Pioneer Elite VSX-81TXV, Service Manual

Page: 217 / 272

VSX-2016AV-S
217
5 6 7 8
5 6
7
8
C
D
F
A
B
E
• The parts marked like in the following chart are located
in "HDMI &DVC Assy Check Points".
Step 1-1: Connections
Step 1-2: Power supply
CN1001, CN1002
Are BtoB
connectors inserted
securely?
Insert it securely.
No
Yes
To Step 2-1: HDMI section
To Step 3-1: Video converter section
V+5
IC901 (Pin 3)
Is the voltage
5 V?
No
5 V
3.3 V
Check the DSP Assy or AUDIO IN
Assy or DC/DC Assy.
Yes
Is the voltage
3.3 V?
No
Check the patterns in the path and
IC901.
If IC901 is failure, replace IC901.
Yes
Check the X501 and IC501.
If X501 or IC501 is failure,
replace X501 or IC501.
IC501 (Pin 13) XOUT
X'TAL
HDMI section
Common section
Is there
a 15.7 MHz
output?
No
Yes
HDMI Troubleshooting
A
V+5
Step 2-1: Power supply
CN1001 (Pin 26)
Is the voltage
7 V?
No
7 V
Check the DSP Assy or AUDIO IN
Assy or DC/DC Assy.
Yes
V+7D
IC911 (Pin 5)
Is the voltage
5 V?
No
5 V (HDMI OUT)
Check the IC911.
If IC911 is failure, replace IC911.
Yes
V+5
Step 1-3: Reset
CN1001 (Pin 2)
Is the voltage
"H" (3.3 V)?
No
HDRST
Check the parts and patterns in
the path.
Check the DSP Assy or AUDIO IN
Assy or MAIN CONTROL Assy.
Yes
O
U
V+3R3UC
3.3 V (HDMI UCOM)
Is the voltage
3.3 V?
No
Check the patterns in the path and
L501.
If L501 is failure, replace L501.
Yes
V+3R3UC
V+3R3
V+5HD
V+5D
Is the voltage
5 V?
No
5 V
Check the R1002.
If R1002 is failure, replace R1002.
Yes
V+5D
V+5E0
Is the voltage
4.4 V?
No
5 V (HDMI IN1)
Check the D151.
If D151 is failure, replace D151.
Yes
V+5E0
V+5E1
Is the voltage
4.4 V?
No
5 V (HDMI IN2)
Check the D171.
If D171 is failure, replace D171.
Yes
V+5E1
V+3RX
Is the voltage
3.3 V?
No
3.3 V (HDMI Rx)
Check the L103.
If L103 is failure, replace L103.
Yes
V+3RX
V+3RA
Is the voltage
3.3 V?
No
3.3 V (HDMI RA)
Check the L104.
If L104 is failure, replace L104.
Yes
V+3RA