Operational Flow Chart - Pioneer DEH-P670MP Service Manual

5

7.3 OPERATIONAL FLOW CHART

Power ON
VCC=5V
Pin 14
Pin 73
Pin 72
Pin 39
ASENBO H
Pin 80
CSENS
Pin 91
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)
5
6
L
L
L
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-P670MP/XN/UC
6
7
< <
- CSENS 2V , 3V CSENS
= =
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
7
8
A
B
C
D
E
F
73
8