Oki B 4100 Maintenance Manual page 422

A3.2.14 M17 Circuit Diagram (Page 15/17)
1. Block diagram
The circuit diagram shown on page 15/17 consists of the following connector:
• Connector CN13 that provides an interface between M17 board and optional memory board.
• Connector CN12 and CN17 that provides an interface between M17 board and CTR (PC
interface) board.
Figure A3.2.20 shows the interface between M17 and memory board.
Figure A3.2.21 shows the interface between M17 and PC interface board.
Note 1: One of 1 Mbyte or 2 Mbyte memory board can be added to the memory capacity for
MAD00 to MAD07
MA00 to MA18
CPU
WRL-N
RD-N
IC2
PCS1-N to PCS4-N
IOGA
PSREAD-N
Figure A3.2.20 Interface between M17 Board and Memory Board (option)
40055101TH Rev.4
OKIFAX 5500/5600.
1M byte for OKIFAX 5200/5300.
M17
CN13
B12
A11
A20, A21
B19, B20
A19
A13, B13
5VB
A5, B5, A18,
0V
B18
MEM (option)
CN1
AD00 to AD07
A00 to A18
MWR
MRD-N
PCS1-N to PCS3-N
PSRD-N
5V
0V
DRAM
IC3
IC4
IC5
IC6
422 /