Sony RB1G, Руководство по обслуживанию, Страница: 282 / 479

RB1G CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
282
Troubleshooting
3-2-3. LED BLINKING 3x (Audio Error) – BKE, BKX, BKJ, BLE, BLX and BLJ 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 38, 42, 43, 47
Switching 0V to 19 V
around 300-400kHz
No
Yes
Check the CN4601
DC level ~ 9.7 V
(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
Note:
(AYU2/Ayu2L) – IC9000
(Brownie)- IC9001
Size B* Board Type
(Segment: LW)
OTHERS EUROPE JP
24” BLX BLE BLJ
32” BKX/BLX BKE/BLE BKJ/BLJ
42” BKX/BLX BKE/BLE BKJ/BLJ
50” BLX BLE -