Diagnosis; Operational Flowchart - Pioneer MVH-X580BS Service Manual

5

5. DIAGNOSIS

5.1 OPERATIONAL FLOWCHART

Signal on System ucom(IC501)
Power ON
VDDIO_On = 3.3V
bsens
asens
dsens
VDDENH
VDDIO3.3V = 3.3V
VDD1.2V = 1.2V
Starts
communication
SOC
SWVDD = 5.2V
Starts
communication
LCD driver
Source ON
SYS+B5.7V = 5.7V
Completes power-on operation.
(After that, proceed to each source operation)
5
6
VDDIO_On : Pin E13
bsens : Pin A18 or IC201 Pin40
bsens = L
asens : Pin A15
asens = L
dsens : Pin A17
dsens = L
VDDEN : Pin B15
VDDEN = H
VDDIO3.3V : Pin E6,E7,E8,F7,F8,M6-M14
VDD1.2V : Pin E9,E10,F6,F9,G5,N5,N6,N10-N13
SWVDD : IC201 Pin1
SYS+B5.7V : IC201 Pin16
MVH-X580BS/XNUC
6
7
7
8
A
B
C
D
E
F
9
8