Pioneer VSX-1019AH-K Service Manual page 37

5
QQ
3 7 63 1515 0
Step 2: X'tal
IC803 (Pins 5, 7) (side B)
Is there
a 27 MHz
output?
Yes
IC1302 (Pin 7)
Is there
a 36.864 MHz
output?
E
Yes
X1501 (Pins 1, 3)
Is there a
27 MHz input or
output?
F
Yes
IC1702 (Pin 7) (side B)
Is there
a 28.63636 MHz
output?
TE
L 13942296513
Yes
To Step 3
Step 3: RESET
R931 (side B)
Is the
voltage "H"
(around 3.3 V)
?
Yes
IC1300 (Pin 91)
Is the
voltage "H"
(around 3.3 V)
?
Yes
R1509
Is the
voltage "H"
(around 3.3 V)
?
F
Yes
www
R1851 (side B)
Is the
.
voltage "H"
(around 3.3 V)
?
IC1800
Yes
5
http://www.xiaoyu163.com
6
CLK27EMMA CLK27AB1
No
Check IC803 and its peripheral
circuits.
No
Check IC1302 and its peripheral
circuits.
No
Check X1501 and IC1501
and its peripheral circuits.
No
Check IC1702 and its peripheral
circuits.
XEMRST
No
Check the soldering and parts of
the path.
XGARST
No
Check the soldering and parts of
the path.
No
Check the soldering and parts of
the path.
XVSRST
x ao u163
y
i
No
Check the soldering and parts of
the path.
6
http://www.xiaoyu163.com
7
2 9
8
R9018
Is the
voltage "H"
(around 3.3 V)
?
H
Yes
To Step 4
Step 4: HDMI
Step 4-1: IN 1,2,3/INBD 1,2 HDMI OUT
JA1602-JA1604 (Pin 18)
Is the voltage
around 5 V ?
G
Yes
JA1602-JA1604 (Pin 19)
Is the voltage
Q Q
around 5 V ?
3 6 7 1 3 1 5
G
Yes
JA1602-JA1604 (Pins 15,16)
Does
a signal output in
constant period
?
G
Yes
JA1602-JA1604
(Pins 1,3,4,6,7,9,10,12)
Is there
0.5Vp-p in CLK
and DATA?
G
Yes
A
co
.
VSX-1019AH-K
7
8
9 4 2 8
XHDTX1RST
No
Check the soldering and parts of
the path.
+5V
No
Check the source equipment
connected in JA1602-JA1604.
Hot plug detect
No
Check IC1501 and its peripheral
circuits.
0 5 8 2 9 9 4 2 8
DDC (SDA/SCL)
No
Check the soldering of JA1602-
JA1604.
NG
Replace the JA1602.
TMDS signal
No
Check the soldering of JA1602-
JA1604.
NG
Replace the JA1602.
Check the source equipment.
m
8
9 9
A
B
C
9 9
D
E
F
37