Pioneer DEH-2800 Service Manual - Page 68

OPERATIONAL FLOW CHART, bsens, swvdd

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1 2 3 4 7.3 OPERATIONAL FLOW CHART A Power ON AREF1, VDD, AVDD, AVREF1=5 V Pin 7, 68, 74, 75 B bsens Pin 64 bsens=L asens Pin 63 asens=L C Starts communication with Grille microcomputer. 300 ms swvdd←L Pin 21 Source keys operative D 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. Source ON SYSPW←H Pin 43 E Completes power-on operation.(After that, proceed to each source operation.) F 68 DEH-2800MP/XN/UC 1 2 3 4

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DEH-2800MP/XN/UC
68
1
2
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4
1
2
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C
D
F
A
B
E
7.3
OPERATIONAL FLOW CHART
AREF1, VDD, AVDD, AVREF1=5 V
Pin 7, 68, 74, 75
Power ON
bsens
=L
asens
=L
bsens
Pin 64
asens
Pin 63
swvdd
←
L
Pin 21
Source keys
operative
Completes power-on operation.(After that, proceed to each source operation.)
SYSPW
←
H
Pin 43
Starts communication with Grille microcomputer.
Source ON
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.