Canon CiRC2550, Service Manual

Page: 168 / 774

Chapter 4
4-22
C3080i / iR C2550
1) Detach the rear upper cover. (page 10-18) [Detaching the Rear Upper
Cover]
2) Remove the HDD. (page 4-23) [Removing the HDD]
4.7.8.2 Removing the SRAM
0014-2514
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Remove the 2 HDD mounts [2].
- 2 screws each [1]
F-4-32
2) Remove the SRAM PCB [1].
F-4-33
4.7.8.3 When Replacing the SRAM PCB
0014-3122
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
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.
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
Before starting the work, be sure to inform the user that all image data stored
in the Box will be lost and obtain his/her consent.
4.7.9 Boot ROM PCB
4.7.9.1 Before Removing the Boot ROM PCB
0014-2530
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Detach the rear upper cover.
(page 10-18)
[Detaching the Rear Upper
Cover]
2) Remove the HDD.
(page 4-23)
[Removing the HDD]
4.7.9.2 Removing the Boot ROM PCB
0014-2528
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Remove the 2 HDD mounts [2]
- 2 screws each [1]
F-4-34
2) Press the PCB release button [1] to remove the Boot ROM PCB [2].
F-4-35
4.7.10 Image Memory (SDRAM)
4.7.10.1 Before Removing the Image Memory (SDRAM)
PCB
0014-2532
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Detach the rear upper cover.
(page 10-18)
[Detaching the Rear Upper
Cover]
2) Remove the HDD.
(page 4-23)
[Removing the HDD]
4.7.10.2 Removing the Image Memory (SDRAM) PCB
0014-2531
Color iR C3380G / Color iR C2880G / Color iR C3380i / Color iR C3380 /
Color iR C2880i / Color iR C2880 / iR C3480 / iR C3480i / iR C3080 / iR
C3080i / iR C2550
1) Remove the 2 HDD mounts [2].
- 2 screws each [1]
[1] [1] [2]
[1] [1] [2]
[1]
[1] [1] [2]
[1] [1] [2]
[2]
[1]