Operational Flow Chart - Pioneer KEH-P6021R Service Manual

7.3 OPERATIONAL FLOW CHART

Power ON
VDD=5V
Pin19
bsens
Pin93
bsens=L
asens
Pin92
asens=L
dsens
Pin2
dsens=L
adpw←H
Pin22
ASENBO←H
Pin71
CSENS
Pin77
Starts
communication
with Grille
microcomputer.
SWVDD←H
Pin23
Source keys
operative
Source ON
SYSPW←H
Pin21
Completes power-on operation.
(After that, proceed to each source operation)
2V<CSENS<4V
300ms
300ms
In case of the above signal, the communication
with Grille microcomputer may fail.
If the time interval is not 300msec, the oscillator
may be defective.
- 2V<CSENS<4V ,
Source returns to the original one(before you open).
CD, MD and TAPE loading functions are available.
Keys except for EJECT key are not available.
KEH-P6021R,P6025
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