DECpos 320sx

This service guide provides comprehensive support and maintenance information for the DECpos 320sx point-of-sale system, intended for use by Digital Services personnel, third-party service providers, and self-maintaining customers.

Key sections of the document include:

• System Unit Description: Details hardware specifications (AMD 80386sx/20 processor, 1-16MB RAM), peripheral interface ports, jumper settings, and cable connection diagrams.
• Station Printer: Provides operation instructions, DIP switch configurations for font and communication settings, and procedures for replacing paper rolls and the printer head.
• FRU Removal: Step-by-step procedures for the removal and replacement of field-replaceable units (FRUs), including the floppy disk drive, hard disk drive, power supply, and logic boards, with necessary safety precautions regarding static electricity and memory protection.
• Troubleshooting: Contains extensive tables linking problem areas (System, Keyboard, Customer Display, Monitor, Cash Drawer, Printer, and LAN) to possible causes and corrective actions. It also includes Power-On Self-Test (POST) error codes (beep codes and hexadecimal codes) and an interrupt map.
• Site Inspection Checklist: Provides guidelines for physical installation requirements, covering both integrated and dispersed configurations, power wiring, and network/software considerations.

The guide concludes by directing users to the LOGPICK database for specific spare part numbers.