Sony RB1G - Slide Number 261

RB1G CHASSIS
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
261
Troubleshooting
3-1-2-1. No POWER: Ayu2 Control
Note:
(AYU2) – IC9000
(Brownie)- IC9001
No Power
Check STBY_+3.3V
at AYU2
(F11, G11, K13 pin
 C7348)
Look for AC_MON line
at CN9101 pin2 (except BK*) or
G-board / Adapter failure (LW)
NG
NG
Check STBY_+1.0V
at AYU2
(N13, P13 pin  C7350)
Check Xtal oscillation
X7302, 32.768KHz
(A7, B7 pin  R7386)
OK
Check AC_MON
at AYU2
(C6 pin  R7352)
look for where
STBY_+3.3V is NG.
look for where
STBY_+1.0V is NG.
NG
Replace X7302 or Ayu2
OK
It might be power supply problem
Please refer "DC/DC converter check" sheet
Or
Check "STBY LED BLINKING"
Look for MAIN_POWER line
at CN9101 pin1 (except BK*)
or replace AYU2
NG
Check MAIN_PWR
at AYU2
(A9 pin  R7344)
OK
G-board /
Adapter (LW)
NG
Check REG+12V
at CN9101 pin7
Check REG+19V
at F9301(BK* only)
OK
OK
Check STBY_+1.8V
at AYU2
(K5, L5, L10, J7 pin
 C7349)
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 -