Pioneer VSX-1017AV-K Service Manual page 46

1
HDMI Troubleshooting
V+5
• The parts marked like
in "HDMI &DVC Assy Check Points".
A
Common section
Step 1-1: Connections
CN1001, CN1002
Are BtoB
connectors inserted
securely?
B
Yes
CN1003
Is FFC
cable inserted
securely?
Yes
Step 1-2: Power supply
C1002+
C
No
Is the voltage
5 V?
Yes
C903+
V+3R3
No Check the IC901.
Is the voltage
D 3.3 V?
Yes
To Step 2-1: HDMI section
To Step 3-1: Video converter section
E
F
46
1
2
in the following chart are located
A a
No
Insert it securely.
B
No
Insert it securely.
5 V
V+5
Diagnose between the AUDIO IN
Assy and DC/DC assy.
3.3 V
If IC901 is failure, replace IC901.
2
3
HDMI section
Step 2-1: CE
CN1001 (Pin 5)
Is the voltage
"H" (5 V)?
Yes
Step 2-2: Power supply
CN1003 (Pin 1)
Is the voltage
7 V?
Yes
IC911 (Pin 5)
Is the voltage
5 V?
Yes
L1001
Is the voltage
5 V?
Yes
L101
Is the voltage
3.3 V?
Yes
Step 2-3: SEL
CN1001 (Pin 4)
Is the
voltage "H"(5V)
when selecting IN1?
And is the voltage "L"
when selecting
IN2?
Yes
A
VSX-1017AV-K
3
4
CE
A
No
Diagnose between the
BRIDGE 1-L Assy and MAIN Assy.
7 V
V+7
No
Diagnose between the AUDIO IN
Assy and DC/DC assy.
5 V
V+5HD
No
Check the IC911.
If IC911 is failure, replace IC911.
5 V
V+5D
No
Check the L1001.
If L1001 is failure, replace L1001.
3.3 V (IC101)
3.3V_EQ
No
Check the L101 and Q101.
If L101 or Q101 is failure,
replace L101 or Q101.
SEL
A
Diagnose between the
No
BRIDGE 1-L Assy and MAIN Assy.
4