Pioneer VSX-1018AH-K Service Manual page 43

5
HDMI section
Step 3-1: Power supply, CLK
5 V(HDMI OUT)
C1056
V+5HD
Check the soldering of IC1051 and
No
Is the voltage
the peripheries of IC1051.
5 V?
If soldering has not been done
correctly, replace IC1051.
Yes
5 V(BD IN)
IC1254 (Pin 16)
D1
No
Is the voltage
4.4 V?
Yes
5V(HDMI IN1)
IC1252 (Pin 16)
D2
No
Is the voltage
4.4 V?
Yes
5V(HDMI IN2)
IC1204 (Pin 16)
D3
No
Is the voltage
4.4 V?
Yes
3.3 V(Cable EQ 2)
IC1151 (Pin 48)
E
Is the voltage
3.3 V?
(BD or HDMI1
is selected)
Yes
X'TAL(HDMI Rx)
X101
F
No
Is oscillation
of 27 MHz?
Yes
5
6
Check the D1152.
No
Replace D1152.
Check the D1151.
No
Replace D1151.
Check the D1102.
No
Replace D1102.
No
Check the L1151,Q1153
and the peripheries.
No
Replace L1151,Q1153
or the peripheries.
Check the soldering of
IC101. Check the
peripheries of X101.
No
Replace.
VSX-LX51
6
7
Step 3-2 : Reset
RXRST
IC501 (Pin 22)
C
No
Is the voltage
"H" (3.3 V)?
Yes
TXRST
IC501 (Pin 25)
C
No
Is the voltage
"H" (3.3 V)?
Yes
Step 3-3: Source 5V
* When connected the source
equipment to BD IN.
V+5R3
IC151 (Pin 9)
G1
No
Is the voltage
5 V?
Yes
* When connected the source
equipment to IN1.
V+5R2
IC151 (Pin 12)
G1
No
Is the voltage
5 V?
Yes
* When connected the source
equipment to IN2.
V+5R1
IC151 (Pin 5)
G1
No
Is the voltage
5 V?
Yes
* When connected the source
equipment to BD IN/IN1.
R1PWR5V
R109
G2
No
Is the voltage
"H" (3.3 V)?
Yes
A
7
8
Check the parts and
patterns in the path.
No
Replace IC501 or IC502.
Check the parts and
patterns in the path.
No
Replace IC501 or IC502.
Check the JA1152.
No
Replace JA1152.
Check the JA1151.
No
Replace JA1151.
Check the JA1102.
No
Replace JA1102.
Check the parts and
patterns in the path.
No
Replace IC151, Q152 or R156.
43
8
A
B
C
D
E
F