Bell&Howell 614CB Betriebsanleitung

Dieses Handbuch passt für folgende Modelle

3

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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

TABLE

OF

CONTENTS

Paragraph

INTRODUCTION

SPECIFICATION

DATA

DISASSEMBLY

PROCEDURE

Page

3

3

4

1.

Special

Tools

4

3.

Removal

of

Major

Components

4

11,

Feed

-Reel

--Arm

Assembly

5

-

Take-up

Reel

Arm

Assembly

5

13.

Switch

Plate

Assembly

5

14,

Sound

Head

-

614CB

Only

5

(Refer

to

para.

29

for

614CBM

and

CBRM

sound

head)

15.

Jockey

Roller

Assembly

6

16.

Impedance

Roller

Assembly

6

17,

Stabilizer

Housing

Assembly

6

18,

Universal

Drive

Motor

6

(Refer

to

para.

92

for

synchronous

motor

repair)

19.

Drive

Motor

Gear

Housing

7

20,

Blower

Motor

Assembly

7

21,

Rear

Mechanism

Plate

7

22.

Feed

and

Take-up

Pulleys

7

23,

Aperture

Plate

Assembly

7

24..

Lens

Holder

Assembly

7

25,

Lens

Mounting

Assembly

7

26,

Sprockets,

Sprocket

Guards

and_Gears

7

27,

Loopsetter

Adjusting

Assembly

-

8

28.

Shutter

and

Shuttle

Mechanism

8

29.

Sound

Head

-

614CBM

and

CBRM

8

30,

Projector

Case

9

31.

Amplifier

and

Speaker

9

CLEANING

AND

REPAIR

9

REASSEMBLY

PROCEDURE

10

35.

Feed

Reel

Arm

Assembly

10

36,

Take-up

Reel

Arm

Assembly

10

37,

Jockey

Roller

Assembly

10

38,

Impedance

Roller

Assembly'

10

39.

Stabilizer

Housing

Assembly

10

40,

Sound

Head

-

614

CB

only

11

(Refer

to

para.

51

for

614CBM

and

CBRM

sound

head)

41.

Drive

Motor

Gear

Housing

.

.. . . . . . . . . .

•

. . . . . .

12

42,

Universal

Drive

Motor

.,.

. .

-

. . . . .

.‘„

. . . . . .

•

•

12

(Refer

to

para.

92

for

synchronous

motor

repair)

43.

Blower

Motor

Assembly

12

44.

Rear

Mechanism

Plate

12

45,

Feed

and

Take-up

Pulleys,

13

46,

Aperture

Plate

Assembly

13

47,

Lens

Holder

Assembly

13

48,

Loopsetter

Adjusting

Assembly

13

49,

Sprockets,

Sprocket

Guards

and

Gears

13

50.

Shutter

and

Shuttle

Mechanism

S

14

51,

Sound

Head

-

614

CBM

and

CBRM

15

52.

Installation

of

Major

Components

16

63,

Adjusting

Shuttle

and

Aperture

Plate

Mounting

Bracket

...... .

18

64,

Adjusting

Film

Perforation

Clearance

19

65,

Synchronizing

Lower

Film

Sprockets

. . . . . . . . . . . . . . .

9

,

19

1

Paragraph

Page

66.

Film

Take-up

Tension

Adjustment

19

67.

Loopsetter

Adjusting

Assembly

Adjustment

20

TEST

PROCEDURE

21

68.

Localizing

Common

Sound

Troubles

21

72.

Amplifier

Trouble

Analysis

23

79.

Localizing

Loudspeaker

Troubles

24

80.

Projector

Set

Characteristics

Tests

24

81.

Sound

Optical

System

Alinement

Tests

24

87.

Checking

Photocell

Output

26

Table

I.

Projector

Circuit

Voltages

27

Table

II.

Tube

and

Output

Transformer

Measurements

27

Table

HI.

Amplifier

Trouble

Analysis

Chart

29

Table

IV.

D

-C

Supply

Voltage

-Drop

Measurements

32

Table

V.

D

-C

Resistance

Measurements

32

Table

VI.

A

-C

Voltage

Measurements

32

Table

VII.

Projector

Characteristics

Tests

33

Table

VIII.

Amplifier

Characteristics

Tests

36

Table

IX.

Loudspeaker

Characteristics

Tests

38

TROUBLE

SHOOTING

CHART

46

AUTHORIZED

MODIFICATION

KITS

55

88.

Installing

Hour

Counter

Kit

55

89.

Counter

Drive

Mechanism

Repair

55

90.

Installing

48

-Frequency

Shutter

Kit

56

91.

Converting

from

Universal

to

Synchronous

Drive

Motor

56

92.

Synchronous

Drive

Motor

Repair

57

DESIGN

614CD

MAINTENANCE

58

***

.

P

tttittts

•4

4.4

.4•

fttte

(

Figure

1.

Design

614

CB

Projector

—

Overall

View

2

This

manual

has

been

prepared

to

aid

in

serv-

icing

the

Bell

&

Howell

Design

614

16

-mm

Projector.

Complete

instructions

for

the

disassembly,

cleaning,

repair,

reassembly

and

adjustment

of

the

projector

are

given

in

a

step-by-step

fashion.

An

illustrated

parts

catalog

section

is

included

at

the

rear

of

the

manual

to

identify

replacement

parts

for

ordering

purposes.

The

exploded

view

illustrations

in

the

parts

catalog

section

have

been

indexed

in

order

of

disassembly.

The

serviceman

must

use

his

own

judgment

in

eli-

minating

unnecessary

steps

of

disassembly

when

making

certain

definite

repairs.

Four

models

of

the

projector

are

covered

in

this

book

—

614CB,

614CBM,

614CBRM

and

614CD.

The

614CD

is

a

commercial

version

of

the

projector

pre-

sently

being

supplied

to

the

Armed

Forces.

Although

all

four

projectors

are

very

similar

in

design

and

construction,

the

614CD

is

outwardly

distinguished

by

its

twin

line

'fuses

(top

front

of

projector

case),

fabric

drive

belts

with

adjustable

tension

rollers,

lifetime

lubrication

system

and

newly

designed

case

legs.

Except

when

specifically

noted,

the

general

repair.

instructions

contained

herein

will

apply

to

all

four

models,

with

minor

differences

illustrated

in

the

Parts

Catalog

exploded

views

by

means

of

insets.

Wiring

schematics

and

the

more

complicated

repairs

and

ad-

justments

which

are

applicable

only

to

the

614CD

will

be

found

in

the

addendum

beginning

on

page

58.

The

quality

of

service

work

performed

will

de-

pend,

to

a

large

extent,

upon

the

ability

and

in-

genuity

of

the

serviceman.

Be

sure

to

use

the

proper

tools

during

actual

disassembly

and

reassembly

pro-

cedures,

and

be

careful

not

to

scratch

or

mar

the

equipment.

During

disassembly

of

the

equipment,

observe

and

remember

the

manner

in

which

each

part

is

installed.

When

a

part

has

been

removed,

reinstall

its

attaching

screws

into

their

tapped

holes

to

prevent

loss

and

mix-up.

Take

particular

care

when

reassembling

the

pro-

jector.

The

customer

expects

his

equipment

to

look

and

operate

like

new

when

it

is

returned.

Touch

up

marred

surfaces

with

matching

paint

(B

-H

SPEC

No.

1148).

LUBRIC

ANTS.

Due

to

the

nature

of

the

design

of

these

pro-

jectors,

it

is

imperative

that

only

the

following

lubricants

be

used:

Oil

—

Bell

&

Howell

Stock

No.

611753

Grease

—

Standard

Oil

"Stanolith

No.

42"

Internal

lubrication

for

the

614CB,

614CBM

and

614CBRM

projectors

is

supplied

through

a

one

-point

feed

lubrication

system.

Oil

is

applied

to

the

central

oil

well

cup

on

top

of

the

projector

case

and

is

fed

through

oil

tubing

to

all

bearings

and

to

the

inter-

mittent

mechanism

reservoir.

In

614CD

projectors,

the

oil

well

cup

and

tubing

have

been

removed.

A

felt

pad

below

the

shutter

and

shuttle

camshafts

is

satura-

ted

with

oil

and

feeds

all

parts

of

the

intermittent

mechanism

through

a

system

of

felt

wicks.

Refer

to

the

addendum

sheets

beginning

on

page

58

for

wick

re-

placement.

CAUTION:

Before

returning

a

repaired

614CB,

614CBM

or

614CBRM

projector

to

customer,

be

sure

to

fill

the

oil

well

cup

with

4

cc

of

oil

and

caution

customer

to

check

oil

level

before

operation.

SPECIFICATION

DATA

Film

size

16

-mm

Film

reel

capacity

2000

ft.

Film

speed

(CB

and

CBM)

16

and

24

fps

Film

speed

(CBRM

and

CD)

24

fps

Power

supply

105-129

volts,

50-60

cycles

Power

consumption

1300

watts

Projector

lamp

(25

hr.

life)

. . .

1000

watt,

115

-volt

Exciter

lamp

6

-volt,

1

-amp

Threading,

lamp

120

-volt,

6

-watt

Photocell

(614CB,

CBM,

CBRM)

. .

Lead

sulphide

Photocell

(614CD)

germanium

diode

Projector

fuse

(1

req'd)

15

amp

Amplifier

fuse(2

req'd

for

614CD)0.8

amp,

slow

-blow

Drive

motor

(CB,

CBM,

and

CD)

. .

universal

type

with

centrifugal

governor

Drive

motor

(CBRM)

synchronous

type

Ventilation

24

-blade,

motor

driven,

3

in.

diam.

rotor

Amplifier

input

Power

output

Sound

head

output

Tube

complement

0.4

volts

8

watts

high

impedance

(projector

amplifier):

(2)

12AX7,

(2)

6x4,

and

(3)

6AQ5

Tube

complement

(record

amplifier):

(2)

12AX7,

(1)

6x4,

(3)

12AU7

Overall

dimensions,

complete

projector:

14-1/2

in.

high,

12-1/8

in.

wide,

16-1/4

in.

long

Approxithate

weight

48

lbs.

3

naiddeApteev

Am

-acne

1.

SPECIAL

TOOLS.

The

special

tools

illustrated

in

figure

2

are

re-

quired

to

perform

the

overhaul

procedures

outlined

in

this

handbook.

Refer

to

the

key

to

figure

2

for

proper

part

number

and

nomenclature

of

tools.

2.

GENERAL

OVERHAUL

INSTRUCTIONS.

The

following

procedures

provide

for

the

com-

plete

disassembly

of

the

projector,

with

each

of

its

major

components

treated

separately.

Before

per-

forming

all

of

the

steps

in

the

disassembly

sequence,

first

attempt

to

localize

the

trouble

by

analyzing

the

customer's

report

with

reference

to

the

trouble

shoot-

ing

chart,

the

amplifier

trouble

analysis

chart

(Table

III)

and

the

equipment

characteristics

tests

(Tables

VII,

VIII

and

DC):

If

a

complete

overhaul

of

equipment

is

indicated,

perform

the

operations

specified

in

the

following

paragraphs.

Refer

to

the

exploded

views

for

disassembly

of

miscellaneous

parts.

3.

REMOVAL

OF

MAJOR

COMPONENTS.

NOTE:

Refer

to

the

projector

operation

book

for

in-

structions

pertinent

to

the

removal

of

such

items

as

the

reel

arms,

pressure

plate,

aperture

plate,

con-

denser

lens

assembly,

projection

lamp

parts,

etc.

4.

AMPLIFIER

AND

SPEAKER

ASSEMBLY.

(See

Parts

Catalog

figure

1.)

The

amplifier

housing

is

secured

to

the

projector

case

by

six

screws

(23)

and

lock

washers

(24)

located

at

the

top,,

front

and

bottom

of

the

case

and

three

screws

(25)

and

lock

washers

(26)

which

also

serve

to

fasten

one

edge

of

the

switch

plate

(30)

to

the

amplifier

case.

Remove

these

screws

and

carefully

pull

the

amplifier

away

from

the

pro-

jector

case

until

the

leadwires

are

exposed.

Dis-

connect

leadwires

as

required,

and

separate

the

amplifier

assembly

from

the

projector

case.

5.

SWITCH

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

1.)

Remove

screws

(28),

lock

washers

(29)

and

junction

box

front

plate

(27).

Remove

screws

(33

and

34),

elastic

cam

lock

stop

nuts

(35)

and

cable

clamp

(36)

to

free

junction

box.

Unsolder

fuseholder

and

re-

ceptacle

leadwires

within

the

junction

box.

Note

wiring

harness

connections

to

various

projector

corn-

,

ponents.

Two

small,

shielded

wires

from

sound

head

assembly

must

be

disconnected

at

the

OFF

-MOTOR

-

LAMP

switch

and

unwound

from

harness.

The

ground

terminal

at

one

end

of

large,

shielded

harness

is

fastened

to

mechanism

plate

just

behind

projection

lamp

socket.

Two

leadwires

must

be

disconnected

from

the

lampholder

behind

the

junction

box.

The

5-061081-N15

■

e

5-061000-F1

o

S

-061081-N8

5-063196-N2

S

-061081-N31

5-061081-N16

e

e

-5-061082-N1

S

-061081-N6

S

-061020-N3

43.

-S-061020-N10

SURFACE

PLATE

(NOT

SUPPLIED)

Part

No.

Description

-,_Part

No.

Description

S

-061000-F1

Sound

optical

tool

S

-061081-N31

Sprocket

synchronizing

gage

S

-061020-N10

Master

block

and

plate

S

-061081-N6

Shuttle

alinement

gage

S

-061020-N3

Front

cam

shaft

indicator

gage

S

-061081-N8

Shutter

protrusion

gage

S

-061081-N15

Shutter

and

intermittent

gage

S

-061082-N1

Sound

drum

positioning

gage

S

-061081-N16

Sprocket

film

clearance

gage

S

-063196-N2

Aperture

guide

rail

gage

Figure

2.

Special

Service

Tools

Required.

4

lb;

two

blower

motor

leadwires

must

be

disconnected

at

the

OFF

-MOTOR

-LAMP

switch.

Remove

three

switch

plate

screws

(31)

and

lock

washers

(32),

and

carefully

lift

complete

switch

plate

assembly

(30),

with

wiring

harness,

from

projector.

6.

FRONT

AND

REAR

MECHANISM

PLATE.

(See

Parts

Catalog

figure

2.)

a.

Loosen

special

hex

nut

(13)

and

remove

loopsetter

knob

(14)

from

loopsetter

rod.

b.

Remove

flywheel

retaining

screw

(8)

and

care-

fully

remove

flywheel

(7)

from

stabilizer

shaft.

c.

Check

all

leadwires

and

cables,

loosening

any

cable

clamps

or

freeing

any

leadwire

terminals

that

might

prevent

removal

of

the

mechanism

plate.

d.

Remove

two

binding

head

screws

(16)

and

lock

washers

(17)

and

two

hex

head

screws

(26),

lock

washers

(27)

and

flat

washers

(28)

that

secure

the

mechanism

plate

at

the

four

vibration

mounts.

e.

Remove

mechanism

plate

(15)

through

the

door

side

of

the

projector

—not

through

the

amplifier

opening.

7.

DRIVE

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

6.)

Loosen

set

screw

(14)

and

remove

threading

knob

(13).

Loosen

the

two

screws

in

the

idler

roller

bracket

at

the

top

of

the

drive

motor,

and

shift

bracket

to

the

right

to

remove

tension

from

drive

chain

(24).

Disengage

chain

from

sprocket

above

motor.

Remove

four

screws

(21),

lock

washers

(22)

and

plain

washers

(23),

supporting

the

drive

motor

to

prevent

it

from

falling.

Carefully

remove

drive

motor,

disengaging

drive

chain

from

flexible

drive

coupling.

8.

FEED

AND

TAKE-UP

PULLEY

ASSEMBLIES.

(See

Parts

Catalog

figure

16.)

Loosen

two

screws

(29)

so

that

idler

assembly

(28)

can

be

shifted

to

the

right,

thereby

removingtension

from

drive

chain

(19).

Slip

drive

chain

from

sprockets

(17,

20

and

24).

Loosen

set

screws

(21

and

25),

and

remove

sprockets

(20

and

24),

pulleys

(22

and

26)

and

thrust

washers

(23

and

27)

from

mechanism

plate.

9.

LENS

HOLDER

ASSEMBLY.

(See

Parts

Catalog

figure

16.)

Remove

two

screws

(43),

lock

washers

(44)

and

the

lens

holder

stop

plate

(42).

Slowly

rack

the

lens

holder

assembly

(45)

forward

by

turning

the

knurled

focusing

knob

on

the

lens

mounting

assembly

(49)

until

the

lens

holder

assembly

is

free.

Be

careful

not

to

lose

the

friction

button

(46)

and

friction

spring

(47)

located

in

a

recess

in

the

mounting

assembly.

10.

LENS

MOUNTING

ASSEMBLY.

(See

Parts

Cata-

log

figure

16.)

Remove

three

screws

(50

and

51)

and

one

lock

washer

(52)

and

lift

the

lens

mounting

as-

sembly

(49)

from

the

mechanism

plate.

Invert

mount-

ing

assembly

and

permit

guide

disc

(48)

to

drop

into

hand.

11.

FEED

REEL

ARM

ASSEMBLY.

(See

Parts

Catalog

figure

3.)

a.

Remove

nuts

(3

and

4)

and

spring

(5).

b.

Tap

out

the

driving

pin

(6)

and

remove

spindle

clutch

assembly

(7),

clutch

plate

subassembly

(8),

and

thrust

washer

(10).

If

necessary,

press

ball

bearing

(9)

from

clutch

plate

subassembly.

c.

Remove

spindle

assembly

(2),

spindle

pulley

(11)

and

friction

washer

(12)

from

arm

(15).

If

necessary,

press

thrust

bearings

(14)

from

arm.

d.

Inspect

parts

for

actual

physical

damage.

Press

bearings

onto

wooden

dowels

of

snug

fit

and

spin

the

bearing,

noting

any

roughness

in

rotation

which

would

indicate

bearing

balls

or

rollers

with

flat

spots.

Replace

damaged

parts.

12.

TAKE-UP

REEL

ARM

ASSEMBLY.

(See

Parts

Catalog

figure

4.)

a.

Remove

elastic

stop

nut

(3),

tension

nut

(4)

and

tension

spring

(5).

b.

Tap

out

driving

pin

(6)

and

disassemble

remaining

parts

from

take-up

arm

(14).

c.

Inspect

parts

for

actual

physical

damage.

Press

the

bearings

onto

wooden

dowels

of

snug

fit

and

spin

the

bearing,

noting

any

roughness

in

rotation

which

would

indicate

bearing

balls

or

rollers

with

flat

spots.

Replace

all

damaged

parts.

13.

SWITCH

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

5.)

Under

normal

circumstances,

complete

disas-

sembly

of

the

switch

panel

will

not

be

necessary.

Re-

moval

of

parts

for

replacement

can

be

accomplished

by

reference

to

Parts

Catalog

figure

5.

14.

SOUND

HEAD

ASSEMBLY-614CB

ONLY.

(See

Parts

Catalog

figure

7.)

NOTE:

Refer

to

paragraph

29

for

disassembly

of

sound

head

for

614CBM

and

CBRM

projectors.

a.

Remove

retaining

rings

(3)

and

washers

(4)

and

pull

roller

assemblies

(1

and

2)

from

pivot

studs

(5).

Refer

to

paragraph

15

for

repair

instructions

for

these

roller

assemblies.

b.

Remove

screw

(8)

and

impedance

roller

assembly

(7).

Refer

to

paragraph

16

for

impedance

roller

re-

pair

instructions.

c.

Loosen

set

screws

(10

and

11)

and

carefully

with-

draw

stabilizer

housing

assembly

(9).

Refer

to

para-

graph

17

for

repair

instructions

for

housing

assembly.

d.

Loosen

cover

screw

(13)

and

remove

lamp

cover

assembly

(12).

Move

pin

release

cam

(18)

to

extreme

right-hand

position,

and

lift

out

the

exciter

lamp

(16).

Lamp

socket

parts

can

be

disassembled

by

removing

lamp

socket

nut

(17),

screw

(20)

and

lock

washer

(21),

and

three

flat

head

screws

(23).

CAUTION

The

scanning

lens

(24)

is

pre-set

by

means

of

precision

instruments

for

maximum

efficiency

and

should

not

be

disturbed

-

unless

it

has

been

determined

that

this

item

requires

replace-

ment.

If

such

is

the

case,

remove

screw

(25)

and

withdraw

the

lens.

e.

Loosen

knob

on

photocell

cover

assembly

(26)

and

lift

off

the

cover.

To

remove

photocell

assembly

5

(37),

take

out

screws

(38)

and

lock

washers

(39)

and

disconnect

cell

leadwire

lugs

from

terminal

block

(30).

f.

Remove

screws

(31

and

34)

and

lock

washers

(32)

to

free

terminal

block

(30).

Note

spacing

collar

(33)

between

terminal

block

and

casting

and

hexagonal

spacer

nut

(35)

at

front

of

terminal

block.

Disas-

semble

remaining

parts

as

required.

g.

Replace

all

damaged

parts.

Photocell

assembly

replacement

is

determined

by

analyzing

the

accom-

panying

customer

report

for

the

projector

and

by

pre-

testing

the

equipment

as

instructed

in

the

Test

Pro-

cedure

section,

page

21.

15.

JOCKEY

ROLLER

ASSEMBLY.

(See

Parts

Catalog

figures

8

and

9).

NOTE:

Both

the

upper

jockey

roller

assembly

and

lower

jockey

roller

assembly

are

covered

by

the

following

instructions.

Except

for

the

difference

in

roller

housings,

both

assemblies

are

identical

in

construction.

a.

Loosen

set

screw

(2)

and

pull

out

roller

shaft

(3),

thus

freeing

all

parts

of

assembly.

Do

not

press

bearings

(1

and

4)

from

housing

(6)

unless

damaged.

b.

Inspect

roller

for

deep

scratches,

nicks

or

flat

spots.

Inspect

shaft

for

bends

and

make

certain

that

shaft

bearing

surfaces

are

not

rough.

Check

housing

for

rough

spots

which

might

interfere

with

free

ro-

tation

of

roller.

16.

IMPEDANCE

ROLLER

ASSEMBLY.

(See

Parts

Catalog

figure

10.)

a.

Loosen

set

screws

(1

and

2)

and

unscrew

the

ad-

justable

pivot

pin

(4).

The

slug

(3)

will

drop

into

the

housing

(12)

as

pivot

pin

is

withdrawn.

Remove

plain

pivot

pin

(5)

and

li

ft

roller

(6)

from

housing.

b.

Disassemble

parts

(7)

through

(11)

from

hous-

ing

(12).

c.

Inspect

pivot

pins

(4

and

5)

to

make

certain

that

tapered

ends

are

not

blunted

or

distorted.

Check

spring

for

broken

ends.

Make

certain

that

bearings

in

roller

are

free

of

dirt,

dust

or

other

foreign

sub-

stance.

Inspect

roller

for

deep

scratches,

nicks

or

flat

spots.

17.

STABILIZER

HOUSING

ASSEMBLY-

CB,

CBM,

and

CBRM

only.

(See

Parts

Catalog

figure

11.)

CAUTION

Unless

the

tools

mentioned

in

paragraph

39,

step

g,

are

available,

do

not

attempt

to

dis-

assemble

the

film

scanning

drum

(2)

and

shaft

(14)

from

the

stabilizer

housing.

a.

Hold

lock

nut

(10)

with

wrench

and

carefully

remove

sound

drum

nut

(1).

Pull

film

scanning

drum

(2)

from

shaft

(14).

b.

Remove

screws

(6)

and

carefully

lift

brackets

(5),

prism

mount

(8)

and

light

pipe

prism

(7)

from

housing

(15).

Lift

the

prism

gently

from

the

mount.

c.

Remove

screws

(12)

and

pull

assembled

shaft

(14)

from

housing.

Place

wrench

on

flats

of

shaft,

unscrew

self

locking

nut

(9).

Unscrew

lock

nut

(10)

and

remove

lock

plate

(11)

and

bearing

(13)

from

shaft.

Remove

bearing

(3)

and

thrust

washer

(4)

from

housing.

CAUTION

Avoid

placing

fingers

on

ball

races

of

bearing

during

removal,

and

do

not

use

any

tool

that

might

cause

damage

to

bearing.

After

removal,

wrap

bearing

in

clean

cloth

or

tin

foil.

d.

Prism

should

be

wiped

with

soft

lint

-free

cloth.

Inspect

prism

for

chips,

scratches

or

discolora-

tion.

Inspect

film

scanning

drum

for

nicks

or

grooves.

Make

certain

that

stabilizer

shaft

is

not

bent

in

any

way.

Check

ball

bearing

rotation;

bearings

should

ro-

tate

freely

and

smoothly.

18.

UNIVERSAL

DRIVE

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

12.)

NOTE:

Refer

to

paragraph

92

for

synchronous

mo-

tor

repair.

a.

Remove

resistor

and

mounting

bracket

parts

(items

1

through

7)

and'

capacitors

(8

and

30)

from

motor

housing,

unsoldering

leadwires

as

required.

b.

In

order

to

remove

motor

gear

housing

assembly

(11),

it

first

will

be

necessary

to

remove

the

flexible

coupling

from

the

gear

housing

shaft.

This

can

be

done

by

loosening

the

coupling

set

screw

closest

to

the

end

of

the

shaft

and

sliding

off

the

coupling

with

attached

chain

sprocket.

Take

out

three

screws

(12

and

14)

and

lock

washers

(13

and

15)

and

withdraw

the

com-

plete

gear

housing.

Temporarily

assemble

coupling

to

shaft

and

set

this

assembly

aside.

Repair

instruc-

tions

for

the

gear

housing

assembly

are

outlined

in

paragraphs

19

and

41.

c.

Disassemble

motor

mounting

bracket

and

parts

(items

16

through

25).

d.

Remove

brush

holder

caps

(26)

and

brush

and

springs

assemblies

(27).

Brush

holders

(29)_need

not

be

removed.

e.

Loosen

two

set

screws

(34),

and

remove

governor

(33)

and

governor

brush

and

spring

assemblies

(35).

Brush

holders

(37)

need

not

be

removed.

f.

Remove

bracket

(41)

and

capacitor

(38),

unsolder-

ing

capacitor

leads

as

required.

g.

Drive

out

pin

(45)

and

remove

drive

gear

(46).

Remove

rear

housing

(42)

and

armature

(49).

Be

care-

ful

not

to

lose

the

two

bearing

loading

springs

(50)

from

end

of

armature

shaft.

h.

Disassemble

motor

field

(52)

from

housing

(55).

These

parts

are

machined

in

assembly

and

must

be

replaced

as

an

assembly.

i.

Inspect

bearings

to

make

certain

that

they

spin

freely

and

smoothly

and

that

they

seat

properly

in

the,

bearing

recesses

of

the

housing.

Bearings

must

not

be

loose

in

bearing

recess.

j.

Check

field

coils

for

continuity

with

an

ohmmeter.

k.

Check

armature

for

short

circuit

on

a

growler.

Inspect

armature

winding

for

signs

of

burning,

char-

ring,

or

serious

nicks

and

breaks.

Examine

com-

mutator

for

excessive

wear

or

badly

burned

commuta-

tor

bars.

1.

Inspect

motor

brushes

for

excessive

wear

(shorter

6

than

3/8

-inch)

and

broken

pigtails

and

springs.

In-

spect

governor

brushes

for

excessive

wear

(shorter

than

3/16

-inch)

and

broken

pigtails

and

springs.

m.

Check

slip

rings

on

back

of

governor

for

indication

of

a

permanent

open

or

short.

Resistance

on

volt

-

ohmmeter

should

read

"zero"

with

governor

contacts

closed;

resistance

should

be

infinite

with

contacts

held

open.

n.

Check

capacitors

with

electronic

multimeter

for

leaks

and

shorts.

Check

resistor

with

voltohmmeter

for

proper

resistance

(150

ohms

on

CB

projectors;

75

ohms

on

CBM

projectors).

19.

DRIVE

MOTOR

GEAR

HOUSING

ASSEMBLY.

(See

Parts

Catalog

figure

13.)

a.

Loosen

set

screw

in

flexible

drive

coupling

(1)

to

free

the

sprocket

(2).

b.

Disassemble

remaining

parts

from

housing

(8).

20.

BLOWER

MOTOR

ASSEMBLY.

(See

Parts

Catalog

figure

14.)

a.

Disassemble

the

blower

motor

as

shown

in

ex-

ploded

view.

Be

careful

not

to

lose

the

bearing

load-

ing

spring

(12)

at

the

commutator

end

of

the

arma-

ture

(10).

b.

Inspect

motor

brushes

for

broken

springs

or

ex-

cessive

wear

(shorter

than

1/4

-inch

in

length).

c.

Check

field

coils

for

continuity.

d.

Inspect

winding

of

armature

for

signs

of

burning,

charring,

serious

nicks

or

breaks.

Examine

com-

mutator

for

out

-of

-round,

excessive

wear

or

burned

spots.

e.

Spin

the

ball

bearings

and

check

for

smooth,

quiet

rotation.

f.

Inspect

blower

wheel

for

bent

or

broken

blades.

g.

Check

capacitor

(250

volt)

with

ohmmeter

for

leaks

or

shorts.

21.

REAR

MECHANISM

PLATE.

(See

Parts

Catalog

figure

15.)

a.

Disassemble

the

rear

mechanism

plate,

as

re-

quired,

by

reference

to

the

exploded

view.

b.

Remove

dust

and

dirt

from

reflector

by

blowing

air

across

the

surface

with

a

syringe

bulb.

Remove

stains

with

cleaning

tissue.

If

necessary,

use

a

drop

or

two

of

denatured

alcohol

to

remove

oil

film

or

fingerprints.

22.

FEED

AND

TAKE-UP

PULLEYS

-

CB,

CBM

and

CBRM

only.

(See

Parts

Catalog

figure

20.)

a.

Disassemble

the

feed

and

take-up

pulleys,

being

careful

not

to

lose

the

bearing

balls

(4).

b.

Inspect

ears

of

pulley

ratchet

for

excessive

wear.

Check

bearing

for

smooth,

free

rotation.

Inspect

shaft

for

distortion

or

excess

wear.

c.

If

shaft

is

worn

to

less

than

0.247

inch

in

dia-

meter,

replace

shaft.

23.

APERTURE

PLATE

ASSEMBLY.

(See

Parts

Catalog

figure

23.)

a.

Remove

screws

(2)

and

film

rail

(1).

b.

Remove

screws

(4),

film

floating

rail

(3)

and

bracket

spring

(5).

Washers

(6)

will

drop

free

when

rail

(3)

is

removed.

c.

Inspect

sapphire

jewel

insets

in

rails

for

chip-

ping.

Inspect

aperture

plate

subassembly

for

ex-

cessive

wear

at

the

plate

rails.

24.

LENS

HOLDER

ASSEMBLY.

(See

Parts

Catalog

figure

24.)

a.

Disassemble

as

shown

in

exploded

view.

b.

Inspect

fiber

button

on

end

of

lens

lock

screw

for

good

condition.

c.

Inspect

gear

rack

for

broken

teeth.

d.

Check

machined

mounting

surface

of

lens

holder

for

wear

and

rough

spots.

25.

LENS

MOUNTING

ASSEMBLY.

(See

Parts

Catalog

figure

25.)

a.

Disassemble

by

following

the

sequence

outlined

in

figure

25.

b.

Inspect

focusing

pinion

(15)

for

chipped

or

broken

teeth.

c.

Inspect

sliding

track

of

lens

holder

mounting

(23)

for

rough

spots.

26.

SPROCKETS,

SPROCKET

GUARDS

AND

GEARS.

(See

Parts

Catalog

figure

17.)

NOTE:

The

following

procedure

outlines

the

dis-

assembly

of

only

such

parts

as

require

special

in-

structions.

For

purely

mechanical

disassembly

pro-

cedures,

refer

to

Parts

Catalog

figure

17.

a.

Remove

screws

(2

and

3)

and

lock

washers

(4)

and

lift

off

gear

cover

(1)

to

expose

gears.

b.

Remove

retaining

ring

(7)

and

spacer

(8)

and

pull

double

idler

gear

(6)

from

gear

stud

(9).

Remove

re-

taining

ring

(11)

and

pull

single

idler

gear

(10)

from

gear

stud

(12).

Pull

sleeve

(13)

from

shaft

of

gear

(17).

c.

To

remove

sprockets

(14),

loosen

set

screws

(15)

and

pull

sprockets

and

fiber

washers

(16)

from

gear

shafts.

Withdraw

gears

(17,

18

and

19)

from

rear

of

mechanism

plate.

Be

careful

not

to

lose

film

stops

(20).

d.

Film

strippers

(21)

and

sprocket

guards

(24)

can

be

removed

by

taking

out

attaching

parts

(22

and

23)

and

(25

and

26),

respectively.

If

necessary,

disassem-

ble

sprocket

guards

(items

27

through

31)

as

shown

in

illustration.

e.

Unhook

spring

(34)

from

rear

arm

(36),

loosen

set

screw

(37)

and

disassemble

rear

arm

and

loop

-

setter

assembly

(38)

from

mechanism

plate.

f.

Remove

three

screws

(40)

and

lock

washers

(41)

at

rear

of

mechanism

plate

and

lift

off

film

slack

adjusting

assembly

(39).

Refer

to

paragraph

27

for

repair

instructions.

g.

Removal

of

remaining

parts

is

purely

mechanical

and

can

be

accomplished

by

reference

to

Parts

Catalog

figure

17.

h.

Inspect

gears

and

sprockets

for

chipped

or

broken

teeth.

i.

Examine

film

contacting

surfaces

of

sprockets

and

rollers

for

grooves,

deep

scratches,

nicks

and

rough

or

flat

spots.

j.

Inspect

film

contacting

surfaces

of

sprocket

guards

7

and

film

strippers

for

rough

spots.

k.

Examine

all

springs

for

breaks

in

coils.

1.

Inspect

grooves

of

pivot

bracket

(31),

in

which

the

point

of

the

locking

rod

(29)

rides,

for

excessive

wear

and

breaks.

Inspect

point

of

locking

rod

for

excessive

bluntness

due

to

wear.

27.

LOOPSETTER

ADJUSTING

ASSEMBLY.

(See

Parts

Catalog

figure

17.)

a.

Remove

screw

(44),

loosen

set

screw

(43),

and

disassemble

all

parts

(45

through

49)

from

housing

(50).

b.

Inspect

adjusting

collar

for

broken

teeth

and

small

end

of

stop

pin

for

excessive

wear.

Check

springsfor

broken

coils.

c.

If

pin

end

of

stop

pin

(46)

is

rounded

excessively

or

broken,

replace

both

pin

and

adjusting

collar.

Replace

other

parts

which

are

damaged.

If

pin

(51)

is

broken

off,

replace

adjusting

rod

and

pin

(48).

28.

SHUTTER

AND

SHUTTLE

MECHANISM.

(See

Parts

Catalog

figure

18.)

a.

Loosen

set

screws

(2)

and

remove

framer

knob

Remove

screws

(4),

lock

washers

(5)

and

shutter

cover

assembly

(3).

If

shutter

cover

requires

repairs,

refer

to

Parts

Catalog

figure

26

for

disassembly

pro-

cedure.

b.

Remove

screws

(7

and

7A)

and

lock

washers

(8)

and

lift

off

the

cover

(6).

Disengage

spring

(9).

Dis-

assemble

items

(10)

through

(23)

from

mechanism

plate.

Note

that

parts

(17)

through

(23)

are

furnished

as

a

complete

kit

and

must

be

replaced

as

a

complete

kit

if

any

one

part

is

damaged.

c.

Loosen

set

screw

(25)

and

remove

sprocket

(24).

Remove

screws

(27),

lock

washers

(28)

and

bracket

(26).

Remove

screws

(30)

and

lock

washer

(31)

and

disassemble

parts

(29), (32),

(33),

(34)

and

(35)

from

mechanism

plate.

Tie

the

shims

(33)

and

(35)

in

groups

and

mark

them

so

the

same

quantity

can

be

installed

during

reassembly.

d.

Loosen

two

set

screws

(37)

and

disassemble

gear

(36)

and

rear

camshaft

(38)

from

mechanism

plate.

Press

drive

shaft

(46)

from

mechanism

plate,

and

disassemble

thrust

collar

(41),

hub

washer

(45)

and

drive

gear

(43)

from

shaft.

Remove

screws

(40)

and

plate

(39).

e.

Loosen

set

screw

(48)

and

remove

shutter

gear

(47)

and

shutter

assembly

(49)

from

mechanism

plate.

Disassemble

shutter

only

if

necessary

for

parts

replacement.

f.

Loosen

set

screws

(51)

in

locking

collar

(50).

Remove

three

screws

(53)

and

lock

washers

(54)

and

withdraw

bracket

(52)

and

collar

(50)

from

shaft

(59).

Remove

screw

(56),

spring

washer

(57)

and

friction

washer

(58)

to

free

the

pivot

bar

(55).

Un-

screw

shaft

(59)

from

pivot

bar.

g.

Remaining

disassembly

can

be

accomplished

by

reference

to

Parts

Catalog

figure

18.

h.

Inspect

all

parts

for

unusual

wear

or

damage.

The

shuttle

kit

parts

should

be

examined

very

closely

for

wear.

Clean

oiling

system

thoroughly.

i.

Check

gears

for

chipped

or

broken

teeth.

j.

Make

certain

that

shutter

blades

are

not

bent.

k.

Check

camshafts

to

see

if

they

are

bent

or

otherwise

distorted.

NOTE:

Refer

to

the

addendum

material

beginning

on

page

58

for

614CD

lubrication

system

maintenance.

CAUTION

MECHANISM

PLATE

BEARINGS

(Parts

Cata-

log

figure

27)

should

not

be

removed

for

re-

placement.

Figure

27

is

included

only

for

factory

parts

identification.

Special

equip-

ment

is

required

to

press

in,

broach

and

align

the

mechanism

plate

bearings,

and

these

bear-

ings

will

not

be

supplied

separately

to

service

stations.

When

bearings

are

worn

to

a

point

requiring

replacement,

the

complete

mech-

anism

plate

assembly

(Part

No.

061156)

must

be

replaced.

29.

SOUND

HEAD

ASSEMBLY-614CBM

AND

CBRM.

(See

Parts

Catalog

figure

37.)

a.

Remove

retaining

rings

(1)

and

flat

washers

(2)

and

pull

the

jockey

roller

assemblies

(3

and

4)

from

the

jockey

pivot

studs

(5).

Refer

to

paragraph

15

for

roller

assembly

repair.

b.

Remove

screw

(7)

and

impedance

roller

assembly

(8).

Refer

to

paragraph

16

for

impedance

roller

as-

sembly

repair

instructions.

c.

Loosen

set

screws

(9

and

10)

and

carefully

with-

draw

stabilizer

housing

assembly

(11).

Refer

to

para-

graph

17

for

stabilizer

housing

repair.

d.

Loosen

cover

screw

(12A)

and

remove

lamp

cover

assembly

(12).

Move

release

cam

(15)

to

extreme

right-hand

position,

and

lift

out

exciter

lamp

(13).

Lamp

socket

parts

can

be

disassembled

by

removing

lamp

socket

nut

(14),

screw

(16),

lock

washer

(17)

and

three

flat

head

screws

(19).

CAUTION

The

scanning

lens

(24)

is

pre-set

by

means

of

precision

instruments

for

maximum

efficiency

and

should

not

be

disturbed

unless

it

has

been

determined

that

this

item

requires

replace-

ment.

If

such

is

the

case,

remove

screw

(2(5)

and

carefully

pull

out

the

lens.

e.

Note

that

the

614CBRM

projector

is

equipped

with

a

pilot

lamp

(25)

and

lamp

socket

(26)

at

the

top

of

the

sound

head

mounting

plate.

f.

Remove

the

tube

shield

(27)

and

the

12AY7

tube

(28).

If

the

input

transformer

(31),

cable

assembly

(37)

or

tube

socket

(44)

require

replacement,

unsolder

leadwires

as

necessary

and

remove

attaching

parts

as

noted

in

the

exploded

views.

g.

Remove

the

screw

(45),

lock

washer

(46)

and

photo-

cell

cover

(47).

Remove

four

screws

(48)

and

lock

washers

(49)

and

disassemble

the

photocell

(50)

and

mounting

plate

(51)

from

sound

head.

The

terminal

block

(54)

is

secured

with

two

round

head

screws

(52)

and

lock

washers

(53).

h.

Remove

stop

nut

(55)

and

plain

washer

(56)

and

lift

off

retracting

lever

(57).

The

chassis

subassem-

bly

(61)

is

secured

with

three

round

head

screws

(59)

and

lock

washers

(60).

Refer

to

figure

38

for

disas-

sembly

of

chassis

parts

if

inspection

indicates

that

parts

replacement

is

necessary.

8