A3.10 Memo (Memory) Circuit Diagram (Option) - Oki OKIOFFICE44 Service Manual

A3.10 MEMO (Memory) Circuit Diagram (Option)

By mounting this optional memory board (MEM/MEM-2), it can be used for the expansion memory.
1. Block diagram
Figure A3.10.1 shows a related signal of memory board.
MEMO/MEMO-2 circuit consists of the following block.
1) 512 kbyte pseudo static RAM x 4 (RAM1 to RAM4).
Used as follows:
•
•
•
•
2) Memory capacity
• 1 Mbyte (MEMO-2) memory board can be added for OKIOFFICE 44.
The relationship between memory capacity and mounted boards are shown in the following
table
Equipment
OKIOFFICE 44
Note: The OKIOFFICE 44 does not back-up the message received in memory during a
Board Descriptions
Picture memory for the ECM send/receive modes.
Picture memory for the memory transmission mode.
Picture memory for the retransmission data.
Picture memory for the reception in memory
Memory RAM1
Capacity
1 Mbyte Mounted
power failure.
RAM2 RAM3
Mounted Not mounted Not mounted
A - 56 OKIOFFICE 44 Serv. Man., P/N 59276801
RAM4 Mounted
Board Name
MEMO-2