32
VSX-1020-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
Step 2: X'tal
Step 4: HDMI IN, HDMI OUT
To Step 3
Yes
IC803 (Pins 5, 7) (side B)
IC1302 (Pin 7)
N
o
Is there
a 27 MHz
output?
N
o
Is there
a 36.864 MHz
output?
Yes
E
To Step 4
CLK27EMMA, CLK27ABT
XHDTX1RST
F
JA1601-JA1604 (Pin 18)
Step 4-1: HDMI IN 1, 2, 3, 4
Is the voltage
around 5
V
?
N
o
Yes
+5
V
Check the soldering of JA1601-
JA1604 and the source equipment
connected in JA1601-JA1604.
JA1601-JA1604 (Pin 19)
Is the voltage
around 5
V
?
N
o
Yes
Hot plug detect
Check IC1501 and its peripheral
circuits.
Check IC803 and its peripheral
circuits.
Step 3: RESET
Yes
R931 (side B)
N
o
Is the
voltage "H"
(around 3.3 V)
?
XEMRST
Check the soldering and parts of
the path.
Yes
R1851 (side B)
N
o
Is the
voltage "H"
(around 3.3 V)
?
X
V
SRST
Check the soldering and parts of
the path.
Yes
IC1300 (Pin 91)
N
o
Is the
voltage "H"
(around 3.3 V)
?
XGARST
Check the soldering and parts of
the path.
Yes
R1509
N
o
Is the
voltage "H"
(around 3.3 V)
?
Check the soldering and parts of
the path.
G
H
Yes
R9018
N
o
Is the
voltage "H"
(around 3.3 V)
?
Check the soldering and parts of
the path.
Check IC1302 and its peripheral
circuits.
X1501 (Pins 1, 3)
N
o
Is there a
27 MHz input or
output?
Yes
F
Q
JA1601-JA1604 (Pins 15,16)
Does
a signal output in
constant period
?
N
o
Yes
DDC (SDA/SCL)
Check the soldering of JA1601-
JA1604.
JA1601-JA1604
(Pins 1,3,4,6,7,9,10,12)
Is there
0.5
V
p-p in CLK
and DATA?
N
o
Yes
TMDS signal
Check the soldering of JA1601-
JA1604.
Check X1501 and IC1501
and its peripheral circuits.
X1701 (Pins 1, 3)
N
o
Is there
a 28.63636 MHz
output?
Yes
Check X1701 and IC1701
and its peripheral circuits.
R1270
N
o
Is there
a 48 MHz
signal?
Yes
Check IC1251 and its peripheral
circuits.
A
Summary of Contents for VSX-1020-K
Page 7: ...7 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F 2 2 PANEL FACILITIES Front panel ...
Page 8: ...8 VSX 1020 K 1 2 3 4 A B C D E F 1 2 3 4 Display ...
Page 9: ...9 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F Remote control ...
Page 10: ...10 VSX 1020 K 1 2 3 4 A B C D E F 1 2 3 4 Rear panel ...
Page 16: ...16 VSX 1020 K 1 2 3 4 A B C D E F 1 2 3 4 4 2 DIGITAL AUDIO BLOCK DIAGRAM N D MAIN ASSY ...
Page 17: ...17 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 19: ...19 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F 4 4 DIGITAL VIDEO BLOCK DIAGRAM N D MAIN ASSY ...
Page 21: ...21 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F C COMPOSITE ASSY E F VIDEO ASSY ...
Page 24: ...24 VSX 1020 K 1 2 3 4 A B C D E F 1 2 3 4 ...
Page 67: ...67 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F G K CP3002 2 259 N 5 12 CN1601 ...
Page 112: ...112 VSX 1020 K 1 2 3 4 A B C D E F 1 2 3 4 J J AMP ASSY SIDE B CP11 CP10 ...
Page 113: ...113 VSX 1020 K 5 6 7 8 5 6 7 8 A B C D E F J SIDE B CN5001 CP11 ...
