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Chassis: RB2G, HE-H
Chassis: RB2G, HE-H
18
RB2G
CHASSIS
W850B
Troubleshooting
3-2. LED BLINKING
3-2-1. LED Blinking: 3x (DC Alert & Communication Error)
3 2. LED BLINKING
TUNER
3-time blinking
DC ALERT
DMD TU I2C
Check
AUDIO
NG
I2C bus dumping or
AYU2 / AYU2L
NG
Check D+1.0V at
JL9003 / JL9127 on
the B* Board
F9105,IC9103,
Etc (B* Board)
DC_ALERT
NG
DMD_TU_I2C
or I2CB bus check:
Probe CL2101, CL2102 /
CL2318, CL2101 on TU* Board
Speaker
Speaker Impedance
at SP Connector
Check
Brownie
the B Board
Check
+3 3V MAIN 1
F9104 IC9104
OK
NG
SPIC check
Probe RB8522 /
RB8517
OK
SPI dumping
resistor or
AYU2 /
OK
OK
Check
Audio +12.5V
at pin 18/20 of CN9101
on the B* Board
(except Adapter model)
G* Board
NG
OK
I2C_CCP check
+3.3V_MAIN_1
at JL9117 on
the B* Board
F9104,IC9104,
etc (B* Board)
OK
RB8517
AYU2 /
AYU2L
AYU2L
OK
Check
+12.5V / +19.5V
at Power Amp side
of F4401 / F4601 on
th B* B
d
F4401 / F4601,
IC4901 / IC4601
,etc
(B* Board)
NG
_
R8502 and R8506 /
R8546 and R8547
OK
I2C_CCP
Pull Up
Check
+1.8V_MAIN on
Pin 2 of IC9201
IC9201,etc
(B* Board)
NG
OK
the B* Board
(
)
IC4901 / IC4601,etc
(B* Board)
#2
I2CA bus check:
Probe CL5023,
CL5024
I2CA bus
dumping
resistor
NG
HDMI
NG
Check
+5.0V_MAIN
at JL9113 / JL9112 on
OK
IC9102 / IC9101
,etc (B* Board)
Size
B* Board
G* Board
#3
or AYU2
OK
at JL9113 / JL9112 on
the B* Board
,etc (
oa d)
N t
60”
BAXL
G2SB
70”
BAXL
G2SB
Note:
(AYU2(BAX)/
(AYU2(BAX)/
Ayu2L(BAXL
) – IC9000
(Brownie)- IC9001
2.2-1 - LED Blinking: 3x (DC Alert & Communication Error)
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