Operational Flow Chart - Pioneer AVH-P5700DVD Service Manual

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7.3.2 OPERATIONAL FLOW CHART

Power ON
A
VDD0=5V
Pin 39
bsens
Pin 69
B
asens
Pin 96
dsens
Pin 83
ASENBO←H
C
Pin 87
SWVDD←H
Pin 109
ACCPW←H
Pin 29
D
Starts
communication
with Display
microcomputer.
Source keys
operative
Source ON
E
SYSPW←H
Pin 31
Completes power-on operation.
(After that, proceed to each source operation)
F
202
1
2
bsens=L
asens=L
dsens=L
Initialization Key
Resending dimand
Response Connection
formation
AVH-P5700DVD/EW
2
3
DISPLAY MICROCOMPUTER
SWVDD ON
Microcomputer
Initialization
Key Scan
Starts
communication
with System
microcomputer
SYS resending
dimand
Comunication
formation
Display processing
3
4
(Sys control)
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