Circuit Description
WorkCentre Pro 412, FaxCentre F12 &
3/03
5-31
WorkCentre M15/M15i
5-3-6 Dram Control (WorkCentre Pro 412 & FaxCentre F12)
1) Device
2) Operating Principle
DRAM can either read or write. The data can be stored in the DRAM only when the power is on. It stores
data white the CPU processes data. The address to read and write the data is specified by RAS SIGNAL
and CAS SIGNAL.DRAMWE*SIGNAL is activated when writing data and DRAMOE*SIGNAL, when read-
ing. You can expand up to 64MBYTE of DRAM in this system.
DRAM Bank Configuration
1) Device (WorkCentre M15/M15i)
Type No.
K4E6411D EDO type
Capacity
4Mbytes (1M*16BITS*2)
TYPE NO.
K4S
CAPACITY
16MBYTES (1M * 16BITS * 4Bank * 2)
Summary of Contents for FaxCentre F12
Page 8: ...Table of Contents TOC 6 3 03 WorkCentre Pro 412 FaxCentre F12 WorkCentre M15 M15i ...
Page 44: ...Circuit Description 5 6 3 03 WorkCentre Pro 412 FaxCentre F12 WorkCentre M15 M15i ...
Page 45: ...Circuit Description WorkCentre Pro 412 FaxCentre F12 3 03 5 7 WorkCentre M15 M15i ...
Page 46: ...Circuit Description 5 8 3 03 WorkCentre Pro 412 FaxCentre F12 WorkCentre M15 M15i ...
Page 47: ...Circuit Description WorkCentre Pro 412 FaxCentre F12 3 03 5 9 WorkCentre M15 M15i ...
Page 48: ...Circuit Description 5 10 3 03 WorkCentre Pro 412 FaxCentre F12 WorkCentre M15 M15i ...
Page 49: ...Circuit Description WorkCentre Pro 412 FaxCentre F12 3 03 5 11 WorkCentre M15 M15i ...
Page 50: ...Circuit Description 5 12 3 03 WorkCentre Pro 412 FaxCentre F12 WorkCentre M15 M15i ...
Page 170: ...Disassembly and Reassembly 6 58 3 03 WorkCentre Pro 412 FaxCentre F12 WorkCentre M15 M15i ...
Page 380: ...XEROX EUROPE ...