
Extend DIGITAL UNIT using a jig
A
Check power supply voltage.
AUDIO/VIDEO PCB
V +3.3V
:
C3748
+
q
V -5V
:
C3749
-
w
(See
102
page
)
Check the I2C control signsl of video selector IC
(U3703)
CONNECT-2 PCB
I2C(SCL)
:
C3732
e
I2C(SDA)
:
C3733
r
see sample waveform
Check the input signal to video selector IC (U3703)
V
:
C3714
t
Component-Y
:
C3705
y
Component-Cb
:
C3706
u
Component-Cr
:
C3707
i
Check the output signsl from video selector IC (U3703)
V (to Monitor out)
:
R3740
o
V (to Z2 Monitor out)
:
R3731
Q0
V (to DIGITAL PCB)
:
R3736
Q1
Componnet-Y (to Monitor out)
:
R3742
Q2
Componnet-Cb (to Monitor out)
:
R3746
Q3
Componnet-Cr (to Monitor out)
:
R3750
Q4
Componnet-Y (to DIGITAL PCB)
:
R3744
Q5
Componnet-Cb (to DIGITAL PCB)
:
R3748
Q6
Componnet-Cr (to DIGITAL PCB)
:
R3752
Q7
Defective connection of N9014.
Power supply IC flaw.
SPEAKER PCB
U6203(V+3.3V), U6204(V-5V)
Defective connection of the connector.
N5909 or N5910
DIGITAL UNIT flaw.
Input terminal (K3503 / K3501) or the parts
of between video select IC (U3703) flaw.
Video selector IC (U3703) flaw.
Output terminal (K3503 or 3502) flaw .
Defective connection of TV Monitor or TV Monitor flaw
NO
NO
NO
NO
YES
YES
YES
YES
CLK
DATA
I2C communication wave form (sample)
103
Содержание AVR-X7200W
Страница 8: ...Personal notes 8 ...
Страница 204: ...MX25L1606EM2I 12G DIGITAL U102 U202 U302 U402 MX25L1606EM2I 12G Block Diagram 8 PIN SOP 200mil 150mil BLOCK DIAGRAM 204 ...
Страница 210: ...NJW1194A INPUT U3203 U3204 BLOCK DIAGRAM 210 ...
Страница 211: ...2 FL DISPLAY FLD 17 BT 40GINK FRONT SPK Z6801 PIN CONNECTION GRID ASSIGNMENT Y2 q 211 ...
Страница 212: ...ANODE CONNECTION 212 ...