Read Sony KD-49X8005C Service Manual online
KD-49/55X8005C,XBR-55/65X800C,805C,807C,809C,810C
114
TROUBLE SHOOTING
3-2-2. NO POWER-U-Com Failure (2/2)
A
Yes
Check P_ON_#2
P-on ucom #pin14
Is the voltage >3.0V?
Change IC9017
No
Yes
Check ORESETB
P-on ucom #pin12
Is the voltage >3.0V?
Change IC9017
No
Yes
Change IC9017
No
END
Ucom IC9017 is working OK
Yes
Check X_SYSTEM_RST
P-on ucom #pin16
Is the voltage >3.0V?
Change IC9017
No
Yes
If BL_MUTE (R9174) is 0V
Check BL_ON
P-on ucom #pin18
Is the voltage >3.0V?
Change IC9017
No
Yes
If PANEL_PWER_ON (R9172) is 0V
Check XRST
P-on ucom #pin17
Is the voltage >3.0V?
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