2) 3 times blinking (DC Alert & Communication Error)
37
TROUBLE SHOOTING
NG
NG
I2C bus dumping
or Muffin
TUNER
NG
3-time blinking
Check +5.0V_MAIN
at L9015, 4.959V
<Voltage<5.285V?
F9013, IC9021,
etc (B* Board)
DC_ALERT
NG
OK
OK
Check I2C_A
/ I2C_D bus:
Probe JL6010, JL6011
/ JL6021/JL6022
Speaker
Check
Speaker Impedance
at SP Connector,
8
Ω
±
1.2
Ω ?
Check Audio
+12.5V
at pin 16/18 of CN9000
on the B* Board
G* Board
Check
+12.5V
at Power Amp side
of F7751 on
the B* Board
F7751, IC7751
, etc (B* Board)
IC7751, etc
(B* Board)
AUDIO
OK
OK
NG
OK
KDL-65W850C, 855C, 857C, 75W850C, 855C
Size B* Board G* Board
65”
BMX
GL1SB
75”
BMX
GL1C