Pioneer VSX-LX70 Service Manual page 58

1
H
A
HS
IC1301(Pin 1)
No
Is there a
HSYNC?
Yes
VS
IC1301(Pin 2)
B
No
Is there a
VSYNC?
Yes
Step 5-4: OUTPUT
VCCK
IC1301(Pin 125)
C
No
Is there a
CLK?
Yes
D16-23
IC1301(Pins 148-155)
No
Is there a
DATA?
D
Yes
TD28-35
IC1301(Pins 130-137)
No
Is there a
DATA?
Yes
HSYNC
IC1301(Pin 118)
E
No
Is there a
HSYNC?
Yes
F
58
1
2
P2
Check the parts and patterns in
the path (IC401 - IC1301).
No
Replace IC401.
P2
Check the parts and patterns in
the path (IC401 - IC1301).
No
Replace IC401.
P2
Check IC1301,IC1351.
No
Replace IC1301 or IC1351.
P2
Check IC1301,IC1351.
No
Replace IC1301 or IC1351.
P2
Check IC1301,IC1351.
No
Replace IC1301 or IC1351.
P2
Check IC1301,IC1351.
No
Replace IC1301 or IC1351.
2
3
IC1301(Pin 119)
Is there a
VSYNC?
Yes
Diagnose the HDMI Tx(IC301).
VSX-LX70
3
4
VSYNC
P2
No
Check IC1301,IC1351.
No
Replace IC1301 or IC1351.
4