Explanation; Operational Flow Chart - Pioneer DEH-P8MP Service Manual

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7.3 EXPLANATION

7.3.1 OPERATIONAL FLOW CHART

Power ON
VDD=5V
Pin 14,60
bsens
Pin 73
bsens=L
asens
Pin 72
asens=L
DSENS
Pin 91
1.5V < DSENS < 4.5V
ASENBO←H
Pin 80
Starts
communication
with Grille
microcomputer.
SWVDD←H
Pin 38
Source keys
operative
Source ON
SYSPW←H
Pin 1
Completes power-on operation.
(After that, proceed to each source operation)
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WWW.PCBOOK.IR
6
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-P8MP/XN/UC
6
7
7
8
A
B
C
D
E
F
81
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