Sony RB1G - Slide Number 268

RB1G CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
268
Troubleshooting
3-1-2-2. No POWER: Ayu2L Control
Note:
(AYU2L) – IC9000
(Brownie)- IC9001
No Power
Check STBY_+3.3V
at AYU2L
(H15, H16, H17 pin
 C7407)
Adapter failure (LW)
NG
NG
Check STBY_+1.0V
at AYU2L
(J15, J16, J17 pin  C7408)
Check Xtal oscillation
X7302, 32.768KHz
(A23, B23 pin  R7386)
OK
Check AC_MON
at AYU2L
(C11 pin  R7352)
look for where
STBY_+3.3V is NG.
look for where
STBY_+1.0V is NG.
NG
Replace X7302 or Ayu2L
OK
It might be power supply problem
Please refer "DC/DC converter check" sheet
Or
Check "STBY LED BLINKING"
Replace AYU2L
NG
Check MAIN_PWR
at AYU2L
(C13 pin  R7344)
OK
Adapter failure (LW)
NG
Check REG+19V
at F9301(BL*)
OK
OK
Check STBY_+1.8V
at AYU2L
(H19 pin
 C7403)
look for where
STBY_+1.8V is NG.
OK
OK
NG
NG
Note:
G BOARD : ( N/A FOR THIS MODEL)
Size B* Board Type
(Segment: LW)
OTHERS
EUROPE JP
24” BLX BLE BLJ
32” BLX BLE BLJ
42” BLX BLE BLJ
50” BLX BLE -