VSX-917V-K
114
1
2
3
4
1
2
3
4
C
D
F
A
B
E
C
B
Step 2-7: TMDS
End
IC101 (Pins 13,14,16,17,20,21,23,24) TMDS OUTPUT
E
No
Are there
signals(approx. 0.5
Vp-p) in all
lines?
Yes
Check the IC101.
If IC101 is failure, replace IC101.
Step 3-1: Power Supply
[Video converter]
L1002
Is the voltage
5 V?
No
5 V (VIDEO BUFFER)
Yes
Yes
Yes
Yes
V+5A
Check the L1002.
If L1002 is failure, replace L1002.
Check the L403.
If L403 is failure, replace L403.
Check the L701.
If L701 is failure, replace L701.
Check the L702.
If L702 is failure, replace L702.
Check the IC902 and R901.
If IC902 or R901 is failure,
replace IC902 or R901.
Check the L404.
If L404 is failure, replace L404.
Check the L417.
If L417 is failure, replace L417.
Step 3-2: Video Input
C413
Is there a
composite
signal?
No
CVBS IN
Yes
b-1
Diagnose between the BOARD
TO BOARD Assy and
COMPOSITE Assy.
L701
Is the voltage
3.3 V?
No
3.3 V (VIDEO ENC)
L403
Is the voltage
3.3 V?
No
3.3 V (VIDEO DEC)
Yes
3.3V_DE
3.3V_EN1
Yes
L702
Is the voltage
3.3 V?
No
3.3 V (VIDEO ENC)
3.3V_EN2
IC902 (Pin 1)
Is the voltage
1.8 V?
No
1.8 V (VIDEO DEC)
V+1R8V
Yes
Check the L401.
If L401 is failure, replace L401.
Check the L402.
If L402 is failure, replace L402.
L401
Is the voltage
1.8 V?
No
1.8 V (VIDEO DEC)
1.8V_DE1
Yes
Yes
L402
Is the voltage
1.8 V?
No
1.8 V (VIDEO DEC)
1.8V_DE2
L404
Is the voltage
1.8 V?
No
1.8 V (VIDEO DEC)
1.8V_DE3
IC402 (Pin 8)
Is the voltage
1.8 V?
No
1.8 V (IC402)
1.8V_OSC
* When connected the source
equipment to IN2.
No
No
SDA (HDMI IN2)
SCL (HDMI IN2)
JA102 (Pin 16)
D-5
Is there a
same signal as D-1
when selecting
IN2?
Yes
Check the IC102 and JA102.
If IC102 or JA102 is failure,
replace IC102 or JA102.
Check the IC102 and JA102.
If IC102 or JA102 is failure,
replace IC102 or JA102.
JA102 (Pin 15)
D-6
Is there a
same signal as D-2
when selecting
IN2?
Yes