Sony KDL-32W700C / KDL-32W705C / KDL-40W700C / KDL-40W705C / KDL-48W700C / KDL-48W705C / KJ-32W700C / KJ-40W700C / KJ-48W700C Service Manual ▷ View online
29
Troubleshooting
3-2-1. LED Blinking: 2x (Main power Error)
3-2. LED BLINKING
BAX-L board (XM-L)
Note: Board Details refer Section 3
main page.
main page.
2-time blinking
Check 19.5V_HOLD
at pin 18 of CN9101
on B* Board
NG
Check
Harness/connection
LD*Board to B*Board
LD* Board
OK
AC Adapter
NG
Replace
LD* Board
Harness
OK
NG
OK
Turn off power
IC9101 output
or input short to GND?
SL9104, C9114
Remove IC9101.
Still short?
NG
IC9101 broken
OK
Other part in
+5.0V_MAIN line or
19.5V_SS line broken.
NG
OK
Turn on power
+5V_MAIN
(IC9101) OK?
SL9104
NG
MAIN_PWR high?
IC9101 broken
OK
NG
Refer AYU2L
Troubleshooting
OK
B* Board
Troubleshooting References
30
Troubleshooting
3-2-1. LED Blinking: 2x (Main power Error)
1
Troubleshooting References
31
Troubleshooting
3-2-1. LED Blinking: 2x (Main power Error)
1
SL9104
C9114
IC9101
MAIN_PWR
SYSTEM1_PWR
19.5V_HOLD
32
Troubleshooting
3-2-2. LED Blinking: 3x (DC Alert & Communication Error)
Note: Board Details refer Section 3
main page.
main page.
Speaker
Check
Speaker Impedance
at SP Connector
Check
Audio +12.5V
at pin 18/20 of CN9101
on the B* Board
(except Adapter model)
G* Board
Check
+12.5V / +19.5V
at Power Amp side
of F4601 on
the B* Board
F4601, IC4601
,etc
(B* Board)
IC4601,etc
(B* Board)
AUDIO
NG
OK
NG
OK
NG
OK
#2
#3
I2C bus dumping or
AYU2L
I2CA bus check:
Probe CL5023,
CL5024
I2CA bus
dumping
resistor
or AYU2L
TUNER
NG
OK
NG
HDMI
OK
I2C_CCP check
R8546 and R8547
OK
Brownie
I2C_CCP Pull
Up
3-time blinking
Check D+1.0V at
JL9127 on
the B* Board
F9105,IC9103,
Etc (B* Board)
Check
+3.3V_MAIN_1
at JL9117 on
the B* Board
F9104,IC9104,
etc (B* Board)
DC_ALERT
NG
OK
NG
OK
NG
Check
+1.8V_MAIN on
Pin 2 of IC9201
IC9201,etc
(B* Board)
Check
+5.0V_MAIN
at JL9112 on
the B* Board
at JL9112 on
the B* Board
NG
OK
IC9101
,etc (B* Board)
SPIC check
Probe RB8517
OK
SPI dumping
resistor
or AYU2L
DMD_TU_I2C
or I2CB bus check:
Probe CL2101, CL2102 /
CL2318, CL2101 on
TU* Board
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