38
VSX-LX52
1
2
3
4
A
B
C
D
E
F
1
2
3
4
To Step 4-2
JA9000 (Pin 18)
Is the voltage
around 5 V ?
No
Yes
+5V
Check IC9001 and its peripheral
circuits.
JA9000 (Pin 19)
Is the voltage
around 5 V ?
No
Yes
Hot plug detect
Check the sync equipment.
IC1800
IC9000
JA9000 (OUT 1)
(Pins 1,3,4,6,7,9,10,12)
Is there
0.5Vp-p in CLK
and DATA?
No
Yes
TMDS signal
Video Scaler IC
HDMI Tx IC
Check the soldering of JA9000
and its peripheral.
Check the soldering of IC9000.
NG
Check IC1501 and its
peripheral circuits.
Check the power and soldering of
IC1501,IC1800 and IC9000,
and its peripheral circuits.
J
K
Step 4-2: IN BD
To Step 4-3
JA1601 (Pin 18)
Is the voltage
around 5 V ?
No
Yes
+5V
Check the soldering of JA1601.
Check the source equipment
connected in JA1601.
IC1501
Is the voltage
around 5 V ?
No
HDMI Rx IC
Check IC1601 and its peripheral
circuits.
JA1601 (Pins 15,16)
Does
a signal output in
constant period
?
No
Yes
Yes
DDC (SDA/SCL)
JA1601 (Pin 19)
Hot plug detect
Check the soldering of JA1601
and the path.
IC1601 (Pins 25,26,
28,29,31,32,34,35)
Is there
0.5Vp-p in CLK
and DATA?
No
Yes
TMDS signal
IC1601
(Pins 1,3,4,6,7,9,10,12)
TMDS signal
Check IC1601 and its peripheral
circuits.
Is there
0.5Vp-p in CLK
and DATA?
No
Yes
Check the soldering of JA1601
and the path.
N
B
A
A
A
IC1807,IC1808(side B),IC1809,
IC1810(side B),IC1811(side B)
(Pins 11-17)
Are signals
output?
No
Yes
P** HSYNC VSYNC
PDE, PDCLK
Check IC1807-IC1811 and its
peripheral circuits.
Whole
diagram
M1
L1
JA9001 (Pin 18)
Is the voltage
around 5 V ?
No
Yes
+5V
Check IC9001 and its peripheral
circuits.
JA9001 (Pin 19)
Is the voltage
around 5 V ?
No
Yes
Hot plug detect
Check the sync equipment.
IC9001
JA9001 (OUT 2)
(Pins 1,3,4,6,7,9,10,12)
Is there
0.5Vp-p in CLK
and DATA?
No
Yes
TMDS signal
HDMI Tx IC
M2
L2
HDMI OUT