Operational Flow Chart - Pioneer DEH-1850 Service Manual

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7.3 OPERATIONAL FLOW CHART

QQ
3 7 63 1515 0
Power ON
bsens
Pin 64
asens
Pin 63
TE
swvdd←L
L 13942296513
Pin 21
Source keys
operative
Source ON
SYSPW←H
Pin 43
Completes power-on operation.(After that, proceed to each source operation.)
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AREF1, VDD, AVDD, AVREF1=5 V
Pin 7, 68, 74, 75
bsens=L
asens=L
Starts communication with Grille microcomputer.
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.
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7
2 9
8
Q Q
3 6 7 1 3 1 5
300 ms
co
.
DEH-1850/XN/ES
7
8
9 4 2 8
0 5 8 2 9 9 4 2 8
m
8
9 9
A
B
C
9 9
D
E
F
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