26
VSX-519V-K
1
2
3
4
A
B
C
D
E
F
1
2
3
4
CN1002 (Pin 10)
Is the voltage
0 to 3.3 V?
No
SUB_ON
Diagnose the MAIN Assy.
Diagnose the MAIN Assy.
Diagnose the MAIN Assy.
Diagnose the MAIN Assy.
Yes
CN1002 (Pins 1, 2)
Is the voltage
3.3 V?
Is the voltage
3.3 V?
Is the voltage
3.3 V?
Is the voltage
5 V?
No
SUB MICOM 3.3V
Q1204 (collector)
No
SUB MICOM 3.3V
Yes
Yes
CN1001 (Pin 3)
No
HDMI_5V
Yes
CN1001 (Pins 1, 2)
No
HDMI_3.3V
Yes
Is Q1204
base voltage
2.6 V?
No
Yes
To Step 3
Is the voltage
3.3 V?
Is the voltage
1.8 V?
Is the voltage
3.3 V?
Is the voltage
1.2 V?
replace
IC1005
replace
IC1004
IC1005 (Pin 3)
No
HDMI 3.3V
Yes
IC1005 (Pin 2)
No
HDMI 1.8V
Yes
Check the parts and patterns in
the path.
Check the parts and patterns in
the path.
Is IC1005
abnormally
hot?
Is IC1004
abnormally
hot?
No
Yes
IC1004 (Pin 3)
No
HDMI 3.3V
HDMI 1.2V
Yes
The output and GND may be short-circuited.
Check the path between them.
Check the parts and
patterns in the path.
Replace Q1204,
IC1003, etc.
Check the parts and
patterns in the path
Q1405, Q1204, etc.
The output and GND may be short-circuited.
Check the path between them.
IC1004 (Pin 2)
No
Yes
No
Yes
Step 2: Power supply
replace Q1405
No
Yes
Is Q1405
collector voltage
0 V? (base is 3.3 V)
Summary of Contents for VSX-519V-K
Page 18: ...18 VSX 519V K 1 2 3 4 A B C D E F 1 2 3 4 4 3 VIDEO BLOCK DIAGRAM P C B SUB ASSY VIDEO 519 L ...
Page 19: ...19 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F 4 4 U COM BLOCK DIAGRAM P C B SUB ASSY FRONT C ...
Page 45: ...45 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 57: ...57 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F J CN401 M CP107 A FL FL FL SL SL SL C C C ...
Page 67: ...67 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F P 2 2 116 ...
Page 71: ...71 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F B A SIDE B B P C B SUB ASSY P T ...
Page 77: ...77 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F J 01 SIDE A SIDE B ...
Page 81: ...81 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F L SIDE A ...
Page 83: ...83 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F L SIDE B ...
Page 89: ...89 VSX 519V K 5 6 7 8 5 6 7 8 A B C D E F P N SIDE B ...