Olivetti PR4 SR Service Manual page 52

LEGEND:
Ref. Description
F1, F2 Fuse from 1.6 to 125 V
F3 Fuse from 3.15 to 125 V
J6 Display/cassette card
J7 Needle print head
J8 Slip motor
J17 Slip photosensor (on the right-hand side of the slot)
J18 Paper detection photosensor (receipt and journal)
J20 Receipt and journal out of paper microsensor
J21 Power supply
J22 Micr card
J24 Console
J29 Parallel port
J30 Receipt motor
J31 Journal motor
J32 Cutter motor
J33 Carriage motor
5-10 Service Manual XYAA6336