Read Sony KD-49X8005C Service Manual 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
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