Bell&Howell AUTOLOAD FILMOSOUND 2585 Manual de usuario

Disclaimer

This scanned document is provided as a courtesy. We make

no representation for its accuracy. It is for use by qualified

personnel only. There are high voltage and mechanical

hazards present in this equipment. Do not attempt repair

unless you are fully aware of the safety precautions to be

taken. Use this information at your own risk.

www.paulivester.com

SERVICE

INSTRUCTIONS

AUTOLOAD®

FILMOSOUND 16mm

PROJECTOR

(AUTOMATIC

THREADING

j

MODELS

2585,

2590,

2592

©

1980

Bell

&

Howell

Company

All

Rights

Reserved.

In]

BELL

s

HOWELL

GENERAL

SERVICE

DEPT.

7100

McCORMICK

ROAD

CHICAGO,

ILLINOIS

60645

PART

NO.

74421

REVISED

PRINTED

IN

U.S.A.

DECEMBER

1980

r

FACTORY

SERVICE

RECEIVING

ADDRESS

1

Bell

&

Howell

Company

General

Service

Department

Audio

-Visual

Division

7100

No.

Central

Park,

Dock

1

Chicago,

IL

60645

L

FOR

PARTS,

ORDERS

AND

SERVICE

INFORMATION

Bell

&

Howell

Company

General

Service

Department

Audio

-Visual

Division

7100

No.

McCormick

Road

Chicago,

IL

60645

(312)

262-1600

I I-

TABLE

OF

CONTENTS

Section/Paragraph

Page

Section/Paragraph

Page

INTRODUCTION

ADJUSTMENTS

AND

TESTS

1.

General

1

30.

General

Instructions

29

2.

Description

of

Models

1

31.

Optical

Alignment

29

3.

Automatic

Loading

Operation

. .

1

32.

Adjusting

the

Intermittent

4.

Special

Maintenance

Precautions

3

Mechanism

30

5.

Cleaning

Instructions

3

33.

Lens

Carrier

Adjustment

35

6.

Lubrication

Instructions

3

34.

Still

-Run

Clutch

Adjustment

.

35

7.

General

Replacement

Data

3

35.

Automatic

Loading

System

8.

Fuse

Replacement

4

Adjustments

—

General

37

9.

Lamp

Replacement

4

36.

Adjusting

the

Loading

Guides

38

37.

Checking

and

Adjusting

the

DIS

ASSEMBLY/REASSEMBLY

Loop

Restorer

39

PROCEDURES

38.

Timing

the

Sprockets

39

10.

General

Precautions

9

39.

Adjusting

the

Reel

Arms

and

11.

Projector

Rear

Cover

Removal.

9

Rewind

Clutch

41

12.

Drive

Belt

Replacement

9

40.

Adjusting

the

Sound

System

42

13.

Projector

Top

Cover

and

41.

Projector

Speed

Checks

43

Handle

Removal

10

42.

Checking

Clearance

for

the

14.

Internal

Speaker

Replacement

.

11

Exciter

Lamp

Cover

43

15.

End

Cap

Removal

11

43.

Gear

Shift

Tension

Adjustment

44

16.

Blower

Repairs

11

44.

Idler

Gear

Backlash

17.

Main

Switch

Replacement

12

Adjustment

44

18.

Drive

Motor

Replacement

12

45.

Circuit

Explanation

for

the

19.

Transformer

Replacement

14

20

Watt

Amplifier

(With

or

20.

Rear

Reel

Arm

Replacement

.

14

Without

Dual

Tone

Control)

.

44

21.

Front

Reel

Arm

Replacement

. .

15

22.

Still-Run/Animation

Clutch

and

Heat

Shutter

Linkage

Repair

16,

TROUBLE

SHOOTING

23.

Amplifier

and

Controls

Repair

.

16

24.

Soundhead

Replacement

17

46.

Miscellaneous

Troubles

and

25.

Soundhead

Positioning

19

Remedies

49

26.

Mechanism

Assembly

Replacement

19

47.

Picture

Troubles

and

Remedies

51

27.

Disassembly

of

Mechanism

48.

Film

Transport

Troubles

and

Components

19

Remedies

52

28.

General

Mechanism

Components

49.

Sound

System

Troubles

and

Reassembly

Precautions

22

Remedies

53

29.

Reassembly

of

Mechanism

50.

Trouble

Shooting

the

Automatic

Components

22

Loading

System

55

LIST

OF

ILLUSTRATIONS

Section

Page

INTRODUCTION

Figure

A.

Automatic

Loading

Operation

2

Figure

B.

Service

Tools

7

DISASSEMBLY/REASSEMBLY

PROCEDURES

Figure

C.

Projector

Rear

Cover

(Multi

-Line

Voltage

Models

Shown)

10

Figure

D.

Removing

the

Top

Cover

an

d

Handle

10

Figure

E.

Front

End

Cap

and

Speaker

Removal

11

Figure

F•

Blower

Repairs

12

Figure

G•

Replacing

the

Main

Switch

13

Figure

H.

Replacing

the

Drive

Motor

13

Figure

J.

Replacing

the

Transformer

(Single

-Line

Voltage

Model)

14

Figure

K.

Replacing

the

Rear

Reel

Arm

15

Figure

L.

Replacing

the

Front

Reel

Arm

16

Figure

M.

Amplifier

and

Controls

Repair

1

.

7

Figure

N.

Replacing

the

Soundhead

and

Mechanism

Assemblies

18

Figure

P.

Positioning

the

Soundhead

19

ADJUSTMENTS

AND

TESTS

Figure

Q.

Aligning

the

Optical

System

29

Figure

R.

Aperture

Plate

and

Shuttle

Tooth

Clearance

30

Figure

S.

Shuttle

Arms

and

Cam

Assembly

31

Figure

T.

Adjusting

Shuttle

Tooth

Height

31

Figure

U•

Adjusting

Fit

of

Shuttle

Arms

to

Pull

-Down

Cam

32

Figure

V.

Center

Shuttle

Tooth

Travel

Adjustment

33

Figure

W.

Still

-Rim

Clutch

Adjustments

34

Figure

X.

Automatic

Loading

System

Adjustments

36

Figure

Y.

Threading

Lever

Clearance

Adjustment

38

Figure

Z.

Adjusting

the

Loop

Restorer

-

40

Figure

AA.

Adjusting

the

Reel

Arms

41

Figure

AB.

Positioning

the

Sound

Drum

and

Silicon

Photocell

42

Figure

AC.

Stabilizer

Roller

Adjustment

42

Figure

AD.

Adjusting

Gear

Shift

Tension

and

Backlash

44

Ilk

•

11

"SI

Model

2592A

16mm

Automatic

Threading

Projectors

FEATURE

DESCRIPTION

LIST

Color

Charcoal

gray

Input

Voltage

—

2585A/AML

120VAC,

60Hz

2585AX/AXU

.

120/220/240V,

50/60Hz

2590A,

2592A

120VAC,

60Hz

2592AX/ASX

.

120/220/240V,

50/60Hz

Film

Threading

Fully

automatic

Film

Speeds

—

Sound

24fps

in

forward

and

reverse

Silent

18fps

in

forward

and

reverse

Projector

Controls

-

2585,

2590

Forward/Reverse

2592AX/ASX

Forward/Reverse/Still-Run

2592A

Forward/Reverse/Still-Run

and

Directamotion

Projection

Lamp

—

2585,

2592.

. .

Type

ELC,

24V/250W/50

hr

2590'

Type

BHB,

120V/250W/25

hr

Projection

Lens

—

2585

2590,

2592

2

inches

(51mm)

f/1.6

2

inches

(51mm)

f/1.2

Shutter

—

2585A/AML,

2590A,

2592A

Rotating

threeblade

2585

AX/AXU,

2592AX/ASX

Rotating

two

blade

Exciter

Lamp

. . .

Type

BAK,

4V/0.75

Amp,

300

hr

(approx.)

Amplifier

Output

. . . . . . . .

20

Watts

RMS

Built

In

Speaker

x

permanent

magnet

16

ohm

(over-

load

protected)

Amplifier

Controls

-

2585,

2590

Volume/Tone

2592

Volume/Treble/Bass

Dimensions

. .

.14-1/4"w

x

16"h

x

10-1/4"d

Approximate

Weight

—

2585A/AML

33

pounds

(15Kg)

2585AX/AXU

35.5

pounds

(16Kg)

2590A

29

pounds

(13.2Kg)

2592A

34

pounds

(15.4Kg)

2592AX

36

5

pounds

(16.5Kg)

2592ASX

39.5

pounds

(17.9Kg)

11

RECOMMENDED

SPARE

PARTS

LIST

FOR

REPAIR

OF

50

MODEL

2585,

2590

AND

2592

AUTOMATIC

THREADING

16MM

SOUND

PROJECTORS

REFERENCE:

SERVICE

MANUAL

NO.

74421

PART

NO.

DESCRIPTION

QTY

24047

Belt,

Take-up

6

34884

Lamp,

Exciter,

Type

BAK

6

44223

Lamp,

Projector,

Type

BHB

2

44459

Belt,

Drive

6

45695

Switch,

Rotary

1

49945

Switch,

Rotary

2

117172

Fuse,

Slo-Blo,

4

amp

6

305792

Fuse,

Slo-Blo,

2

amp

6

308638

Fuse,

Slo-Blo,

3/4

amp

6

710396

Lamp,

Projector,

Type

ELC

6

710660

Switch,

Rotary

2

707257

Motor,

Drive

1

015569

Photodiode

Assembly

1

015921

Thermal

Fuse

and

Sleeve

Assembly

6

077195

PCB

Amplifier

Assembly

2

077632

Thermal

Fuse

and

Sleeve

Assembly

6

078577

PCB

Amplifier

Assembly

2

iii

16mm

Sound

Projectors

Models

2585/2590/2592

INTRODUCTION

1.

GENERAL.

This

Service

Manual

provides

the

neces-

sary

information

for

the

repair

and

adjust-

ment

of

the

Bell

&

Howell

Company

16mm

Automatic

Loading

Sound

Projectors,

Models

2585,

2590

and

2592.

Major

design

and

oper-

ating

characteristics

are

listed

in

the

Fea-

ture

Description

List

on

the

preceding

page.

An

illustrated

Parts

Catalog

is

included

at

the

rear

of

the

manual

to

identify

replace-

ment

parts

and

to

assist

in

the

disassembly

and

reassembly

of

these

projectors.

2.

DESCRIPTION

OF

MODELS.

As

noted

in

the

following

chart,

this

manual

covers

several

variations

of

the

basic

2500

-

series

automatic

loading

projectors.

Each

model

is

"letter

-coded"

in

the

Parts

Catalog

so

that

replacement

parts

which

are

not

common

to

all

projectors

can

be

readily

identified.

Parts

peculiar

to

Canadian

ver-

sions

are

so

indicated

in

the

parts

lists.

MODEL

CODE

2585A

2585AML

2585AX

2585AXU

2590A

2592A

2592AX

2592ASX

H

A

B

C

D

E

F

G

Except

for

differences

in

operating

voltages

(single

-line

or

multi

-line)

and

certain

spe-

cial

features,

all

projector

models

covered

in

this

service

manual

are

basically

identical.

The

single

-line

voltage

units

(suffix

letter

"A"

in

the

model

designator)

operate

on

120VAC,

60Hz

and

are

equipped

with

a

line

cord

that

is

wired

into

the

projector.

The

multi

-line

voltage

units

(all

"AX"

models)

are

equipped

with

a

voltage

selector

switch

which

provides

a

means

for

varying

input

voltages

(120

-

240V,

50/60Hz)

and

to

match

input

voltages

with

those

available

globally.

A

male

plug

is

supplied

to

mate

with

a

fe-

male

receptacle

located

on

the

rear

cover

for

accommodation

of

global

requirements.

Model

2585AML

is

a

militarized

version

of

the

2585A

unit

and

is

further

identifiable

by

two

5

amp

Slo-Blo

fuses

mounted

on

the

top

cover.

The

2585AXU

and

2592ASX

models

are

the

only

projectors

in

this

series

that

are

equipped

with

a

front

cover

containing

speakers.

The

sound

system

control

knobs

located

on

the

operating

side

of

the

base

are

not

the

same

for

all

models.

The

2585/2590

models

are

equipped

with

a

volume

control

and

a

single

tone

control.

All

2592

models

are

equipped

with

a

volume

control

and

two

tone

controls;

one

for

treble

and

one

for

bass.

All

of

the

2592

models

are

designed

for

"still"

projection,

however,

only

the

2592A

model

is

equipped

with

the

Directamotion

®

(animation)

feature.

To

activate

the

anima-

tion

feature

place

the

main

switch

in

the

"forward

project"

or

"reverse

proj

ect"

posi-

tion.

Then,

with

the

projector

running,

place

the

run/still

lever

in

the

"still??

position.

To

advance

film

frame

-by

-frame,

press

and

release

the

animation

lever

located

at

the

top

left

corner

of

the

projector

mechanism

housing.

To

advance

several

frames

of

film

(or

a

length

of

film

at

regular

projection

speed)

press

and

hold

the

animation

lever

down.

Release

the

lever

to

stop

film

motion.

To

resume

normal

film

projection

return

the

run/still

lever

to

the

"run"

position.

3.

AUTOMATIC

LOADING

OPERATION.

The

automatic

loading

system

consists

of

a

series

of

film

guides,

loopformers

and

rollers

designed

to

advance

and

guide

the

film

smoothly

and

precisely

through

the

film

path

to

the

take-up

reel.

This

is

ac-

complished

when

the

system

is

in

the

"load"

(closed)

position.

When

the

system

is

in

the

"open"

(run)

position,

all

guides

are

clear

of

the

film

path.

All

projectors

are

1

Service

Instructions

C)

FWD.

4

PROJ.

5

6/

C=I

2

Figure

A.

Automatic

completely

gear

-driven,

with

shifting

from

forward

to

reverse

accomplished

by

means

of

a

rocker

plate/idler

gear

arrangement.

The

upper

and

lower

guides

are

connected

by

a

mechanical

linkage

with

a

locking

lever

at

the

lower

end

to

actuate

(close)

the

sys-

tem.

A

film

escape

mechanism

is

included

at

the

upper

end

of

the

linkage

to

prevent

damage

to

the

film

due

to

jamming.

When

a

film

jam

occurs,

the

film

will

fold

and

flow

out

through

the

kickplate

of

the

escape

mechanism

until

the

operator

has

had

an

opportunity

to

stop

the

projector.

To

thread

film

using

the

system,

refer

to

Figure

follows:

Step

1:

Check

the

leader

film)

for

defects.

damaged

or

torn,

film

trimmer

(1)

automatic

loading

A

and

proceed

as

(first

three

feet

of

If

the

film

end

is

insert

it

into

the

and

trim

the

end.

Loading

Operation

Step

2:

Push

the

auto

-load

lever

(2)

forward

until

it

locks.

(Note:

If

the

projector

being

threaded

is

equipped

with

the

still

feature,

place

the

run

-still

lever

in

the

"run"

position.)

Step

3:

Step

4:

Turn

the

main

switch

to

the

"forward

project"

position

(3).

Insert

the

leader

into

the

film

chan-

nel

under

roller

(4).

Push

the

leader

in

until

it

engages

the

sprocket

and

the

automatic

loading

system

begins

to

thread

the

film.

After

two

feet

of

leader

has

passed

through

the

pro-

jector,

pull

lightly

on

the

leader

end

until

a

"click"

is

heard

signaling

the

release

of

the

threading

mechanism.

Step

5:

Turn

the

main

switch

"off

."

Attach

the

leader

end

to

the

take-up

reel

and

rotate

the

reel

in

a

clockwise

direc-

tion

to

take

up

film

slack.

2

16mm

Sound

Projectors

Models

2585/2590/2592

4.

SPECIAL

MAINTENANCE

PRECAUTIONS.

Before

beginning

repairs,

check

specific

customer

complaints

against

the

trouble

shooting

charts

in

this

service

manual

for

the

most

probable

causes

and

suggested

remedies.

When

repairs

have

been

made,

be

sure

to

clean

and

lubricate

the

projector

before

it

is

returned

to

the

customer.

The

removal

and

installation

of

most

pro-

jector

components

can

be

accomplished

with

tools

normally

found

in

an

audio-visual

equip-

ment

repair

shop.

Although

most

wiring

connections

are

made

by

quick

disconnects,

a

soldering

gun

should

be

available

for

some

repairs.

Special

tools

and

gages

necessary

for

projector

alignments

and

adjustments

are

illustrated

and

listed

in

Figure

B

and

its

accompanying

chart.

The

setscrew

wrenches

and

test

films

are

listed

in

separate

charts

and

are

not

shown

in

Figure

B.

Keep

your

work

bench

clean

and

uncluttered.

As

parts

are

removed,

group

them

together

in

an

orderly

fashion

and

reassemble

attach-

ing

parts

loosely

to

the

parts

they

attach.

Note

or

tag

electrical

wires

or

connectors

so

that

they

can

be

properly

reconnected.

If

there

is

any

doubt

as

to

the

connection

of

leadwires,

refer

to

the

proper

wiring

diagram

at

the

rear

of

the

Parts

Catalog.

5.

CLEANING

INSTRUCTIONS.

Keep

film

path

areas

free

of

dirt

and

emul-

sion

build-up;

otherwise

film

jamming

may

occur

during

loading

operations

and

pro-

jection.

Use

isopropyl

alcohol

and

the

spe-

cial

cleaning

pad

(P/N

48478)

to

remove

hardened

emulsion,

and

be

careful

not

to

scratch

the

surfaces

that

contact

the

film.

Pay

particular

attention

to

the

sound

drum

and

the

soundhead

rollers.

Use

isopropyl

alcohol

to

clean

plastic

parts

and

be

careful

not

to

remove

lubricants

from

critical

areas,

especially

in

the

film

thread-

ing

linkage.

These

lubricants

are

applied

during

the

assembly

of

the

projector

and,

in

many

cases,

it

would

be

necessary

to

partially

disassemble

the

projector

to

re

-

lubricate

these

parts.

Blow

away

dust

and

film

chips

with

a

low-pressure

jet

of

com-

pressed

air

and

wipe

with

a

soft,

lint

-free

cloth.

If

the

projector

is

especially

dirty,

the

transport

mechanism

should

be

removed

from

the

mainplate

and

thoroughly

cleaned.

Brush

or

blow

out

all

accumulations

of

dirt

and

film

chips.

Wash

"Oilite"

bear-

ings

and

cams

with

naphtha.

If

cleaning

does

not

remove

old

lubricant

from

the

felt

wiper

and

wick,

these

items

should

be

replaced.

Clean

all

other

moving

parts

with

isopropyl

alcohol

and

dry

all

parts

with

a

low-pressure

jet

of

compressed

air.

As

soon

as

all

parts

have

been

cleaned

and

dried,

apply

a

light

film

of

the

specified

lubricants

and

reinstall

the

transport

mechanism.

6.

LUBRICATION

INSTRUCTIONS.

The

Lubrication

Chart

in

this

section

indi-

cates

those

parts

and

areas

requiring

lub-

rication.

These

are

also

pointed

out

in

the

Parts

Catalog

illustrations

by

means

of

ballooned

letters

"L"

(for

oil)

and

"G"

(for

grease).

Specified

lubricants

are

available

from

the

Bell

&

Howell

Company.

Be

sure

that

the

part

or

area

to

be

lubricated

is

clean

before

lubricant

is

applied,

and

be

careful

not

to

over

-lubricate.

A

drop

or

two

of

oil

or

a

very

light

film

of

grease

will

be

adequate.

Apply

grease

with

a

cam-

el's

hair

brush

and

wipe

away

excess

lub-

ricant

with

a

lint

-free

cloth.

Felt

pads

and

wicks

should

be

placed

in

a

shallow

pan

containing

the

specified

grease

and

allowed

to

stand

until

they

are

com-

pletely

saturated.

Wipe

away

excess

grease

before

installing

these

felt

parts.

7.

GENERAL

REPLACEMENT

DATA.

These

projectors

are

designed

for

easy

accessibility,

removal

and

replacement

of

most

major

components.

Routine

inspection,

trouble

shooting

and

lubrication

generally

can

be

accomplished

by

the

removal

of

the

front

cover,

the

rear

cover

and

the

two

covers

located

on

the

underside

of

the

base.

Most

of

the

wiring

connections

3

Service

Instructions

for

the

major

electrical

components

are

made

by

means

of

quick

disconnect

con-

nectors

or

screw

-on

wire

nuts,

thus

mini-

mizing

unsoldering

operations.

Wiring

con-

nections

and

leadwire

colors

are

indicated

in

the

wiring

diagrams

at

the

rear

of

the

Parts

Catalog.

The

front

cover

is

easily

removed

by

un-

latching

the

two

top

cover

latches

and

lifting

the

cover

from

the

projector.

The

rear

cover

is

secured

to

the

projector

base

with

three

screws

and

to

the

end

caps

with

two

screws

each

(see

Figure

C).

When

these

seven

screws

have

been

removed,

carefully

work

the

cover

free

from

the

projector

to

the

limit

of

the

interconnecting

leadwires.

The

covers

on

the

underside

of

the

base

are

secured

by

screws

and

can

be

removed

to

expose

the

amplifier

and

its

controls.

8.

FUSE

REPLACEMENT.

a.

Single

-Line

Voltage

Models.

The

ampli-

fier

power

input

circuit

and

the

audio

system

of

these

models

is

protected

by

a

Slo-Blo

fuse

located

adjacent

to

the

rotary

switch

on

the

gear

side

of

the

mainplate.

Remove

the

projector

rear

cover

(paragraph

11)

to

gain

access

to

this

fuse.

Additional

pro-

tection

is

provided

for

the

2585AML

units

by

two

Slo-Blo

fuses

mounted

on

the

top

cover

of

the

projector.

b.

Multi

-Line

Voltage

Models.

The

ampli-

fier

power

input

circuit

of

these

models

is

protected

by

a

Slo-Blo

fuse

located

adjacent

to

the

rotary

switch

on

the

gear

side

of

the

mainplate.

The

audio

system

of

these

models

is

protected

by

three

Slo-Blo

fuses

that

are

mounted

on

a

fuseboard/support

assembly

attached

to

the

power

transformer

assembly.

To

gain

access

to

all

fuses,

remove

the

rear

cover

as

instructed

in

paragraph

11.

NOTE:

Refer

to

the

appropriate

schematic

wiring

diagram

in

the

Parts

Catalog

for

correct

values

when

replacing

fuses.

c.

All

Models.

The

electrical

system

of

all

projectors

is

protected

against

acciden-

tal

overheating

by

a

special

thermal

fuse.

This

fuse

is

installed

on

the

bracket

located

just

above

the

drive

motor.

The

projector

rear

cover

must

be

removed

(paragraph

11)

and

the

wire

nuts

disconnected

from

the

fuse

leads

for

replacement.

9.

LAMP

REPLACEMENT.

a.

Projection

Lamp.

With

the

line

cord

disconnected

and

the

front

cover

removed,

swing

open

the

lamphouse

cover

an

d

press

in

on

the

top

of

the

lamp

retainer

spring

to

unlock

the

spring,

then

swing

the

spring

down

to

release

the

tension

on

the

projec-

tion

lamp.

Pull

the

lamp

straight

out

from

its

socket

(do

not

twist

or

wiggle

the

lamp

during

removal).

Assemble

the

new

lamp

into

the

socket

and

swing

the

lamp

retainer

spring

up

into

place.

Close

the

lamphouse

cover

and

replace

the

front

cover.

b.

Exciter

Lamp.

Disconnect

the

line

cord.

Loosen

the

thumbscrew

on

the

exciter

lamp

cover

and

remove

the

cover.

Rotate

the

lamp

release

ring

until

the

exciter

lamp

can

be

turned

and

lifted

from

the

lamp

socket

pins.

Install

the

new

lamp

in

the

lamp

socket.

Then

press

down

on

the

release

ring

and

rotate

to

close

the

ring.

Remove

fingerprints

from

the

lamp

with

lens

tissue

or

a

lint

-free

cloth

and

reinstall

the

covers.

4

Bell&Howell AUTOLOAD FILMOSOUND 2585 Manual de usuario

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