31
VSX-
8
21-K
5
6
7
8
5
6
7
8
A
B
C
D
E
F
Yes
N
o
Check the IC1318 and its peripheral
circuits of IC1319.
N
o
Check the IC1322 and its peripheral
circuits of IC1322.
OK
Check the CP1306.
N
o
Check the CPU Assy.
OK
Replace IC1318, IC1322.
OK
Replace IC1318, IC1322.
Replace IC1322.
OK
IC1318 (pin 10)
IC1318 (pin 16)
Yes
IC1318 (pin 14)
Yes
Yes
Yes
IC1318 (pin 15)
IC1322 (pin 4)
IC1322 (pin 7)
IC1322 (pin 9)
Is there a master clock
output?
Is the voltage of PD
N
IC1318
pin 31 3.3
V
?
Is there a LR clock
output?
Is there a DATA output?
Is there a master clock
output?
Yes
Yes
Yes
Is there a LR clock output?
Is there a bit clock output?
Is the voltage of IC1322
pin 1 0
V
?
Is there a bit clock output?
DIR_MCK (master clock)
DIR_LRCK (LR CLOCK)
DIR_SDTO (DATA)
DIR_BCK (bit clock)
DAI_MCK (MASTER CLOCK)
DAI_LRCK (LR CLOCK)
DAI_bck (bit CLOCK)
*IC1322 pin 1
0
V
: DIR
3.3
V
: HDMI
SWITCH
(0
V
↔
3.3
V
)
(0
V
↔
3.3
V
)
(0
V
↔
3.3
V
)
(0
V
↔
3.3
V
)
(0
V
↔
3.3
V
)
(0
V
↔
3.3
V
)
(0
V
↔
3.3
V
)
Check the IC1318 and its peripheral
circuits of IC1319.
N
o
Check the path between IC1322 pin 1
and CPU Assy.
N
o
Replace IC1318.
OK
Check the IC1318 and its peripheral
circuits of IC1319.
Check the IC1322 and its peripheral
circuits of IC1322.
N
o
N
o
N
o
N
o
OK
To Step 7
Summary of Contents for VSX-521-K
Page 13: ...13 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 17: ...17 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F D MAIN ASSY C AMP ASSY D MAIN ASSY E SUBWOOFER ASSY ...
Page 21: ...21 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 22: ...22 VSX 821 K 1 2 3 4 A B C D E F 1 2 3 4 4 5 D MAIN BLOCK DIAGRAM for VSX 921 K T D MAIN ASSY ...
Page 23: ...23 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F ...
Page 27: ...27 VSX 821 K 5 6 7 8 5 6 7 8 A B C D E F only P CPU ASSY Not used ...
