Creative Engineering ROCK-A-FIRE EXPLOSION - Page 251

326 pages

Save Page as PDF

To Next Page

To Next Page

To Previous Page

To Previous Page

Loading...

D.

Lighting.Problems

Organ

and

Sign

problems

General Information

In

dealing

with

one

of

the

most

obvious

problems

such

as

all

lights

out,

be

sure

that

you

have

no

other

problems

like

characters

not

moving,

or

other

movements

missing.

In

other

words,

be

sure

that

it

is

strictly

an

Organ

or

Sign

problem

before

proceeding.

Extreme

caution

must

be

exercised

when

working

near

live

A

c.

wiring.

Note:

If

you

suspect

that

you

have

an

A.C.

problem,

you

may

want

to

locate

the

Organ

and

Sign

electrical

hook-up

and

breaker.

The

Organ

and

Sign

are

plugged

into

the

convenience

receptacle

on

the

back

wall

of

the

platform.

The

breaker

for

this

circuit

may,

or

may

not

be

located

in

panel

L3,

so

a

search

for

the

breaker

that

controls

the

convenience

outlet

in

the

theater

may

be

necessary.

Testing

Organ

or

Sign

Driver

Boards

-

Go

to

the

voltage

regulator

on

the

board

and

see

if

it

has

a

power

output.

Be

careful

-

live

A.C.

Voltage.

Read

the

voltage

on

the

voltage

regulator

legs;

the

center

one

is

common

and

the

outer

one

to

the

right

is

positive,

see

pages

5-059

thru

5-061.

If

there

is

voltage

on

the

regulator,

then

check

the

A.C.

input

on

the

3

pin

terminal,

pins

#1

&

#3.

See

charts

for

Organ

cables

and

pin

outs

on

pages

5-054

and

5-059,

also

5-060

and

5-062.

If

you

have

an

A.C.

110

volt

input

and

no

voltage

on

the

regulator

then

replace

the

Organ

Driver

Board.

If

there

is

no

A.C.

coming

in,

then

check

the

breaker

and

reset

it

if

necessary.

If

you

have

A.

C.

input

and

an

output

on

the

power

supply

from

the

board,

find

the

opto-isolator

that

controls

the

particular

set

of

lights

you

have

in

question,

see

pages

5-060

and

5-063.

Take

a

small

screw

driver

and

bridge

between

pins

4

and

5

of

the

'opto'

or

MT1

to

the

gate

of

the

transistor

or

triac.

Also

check

the

collector

leg

of

the

transistor

and

see

if

the

25

volts

is

reaching

the

board.

If

it

works

when

you

bridge

the

'opto'

and

you

have

25

volts

present,

then

repair

or

replace

the

transistor,

or

the

board.

Strobe

light

trouble-shooting

-

In

the

case

of

the

strobe

light,

you

can

test

it

independent

of

the

driver

board

by

bridging

the

red

or

yellow

wire

to

the

black

wire,

located

in

the

first

position

of

the

terminal

strip

at

the

lower

left,

page

5-062.

(Caution

again

must

be

advised

in

the

case

of

hot

A.C.

wiring.)

Replace

it

if

it

does

not

work.

Don't

forget,

it

may

be

just

the

bulb

that

is

burned

out

so

try

replacing

the

bulb

or

exchanging

it

before

you

replace

the

whole

assembly

of

the

strobe.

RAF

100

Light

Control

Box

Pin

up

the

bit

and

check

for

voltage

on

the

transistor

as

you

would

for

any

other

bit

or

movement.

Watch

for

the

light,and

exchange

the

Long

Driver

Board

--

repair

or

replace

if

necessary.

~

nno