Sony KD-55A9F - Page 21

21
1.2 No Power u-com Failure
Check P_ON_HL
CL811 or
P-on u-com #pin18 (IC800)
is >3.0V?
no
yes
yes
Check P_ON_#2
CL813 or
P-on u-com #pin13 (IC800)
is >3.0V?
no
Check ORESETB
CL812 or
P-on u-com #pin14 (IC800)
Is the voltage >3.0V?
no
yes
Check X_SYSTEM_RST
CL810 or
P-on u-com #pin20 (IC800)
Is the voltage >3.0V?
Change IC800
no
yes
Change IC800
Change IC800
Change IC800
Previous page
END
u-com IC800 is working OK
Check BL_ON
R828 or
P-on u-com #pin7 (IC800)
Is the voltage >3.0V?
Change IC800
no
yes
Check OPCTRL4 (BL_MUTE)
R815 or
P-on u-com #pin8 (IC800)
Is the voltage >3.0V?
no
yes
Check “X_BE_RST” (from SOC Muffin).
*If X_BE_RST is >3.0, SOC BE(IC7000) problem.
Otherwise, SOC Muffin 3(IC1000) problem.
BM3 Board OLED Model
SYSSET
2018/09/1904:47:37(GMT+09:00)