Diagnosis; Operational Flowchart - Pioneer FH-P800BT Service Manual

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5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

A
Power ON
Vcc1 = 5 V
Pin 14
B
bsens
Pin 73
asens
Pin 72
C
ASENBO
Pin 80
SWVDD
D
Pin 38
Source keys
operative
Source ON
E
SYSPW H
Pin 1
Completes power-on operation.(After that, proceed to each source operation.)
F
26
1
2
bsens = L
asens = L
H
Starts communication with Grille microcomputer.
500 ms
H
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.
FH-P800BT/XJ/UC
2
3
500 ms
3
4
4