Sony RB1G Service Manual page 33

Troubleshooting
3-2. LED Blinking
3-2-1. LED BLINKING 3x (DC Alert, Audio Error & Communication Error)
3-time blinking
DC_ALERT
NG
Check D+1.0V at
F9105,IC9103,etc
JL9129
(B* Board)
on the B* Board
OK
NG
Check +3.3V_MAIN_1
F9102,IC9102,etc
at JL9116 on
(B* Board)
the B* Board
OK
NG
Check +1.8V_MAIN on
IC9201,etc
Pin 2 of IC9201
(B* Board)
OK
NG
Check +5V_MAIN
IC9101,etc
at JL9132 on
(B* Board)
the B* Board
TUNER
DMD_TU_I2C
NG
or
I2C bus dumping or
I2CB bus check:
AYU2
Probe CL2205,
CL2206
OK
Brownie
SPIC check
Probe SPI dumping
R8541,R8542
resistor
(BKE/X) only or AYU2
OK
I2C_CCP check
R8502 and
I2C_CCP Pull
R8503
Up
OK
HDMI
I2CA bus check:
NG
I2CA bus
Probe CL5023,
dumping
CL5024
resistor
or AYU2
OK
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
(*)
Size B* Board Type
Note:
(Segment: LW)
(AYU2) – IC9000
(Brownie)- IC9001
OTHERS
32" BKX
42" BKX
AUDIO
Check
NG
Speaker Impedance
at SP Connector
OK
Check AUDIO+12.5V
NG
at pin 8/10 of
CN9101 on
the B* Board
OK
Check +12.5V
at Power Amp side
NG
of F4601
on
the B* Board
OK
IC4601,etc
(B* Board)
(Continue) #3
Note:
G BOARD : ( N/A FOR THIS MODEL)
RB1G CHASSIS
EUROPE JP
BKE BKJ
BKE BKJ
Speaker
G-board /
Adapter (LW)
F4601,IC4601,etc
(B* Board)
(Continue) #2
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