Pioneer SX-LX70SW Service Manual page 22

1
QQ
3 7 63 1515 0
A
A
HPD(HDMI IN3)
Q1152 (Pin C)
No
Is the voltage
"H" (5 V)?
Yes
HPD(HDMI OUT)
JA301 (Pin 18)
B
No
IIs the voltage
"H" (5 V)?
Yes
HPD(HDMI Tx)
IC301 (Pin 51)
No
Is the voltage
"H" (5 V)?
C
Yes
Step 3-4: Source 5V
TE
L 13942296513
* When connected the source
V+5R1(HDMI IN1)
No
Is the voltage
5 V?
D
Yes
* When connected the source
R0PWR5V
IC101 (Pin35)
No
Is the voltage
"H" (3.3 V)?
Yes
* When connected the source
E
V+5R2(HDMI IN2)
No
Is the voltage
5 V?
Yes
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2
E8
Check the patterns in the path.
Check Q1152,R1152.
No
Replace Q1152 or R1152.
E9
Check the patterns in the path.
Check JA301.
No
Replace JA301.
E10
Check the patterns in the path.
Check D301,R313.
No
Replace D301 or R313.
equipment to IN1.
F2
Check JA1102.
No
Replace JA1102.
equipment to IN1.
F5
Check the parts and
patterns in the path.
No
Replace IC151.
equipment to IN2.
F3
Check JA1151.
No
Replace JA1151.
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3
8
Is the voltage
5 V?
Yes
IC101 (Pin30)
Is the voltage
"H" (3.3 V)?
Yes
Step 3-5: DDC
JA1102 (Pin 16)
Does
a signal output in
constant period
(0 - 5 V)
Q Q
3 6 7
?
Yes
JA1102 (Pin 15)
Does
a clock output in
constant period
(0 - 5 V)
?
Yes
IC1204 (Pin 7)
Is there
a same signal as G4
(0 - 4.4 V)?
Yes
IC1204 (Pin 4)
Is there
a same signal as G5
(0 - 4.4 V)?
Yes
IC101 (Pin 33)
u163
Is there
a same signal as G4
(0 - 3.3 V)?
Yes
B
SX-LX70SW
3
4
2 9 9 4
* When connected the source
equipment to IN3.
V+5R3(HDMI IN3)
F4
No
Check JA1152.
Replace JA1152.
* When connected the source
equipment to IN2,3.
R1PWR5V
F6
No
Check the parts and
patterns in the path.
Replace IC151, Q152 or R156.
* When connected the source
equipment to IN1.
SDA(HDMI IN1)
G4
No
Check the patterns in the path.
Check JA1102.
1 3 1 5 0 5 8 2 9
Replace JA1102.
SCL(HDMI IN1)
G5
No
Check the patterns in the path.
Check JA1102.
Replace JA1102.
G6
No
Check the patterns in the path.
Check IC1203,IC1204.
Replace IC1203,IC1204.
G1
No
Check the patterns in the path.
Check IC1203,IC1204.
Replace IC1203,IC1204.
DSDA0
m
D1
co
No
Check the patterns in the path.
Check IC1205.
.
Replace IC1205.
4
2 8
9 9
No
No
9 4 2 8 9 9
No
No
No
No
No