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Chassis: RB2G, HE-H
Chassis: RB2G, HE-H
13
RB2G
CHASSIS
W850B
Troubleshooting
3-1-3 NO POWER: Ayu2L control
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.
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.
OK
NG
Check STBY_+1.0V
at AYU2L
(J15, J16, J17 pin
C7380
)
look for where
STBY_+1.0V is NG.
OK
Adapter/
G-board
NG
Check +19.5V(Adapter)
Or
+12V(G-Board)
at
CN9101 pin21
OK
NG
Check Xtal oscillation
X7301, 32.768kHz
(A23, B23 pin
R7398
)
OK
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"
Size
B* Board
G* Board
60”
BAXL
G2SB
70”
BAXL
G2SB
2.1-3 - No Power: AYU2L Control
RB2G
CHASSIS
W850B
Troubleshooting
3-1-2. No POWER - DC/DC converter check
START
Check
C9137
Voltage.
Ch
k F9101
no
Check
C9175
Check F9105
no
Is the voltage 5V?
Check
C9192
Voltage.
Check F9101
Check F9102
yes
no
is it 1.0V?
Check F9105
Check
C9167
is it 1 15V?
Check F9106
no
Is the voltage 5V?
Check
C9153
Voltage.
Is the voltage 3 3V?
Check F9104
yes
no
END
yes
is it 1.15V?
Is the voltage 3.3V?
Check
C9172
Voltage.
Is the voltage 1.5V?
Check F9104
yes
no
yes
Size
B* Board
G* Board
60”
BAXL
G2SB
70”
BAXL
G2SB
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