
swvdd←L
Pin 41
Source keys
operative
Source ON
SYSPW←H
Pin 42
Completes power-on operation.(After that, proceed to each source operation.)
Starts communication with Grille microcomputer.
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-1400,14
51