Pioneer VSX-1019AH-K Service Manual page 38

1
QQ
3 7 63 1515 0
A
A
IC1807,IC1808(side B),IC1809,
IC1810(side B),IC1811(side B)
(Pins 11-17)
No
Are signals
output?
Whole
Yes
B
diagram
IC1800, IC9000
Check the soldering of IC1800,
IC9000 and its periphery circuit.
JA9000
(Pins 1,3,4,6,7,9,10,12)
C
Is there
No
0.5Vp-p in CLK
and DATA?
H
Yes
TE
L 13942296513
JA9000 (Pin 18)
D
No
Is the voltage
around 5 V ?
H
Yes
JA9000 (Pin 19)
No
Is the voltage
around 5 V ?
E
H
Yes
To Step 4-2
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F
38
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2
A
P** HSYNC VSYNC
PDE, PDCLK
Check IC1807-IC1811 and its
peripheral circuits.
B
IC1800
& H
TMDS signal
Check the power and soldering of
IC1501,IC1800 and IC9000,
and its peripheral circuits.
NG
Replace the IC1501, IC1800
and IC9000.
NG
Replace the DIGITAL MAIN
Assy.
+5V
Check IC9001 and its peripheral
circuits.
Hot plug detect
Check the sync equipment.
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y
. i
VSX-1019AH-K
2
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3
8
Step 4-2: IN BD
JA1601 (Pin 18)
Is the voltage
around 5 V ?
G
Yes
JA1601 (Pin 19)
Is the voltage
around 5 V ?
G
Yes
JA1601 (Pins 15,16)
Does
a signal output in
constant period
?
G
Yes
Q Q IC1601
3 6 7 1 3
(Pins 1,3,4,6,7,9,10,12)
Is there
0.5Vp-p in CLK
and DATA?
G
Yes
IC1601 (Pins 25,26,
28,29,31,32,34,35)
Is there
0.5Vp-p in CLK
and DATA?
K
Yes
To Step 5
u163
.
3
4
2 9 9 4 2 8
+5V
No
Check the source equipment
connected in JA1601.
Hot plug detect
No Check IC1501 and its peripheral
circuits.
DDC (SDA/SCL)
No
Check the soldering of JA1601
and the path.
1 5 0 5 8 2 9 9 4
TMDS signal
No
Check the soldering of JA1601
and the path.
NG
Replace the JA1601.
Check the source equipment.
TMDS signal
No
Check IC1601 and its peripheral
circuits.
A
m
co
4
9 9
2 8 9 9