Diagnosis; Operational Flowchart - Pioneer DEH-P7000UB Service Manual

5

5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

Power ON
Vcc = 5 V
Pin 14
BSENS
Pin 73
BSENS = L
ASENS
Pin 72
ASENS = L
DSENS
Pin 91
2 V < DSENS < 4.5 V
ASENBO <- H
Pin 80
DALMON <- H
Pin 67
VDCONT <- H
Pin 18
USBCTL <- H
Pin 45
Starts communication
with Grille microcomputer.
SWVDD <- H
Pin 38
OELPW <- H
Pin 20
Source keys
operative
Source ON
SYSPW <- H
Pin 1
AMPPW <- H
Pin 3
Completes power-on operation.
(After that, proceed to each source operation)
5
6
These terminals cause trouble that CDS, USB, and the iPod source do not stand up.
300 ms
500 ms
In case of the above signal, the communication
with Grille microcomputer may fai
If the time interval is not 300 / 500 msec, the oscillator
may be defective.
Whenever an external amplifier is connected, AMPPW becomes Low.
DEH-P7000UB/XN/EW5
6
7
7
8
A
B
C
D
E
F
17
8