Diagnosis; Operational Flowchart - Pioneer DVH-P5900MP Service Manual

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5. DIAGNOSIS

QQ
3 7 63 1515 0

5.1 OPERATIONAL FLOWCHART

A
Power ON
Vcc = 5 V
14, 60 pin
BSENS
B
17 pin
ASENS
18 pin
DSENS
16 pin
C
ASENBO ← H
TE
L 13942296513
38 pin
D
SWVDD ← L
5 pin
Source keys
operative
E
Source ON
www
SYSPW ← H
46 pin
F
26
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BSENS = L (B.UP ON)
ASENS = L (ACC ON)
DSENS = L (ACC ON)
Starts communication with Grille microcomputer.
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.
x ao
y
. i
(After that, proceed to each source operation.)
DVH-P5900MP/XN/EW5
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8
Q Q
3 6 7 1 3
300 ms
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.
Completes power-on operation.
3
4
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
m
co
4
9 9
2 8 9 9