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Chapter 3 Removal and Replacement Procedures (RRPs)
Version 1 2006.11.28
Replacement 58 PWBA HYUI (PL13.4.1)
When the PWBA HYUI is replaced with a new one, the replacement steps 1) to 3) are
required. These steps are not required when no replacement is performed.
Do not press the PWB when removing the NVM ROM.
Take care not to bend the terminal section of NVM when performing the step described
below.
1) Remove the NVM, using a miniature screwdriver or the like, from the IC socket on the old
PWBA HYUI that was removed from the printer.
2) Remove the NVM from the IC socket on the new PWBA HYUI using a miniature screwdriver
or the like.
Do not use the NVM removed from the new PWBA HYUI.
Ensure that the orientation of the NVM is correct when performing the following step.
3) Install the NVM that was removed from old PWBA HYUI on the IC socket of the new PWBA
HYUI with its notch aligned with the notch in the IC socket.
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