Operational Flow Chart - Pioneer DEH-P660 Service Manual

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7.3 OPERATIONAL FLOW CHART

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3 7 63 1515 0
A
Power ON
VCC=5V
Pin 14
bsens
Pin 73
B
asens
Pin 72
dsens
Pin 39
C
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
SYSPW←H
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Pin 1
Completes power-on operation.
F
(After that, proceed to each source operation)
64
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bsens=L
asens=L
dsens=L
2V < CSENS < 3V
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-P660/XN/UC
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Q Q
3 6 7
< <
- CSENS 2V , 3V CSENS
= =
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
300ms
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3
4
2 9 9 4
8
1 3 1 5 0 5 8 2 9
m
co
.
4
2 8
9 9
9 4 2 8 9 9