Hdmi Troubleshooting - Pioneer VSX-AX4AVi-S Service Manual

1

HDMI Troubleshooting

A • It is assumed that there is no loose connection or damage in the
LCRs.
• There must not be an abnormality in pattern.
A
• The parts marked like
"HDMI &DVC Assy Check Points" on the Page 217.
Step 1: Connections
A B
,
CN1001, CN1002
B
Is soldering of
the connectors
OK?
Yes
To Step 2
Step 2: Power supply and clock
C
5V input
C1002 (+ side)
C
No
Is the voltage
5V?
Yes
D
C903 (+ side) 3.3V
No Check the soldering of IC901.
Is the voltage
3.3V?
D
Yes
E
1.8V
C906 (+ side)
No
Is the voltage
1.8V?
Yes
F
C909 (+ side) 3.3V
E
No
Is the voltage
3.3V?
Yes
G
C913 (+ side) 1.8V
No
Is the voltage
1.8V?
Yes
F
212
1
2
in the following chart are located in
No
Solder the connectors
correctly.
Check the INTERFACE Assy
and DC/DC Assy.
If soldering has not been done
correctly, replace IC901.
Check the soldering of IC902.
If soldering has not been done
correctly, replace IC902.
Check the soldering of IC903.
If soldering has not been done
correctly, replace IC903.
Check the soldering of IC904.
If soldering has not been done
correctly, replace IC904.
2
3
H
Q911 Emitter
Is the voltage
about 12V?
Yes
I
C918 (+ side)
Is the voltage
5V?
Yes
J
X501
Is oscillation
of 15.7 MHz
output?
Yes
To Step 3, 4
Step 3: HDMI
K
R118-R124
Is oscillation
of 27 MHz
output?
Yes
Step 3-1: Rx
L
IC101 (pins 39, 40,
43, 47, 48, 51, 52)
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
Yes
A
VSX-AX4AVi-S
3
4
UNReg input
No
Check the INTERFACE Assy
and DC/DC Assy.
5V
Check the soldering of IC911.
No
If soldering has not been done
correctly, replace IC911.
X'TAL
Check the soldering of X501 or
No
IC501. If soldering has not been
done correctly, replace X501 or
IC501.
X'TAL
Check the soldering of X101 or
No
IC101. If soldering has not been
done correctly, replace X101 or
IC101.
TMDS_RX1
Check the soldering of CN101.
No
If soldering has not been done
correctly, replace CN101.
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