Sony KDL-32W700C / KDL-32W705C / KDL-40W700C / KDL-40W705C / KDL-48W700C / KDL-48W705C / KJ-32W700C / KJ-40W700C / KJ-48W700C Service Manual ▷ View online
37
Troubleshooting
3-2-2. LED Blinking: 3x (DC Alert & Communication Error)
Troubleshooting References
Board Name
Board PWB (A side)
Detail
BAXL
(CN9101)
CN9101
38
Troubleshooting
3-2-3. LED BLINKING 3x (Audio Error) BAX-L(HE-L, HM, HE-H, XM-L) board only
Check 19.5V
(at fuse F4601)
to GND
impedance
F4601,IC4601,etc
(B* Board)
Replace F4601
High
enough
Low impedance
IC4601
burn or broken ?
Replace IC4601
Yes
Check broken parts
around IC4601
#2
IC4601,etc
(B* Board)
#3
IC4601 or parts around IC4601
NG
Check the IC4601
Out pin 37, 41, 44, 46
Switching 0V to 19V
around 300-400kHz
No
Yes
Check the CN4601
DC level ~9.7V
(at JL4621~JL4624)
No
L4601-L4604
or C4611-C4614
NG
Yes
IC4601 NG
Check the IC4601
I2S line pin
4, 12, 15, 16 (at
CL4601~CL4604)
IC9000 NG
OK
NG
Check the IC4601
pin 18 (at CL4606)
is HIGH?
Yes
Solder NG
No
No
39
Troubleshooting
3-2-3. LED BLINKING 3x (Audio Error) BAX-L(HE-L, HM, HE-H, XM-L) board only
39
C
L
4602
C
L
4603
C
L
4604
IC4601
BAX-L board Side A
F4601
Troubleshooting Reference
3
6
6
1
1
2
2
1
3
2
4
2
5
5
3
7
4
8
3
9
4
1
4
4
4
6
1
8
4
1
5
1
6
40
Troubleshooting
CL4601
JL4621
JL4622
JL4623
JL4624
BAX-L board Side B
Troubleshooting Reference
3-2-3. LED BLINKING 3x (Audio Error) BAX-L(HE-L, HM, HE-H, XM-L) board only
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