Pioneer SX-LX70SW Service Manual page 23
Audio multi-channel receiver subwoofer
Hide thumbs
Also See for SX-LX70SW:
- Service manual (141 pages) ,
- Operating instructions manual (182 pages) ,
- Operating instructions manual (114 pages)
Table of Contents
Advertisement
5
B
DSCL0
IC101 (Pin 34)
D2
Is there
No
Check the patterns in the path.
a same signal as G5
Check IC1206.
(0 - 3.3 V)?
Yes
* When connected the source
equipment to IN2.
SDA(HDMI IN2)
JA1151 (Pin 16)
G7
Does
a signal output in
No
Check the patterns in the path.
constant period
Check JA1151.
(0 - 5 V)
?
Yes
SCL(HDMI IN2)
JA1151 (Pin 15)
G8
Does
a clock output in
No
Check the patterns in the path.
constant period
Check JA1151
(0 - 5 V)
?
Yes
IC1252 (Pin 7)
G9
Is there
No
Check the patterns in the path.
a same signal as G7
(0 - 4.4 V)?
Check IC1251,IC1252.
Yes
IC1252 (Pin 4)
G2
Is there
No
Check the patterns in the path.
a same signal as G8
(0 - 4.4 V)?
Check IC1251,IC1252.
Yes
DSDA1
IC101 (Pin 28)
D3
Is there
No
Check the patterns in the path.
a same signal as G7
Check IC1255.
(0 - 3.3 V)?
Yes
DSCL1
IC101 (Pin 29)
D4
Is there
No
Check the patterns in the path.
a same signal as G8
Check IC1257.
(0 - 3.3 V)?
Yes
5
6
No
Replace IC1206.
No
Replace JA1151.
No
Replace JA1151.
No
Replace IC1251,IC1252.
No
Replace IC1251,IC1252.
No
Replace IC1256.
No
Replace IC1257.
SX-LX70SW
6
7
* When connected the source
equipment to IN3.
SDA(HDMI IN3)
JA1152 (Pin 16)
G10
Does
a signal output in
No
Check the patterns in the path.
constant period
Check JA1152.
(0 - 5 V)
?
Yes
SCL(HDMI IN3)
JA1152 (Pin 15)
G11
Does
a clock output in
No
Check the patterns in the path.
constant period
Check JA1152.
(0 - 5 V)
?
Yes
IC1254 (Pin 7)
G12
Is there
No
Check the patterns in the path.
a same signal as G10
(0 - 4.4 V)?
Check IC1253,IC1254.
Yes
IC1254 (Pin 4)
G3
Is there
No
Check the patterns in the path.
a same signal as G11
Check IC1253,IC1254.
(0 - 4.4 V)?
Yes
DSDA1
IC101 (Pin 28)
D3
Is there
No
Check the patterns in the path.
a same signal as G10
Check IC1255.
(0 - 3.3 V)?
Yes
DSCL1
IC101 (Pin 29)
D4
Is there
No
Check the patterns in the path.
a same signal as G11
Check IC1257.
(0 - 3.3 V)?
Yes
SDA(HDMI OUT)
JA301 (Pin 16)
G13
Does
a signal output in
No
Check the patterns in the path.
constant period
Check JA301.
(0 - 5 V)
?
Yes
C
7
8
A
No
Replace JA1152.
No
Replace JA1152.
C
No
Replace IC1253,IC1254.
No
Replace IC1253,IC1254.
D
No
Replace IC1256.
E
No
Replace IC1257.
No
Replace JA901.
23
8
B
F
Advertisement
Table of Contents
Troubleshooting
