Pioneer VSX-821-K Service Manual page 31

5
IC1318 (pin 10)
DIR_MCK (master clock)
No
Is there a master clock
output?
(0 V ↔ 3.3 V)
Yes
IC1318 (pin 16)
DIR_LRCK (LR CLOCK)
No
Is there a LR clock
output?
(0 V ↔ 3.3 V)
Yes
IC1318 (pin 14)
DIR_SDTO (DATA)
No
Is there a DATA output?
(0 V ↔ 3.3 V)
Yes
IC1318 (pin 15)
DIR_BCK (bit clock)
No
Is there a bit clock output?
(0 V ↔ 3.3 V)
Yes
SWITCH
IC1322 (pin 4)
DAI_MCK (MASTER CLOCK)
No
Is there a master clock
output?
(0 V ↔ 3.3 V)
Yes
IC1322 (pin 7)
DAI_LRCK (LR CLOCK)
No
Is there a LR clock output?
(0 V ↔ 3.3 V)
Yes
IC1322 (pin 9)
DAI_bck (bit CLOCK)
No
Is there a bit clock output?
(0 V ↔ 3.3 V)
Yes
To Step 7
5
6
No
Is the voltage of PDN IC1318
pin 31 3.3V?
Check the IC1318 and its peripheral
circuits of IC1319.
Check the IC1318 and its peripheral
circuits of IC1319.
Check the IC1318 and its peripheral
circuits of IC1319.
Is the voltage of IC1322
pin 1 0 V?
Yes
Replace IC1322.
VSX-821-K
6
7
OK
Check the CP1306. Check the CPU Assy.
OK
Check the IC1322 and its peripheral
circuits of IC1322.
OK
Replace IC1318.
OK
Check the IC1322 and its peripheral
circuits of IC1322.
No
Check the path between IC1322 pin 1
and CPU Assy.
*IC1322 pin 1
0 V: DIR
3.3 V: HDMI
7
8
A
OK
Replace IC1318, IC1322.
B
C
OK
Replace IC1318, IC1322.
D
E
F
31
8