Pioneer VSX-84TXSi Service Manual page 260

1
Step 3: HDMI
A
Step 3-2: CLK, DATA
U
IC101 (pins 1-3, 121) VIDEO
No
Is there a clock
?
Yes
U
IC101 (pins D0-D23)
B
No
Is there a data
?
Yes
U
IC101 (pins 78, 88)
AUDIO (DVD)
Are there
No
clock and data?
C
Yes
V
IC201 (pin 11)
No
Is there a data
?
Yes
Check the INTERFACE Assy
and DIGITAL MOTHER Assy.
D
U
IC101 (pins 81-88)
AUDIO (DVD-AUDIO/Multi ch)
Are there No
clock and data?
Yes
V
IC201 (pins 12-18)
E
Are there
No
clock and data?
Yes
Check the INTERFACE Assy
and DIGITAL MOTHER Assy.
F
214
1
2
Check the soldering of IC101.
If soldering has not been done
correctly, replace IC101.
Check the soldering of IC101.
If soldering has not been done
correctly, replace IC101.
Check the soldering of IC101.
If soldering has not been done
correctly, replace IC101.
Check the soldering of IC201.
If soldering has not been done
correctly, replace IC201.
Check the soldering of IC101.
If soldering has not been done
correctly, replace IC101.
Check the soldering of IC201.
If soldering has not been done
correctly, replace IC201.
2
3
Step 3-3: Tx
W
D381 (Cathode)
Is the voltage
"H" (5 V)?
Yes
X
IC301 (pins 19, 20)
Is there a
signal
?
Yes
Y
Q353 (pins 3, 6)
Are
signals the
same as those at Pins
4 and 1 but whose voltage
has been converted
from 3V to 5V
Yes
detected?
Yes
Z
IC301 (pins 26, 27,
29, 30, 32, 33, 35, 36) TMDS_TX
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
Yes
CN301
Is soldering of
CN301 OK?
Yes
Replace CN301
VSX-74TXVi
3
4
HPD
Check the soldering of D381.
No
If soldering has not been done
correctly, replace D381.
DDC_TX
Check the soldering of IC301.
No
If soldering has not been done
correctly, replace IC301.
No
Check the soldering of Q353.
If soldering has not been done
correctly, replace Q353.
Check the soldering of IC301.
No
If soldering has not been done
correctly, replace IC301.
No
Solder the CN301correctly.
4