Pioneer VSX-519V-K Service Manual page 27

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