Sony KD-49X8005C Service Manual ▷ View online
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
121
TROUBLE SHOOTING
2) Power Off Checking*2
(4) 12.5V check BMFL / BMFW
Measure voltage between PVDD and GND at
capacitor C7706 or C7707.(See 3.3)
Voltage rise more than 0V for a moment at
power on
→ Yes
(5) 12.5V check KS-PWB (XS)
Measure voltage between PVDD and GND at
capacitor C7722, C7762, C7782 or C7834. (See
3.3)
Voltage rise more than 0V for a moment at
power on
→ Yes
(5) 12.5V check
12.5V is supplied to
K-PWB for a moment
before LED 3x blinking ?
Power Off Check*2
No
Replace G-K Harness
OK ?
Yes
Replace G-PWB
OK ?
No
Yes
No
Yes
Return to
LED 3x blinking
Finish
Segment “XS”?
Yes
No
(4) 12.5V check
12.5V is supplied to
B-PWB for a moment
before LED 3x blinking ?
No
Replace B-K Harness
OK ?
Yes
Replace G-PWB
OK ?
No
Yes
No
Yes
Return to
LED 3x blinking
Finish
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
122
TROUBLE SHOOTING
3) Power Off Checking*3
No Sound
Without LED 3x
No
No sound only
Analog RF and Digital RF ?
Yes
No
No sound only HDMI ? Yes
No
No
Headphone is connected to
HP/Audio Out terminal ?
Disconnect the Headphone
Go to
Power Off Checking*1
Yes
No
Go to
No Sound Tuner
Go to
No Sound HDMI
Go to
No Sound Audio
[Sound]→
[Headphone Speaker Link]
setting is [On] ?
Change [Sound]→
[Headphone Speaker Link]
to [Off], OK ?
Replace B-PWB
Yes
No
HP/Audio out terminal or Headphone detect
GPIO may be broken
AV receiver is connected
to HDMI in ?
Yes
Select [External Inputs]→
[BRAVIA Sync Settings]→
[BRAVIA Sync Control]→[off]
[Speakers] setting is
[Audio System] ?
Change the setting to
[TV Speakers]
Yes
Yes
No
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
123
TROUBLE SHOOTING
3-3-4. 3 Times Blinking (HDMI EQ Error)
3-time blinking
IC5212
BMFL/BMFW board
Check
VS GND impedance
of +1.0V_HDMI
at HDMI EQ side
(ex.C5335)
NG
Check
VS GND impedance
of EQ_+3.3V_MAIN
at HDMI EQ side
(ex.C5317)
NG
OK
OK
IC5212
Check
VS GND impedance
of +5V_BOSTON
at HDMI EQ side
(ex.C5351)
NG
IC5212
OK
Check
Voltage
of +1.0V_HDMI,
EQ_+3.3V_MAIN,
+5V_BOSTON
at HDMI EQ side
(ex.C5335, C5317,
and C5351, )
NG
Power,
DDCON
OK
Check
Frequency of X’tal
(X5202)
27MHz?
NG
X’tal or
around parts.
X5202,
R5478(100ohm),
R5368(1Mohm)
C5298(10pF)
C5297(12pF)
OK
Check
I2C_C bus signal.
at CL5259 and
CL5261.
NG
IC5212
Or IC1000
OK
IC1000
This 3 times blinking function for HDMI EQ
error has been disabled for the SW later
than PKG2173.
So, for the above applicable models, you
can Ignore this flow.
For those models with the SW before
PKG2073.
This 3 times blinking function for HDMI
EQ error has been enabled except for the
sets with the SW updated by OTA.
error has been disabled for the SW later
than PKG2173.
So, for the above applicable models, you
can Ignore this flow.
For those models with the SW before
PKG2073.
This 3 times blinking function for HDMI
EQ error has been enabled except for the
sets with the SW updated by OTA.
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
124
TROUBLE SHOOTING
3-3-5. 4 Times Blinking (LED Voltage Error)
4-time blinking
Check
R9027
on the B* Board
B* Board
LED driver or G* board
Between 0.898V to 2.997V
Change LD board or G* board.
0.897V or less
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