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4/00 UDC 3300 Controller Product Manual 261
9.8 Parts Replacement Procedures
Introduction
These procedures tell you how to access and replace the following printed
wiring boards in your controller.
• Display/Keyboard
• MCU/Output
• Power/Input
• 2nd Input
• Digital Input
• Auxiliary Output
• DMCS Communications
• RS422/485 Communications
• Modbus Communications
Equipment needed
To accomplish the procedures that follow, you will need the following
equipment:
• Phillips Head Screwdriver
• Flat Bladed Screwdriver
• Small Pliers