Nikon SMZ25 Instruction Manual page 42

 Connecting signal cables
Connect the signal cable of the intelligent nosepiece to the
connector "NP" on the motorized focus unit or the relay
box. (See "[4] Connect signal cables.")
3
Attach a zooming body.
Attach the SMZ18 or SMZ25 Zooming Body to the intelligent nosepiece or focus mount adapter.
The attachment procedure is the same for all zooming body types.
The following figure shows an example of attaching the SMZ18 Zooming Body to the intelligent nosepiece.
When attaching to the focus mount adapter
Step (1) is not necessary when attaching the zooming body to the focus mount adapter. Proceed to step (2).
(1) Detach the objective attachment adapter (dovetail
and ring) attached under the zooming body. Loosen
the three M3 hexagon socket head bolts using the
hex wrench (nominal designation: 2.5).
(2) Completely loosen the two M5 hexagon socket head
bolts for fixing the zooming body on the right side of
the zooming body (as viewed from the front) using
the hex driver (nominal designation: 4).
(3) Drop and fit the dovetail groove on the rear side of
the zooming body onto the dovetail of the intelligent
nosepiece mount.
Chapter 3
Assembling
28
Detaching the objective attachment adapter
Signal cable