Operational Flow Chart - Pioneer DEH-1450 Service Manual

QQ
3 7 63 1515 0

7.3 OPERATIONAL FLOW CHART

Power ON
TE
L 13942296513
ADPW←H
Pin 66
swvdd←L
Pin 41
Source keys
operative
www
SYSPW←H
Pin 42
.
Completes power-on operation.(After that, proceed to each source operation.)
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VDD=5V
Pin 68
bsens
Pin 63
BSENS=L
asens
Pin 64
ASENS=L
dsens
Pin 65
DSENS=L
Starts communication with Grille microcomputer.
Source ON
x ao
y
i
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8
Q Q
3 6 7 1 3
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.
u163
.
DEH-1450,1450B
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
9 9
2 8 9 9
51