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VSX-84TXSi
Check the parts and patterns in
the path(Q701 to CN1002).
Check the peripheries of IC751.
No
Replace IC 751.
Yes
Diagnose the INTERFACE or
COMPONENT&VOL ASSY
Check the IC701.
No
Replace IC701.
*Only 480i,576i,480p input
*Only 480i,576i,480p input
IC701(Pin 37)
DAC F
L2
Is there a
Pr signal?
No
Yes
CN1002(Pin 2)
Pr OUT
A2
Is there a
Pr signal?
No
No
Check the L1303.
No
Replace L1303.
Yes
O2
Is the voltage
3.3V?
No
Check the L1301.
No
Replace L1301.
Yes
1.8V (Scaler)
O3
Is the voltage
1.8V?
No
Check the L1304.
No
Replace L1304.
Yes
1.8V (Scaler)
O4
Is the voltage
1.8V?
No
Check the L1305.
No
Replace L1305.
Yes
1.8V (Scaler)
O5
Is the voltage
1.8V?
No
Check the L1351.
No
Replace L1351.
Check the X1301.
No
Replace X1301 or IC1301.
Yes
3.3V (SDRAM)
O6
Is the voltage
3.3V?
No
Step 5-2: X'tal, Reset
X1301
X'tal
P1
No
Yes
Yes
IC1301(Pin 47)
XVCRST
P2
Is the voltage
"H"(3.3V)?
No
Check the parts and patterns in
the path(IC501 to IC1301).
No
Replace IC501.
Yes
IC1301(Pin 46)
VCSDA
P2
No
Check the parts and patterns in
the path(IC501 to IC1301).
No
Replace IC501 or IC1301.
Yes
IC1301(Pin 45)
VCSCL
P2
No
Check the parts and patterns in
the path(IC501 to IC1301).
No
Replace IC501 or IC1301.
Yes
H
Scaler section
Is oscillation
of 13.5 MHz
output?
Does
a clock output in
constant period
(0 to 3.3 V)
?
Does
a signal output in
constant period
(0 to 3.3 V)
?
Check the parts and patterns in
the path(Q701 to CN1002).
Check the peripheries of IC751.
No
Replace IC 751.
Yes
Diagnose the INTERFACE or
COMPONENT&VOL ASSY
Check the IC701.
No
Replace IC701.
*Only 480i,576i,480p input
IC701(Pin 38)
DAC E
L2
Is there a
Pb signal?
No
Yes
*Only 480i/576i,480p input
CN1002(Pin 4)
Pb OUT
A2
Is there a
Pb signal?
No
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