42
VSX-LX52
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Step 9: S IN, S OUT
To Step 10
Perform the same check items up to
those for IC1805 and IC1806 of Step 6.
R1203
Are there
signals?
No
NG
Yes
A_VSYOUT_EM
R1209
A_VSCOUT_EM
Diagnose the IC800 (through hole) of Composite/S/
Component OUT and later.
Replace the DIGITAL MAIN Assy.
S
Q
Q
Q
Q
Note: When the connection is Composite OUT and Component OUT,
refer to the diagnose of IC800 and later in steps 8 and 10.
Note: When the connection is S Component OUT,
refer to the diagnose of IC800 and later in steps 8 and 9.
CN1252 (Pin 1)
Are there
signals?
No
Yes
A_VSYOUT
CN1252 (Pin 3)
A_VSCOUT
Check the soldering and
connection of the CN1252.
P
Is there a
signal?
No
Yes
CN1254 (Pin 11)
Diagnose the COMPONENT Assy.
A_VCYOUT
Check the soldering and
connection of the CN1254.
Check Q1202 and its peripheral circuits.
Q1200 Emitter
Q1201 Emitter
Are there
signals?
No
Yes
Check Q1200, Q1201 and
its peripheral parts.
Is there a
signal?
No
Yes
Replace Q1202 and its peripheral
parts.
IC800 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
Are there
signals?
No
Yes
VDI0-7, VICLK
Check IC1805, IC1806 and its
peripheral circuits.
IC800 (through hole)
(Pins E13,D13,E12,D12,E11,
D11,E10,D10,D15) (side B)
Are there
signals?
No
Yes
VDI0-7, VICLK
Check IC1805, IC1806 and its
peripheral circuits.
Check IC800 and its peripheral
circuits.
Step 10: COMPOSITE IN, COMPOSITE OUT
(at DVC ON)
Step 11: GUI/JPEG (USB)
Composite/S/Component OUT
Go to .
C
Step 12: GUI/JPEG (USB)
HDMI OUT
Perform the same check items up to
those for IC1805 and IC1806 of Step 7.
Is there a
signal?
No
Yes
R1214
Replace the DIGITAL MAIN Assy.
A_VCYOUT_EM
A_VCYOUT
Check IC800 and its peripheral
circuits.
NG