Sony KD-55A8F - 1.4 NO POWER-Muffin2 Failure

Muffin2 Fail Suspected
Muffin2 LOG is
displayed
No
Yes
Follow 1.2&1.3
Yes
Check Muffin Log
related to eMMC
Is there “CRC error”
Power uCom and
DDCON/LDO OK?
No
Yes
Replace eMMC
Crystal X1000
Is there 24MHz?
Replace crystal
No
Yes
Muffin reset released?
ORESETB=High
Check uCom
Follow 1.2
No
Yes
eMMC clock present?
Write DDR check
bootloader
No
Yes
eMMC
data corruption
No
Is there DDR error?
Replace Muffin
Replace DDR
Yes
Store SW log, check SW
behaviors.
Is there DDR error?
Write DDR check
bootloader
No
Replace DDR
Yes
No
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1.4 NO POWER-Muffin2 Failure
SYSSET
2018/03/1622:32:44(GMT+09:00)