Pioneer VSX-84TXSi Service Manual page 261

5
Step 4: DVC
a
R416-R417 (common line) X'TAL
Is
Check the soldering of X401 or
No
oscillation of
IC401. If soldering has not been
28.63636MHz
done correctly, replace X401 or
output?
IC401.
Yes
Step 4-1
Step 4-1-1
B
COMPOSITE IN
CN1002 (pin 24)
No
Check the INTERFACE Assy
Is there a
signal
and COMPOSITE V Assy.
?
Yes
b
IC601 (pin 3)
Check the soldering of IC602.
No
Is there a
If soldering has not been done
signal
correctly, replace IC602.
?
Yes
b
IC601 (pin 16)
AUDIO (DVD)
Check the soldering of IC601.
No
Is there a
If soldering has not been done
signal
correctly, replace IC601.
?
Yes
To Step 4-2
5
6
Step 4-1-2
B
CN1002 (pin 20)
Is there a
signal
b
IC601 (pin 3)
Is there a
signal
B
CN1002 (pin 18)
Is there a
signal
b
IC601 (pins 15, 16)
Is there a
signal
To Step 4-2
Step 4-1-3
B
CN1002 (pins 8, 10, 12)
Is there a
signal
b
IC601 (pins 14-16)
Is there a
signal
To Step 4-2
VSX-74TXVi
6
7
S VIDEO IN
No
Check the INTERFACE Assy
and S VIDEO Assy.
?
Yes
Check the soldering of IC602.
No
If soldering has not been done
correctly, replace IC602.
?
Yes
No
Check the INTERFACE Assy
and S VIDEO Assy.
?
Yes
Check the soldering of IC601.
No
If soldering has not been done
correctly, replace IC601.
?
Yes
If you can perform the steps described in
"Diagnosis of the line from the component
video input to the HDMI video output,"
follow this flowchart.
COMPONENT IN
No
Check the INTERFACE Assy
and COMPONENT & VOL Assy.
?
Yes
Check the soldering of IC601.
No
If soldering has not been done
correctly, replace IC601.
?
7
8
A
B
C
D
E
F
215
8