Operational Flow Chart - Pioneer DEH-P650 Service Manual

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7.3 OPERATIONAL FLOW CHART

A
Power ON
VCC=5V
Pin 14
bsens
Pin 73
B
bsens=L
asens
Pin 72
asens=L
dsens
Pin 39
C
dsens=L
ASENBO←H
Pin 80
TE
L 13942296513
csens
Pin 91
Starts
D
communication
with Grille
microcomputer.
SWVDD←H
Pin 38
Source keys
operative
E
Source ON
www
SYSPW←H
Pin 1
F Completes power-on operation.
(After that, proceed to each source operation)
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2V < csens < 3V
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.
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DEH-P650/XN/UC
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3 6 7 1 3
< <
- CSENS 2V , 3V CSENS
= =
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
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2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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co
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9 9
2 8 9 9