Sony RB1G Service Manual page 261

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