Sony RB1G Service Manual page 272

3-1.3 No Power – Ayu2/Ayu2L Failure
Ayu2/Ayu2L Fail Suspected
Yes
Ayu2/Ayu2L is working,
but specific block fails;
like no picture,
I/O damage, etc
No
Yes
Ayu2/Ayu2L LOG is
displayed
No
Yes
Ayu2/Ayu2L
power is OK
No
Yes
Software was
written successfully
at least one time
No
Replace Ayu2/Ayu2L
See Ayu2/Ayu2L
replacement flow
Find Some
Check DDR
Error
using CheckSW
message
Yes
DDR device fail
Replace both
Ayu2/Ayu2L &
From the error
RawNAND message, we can
find which device
has failure.
Move to device
analysis phase.
Check DDR &
RawNAND
interface
Why is it swap with
original?
Note: For location details, refer to troubleshooting Reference for parts location.
No
Check RawNAND
using CheckSW
No
RawNAND data fail
Data fails are
especially in
environment area.
If this Area has
broken, check soft
cannot run
W600A/ W603A/ W605A/ W607A/ W650A/ W651A/ W653A/
W654A/ W655A/ W656A/W657A/ W658A/ W670A/ W674A
Yes
Find Some
If it is unacceptable
Error
message
RawNAND device
No
Store SW log,
Check SW behaviors.
Erase RawNAND
In this case, corrupted
data are written to
NAND flash in proper
way.
So, we have to check
the logs of exception or
errors.
Erase RawNAND is a
Note:
last option.
(AYU2Ayu2L) – IC9000
(Brownie)- IC9001
RB1G CHASSIS
Store Error
message.
errors, it is
failure
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