Pioneer VSX-819H-K Service Manual page 29

5
Step 7: SDA /SCL
SDA (HDMI OUT)
IC1002 (Pin 47)
Does
Check the JACK1004 and IC1002.
a signal output in No
If JACK1004 or IC1002 is failure,
constant period
replace JACK1004 or IC1002.
(0 to 5 V)
?
Yes
SCL (HDMI OUT)
IC1002 (Pin 46)
Does
Check the JACK1004 and IC1002.
a clock output in No
If JACK1004 or IC1002 is failure,
constant period
replace JACK1004 or IC1002.
(0 to 5 V)
?
Yes
IC1002 (Pin 49) SDA_SINK
Is
Check the IC1002 and IC1001.
there a same
No
signal as IC1001-pin 24 If IC1002 or IC1001 is failure,
(0 to 3.3V)
replace IC1002 or IC1001.
?
Yes
IC1002 (Pin 48) SCL_SINK
Is
Check the IC1002 and IC1001.
there a same
No
If IC1002 or IC1001 is failure,
signal as IC1001-pin 23
(0 to 3.3V) replace IC1002 or IC1001.
?
Yes
* When connected the equipment to IN1(BD/DVD);
IC1001 (Pin 44) SDA (HDMI IN1(BD/DVD))
Is
there a same Check the IC1001 and JACK1003.
No
signal as IC1002-pin 49
If IC1001 or JACK1003 is failure,
when selecting
replace IC1001 or JACK1003.
IN1?
(0 to 5 V)
Yes
IC1001 (Pin 43)
SCL (HDMI IN1(BD/DVD))
Is
there a same Check the IC1001 and JACK1003.
No
signal as IC1002-pin 48
If IC1001 or JACK1003 is failure,
when selecting
replace IC1001 or JACK1003.
IN1?
(0 to 5 V)
Yes
5
6
IC1001 (Pin 40)
there a same
signal as IC1002-pin 49
when selecting
IC1001 (Pin 39)
there a same
signal as IC1002-pin 48
when selecting
IC1001 (Pin 36)
there a same
signal as IC1002-pin 49
when selecting
IC1001 (Pin 35)
there a same
signal as IC1002-pin 48
when selecting
To Step 8
Step 8: TMDS
IC1002 (Pins 30,31,33,34,36,37,39,40) TMDS OUTPUT
Are there
signals(approx. 0.5
Vp-p) in all
lines?
VSX-819H-K
6
7
* When connected the equipment to IN2 (TV/SAT):
SDA (HDMI IN2 (TV/SAT))
Is
Check the IC1001 and JACK1002.
No
If IC1001 or JACK1002 is failure,
replace IC1001 or JACK1002.
IN2?
(0 to 5 V)
Yes
SCL (HDMI IN2 (TV/SAT))
Is
Check the IC1001 and JACK1002.
No
If IC1001 or JACK1002 is failure,
replace IC1001 or JACK1002.
IN2?
(0 to 5 V)
Yes
* When connected the equipment to IN3 (DVR/VCR):
SDA (HDMI IN3 (DVR/VCR))
Is
Check the IC1001 and JACK1001.
No
If IC1001 or JACK1001 is failure,
replace IC1001 or JACK1001.
IN3?
(0 to 5 V)
Yes
SCL (HDMI IN3 (DVR/VCR))
Is
Check the IC1001 and JACK1001.
No
If IC1001 or JACK1001 is failure,
replace IC1001 or JACK1001.
IN3?
(0 to 5 V)
Yes
Check the IC1001 or IC1002.
No
If IC1001 or IC1002 is failure,
replace IC1001 or IC1002.
Yes
End
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