This document is an operation manual for the ER-A520 and ER-A530 model cash registers, it mainly introduces the service mode and programming mode of the machine
This Sharp programming manual provides instructions for servicing and programming the ER-A520 and ER-A530 electronic cash registers. It includes safety notes and references to the user programming mode manuals.
The document is organized into four chapters: Service (SRV) Mode, Reading of the SRV Mode Program, Service Mode Programming, and OP X/Z, X1/Z21, X2/Z2 Mode. Each chapter lists page references for quick navigation.
The code is 00ZERA520UPME.
Chapter 3 covers Service Mode Programming.