Operational Flow Chart - Pioneer KEH-1033 XM/EW Service Manual

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7.3 OPERATIONAL FLOW CHART

A
Backup, Acc ON
VDD=5V
Pin 68/74
B
BSENS
Pin 66
ASENS
Pin 65
C
DSENS
Pin 63
TE
L 13942296513
Starts communication
with Grille
microcomputer.
SWVDD
D
Pin 39
SOURCE key
ON
TUNER
ON
E
SYSPW
Pin 54
Completes power-on operation.
www (After that, proceed to each source operation.)
F
44
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BSENS=L
ASENS=L
DSENS=L
300ms
L
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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KEH-1033/XM/EW
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300ms
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4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9