Diagnosis; Operational Flowchart - Pioneer deh-p7200hd Service Manual

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5. DIAGNOSIS

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5.1 OPERATIONAL FLOWCHART

A
Power ON
VCC1 = 3.3 V
Pin 14
BSENS
Pin 16
B
ASENS
Pin 18
DSENS
Pin 17
C ASENBO <- H
Pin 38
TE
L 13942296513
Starts
communication
with Grille
microcomputer.
SWVDD <- H
Pin 47
D
Source keys
operative
Source ON
SYSPW <- H
E
Pin 36
Completes power-on operation.
(After that, proceed to each source operation)
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BSENS = L
ASENS = L
500 ms
500 ms
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 500 msec, the oscillator
may be defective.
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