ER-A570 (serv.man5). ERA570 Option Programming Manual - Sharp ECR Service Manual (repair manual). Page 5

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CHAPTER 1. ER-A570 SRN (IN-LINE) SYSTEM CONFIGURATION
The ER-A570 in-line system conforms to the SHARP Retail Network
that consists of a master and a maximum of 15 satellites (inclued the
one backup master).
Fig. 1-1
Drawer (max.3 units)
ER-A5RS
Modem/NCU
HOST
ER-A57R1
Sharp
Retail
Network
ER-A570
ER-01RA/02RA
ER-A570
ER-01RA/
ER-02RA
ER-A6IN
ER-A57R1
ER-A6IN
Master
Backup master
ER-01MB/02MB
ER-A57R1
ER-A570
ER-01RA/
ER-02RA
ER-A6IN
Satellites
ER-01MB/02MB
ER-01MB/02MB
ER-03DW
ER-03RP or
ER-04RP
Kitchin printer
NOTE:
Master :                               1 unit
Satellite:                              Max. 15 units
ER-03RP/04RP:                 Max. 9 units
Satellite+ER-03RP/04RP: Max.15 units
CHAPTER 2. HARDWARE REQUIREMENTS
1. Master System
The following optional units are required to complete the master
system configuration.
The master may require additional RAM for allocating the IRC files.
1) ER-A6IN: SRN I/F control board
2) ER-01RA: Option RAM chip (32KB)
ER-02RA: Option RAM chip (128KB)
ER-01MB: Option RAM board (Max. 512K bytes)
ER-02MB: Option RAM board (1M bytes)
3) ER-A57R1: Option device control ROM (1 chip)
•
The ROM chip (ER-A57R1) is installed on the main PWB of ER-
A570.
2. Satellite system (inclued the backup 
master)
The following optional units are required to complete the Satellite
systems configuration.
The satellite may require additional RAM for allocating the IRC files.
1) ER-A6IN: SRN I/F control board
2) ER-01RA: Option RAM chip (32KB)
ER-02RA: Option RAM chip (128KB)
ER-01MB: Option RAM board (Max. 512K bytes)
ER-02MB: Option RAM board (1M bytes)
3) ER-A57R1: Option device control ROM (1 chip)
•
The ROM chip (ER-A57R1) is installed on the main PWB of ER-
A570.
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