Pioneer VSX-519V-K Service Manual page 27

5
QQ
3 7 63 1515 0
Step 3: Diagnosis
Each data lines confirmation checks it after standby OFF/ON.
CN1002 (Pin 6)
Is the voltage
0 to 3.3 V?
Yes
CN1002 (Pin 7)
Is the voltage
0 to 3.3 V?
Yes
CN1002 (Pin 8)
Is there
a data input?
(0 to 3.3 V)
Yes
CN1002 (Pin 9)
TE
L 13942296513
Is there
a data output?
(0 to 3.3 V)
Yes
CN1002 (Pin 3)
Is there
a data input?
(0 to 3.3 V)
Yes
CN1002 (Pin 4)
Is there
a data input?
(0 to 3.3 V)
Yes
CN1002 (Pin 5)
Is there
a data output?
(0 to 3.3 V)
www
Yes
.
5
http://www.xiaoyu163.com
6
CE
No
Diagnose the MAIN Assy.
SUB_PDN
No
Diagnose the MAIN Assy.
MAIN_IRQ
No
Diagnose the MAIN Assy.
SUB_IRQ
No
Check the parts and patterns in
the path IC1003.
CSCK_MAIN
No
Diagnose the MAIN Assy.
SCDO_MAIN
No
Diagnose the MAIN Assy.
SCDI_MAIN
No
Check the parts and patterns in
the path IC1003.
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6
http://www.xiaoyu163.com
7
2 9
8
IC1001 (Pin 21)
Is the voltage
0 to 3.3 V?
Yes
IC1002 (Pin 25)
Is there a data
0 to 3.3 V?
Yes
To Step 4
Step 4: X'TAL
Q Q
IC1003 (Pin 15)
3 6 7 1 3 1 5
Is there
a 12 MHz
output?
Yes
IC1003 (Pin 13)
Is there
a 12 MHz
output?
Yes
IC1001 (Pin 5)
Is there
a 27 MHz
output?
Yes
IC1001 (Pin 4)
Is there
a 27 MHz
co
output?
Yes
.
To Step 5
VSX-519V-K
7
8
9 4 2 8
HR_RST
No
Check the parts and patterns in
the path pin 87 of IC1003.
No
Check the parts and patterns in
the path pin 89 of IC1003.
0 5 8 2 9 9 4 2 8
No
Replace IC1003 or X1401.
No
Check the path to pin13 of IC1003.
Replace IC1003.
No
Replace IC1001 or X1001.
m
No
Check the path to pin4 of IC1001.
Replace IC1001.
8
9 9
A
B
C
9 9
D
E
F
27