Operational Flow Chart - Pioneer DEH-P3700MP Service Manual

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7.3 OPERATIONAL FLOW CHART

Power ON
A
VDD=5V
Pin 19, 41
bsens
Pin 93
B
bsens=L
asens
Pin 92
asens=L
dsens
Pin 90
dsens=L
C
ASENSBO←H
Pin 71
CSENS
Pin 77
Starts
communication
with Grille
D
microcomputer.
swvdd←L
Pin 1
Source keys
operative
E
Source ON
SYSPW←H
Pin 21
Completes power-on operation.
(After that, proceed to each source operation)
F
64
1
2
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.
DEH-P3700MP/XU/UC
2
3
< <
- CSENS 2V, 3V CSENS
= =
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
3
4
4