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Chapter 4 Disassembly / Assembly and Adjustments
[Replacement]
Ensure proper electrostatic discharge procedures are followed to prevent
damage to the PWBA ESS SFP and options during replacement.
The replacement steps of procedure 1) to 3) are to be required for changing the
PWBA ESS SFP. Those steps are not required for only removing it.
There are two ROM chips that must be moved from the original PWBA ESS SFP
to the replacement PWBA. Ensure both these chips are installed into the same
locations on the replacement PWBA.
Avoid applying excessive pressure when removing and replacing the ROM
chips.
Take care not to bend the terminal section of ROM when carrying out the job
described below.
Do not use ROMs removed from new PWBA ESS AIO.
1) Remove the ROM, using a miniature
screwdriver or the like, from the IC
sockets on old PWBA ESS AIO that
was removed from the printer.
2) Remove the ROM from IC socket on
new PWBA ESS AIO using a minia-
ture screwdriver or the like.
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