46
VSX-LX51
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Step 4-4: I2C
IC501 (Pin 30)
VCSDA
C
No
Check the parts and patterns in
the path(IC501 - IC401,601).
No
Replace IC501, IC401 or IC601.
Yes
IC501 (Pin 29)
VCSCL
C
No
Check the parts and patterns in
the path(IC501 - IC401,601).
No
Replace IC501, IC401 or IC601.
Yes
Step 4-5: VIDEO CLK, DATA
IC601 (Pin 48)
LLC
K
Is there a
CLK?
No
Check the parts and patterns in
the path(IC401 - IC1601).
No
Replace IC401.
Yes
IC601 (Pins 2-9)
P22-P29
K
Is there a
DATA?
No
Check the parts and patterns in
the path(IC401 - IC601).
No
Replace IC401.
Yes
B
Yes
Does
a clock output in
constant period
(0 - 3.3 V)
?
Does
a signal output in
constant period
(0 - 3.3 V)
?
Check the X401 or IC402.
No
Replace X401 or IC402.
IC402 (Pin 7)
XTAL
J
No
Is there a CLK
(28.63636 MHz)
?
Check the parts and patterns in
the path(IC601 - CN1002).
No
Step 4-6: VIDEO OUTPUT
IC601 (Pin 35)
DAC A
K
No
Check the IC601.
No
Replace IC601.
Yes
Q631 (E)
CVBS OUT
L1
No
Yes
Diagnose the MAIN Assy.
Replace L631, Q631 or the
peripheries of L631 or Q631.
Is there a
composite
signal?
Is there a
composite
signal?
Step 4-3: Reset, X'tal
IC501 (Pin 3)
XVCRST
C
Is the voltage
"H"(3.3V)?
No
Check the parts and patterns in
the path(IC501 - IC401).
No
Replace IC501.
Yes
*Only 480i/576i input.
Summary of Contents for VSX-1018AH-K
Page 8: ...8 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 2 2 SPECIFICATIONS LX51 13 3 kg 1018AH ...
Page 9: ...9 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F 2 3 PANEL FACILITIES 1 Rear panel VSX LX51 ...
Page 10: ...10 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 VSX LX51 2 Front panel ...
Page 11: ...11 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F 3 Display ...
Page 12: ...12 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 4 Remote control AXD7518 VSX LX51 Only ...
Page 13: ...13 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F ...
Page 75: ...75 VSX LX51 5 6 7 8 5 6 7 8 A B C D E F ...
Page 82: ...82 VSX LX51 1 2 3 4 A B C D E F 1 2 3 4 9 4 POWER AMP SECTION S L K R I W Y X J N ...