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3.
Disconnect all the PJ's from the MCU PWB
Figure 2 PJ's
4.
Remove the Screws (6) and the MCU PWB
Figure 3 Removing Screws
Initial Issue
WorkCentre 5335 Family Service Documentation
(Figure
2).
(Figure
3).
4
BUS Updated 12/2011
Pin breakage occurs if the EEPROM is carelessly removed.
5.
When replacing the MCU PWB, remove the EEPROM from the old MCU PWB and install
it onto the new MCU PWB
(Figure
Replacement
A fatal error occurs to machine software if the MCU PWB is replaced before the EPROM is
installed on MCU PWB, and powered on.
1.
When replacing the MCU PWB, install the EEPROM from the old MCU PWB onto the new
PWB.
2.
To reinstall, carry out the removal steps in reverse order.
3.
Switch on the machine power.
4.
Verify that the serial numbers and billing data are the same.
a.
Refer to
Machine ID/Billing
Check that the Serial Number and Billing Data for IOT, Sys1, and Sys2 are the same.
b.
If they are the same, return to Service Call Procedures in Section 1.
07/2011
4-9
CAUTION
4).
5
Figure 4 EEPROM
CAUTION
Data.
Repairs & Adjustments
REP 3.5
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