Operational Flow Chart - Pioneer deh-p980bt Service Manual

5

7.3 OPERATIONAL FLOW CHART

QQ
3 7 63 1515 0
Power ON
VCC1 = 5 V
ASENBO←H
Pin 65
TE
L 13942296513
communication
with Grille
microcomputer.
SWVDD←H
Pin 2
Source keys
operative
Source ON
SYSPW←H
Pin 99
Completes power-on operation.
www (After that, proceed to each source operation)
.
5
http://www.xiaoyu163.com
Pin 23
bsens
Pin 104
bsens = L
asens
Pin 103
asens = L
DSENS
Pin 137
1.5 V < DSENS < 4.5 V
Starts
x ao
y
i
http://www.xiaoyu163.com
6
8
Q Q
3 6 7 1 3
300 ms
300 ms
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300 msec, the oscillator
may be defective.
u163
.
DEH-P980BT/XN/UC
6
7
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
7
8
9 9
A
B
C
2 8 9 9
D
E
F
115
8