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-P4400BH/XUUC
6
7
Standby
7
8
A
B
C
D
E
F
29
8