Diagnosis; Operational Flowchart - Pioneer DEH-P700BT XN Service Manual

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5. DIAGNOSIS

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3 7 63 1515 0

5.1 OPERATIONAL FLOWCHART

A
B
C
ASENBO <- H
TE
L 13942296513
D
E
www
Completes power-on operation.
F
(After that, proceed to each source operation)
26
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Power ON
Vcc1 = 5 V
Pin 14
BSENS
Pin 73
BSENS = L
ASENS
Pin 72
ASENS = L
DSENS
Pin 58
DSENS = L
Pin 80
CSENS
Pin 91
2 V < CSENS < 3 V
Starts
communication
with Grille
microcomputer.
SWVDD <- H
Pin 38
Source keys In case of the above signal, the communication
operative with Grille microcomputer may fail.
If the time interval is not 500 msec,
the oscillator may be defective.
Source ON
SYSPW <- H
Pin 1
x ao
y
. i
DEH-P700BT/XN/UC
2
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3
8
Q Q
3 6 7 1 3
- 2 V < CSENS < 3 V
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.
500 ms
500 ms
u163
.
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