Bell and Howell 1598, User Manual

Page: 3 / 38

P a n chromatic TQIII & TQIII Specialist User Manual
Page 3
Connections to power supply
1 Place the projector on a stand or other firm support. Undo the two clips by the carrying handle and pull the top of
the side cover towards you, subsequently lifting the cover off the projector. Unless you intend to use the loudspeaker
built into the projector, unwind all or part of the speaker cord stored alongside the auditorium loudspeaker inside the
side cover and connect the plug at the end of this cord into the socket la at the back of the projector. Stand the side
cover by the screen, facing the audience. Set the two amplifier controls lb and 1 c to their "0" positions. On Specialist
models, also set 1 d to "0'. Any permanent magnet loudspeaker or loudspeaker system with an impedance of
between 4 and 16 ohms may be connected through socket 1 a. Specialist models have a further Sound Output socket
le enabling them to be used in conjunction with a separate audio amplifier. This "line" output has an impedance 0(600
ohms, with pins 3 and 5 of the DIN socket carrying the audio signal and pin 2 as earth (ground).
2 Unwind the power lead from its bobbin at the non 'operating side of the projector. Do not connect the power lead
to the mains until you reach Stage 7. This projector is suitable only for alternating current (AC) supplies of 50Hz or
60Hz and may be seriously damaged if connected to direct current (DC) supplies. If you have any doubt about
whether your supply is AC or DC, seek the advice of a competent electrical contractor or your local electricity office
before connecting the projector to the mains.
3 Check that the setting of the voltage selector 3a corresponds to the voltage of your local supply. To change the
setting, first remove the moulded power lead connector from its socket 3b (if it has already been inserted), loosen
screw 3c and move the sliding cover to the left. Then use a small coin or screwdriver to rotate the selector until the
correct voltage setting appears against the pointer 3d. As the selector is rotated, the settings appear in the following
sequence: 100/110/130/200/220/ 240/250. If there is no setting exactly corresponding to your Supply, Set the
selector to the next higher voltage. On a 230V supply, for example, the "240" setting should be used.
4 If necessary, fit a suitable power plug to the power lead. The three coloured wires in this lead should be connected
to the plug terminals as follows
COLOUR PLUG TERMINAL
Brown Live
Blue Neutral
Green/Yellow Earth (Ground)
5 To use the projector amplifier for announcements or a commentary, connect a microphone to socket 5a. This socket
may also be used for a tape recorder or record player. Any device connected to 5a should have an impedance of
between 300 and 3,000 ohms. (2.000 ohms giving the best result.) The sound level of speech or music through 5a is
regulated by the volume control Sb. When the socket is in use, film sound tracks cannot he reproduced.
6 Check that the power switch 6a is in the "off" position ("0' side of switch depressed) and insert the power lead
connector into the projector socket. It will fit only in the correct position, with the lead extending towards the voltage
selector.
7 Connect the power plug to the mains supply. Set the main power switch to "on" by depressing the side marked with
a red dot. You will hear the cooling fan start, indicating that the projector is ready for use.