Sony XBR-65Z9D Service Manual page 27

FLOW
1-4. NO POWER MUFFIN2 FAILURE
Muffin2 Fail Suspected
Yes
Muffin2 LOG is
displayed
No
No
Power uCom and
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
(*)Possible only at where the bootloader update can be carried out.
XBR-65/75/100Z9D
Write DDR check
Is there DDR error?
bootloader
No
Check Muffin Log
Follow 1.2&1.3 related to eMMC
Is there "CRC error"
No
Store SW log, check SW
Replace crystal
behaviors.
Check uCom
Follow 1.2
Write DDR check
Is there DDR error?
bootloader(*)
No
eMMC
data corruption
Yes
Replace DDR
Yes
Replace eMMC
Yes
Replace DDR
TROUBLE SHOOTING
27