Diagnosis; Operational Flowchart - Pioneer AVH-P5200BT Service Manual

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5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

A
/BSENS : Pin20
B
/ASENS : Pin21
/DSENS : Pin176
/STANBY : Pin90
C
/SOCSTBY : Pin91
ASENBO : Pin35
DDCCLK : Pin92
D
VD5, 8 : Pin113, 114
E
SYSPW : Pin130
F
40
1
2
RESET
VDD : Pin11
VDD = 3.3 V?
/BSENS = L?
Y
/ASENS = L?
Y
/DSENS = (1.15 V to 1.95 V)?
Y
/STANBY = H?
Y
/SOCSTBY = H?
Y
ASENBO <- H
DDCCLK <- Clock Out
(Frequency of 370 kHz)
VD5 <- H
VD8 <- H
Starts
Communication
with Display microcomputor
Source Keys operartive
Source ON
SYSPW <- H
AVH-P5200BT/XNUC
2
3
Standby
3
4
4