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REP 9.6
Repairs and Adjustments
Reissue
REP 9.6 Billing Data PWB Replacement
Parts List on PL 9.2
Procedure
CAUTION
This procedure is used to maintain the integrity of the serial number and billing data, when one
or more Billin
g PWBs must be replaced.
To maintain the integrity of the serial number and billing data, never replace all three PWBs at
the s
ame time. If any of the following billing data PWBs needs replacing, only replace them
one at a time according to this procedure:
CAUTION
Failure to comply with the board replaceme
nt procedure in GP 10 Replacing Billing PWBs ,
could result in catastrophic NVM corruption.
Whenever any of the following PWBs are replaced, follow the procedure in GP 10 Replacing
B
illing PWBs :
•IOT NVM PWB (PL 9.2).
• IOT CPU PWB (PL 9.
2).
• Half Tone PWB (PL 9.
2).
If two or more serial numbers DO NOT match the M/C label serial number, escalate the service
call to Fi
eld Engineering or the NTC.
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