Diagnosis; Operational Flowchart - Pioneer AVH-3400DVD/XUEW5 Service Manual

5

5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

Vdd : pin 15
BSENS : pin 82
ASENS : pin 80
STANBY : pin 20
ASENBO : pin 35
(UC Only)
DDCCLK : pin 92
VD5 : pin 113
VD8 : pin 114
SYSPW : pin 43
5
6
RESET
Vdd=3.3V?
Y
BSENS=L?
Y
ASENS=L?
Y
STANBY=H?
Y
ASENBO←H
DDCCLK←Clock Out
(Frequency of 413.9 kHz)
VD5, 8←H
Starts
Communication
with Display microcomputer
Source keys operate
↓
Source ON
SYSPW←H
AVH-3400DVD/XUEW5
6
7
Standby
7
8
A
B
C
D
E
F
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