Pioneer VSX-84TXSi Service Manual page 259

5
A
M
DDC_RX1
IC152 (pins 2, 5)
Check the soldering of CN101.
No
Are signals
If soldering has not been done
detected?
correctly, replace CN101.
Yes
M
IC152 (pins 3, 6)
Are
Check the soldering of IC152.
signals the same
No
If soldering has not been done
as those at Pins 2
and 5 detected
correctly, replace IC152.
?
Yes
N
Q153 (pins 1, 4)
Are
signals the
Check the soldering of Q153.
same as those at Pins
No
6 and 3 but whose voltage If soldering has not been done
has been converted
correctly, replace Q153.
from 5V to 3V
detected?
Yes
O
IC161 (pins 2, 15)
Are
signals the
Check the soldering of IC161.
No
same as those at Pins
If soldering has not been done
3 and 13 detected
correctly, replace IC161.
immediately after
the power is
turned on?
Yes
P
IC151 (pin 8)
Check the soldering of D151.
No
Is the voltage
If soldering has not been done
about 5V?
correctly, replace D151.
Yes
Check the soldering of IC151.
If soldering has not been done
correctly, replace IC151.
5
6
Q
IC101 (pins 58, 59,
62, 63, 66, 67, 70, 71)
Do signals
(approx. 0.5 Vp-p)
run in all the
lines?
R
IC172 (pins 2, 5)
Are signals
detected?
R
IC172 (pins 3, 6)
Are
signals the same
as those at Pins 2
and 5 detected
?
S
Q173 (pins 1, 4)
Are
signals the
same as those at Pins
6 and 3 but whose voltage
has been converted
from 5V to 3V
detected?
O
IC161 (pins 4, 11)
Are
signals the
same as those at Pins
3 and 13 detected
immediately after
the power is
turned on?
T
IC171 (pin 8)
Is the voltage
about 5V?
Replace IC171
VSX-74TXVi
6
7
TMDS_RX2
Check the soldering of CN102.
No
If soldering has not been done
correctly, replace CN102.
Yes
DDC_RX2
Check the soldering of CN102.
No
If soldering has not been done
correctly, replace CN102.
Yes
Check the soldering of IC172.
No
If soldering has not been done
correctly, replace IC172.
Yes
Check the soldering of Q173.
No
If soldering has not been done
correctly, replace Q173.
Yes
Check the soldering of IC161.
No
If soldering has not been done
correctly, replace IC161.
Yes
Check the soldering of D171.
No
If soldering has not been done
correctly, replace D171.
Yes
7
8
A
B
C
D
E
F
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