Sony KD-49X7 D Series Service Manual page 37

1.4 NO POWER – Muffin2 Failure
Muffin2 Fail Suspected
Muffin2 LOG is
Yes
displayed
No
Power uCom and
No
DDCON/LDO OK?
Yes
No
Crystal X1000
Is there 24MHz?
Yes
No
Muffin reset released?
ORESETB=High
Yes
Yes
eMMC clock present?
No
Replace Muffin
Write DDR check
bootloader
Follow 1.2&1.3
Replace crystal
Check uCom
Follow 1.2
Write DDR check
bootloader
TV Business Division
Is there DDR error?
No
Check Muffin Log
related to eMMC
Is there "CRC error"
No
Store SW log, check SW
behaviors.
Yes
Is there DDR error?
No
eMMC
37
data corruption
Yes
Replace DDR
Yes
Replace eMMC
Replace DDR
37