Bayer HealthCare RapidPoint 400 Series Service Manual page 317

h. Reinstall the two red wires to positions 18 and 19 and the two black
wires to positions 20 and 21 in the outboard cable harness
connector, and secure with a cable tie.
15. Reinstall the cartridge interface assembly. Refer to Installing the Rear
Cover, Cartridge Interface Assembly, and Power Module Assembly on
page 378.
Rev. C Replacing Components 317