5
6
7
8
51
5
6
7
8
VSX-84TXSi
C
D
F
A
B
E
B
Yes
F3
Is the voltage
5 V?
Yes
IC801 (Pin 31)
DSDA0
D1
Yes
IC801 (Pin 32)
DSCL0
D1
V+5R1(HDMI IN2)
V+5R1(HDMI IN2)
No
No
No
Check the patterns in the path.
Check JA1101.
No
Replace JA1101.
Yes
JA1101 (Pin 16)
Step 3-5: DDC
SDA(HDMI IN1)
* When connected the source
equipment to IN1.
G1
No
Check the patterns in the path.
Check JA1101.
No
Replace JA1101.
Yes
JA1101 (Pin 15)
SCL(HDMI IN1)
G2
Check the patterns in the path.
Check IC1201,IC1202.
No
Replace IC1201,IC1202.
No
Check the patterns in the path.
Check IC1201,IC1202.
No
Replace IC1201,IC1202.
IC1202 (Pin 4)
G3
* When connected the source
equipment to IN3.
Yes
IC801 (Pin 33)
R1PWR5V
D1
Is the voltage
"H" (3.3 V)?
No
No
Replace D802, Q801 or R859.
Check the patterns in the path.
* When connected the source
equipment to IN3,4.
Yes
Yes
JA1102 (Pin 16)
SDA(HDMI IN2)
G4
No
* When connected the source
equipment to IN2.
Yes
Yes
C
Yes
No
Replace JA1151.
Check JA1151.
F4
Is the voltage
5 V?
* When connected the source
equipment to IN4.
No
Replace JA1152.
Check JA1152.
Check the patterns in the path.
Check IC1205.
No
Replace IC1205.
Check the patterns in the path.
Check IC1206.
No
Replace IC1206.
Check the patterns in the path.
Check JA1102.
No
Replace JA1102.
JA1102 (Pin 15)
SCL(HDMI IN2)
G5
No
Yes
Check the patterns in the path.
Check JA1102.
No
Replace JA1102.
IC801 (Pin 31)
DSDA0
D1
No
Check the patterns in the path.
Check IC1205.
No
Replace IC1205.
IC1204 (Pin 7)
G6
No
Yes
Check the patterns in the path.
Check IC1203,IC1204.
No
Replace IC1203,IC1204.
IC1204 (Pin 4)
G6
No
Yes
Check the patterns in the path.
Check IC1203,IC1204.
No
Replace IC1203,IC1204.
No
Does
Does
a clock output in
constant period
(0 to 5 V)
?
Is there
a same signal as G2
(0 to 4.4 V)?
Is there
a same signal as G4
(0 to 4.4 V)?
Is there
a same signal as G5
(0 to 4.4 V)?
Is there
a same signal as G2
(0 to 3.3 V)?
Is there
a same signal as G4
(0 to 3.3 V)?
Is there
a same signal as G1
(0 to 3.3 V)?
Does
a signal output in
constant period
(0 to 5 V)
?
Does
a signal output in
constant period
(0 to 5 V)
?
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TEL 13942296513 QQ 376315150 892498299