Sony KD-55A9F - Page 25

(Supplementary
information)
1.3 No Power DDCON/LDO
25
DDCONs check
Check Enable pin
voltage
Is voltage >2.5V?
1.2 No Power U-Com Failure
or
Enable source
Change Fuse
no
no
START
yes
Change DDCON IC
Check fuse
F4xx / F6xx/F8xx/F66xx
Is fuse OK?
Check Vcc voltage
C4xx / C6xx/C8xx/C66xx
Is voltage >12.0V?
no
yes
yes
1) Check POWER_ON P-on u-com #pin10
(Refer 1.2 No Power U-Com Failure)
2) Check G* board
Board IC Ref Voltage supply
BM3 IC402 5V_MAIN/5V_AUDIO
BM3 IC403 3.3V_MAIN/3.3V_AUDIO
BM3 IC405 1.8V_TU
BM3 IC604 1.05V_M3_A
BM3 IC608 1.0V_M3_CORE
BM3 IC609 1.0V_M3_CPU
BM3 IC610 1.0V_M3_GPU
DPJ IC804 3.3V_MAIN
DPJ IC6601 1.5V_BE_DDR
DPJ IC6602 0.9V_BE
DPJ IC6604 0.8V_BE
BM3/ DPJ Board OLED Model
Please refer page-22,23 for Ref number.
SYSSET
2018/09/1904:47:37(GMT+09:00)