VSX-LX70
47
5
6
7
8
5
6
7
8
C
D
F
A
B
E
Step 3-1: Power supply, CLK
IC1051(Pin 3)
Is the voltage
5 V
?
No
5 V(HDMI OUT)
*(LX70/LX60)
Step 3-2 : Reset
R125
RXRST
5V(HDMI IN1/--) *
Yes
Is the voltage
4.4 V
?
No
No
Check D1101.
Replace D1101.
V+5HD
V+5E0
5V(HDMI IN2/HDMI IN1) *
Yes
Is the voltage
4.4 V
?
No
No
Check D1102.
Replace D1102.
V+5E1
5V(HDMI IN3/HDMI IN2) *
Yes
Is the voltage
4.4 V
?
No
No
Check D1151.
Replace D1151.
V+5E2
5V(HDMI IN4/HDMI IN3) *
Yes
Yes
Is the voltage
4.4 V
?
No
No
Check D1152.
Replace D1152.
No
V+5E3
Yes
Yes
L1101
Is the voltage
3.3 V
?
(Func : HDMI1 or
HDMI2)
No
3.3 V(Cable EQ 1)
Yes
C1
Yes
X101
X
'
TAL(HDMI Rx)
C8
R1
Check L1101,Q1103 and
the peripheries.
Replace L1101,Q1103
or the peripheries.
No
Check the soldering of
IC101. Check the
peripheries of X101.
Replace.
No
Replace IC501 or IC502.
L1151
Is the voltage
3.3 V
?
(Func : HDMI3 or
HDMI4)
No
3.3 V(Cable EQ 2)
C2
A
No
Check L1151,Q1153 and
the peripheries.
Replace L1151,Q1153
or the peripheries.
VSX-LX70 only
VSX-LX70 only
Is oscillation
of 27 MHz
output
?
No
Check the parts and
patterns in the path.
No
R303
TXRST
R2
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.
Step 3-3: Hot Plug Detect
Q1101 (Pin B)
HPDET0(HDMI IN1/--) *
* When connected the source
e
q
uipment to IN1/-.
E1
Is the voltage
"
L
"
(0 V)
?
Yes
JA1101 (Pin 19)
HPD(HDMI IN1/--) *
E2
Is the voltage
"
H
"
(5 V)
?
Check the patterns in the path.
Check Q1101,R1101.
Yes
* When connected the source
e
q
uipment to IN2/1.
No
No
Replace IC501.
No
Replace Q1101 or R1101.
Check the patterns in the path.
No
No
Replace IC501 or IC502.
Yes
Check the parts and
patterns in the path.
No
Is the voltage
"
H
"
(3.3 V)
?
VSX-LX70 only
VSX-LX70 only
Q1102 (Pin B)
HPDET1(HDMI IN2/HDMI IN1) *
E3
Is the voltage
"
L
"
(0 V)
?
Yes
No
No
Replace IC501.
Check the patterns in the path.
