1
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4
C
D
F
A
B
E
50
1
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VSX-84TXSi
A
Step 3-3: Hot Plug Detect
Q1101 (Pin B)
HPDET0(HDMI IN1)
* When connected the source
equipment to IN1.
E1
Is the voltage
"L" (0 V)?
Yes
JA1101 (Pin 19)
HPD(HDMI IN1)
E2
Is the voltage
"H" (5 V)?
Check the patterns in the path.
Check Q1101,R1101.
Yes
Q1102 (Pin B)
HPDET1(HDMI IN2)
* When connected the source
equipment to IN2.
E3
Is the voltage
"L" (0 V)?
Yes
JA1102 (Pin 19)
R1PWR5V
E4
Is the voltage
"H" (5 V)?
Yes
No
No
B
Yes
No
Replace IC501.
No
Replace Q1101 or R1101.
Check the patterns in the path.
Check Q1102,R1102.
No
Replace Q1102 or R1102.
Check the patterns in the path.
Check Q1151,R1151.
No
Replace Q1151 or R1151.
Check the patterns in the path.
No
Replace IC501.
Check the patterns in the path.
Q1151 (Pin B)
HPDET2(HDMI IN3)
* When connected the source
equipment to IN3.
No
Check the patterns in the path.
Yes
IC801 (Pin 34)
R0PWR5V
D1
Is the voltage
"H" (3.3 V)?
No
No
Yes
Check the patterns in the path.
Check Q1152,R1152.
No
Replace Q1152 or R1152.
Q1152 (Pin B)
HPDET3(HDMI IN4)
* When connected the source
equipment to IN4.
E7
Is the voltage
"L" (0 V)?
Yes
No
No
Replace IC501.
Check the patterns in the path.
No
Replace D801, Q801 or R853.
Check the patterns in the path.
JA1152 (Pin 19)
HPD(HDMI IN4)
E8
Is the voltage
"H" (5 V)?
Yes
No
Check the patterns in the path.
Check D981,R989.
No
Replace D981 or R989.
Check the patterns in the path.
Check JA901.
No
Replace JA901.
JA901 (Pin 18)
HPD(HDMI OUT)
E9
IIs the voltage
"H" (5 V)?
Yes
No
IC901 (Pin 18)
HPD(HDMI Tx)
D2
Is the voltage
"H" (5 V)?
Yes
No
Step 3-4: Source 5V
V+5R0(HDMI IN1)
* When connected the source
equipment to IN1.
F1
Is the voltage
5 V?
Yes
No
Replace JA1101.
Check JA1101.
No
V+5R1(HDMI IN2)
* When connected the source
equipment to IN2.
* When connected the source
equipment to IN1,2.
F2
Is the voltage
5 V?
Yes
No
Replace JA1102.
Check JA1102.
No
Check D1101.
Replace D1101.
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