DESCRIPTION
Part number: A20B-8100-0137
Description: 21iA MAIN PCB (PMC-SA1), LCD TYPE
Product Series: A20B-8100
The following hardware is mounted to this main PCB:
• CPU for CNC control
• Power supply
• 2–axis to 4–axis control
• Spindle control
• LCD/MDI
• I/O link
• PMC–SA1/SA5
• Analog output/high–speed DI
• RS–232C x 2
• Memory card interface
• Personal computer function(210i/210is)
CAUTION
Before starting replacement work, back up the contents (such as parameters and programs) of the SRAM memory of the CNC. Otherwise, the contents of the SRAM memory may be lost during replacement work
