Pioneer VSX-1018AH-K Service Manual page 52

1
A
HDMI section
Step 3-1: Power supply, CLK
5 V(HDMI OUT)
IC1051 (Pin 3)
No
Is the voltage
5 V?
Yes
B
5 V(BD IN)
IC1252 (Pin 16)
No
Is the voltage
4.4 V?
Yes
5V(HDMI IN)
IC1204 (Pin 16)
No
Is the voltage
C
4.4 V?
Yes
X'TAL(HDMI Rx)
X101
No
Is oscillation
of 27 MHz?
Yes
D
Step 3-2 : Reset
RXRST
IC501 (Pin 22)
No
Is the voltage
"H" (3.3 V)?
Yes
TXRST
IC501 (Pin 25)
E
No
Is the voltage
"H" (3.3 V)?
Yes
F
52
1
2
V+5HD
Check the soldering of IC1051 and
the peripheries of IC1051.
If soldering has not been done
correctly, replace IC1051.
D1
Check the D1151.
No
Replace D1151.
D2
Check the D1102.
No
Replace D1102.
F
Check the soldering of
IC101. Check the
peripheries of X101.
No
Replace.
C
Check the parts and
patterns in the path.
No
Replace IC501 or IC502.
C
Check the parts and
patterns in the path.
No
Replace IC501 or IC502.
2
3
Step 3-3: Source 5V
R1151
Is the voltage
5 V?
Yes
R1104
Is the voltage
5 V?
Yes
R109
Is the voltage
"H" (3.3 V)?
Yes
R111
Is the voltage
"H" (3.3 V)?
Yes
Step 3-4: Hot Plug Detect
IC501 (Pin 34)
Is the voltage
"L" (0 V)?
Yes
A
VSX-LX51
3
4
* When connected the source
equipment to BD IN.
V+5R2
G1
No
Check the JA1152.
No
Replace JA1152.
* When connected the source
equipment to HDMI IN.
V+5R1
G2
No
Check the JA1151.
No
Replace JA1151.
* When connected the source
equipment to BD IN.
R1PWR5V
G3
No
Check the parts and
patterns in the path.
No
Replace Q103 or Q104.
* When connected the source
equipment to HDMI IN.
R0PWR5V
G4
No Check the parts and
patterns in the path.
No
Replace Q101 or Q102.
* When connected the source
equipment to BD IN.
HPDET3
C
No
Check the patterns in the path.
No
Replace IC501.
4