38
SC-LX81
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Step 3-1: Power supply, CLK
JA301(Pin 1
8
)
Is the voltage
6
V
?
N
o
5
V
(HDMI OUT1)
Step 3-2 : Reset
R564
RXRST
5
V
(HDMI OUT2/1)
Is the voltage
6
V
?
N
o
5
V
(BD I
N
)
Is the voltage
4.4
V
?
N
o
Replace D1101.
V+5E1
5
V
(HDMI I
N
1)
Is the voltage
4.4
V
?
N
o
Replace D1102.
V+5E2
5
V
(HDMI I
N
2)
V+5E3
Yes
Yes
L1151
3.3
V
(Switch)
V+3R3HD
Yes
X101
X'TAL(HDMI Rx)
N
o
Check the soldering of
IC101. Check the
peripheries of X101.
Replace X101 or IC101.
N
o
Replace IC501 or IC502.
L1152, L1153
1.
8
V
(Switch)
V+1R
8
HD
IC1151(Pin 72)
5
V
-1(Switch)
V+5R1
A
SC-LX
8
1 only
SC-LX
8
1 only
Is oscillation
of 2
8
.322 MHz
?
N
o
R304
Yes
JA351(Pin 1
8
)
Yes
D1101
Yes
D1102
Yes
D1103
Is the voltage
4.4
V
?
N
o
Replace D1103.
5
V
(HDMI I
N
3)
V+5E4
Yes
D1104
Is the voltage
4.4
V
?
N
o
Replace D1104.
Is the voltage
3.3
V
?
N
o
Replace L1151.
Is the voltage
1.
8
V
?
N
o
Replace L1152 and L1153.
Yes
Yes
Yes
TX1RST
Is the voltage
"H" (3.3
V
)?
HDMI section
Check the soldering of IC1051 and
the peripheries of IC1051.
If soldering has not been done
correctly, replace IC1051.
N
o
Check the soldering of IC1051 and
the peripheries of IC1051.
If soldering has not been done
correctly, replace IC1051.
C3
D4
D5
* At BD I
N
.
N
o
Replace IC501 or IC502.
Yes
Is the voltage
"H" (3.3
V
)?
C1
C2
N
o
Replace JA1101.
Check the connection.
N
o
Is the voltage
5
V
?
IC1151(Pin 52)
5
V
-2(Switch)
V+5R2
Yes
* At HDMI I
N
1.
N
o
Replace JA1101.
Check the connection.
N
o
Is the voltage
5
V
?
IC1151(Pin 32)
5
V
-3(Switch)
V+5R3
Yes
* At HDMI I
N
2.
* HDMI Switch.
* HDMI Switch.
N
o
Replace JA1101.
Check the connection.
N
o
Is the voltage
5
V
?
N
o
N
o
Check the parts and
patterns in the path.
Check the parts and
patterns in the path.
