Read Sony KD-55X9000C Service Manual online
TROUBLE SHOOTING
3-2-2. NO POWER-U-Com Failure (2/2)
From previous page
A
Yes
Check P_ON_#2
P-on ucom #pin14
Is the voltage >3.0V?
Change IC9017
No
Yes
Check ORESETB
N
Check ORESETB
P-on ucom #pin12
Is the voltage >3.0V?
Change IC9017
No
Yes
Ch
IC9017
No
Check X_SYSTEM_RST
P
# i 16
Change IC9017
No
Yes
P-on ucom #pin16
Is the voltage >3.0V?
Change IC9017
No
If PANEL_PWER_ON (R9172) is 0V
Check XRST
Change IC9017
No
If BL_MUTE (R9174) is 0V
Check BL_ON
Change IC9017
Yes
P-on ucom #pin17
Is the voltage >3.0V?
END
Ucom IC9017 is working OK
Change IC9017
Yes
P-on ucom #pin18
Is the voltage >3.0V?
Ucom IC9017 is working OK
125
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