Hdmi Troubleshooting - Pioneer VSX-84TXSi Service Manual

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QQ
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HDMI Troubleshooting

A
• The parts marked like
in "HDMI & 1394 Assy Check Points".
Common section
Step 1: Connections
CN1001, CN1002 CN1001, CN1002
Is soldering of
the connectors
OK?
B
Yes
Step 2-1: Power supply, CLK
CN1001(Pin 4)
Is the voltage
5 V?
Yes
C
R1028
Is the voltage
1.8 V?
TE
L 13942296513
Yes
IC1001(OUT)
Is the voltage
D
2.5 V?
Yes
IC1002(OUT)
Is the voltage
3.3 V?
Yes
E IC1003(OUT)
Is the voltage
3.3 V?
Yes
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V+5
in the following chart are located
A1
A2
No
Solder the connectors
correctly.
5 V INPUT
V+5IN
No
Check the INTERFACE Assy
or DC/DC Assy.
1.8 V
V+1R8
No
Check the soldering of IC1004 and
the peripheries of IC1004.
If soldering has not been done
correctly, replace IC1004.
2.5 V
V+2R5
No
Check the soldering of IC1001.
If soldering has not been done
correctly, replace IC1001.
3.3 V
V+3R3_1
No
Check the soldering of IC1002.
If soldering has not been done
correctly, replace IC1002.
3.3 V
V+3R3_2
No
Check the soldering of IC1003.
If soldering has not been done
correctly, replace IC1003.
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8
CN1001(Pin 1)
Is the voltage
12 V?
Yes
IC1051(Pin 3)
Is the voltage
5 V?
Yes
X501
Is oscillation
of 15.7 MHz
output?
Yes
Step 2-2: Reset
CN1001(Pin 23)
Q Q
3 6 7
IIs the voltage
"H" (3.3 V)?
Yes
HDMI (HDMI input)
diagnosis : To Step 3-1
Video converter (Analog input)
diagnosis : To Step 4-1
u163
VSX-84TXSi
3
4
2 9 9 4
UNReg INPUT
V+5UN
No
Check the INTERFACE Assy
or DC/DC Assy.
5 V
V+5HD
No
Check the soldering of IC1051.
If soldering has not been done
correctly, replace IC1051.
X'TAL (microcomputer)
B1
No
Check the soldering of X501 or
IC501. If soldering has not been
done correctly, replace X501 or
IC501.
HDRST
B2
1 3 1 5 0 5 8 2 9
No
Check the parts and patterns in
the path.
Check the INTERFACE Assy
or DIGITAL MOTHER Assy.
Scaler diagnosis :
To Step 5-1
Scaler diagnosis :
To Step 5-1
m
co
.
4
2 8
9 9
9 4 2 8 9 9