Canon LBP-2000 Service Manual page 99

CHAPTER 2
f . EEPROM (IC4, IC5)
It possesses 32K bits of memory, and it allows erasing and writing of data. It is used to retain data
(various settings; printing environment, number of pages) after power is turned off.
g . Program ROM version up
When installing a ROM DIMM for version up to the slot (J1/J2/J3), the functions of the mounted
built-in program ROM will be stopped and its contents will be replaced by the contents held in the
newly installed ROM DIMM. (You need not remove the built-in program ROM.)
IC5
IC4
2
1
2 - 60
ASIC
CPU
J10
J5
18
34
33
36
Figure 2-6-1
Expansion ROM DIMM Slot
J4
2 144
Expansion RAM DIMM Slot
1 143
J7
1
2 1
19
4 3