DEH-80PRS/XNUC
20
1
2
3
4
1
2
3
4
C
D
F
A
B
E
5. DIAGNOSIS
5.1 OPERATIONAL FLOWCHART
Vcc = 3.3 V
Pin 14, 60
BSENS
Pin 16
ASENS
Pin 18
DSENS
Pin 17
BSENS = L
Starts
communication
with Grille
microcomputer.
SWVDD <- H
Pin 47
Source keys
operative
Source ON
SYSPW <- H
Pin 36
Completes power-on operation.
(After that, proceed to each source operation)
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.
Power ON
ASENS = L
DSENS = L
CSENS
Pin 89
1.3 V < CSENS < 2 V
-
1.3 V < CSENS < 2 V
Last source returns.
CD loading functions are available.
Keys except for EJECT key are not available.