Kodak III Appendix A

Appendix A

Contacts Function Description

1 & 3 Zero-Position Switch

(Models A and E Plus) Connects to an internal single-pole single-throw normally

open switch.Contacts are closed when the slide tray is at any

position other than zero. These leads connect only to the

switch terminals.

4 & 5 Shutter Switch Connects to an internal single-pole single-throw normally

closed switch. Contacts are open when a slide is in the

projector gate and the shutter is open. These leads connect

only to the switch terminals.

7 & 8 Low-Voltage Supply For operating external equipment. The current is supplied by

a secondary winding on the main motor, isolated from the

line-voltage power, and is available whenever the main

projector motor is running. Supply is 25.5 V, 500mA (1/2 A)

maximum. Contact number 8 is common (return) for the

remote-control circuit. Contact number 7 is the “hot” lead and

is fused with a slow-blowing fuse. (Replacement requires

disassembly of the projector by a qualiﬁed technician.)

6 & 8 Forward Tray Connects to the forward tray-advance circuitry in the

projector. These contacts are connected internally to the

remote-control receptacle and an electrical connection made

at either receptacle will result in a forward cycle.

2 & 8 Reverse Tray Cycle Connects to the reverse tray-advance circuitry in the

projector. These contacts are connected internally to the

remote-control receptacle and an electrical connection made

at either receptacle will result in a reverse cycle.

Shell Plug Ground If a plug with a conducting shellis used, it is connected to the

projector frame (chassis) through the special-application

receptacle and to earth ground through the projector's power

cable.