RB1G
CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
47
Troubleshooting
3-2-2. LED BLINKING 3x (Audio Error) – BA2 and BM board only (not applicable for this model)
Check 12.5V
( at 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 9, 16, 25, 32
Switching 0V to 12V
around 300-400kHz
No
Yes
Check the CN4601
DC level
~2V
(at
JL4621~JL4624)
No
L4601-L4604
or
C4611-C4614
NG
Yes
IC4601 NG
Check the IC4601
I2S line pin 5, 6, 7, 8
(at CL4601~CL4604)
IC9000 NG
OK
NG
Check the IC4601
pin 18 (at CL4606)
is HIGH?
Yes
Solder NG
No
No
Note:
(AYU2) – IC9000
(Brownie)- IC9001