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Chassis: RB2G, HM
Chassis: RB2G, HM
15
2-1 NO POWER
2-1-4. NO POWER: Ayu2L control
No Power
2 1. NO POWER
Check STBY_+3.3V
at AYU2L
(H15, H16, H17 pin
C7376
)
Look for AC_MON line
at CN9101 pin12/C9131 or
Adapter
/ Gboard failure
NG
NG
Check AC_MON
at AYU2
(C11 pin
C7334
)
look for where
STBY_+3.3V is NG.
C7376
)
Adapter
/ Gboard failure
(
p
)
OK
OK
Look for MAIN_POWER line
at CN9101 pin11
or replace AYU2
NG
Check MAIN_PWR
at AYU2
(C13 pin
C7315
)
Check STBY_+1.8V
at AYU2L
(H19 pin
C7374
)
look for where
STBY_+1.8V is NG.
NG
Check STBY_+1.0V
at AYU2L
look for where
OK
NG
Check +19.5V(Adapter)
OK
NG
at AYU2L
(J15, J16, J17 pin
C7380
)
OK
look for where
STBY_+1.0V is NG.
Adapter/
G-board
NG
(
p
)
Or
+12V(G-Board)
at
CN9101 pin21
OK
Check Xtal oscillation
X7301, 32.768kHz
(A23, B23 pin
NG
Replace X7301 or Ayu2L
It might be power supply problem
Please refer "DC/DC converter check" sheet
Or
OK
R7398
)
OK
Check "STBY LED BLINKING"
2.1-4 - No Power: AYU2L Control
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