Canon Color imageRUNNER C5180 Series, Service Manual

Page: 161 / 851

Chapter 5
5-31
5.7.8 SRAM PCB
5.7.8.1 Preparation for Removing the
SRAM PCB
1) Remove the rear upper cover. (page 12-
22) Reference[Removing the Rear Upper Cover]
2) Remove the rear left cover (upper). (page 12-
23) Reference[Removing the Rear Left Cover
(Upper)]
3) Remove the left rear cover (upper). (page 12-
21) Reference[Removing the Left Rear Cover
(Upper)]
5.7.8.2 Removing the SRAM PCB
1) Remove the main controller box cover [3].
(Referring to Procedure 5.7.3.2)
Points to Note When Removing the HDD
Take care to avoid static damage when removing the
HDD.
It is also important to protect the HDD from impact.
2) Remove the HDD [4].
(Referring to Procedure 5.7.11)
3) Remove the 2 HDD mounting plates [2].
(Referring to Procedure 5.7.7.2)
4) Remove the SRAM PCB [1].
F-5-46
5.7.8.3 When Replacing the SRAM PCB
When the SRAM PCB is replaced, all data in its
memory will be lost (file-related, user mode-related,
service mode-related, history-related files). There
will be no error operation, and initialization will take
place automatically.Å@
If you pull out the SRAM PCB from machine B and
mount it to machine A, the PCB will be initialized
and be rendered useless for machine A or B. Take
full care.
1) When you turn on the power after replacing the
SRAM PCB, the machine will perform automatic
initialization and will indicate a message on its
panel to the effect that you are to turn off and then
on the power switch found on its right side.
Follow the message and turn off and then on the
machine.
2) Using service mode, initialize the RAM.
COPIER>FUNCTION>CLEAR>MN-CON
Inform the user that the following steps will result in
the loss of all image data in the Box before starting
the work.
5.7.9 Boot ROM PCB
5.7.9.1 Preparation for Removing the Boot
ROM PCB
1) Remove the rear upper cover.
(page 12-
22)
Reference[Removing the Rear Upper Cover]
2) Remove the rear left cover (upper).
(page 12-
23)
Reference[Removing the Rear Left Cover
(Upper)]
3) Remove the left rear cover (upper).
(page 12-
21)
Reference[Removing the Left Rear Cover
(Upper)]
[1]