Sony KD-55A9F - Page 26

(Supplementary
information)
1.3 No Power DDCON/LDO
26
26
LDOs check
BM3/ DPJ Board OLED Model
Please refer page-22,23 for Ref number.
Check Enable pin
voltage
Is voltage >3V?
1.2 No Power U-Com Failure
or
Enable source
no
START
yes
Change LDO IC
Check Vcc voltage
C4xx/C6xx/C66xx
Is voltage >3V?
Check 3.3V_DDC_OUT
DDCON
(IC403 on BM3J/BM3, IC804 on DPJ)
or
3.3V_STBY (G* board)
no
yes
yes
Board IC Ref Voltage supply
BM3 IC400 1.2V_HDMI
BM3 IC602 1.05V_M3_STBY
BM3 IC603 1.05V_M3_ST_ET
BM3 IC606 2.5V_M3_DDR
BM3 IC607 1.8V_EMMC
DPJ IC6600 1.8V_BE
SYSSET
2018/09/1904:47:37(GMT+09:00)