Epson Equity 286 PLUS - Manual (Page 125)

tabs in slots
2. Hold up the front of the subassembly at a slight angle and
arrange the ribbon cables so they curve underneath the
subassembly and extend out its left side. Then grasp the two
power supply cables, labelled P4 and P5. Each connector has
six pin holes and a large tab on one side, as shown below.
Installing and Removing Options
5-35