Pioneer VSX-519V-K Service Manual page 22

1
A
Step 5: DIR
Check that the S/PDIF signal is output.
Check that changes by pulling out and inserting the
digital input lines.
IC110 (Pins 3, 5) OPTICAL (Pin3: OPT2, Pin1: OPT1)
Can
No
observe the
digital signal
?
(0 V ⇔ 3.3 V)
Yes
IC109 (Pins 61, 63) OPTICAL (Pin61: OPT2, Pin63: OPT1)
B
Can
No
observe the
digital signal
?
(0 V ⇔ 3.3 V)
Yes
IC109 (Pin 67) COAX
Can
No
observe the
digital signal
?
C
(0 V ⇔ 3.3 V)
Yes
Check that it changes in the Playback and Pause modes of
the USB (iPod).
IC109 (Pin 71) From USB Assy
Can
No
observe the
digital signal
?
(0 V ⇔ 3.3 V)
Yes
D
Check that the data and clock signals are output.
DIR_MCK (Master clock)
IC109 (Pin 10)
Is there
No
a master clock
output?
(0 V ⇔ 3.3 V)
Yes
DIR_LRCK (LR clock)
IC109 (Pin 16)
E
Is there
No
a LR clock
output?
(0 V ⇔ 3.3 V)
Yes
IC109 (Pin 14) DIR_SDTO (Data)
Is there
No
a data
output?
(0 V ⇔ 3.3 V)
F
Yes
22
1
2
Check the path to OUTPUT PIN of
JACK105, JACK106.
Check the path to pins 4, 6 of
IC110 or replace IC110.
Check the path to pins 10-13
of IC110 or replace IC110.
Check the path to CP105 connector.
No
Check the USB Assy.
Is the
No
voltage of PDN
IC109-pin 31
3.3 V?
Check the MAIN Assy.
Replace IC109.
Replace IC109.
2
3
IC109 (Pin 15)
Is there
a bit clock
output?
(0 V ⇔ 3.3 V)
Yes
Switch
IC106 (Pin 4)
Is there
a master clock
output?
(0 V ⇔ 2.5 V)
Yes
IC106 (Pin 7)
Is there
a LR clock
output?
(0 V ⇔ 2.5 V)
Yes
IC106 (Pin 9)
Is there
a bit clock
output?
(0 V ⇔ 2.5 V)
Yes
To Step 6
VSX-519V-K
3
4
DIR_BCK (Bit clock)
No
Replace IC109.
DAI_MCK (Master clock)
No
DAI_LRCK (LR clock)
No
DAI_BCK (Bit clock)
No
Is the
No
voltage of
IC106-pin 1
0 V?
Check the path
Yes
between IC106-pin 1
and MAIN Assy.
Replace IC106.
*IC106 Pin1
0 V : DIR
3.3 V : HDMI
4