Pioneer VSX-1018AH-K Service Manual page 47

5
DAC B
IC601 (Pin 33)
K
No
Is there a
Y signal?
Yes
SY OUT
Q641 (E)
L2
No
Is there a
Y signal?
Yes
Diagnose the MAIN Assy.
DAC C
IC601(Pin 29)
K
No
Is there a
C signal?
Yes
SC OUT
Q651 (E)
L3
No
Is there a
C signal?
Yes
Diagnose the MAIN Assy.
DAC D
IC601 (Pin 28)
K
No
Is there a
Y signal?
Yes
Y OUT
Q661 (E)
L4
No
Is there a
Y signal?
Yes
Diagnose the MAIN Assy.
5
6
Check the IC601.
No
Replace IC601.
Check the parts and patterns in
the path(IC601 - CN1002).
No
Replace L641, Q641 or the
peripheries of L641 or Q641.
Check the IC601.
No
Replace IC601.
Check the parts and patterns in
the path(IC601 - CN1002).
No
Replace L651, Q651 or the
peripheries of L651 or Q651.
Check the IC601.
No
Replace IC601.
Check the parts and patterns in
the path(IC601 - CN1002).
No
Replace L661,Q661 or the
peripheries of L661 or
Q661.
VSX-LX51
6
7
DAC E
IC601 (Pin 25)
K
No
Is there a
Pb signal?
Yes
Pb OUT
Q671 (E)
L5
No
Is there a
Pb signal?
Yes
Diagnose the MAIN Assy.
DAC F
IC601 (Pin 24)
K
No
Is there a
Pr signal?
Yes
Pr OUT
Q681 (E)
L6
No
Is there a
Pr signal?
Yes
Diagnose the MAIN Assy.
7
8
Check the IC601.
No
Replace IC601.
Check the parts and patterns in
the path(IC601 - CN1002).
No
Replace L671,Q671 or the
peripheries of L671 or Q671.
Check the IC601.
No
Replace IC601.
Check the parts and patterns in
the path(IC601 - CN1002).
No
Replace L681,Q681 or the
peripheries of L681 or Q681.
47
8
A
B
C
D
E
F