Bell&Howell AUTOLOAD FILMOSOUND 2585 User manual

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

LUBRICATION
CHART
Parts To
Be
Lubricated
16mm
Sound
Models
2585/2590/2592
Lubricant
Projectors
Non-bearing
machined
surfaces of
castings
Oil P/N
07003
(L1)
Upper sprocket shaft
Oil
P/N
08963
(L2)
Framer shaft
Oil P/N 04978
(L3)
Bearing
face of worm gear
Oil
P/N 04978 (L3)
Lower sprocket
shaft
Oil P/N 078215
(L4)
Felt pads
Oil
P/N 070032 (L5)
Friction surfaces of
all sliding
parts
(not
otherwise specified)
Oil P/N
070032 (L5)
Worm gear
and sprocket
gear teeth
Grease P/N
070043
(G1)
All other
gear and
pinion teeth
Grease P/N 070034
(G2)
Reel arm
lock buttons
Grease
P/N
070034
(G2)
Shuttle link bearings
Grease
P/N 070034
(G2)
In
-out cam, cam
follower and cam wicks
Grease
P/N 070034
(G2)
All pivot posts
and bearings
(in the mechanism
housing)
Grease P/N
070034 (G2)
MULTI -SPLINE SETSCREW TOOL CHART
TOOL NO.
DESCRIPTION USED FOR
G1271
-F1
G1271 -X2
Setscrew Wrench and Handle
Setscrew
Wrench
4-40 multi -spline setscrews
4-40 multi -spline
setscrews
STK3852-B
STK3863-B
Setscrew Wrench and Handle
Setscrew Wrench
6-32
multi -spline setscrews
6-32 multi -spline setscrews
G165 -F1
G165 -X2
Setscrew Wrench and Handle
Setscrew Wrench
8-32 multi -spline setscrews
8-32 multi --spline setscrews
G165
-F3 Special Setscrew Wrench
For setscrews in wrench
handles
TEST FILM CHART
PART NO.
DESCRIPTION
USE
TFL-55 NX1 Test Film
Loop Adjust
centering and framing
TFL-37 NX1 Test Film
Loop
Check buzz track
TFL-26
NX3
Test
Film Loop Check 7KHz
azimuth
TFL-23
NX1
Test
Film Loop
Check 400Hz power output
TFL-D1580
NX2
Test Film Loop
Adjust centering and framing
TFR-D550
NX5 Test Film Roll
Final audio/centering/framing
TFS-D550
NX1
Test Film
Strip (bad holes) Check loop restorer
function
TFS-D550
NX5
Test Film Strip (elongated holes)
Check loop restorer function
5

Service
Instructions
SERVICE
TOOLS
AND
SUPPLIES
CHART
Figure
B
Index
No.
Tool
No.
Tool
Description
Tool
Usage
1
S-078175-6
Fl
Lamp
Plug
(ELC
Lamp)
Optical
system
alignment
(Fig.
Q).
lA
S-1552-1
N1
Lamp
Plug
(BLB
Lamp)
Optic
al
system
alignment
(Fig.
Q).
2
S-550-2
N1
Lens
Plug
Optical
system
alignment
(Fig.
Q).
3
5-550-2
N2
Alignment
Rod
Optic
al
system
alignment
(Fig.
Q).
4
S-550-2
N3
Aperture
Plug
Optic
al
system
alignment
(Fig.
Q).
5
P/N
44507
Tension
Spring
Optical
system
alignment
(Fig.
Q).
6
Make
in
Shop
Torque
Wrench
Adjust
rewind
torque
(para.
38).
7
P/N
710365
Rewind
Torque
Reel
Adjust
rewind
torque
(para.
38).
Purchase
Push
-Pull
Torque
Scale
(Chatillon
#LP
-72,
Master
Gage
Co.,
Chicago,
IL
60622)
Adjust
rewind
torque
(para.
38).
8
S-09701-35
N2
Shuttle
Height
Gage
Check
shuttle
protrusion
(Fig.
T).
9
S-550-8
N1
Alignment
Tool
Align
sound
drum
(Fig.
AC).
10
Make
in
Shop
Adjustment
Tool
Remove
play
from
sprocket
plate.
11
S-552-1
N1
Timing
and
Alignment
Plate
Timing
the
sprockets
(para.
37).
12
S-552-2
N1
Loop
Restorer
Roller
Gage
Adjusting
loop
restorer
(para.
36).
13
Make
from
707588
Decal
Removal
Tool
Remove
decals.
14
P/N
48478
Cleaning
Tool
Clean
film
path
area.
P/N
70507
Adhesive
(Al)
See
parts
catalog
illustrations.
P/N
70910
Heat
Sync
Compound
(HS)
See
paragraph
23.
6

16mm
Sound
Projectors
Models
2585/2590/2592
1A
5
2
3
4
3/4 IN.
1/ 1 6
.1 . 4v.
Cp s
13
r
e___
1/16
1 / 8 I - CD
P LIE-
3/16
IN.
@SPROCKET
PLATE
ADJUSTING
TOOL
MAKE
FROM
ALUMINUM ROD
(5/16 IN. OD BY 3 IN,
LONG)
8
6
14
9
7
12
11
Figure B.
Service
Tools
7-8

16mm
Sound Projectors
Models
2585/2590/2592
DISASSEMBLY/REASSEMBLY
PROCEDURES
10. GENERAL PRECAUTIONS.
a. Be sure to use the proper
size tools for
disassembly and reassembly procedures.
After removing attaching
parts (screws,
nuts, etc.), loosely assemble these parts
to the removed
component or to the tapped
holes in the major
casting to prevent their
loss.
b. Cemented or
adhesive -backed parts are
so noted in
the parts lists and can
be removed
by
carefully prying up one
edge with a decal
removal tool. Be careful
not to scratch
surrounding
areas and remove traces of
old adhesive with solvent
before installing
new labels or
nameplates. If the new item
is
to be cemented in
place, use Bell &
Howell Company P/N 70507
cement. If the
new item is
adhesive -backed, peel off
the
protective tissue and
smooth the item in
place.
c. When
disconnecting
leadwires prior to
the removal of
electrical components,
tag
the leads
or make a rough
sketch of more
complicated connections to
assist in re-
installation. Where unsoldering
is neces-
sary, use a soldering
gun and a heat sink
to
avoid the transfer of
heat to adjacent
parts. Leadwire
colors and connections are
shown in the wiring
diagrams at the rear
of
the Parts.
Catalog section.
d. When
removing riveted
parts for re-
placement, drill
out the old
rivets with a
drill
equal in size or
slightly smaller
than
the diameter of
the rivets. Use
screws and
nuts of
corresponding size to
attach the
replacement
part, making sure that these
parts
do not
interfere with the proper oper-
ation of
the
equipment.
e. The
instructions
contained in
this sec-
tion are
limited to the replacement
and/or
repair
and
adjustment of major projector
components.
If
further
disassembly
is re-
quired, refer
to the Parts
Catalog section
for a more
complete
breakdown. All parts
listings
are
arranged in
a
suggested
order
of
disassembly to
assist
service
personnel
in the
removal
and
replacement of
worn
or
damaged
parts.
11.
PROJECTOR
REAR
COVER
REMOVAL
(Figure
C).
The
lower end
of the
rear cover is
secured
to
the
base of
the
projector
with
three
screws
and to
each end
cap with
two
screws.
When these
seven
screws have
been
re-
moved, the
rear cover
can be
carefully
pulled
away from
the
projector base
and
end caps
to the
limit of the
interconnecting
leadwires.
Normally, this
will be
enough
to
expose all
projector
mainplate and base
-
mounted
components
for
inspection, clean-
ing,
lubrication and
parts
replacement. If
it is
necessary
for the
rear cover to
be
completely
removed,
all
leadwires to the
rear cover
components
must be
disconnected.
When
reinstalling the
rear cover, be
sure
that no
leadwires
have
become caught
and
that the cover
is fully
seated
before in-
stalling
the
mounting
screws.
12.
DRIVE
BELT
REPLACEMENT.
a. Remove
the
projector rear
cover (para-
graph 11),
top cover
(paragraph
13) and
rear
end
cap
(paragraph 15, step
b).
b. If
the
drive belt is
badly
worn
and in
need of
replacement, cut
the old belt and
remove it
from the
projector. Unplug the
motor lead connector.
Loosen the screw at
the upper end of each
motor bracket strap
and disengage the straps
from the motor
mounting bracket.
Remove the four screws
that secure the motor brackets to
the pro-
jector base and
raise the motor just enough
to
permit the new
belt to
be passed
around
the
motor
toward
the
blower. Be
careful not
to lift the
motor so high as to damage
the
blower fan.
Clean
both belt
pulleys
with
isopropyl
alcohol
and
loop the
belt around
the pulleys with as little stretching
as,
pos-
sible.
Reassemble the bracket
straps to the
9

Service
Instructions
°
a
tt
LINE
CORD
RECEPTACLE
REAR
COVER
TO
END
CAP
SCREWS
REAR
COVER
TO
BASE
SCREWS
VOLTAGE
SELECTOR
Figure
C.
Projector
Rear
Cover
(Multi
-Line
Voltage
Models
Shown)
motor
brackets
and
tighten
the
screws
se-
curely.
Secure
the
motor
mounting
brackets
to
the
projector
base
with
the
four
screws
and
reconnect
the
motor
lead
connector.
Reinstall
the
rear
end
cap
and
projector
covers
-
13.
PROJECTOR
TOP
COVER
AND
HANDLE
REMOVAL
(Figure
D).
Remove
the
rear
cover
(paragraph
11).
The
top
cover
is
secured
by
two
screws
which
are
inserted
through
the
upper
sides
of
the
mainplate
and
threaded
into
tapped
mounting
brackets
on
the
underside
of
the
top
cover
(see
Figure
D).
Remove
these
two
screws
and
lift
the
top
cover
from
the
projector.
To
'
-
'replace
the
carrying
handle,
the
two
handle
screws
and
cover
mounting
brackets
must
be
disassembled
from
the
top
cover.
CARRYING
HANDLE
TOP
COVER
COVER
MOUNTING
BRACKET
HANDLE
SCREWS
COVER
MOUNTING
SCRE
WS
MODEL
2585AML
ONLY
Figure
D.
Removing
Top
Cover
and
Handle
10

16mm
Sound
Projectors
Models
2585/2590/2592
14. INTERNAL SPEAKER REPLACEMENT
(Figure E).
The
internal speaker is
mounted to the
front end cap an d can be
removed without
disassembling the front end cap from
the
projector. Remove the
rear cover
(paragraph
11)
to expose the
speaker, and disconnect
the two leads from
the speaker terminals.
Remove the four speed nuts from the mount-
ing studs in the end cap and lift
the speaker
out from the projector.
Reinstall the speaker
in reverse fashion, pressing the leadwire
lug
connectors
firmly in
place on the
speaker
terminals. Redress any leadwires whichmay
have been disturbed during speaker removal.
15. END
CAP REMOVAL (Figure E).
If
it should become necessary to remove
the
front or rear end caps
from the pro-
jector, either for
replacement or to gain
access to
other components, proceed in
the
following manner.
a. Front End Cap. Remove
the rear cover
(paragraph 11) and top cover (paragraph 13)
from the projector. Disconnect the lead -
wires from the internal speaker terminals
and
tip the projectorso
that the underside
of the base
is exposed. Rotate the
tilt knob
until its setscrew is visible through the
cut-
out
in the collar surrounding the tilt knob.
Loosen this setscrew
and withdraw the tilt
knob. Disassemble the screw and washer
from the tilt bar assembly and from the
projector rubber
foot and remove these
parts from the
base. Remove the two
screws
that are inserted
through the base and
threaded into the
lower Tinnerman nuts
assembled to the
underside of the end
cap.
Remove the two screws that are inserted
through the mainplate and
threaded into the
Tinnerman nuts
assembled to the front
edge
of the
end cap.
Reinstall the
end cap in
reverse
fashion and
reconnect
the
speaker
leads to the speaker
terminals.
Reassemble
the top and
rear covers to the projector.
b. Rear End Cap.
Remove the rear cover
(paragraph
11)
and top cover (paragraph 13)
from the projector.
Tip the projector so that
the
underside
of the base is
exposed
and
remove the two
screws that are inserted
FRONT
END
CAP
TILT
KNOB
SCREWS (4)
5/64
IN.
ALLEN
SETSCREW
WIRE -TIE
HEX
NUTS
SPEAKER
LEADS
Figure
E.
Front End
Cap and
Speaker
Removal
through
the
base and
threaded
into the
lower
Tinnerman nuts
assembled
to the
underside
of the
end cap.
Remove
the two
screws that
are
inserted
through the
main -
plate and
threaded
into the
Tinnerman
nuts
assembled to the
front edge
of the end
cap.
If
the rear
end cap
is to be
replaced,
move
the
end cap
far
enough away
from the
pro-
jector so
that the
leadwires to
the end
cap
receptacles can be
disconnected.
Reinstall
the
end cap in
reverse
fashion,
making
certain that all
leadwires
are properly
connected.
16.
BLOWER
REPAIRS
(Figure F).
a. Remove the
rear cover
(paragraph
11),
top cover
(paragraph 13) and the rear end
cap
(paragraph 15,
step b) from
the pro-
jector.
Move
the covers far
enough
away
from
the
projector to
clear the
blower
housing
without
placing strain
on the
inter-
connecting
leadwires.
11

Service
Instructions
SCREWS
(3)
RIGHT-HAND
HOUSING
SCREWS
(2)
SETSCREWS
BLOWER
FAN
LEFT-HAND
HOUSING
O
Figure F. Blower Repairs
b. The
right-hand blower housing
is at-
tached to the
left-hand housing with three
screws and to the
projector base with two
screws. Remove
these five screws and
sep-
arate the two
housings to expose the blower
fan. If the
blower fan is to be
replaced,
loosen the
two setscrews
and disassemble
the blower
fan from the motor
shaft.
c. When
reassembling the
blower assem-
bly, it is
important that the
fan be posi-
tioned so
as not to
strike
against the
two
housings. Assemble the
new
fan
to the
motor shaft.
Press
the motor
shaft to the
left
(to remove
end play) and
tighten the
setscrews just
enough to
hold. Assemble
the right-hand
housing and
hold in mounted
position
(screw holes
aligned)
while spinning
the fan.
Reposition the
fan as
necessary
until there is
clearance between
the fan
and both
housings;
then
tigthen both set-
screws
securely.
d.
Install the
five
housing
mounting screws
and
check
to
make
certain
that all
leadwires
are
properly
dressed.
Reassemble the rear
end
cap and
projector
top
and rear
covers.
17.
MAIN.SWITCH
REPLACEMENT
(Figure G).
Remove
the rear
cover
(paragraph 11)
from
the
projector
to
expose the
switch.
Swing
open
the
lamphouse and
remove
the switch
knob and
grip
ring from
the
front end of
the switch
shaft.
Unscrew the
lock nut
that
secures the
switch to the
mounting
bracket.
Withdraw the
switch from
the
bracket, catch-
ing
the lock
nut and
lockwasher as
they
become
free.
NOTE: Some
single -line voltage
units have
capacitors wired
across the
switchterminals
(see inset,
Figure G)
which must
be discon-
nected
from the
old switch
and
reconnected
to the
replacement switch.
Be sure to
in-
clude
the
insulating
sleeving on the
capa-
citor lead to
the
fuseholder above the
switch.
Insert
the
shaft
of the new
switch through
the hole in
the
bracket and
assemble the
lockwasher and
lock nut
to the
shaft before
inserting
it
through the
mainplate.
Slide the
lockwasher
up
against the
switch boss
and
tighten
the lock
nut
securely.
Assemble the
grip
ring and
switch knob
to the
end of the
switch
shaft and
close
the
lamphouse. Re-
install the
projector rear
cover.
18.
DRIVE
MOTOR
REPLACEMENT
(Figure
H).
Remove the
projector rear cover
(para-
graph 11),
top cover
(paragraph
13)
and
rear end cap
(paragraph 15,
step b)
and
disconnect the
motor leads.
Remove the
blower right-hand
housing and
blower fan
(paragraph 16). Loosen
the screw
in the
upper ears of each
motor bracket strap
and disengage the
straps from the
tongues
of the mounting
brackets. Remove the two
screws from the left-hand mounting bracket
only and slide the motor and bracket for-
ward
and out of the
projector,
while
dis-
engaging the drive belt from the
motor
12

16mm
Sound
Projectors
Models
2585/2590/2592
MAINPLATE
GRIP
RING
SWITCH
KNOB
a)
0
CAPACITOR
P/N
077148
•
O
?Si
INSULATING
SLEEVE
CAPACITOR
P/N
077149
SINGLE
-LINE
VOLTAGE
MODELS
ONLY
LOCK
NUT
IL
SCRE
WS
WIRE
CLAMP
FUSEHOLDER
MOUNTING
LOCK
WASHER
BRACKET
MAIN
SWITCH
Figure
G.
Replacing
the
Main
Switch
pulley.
If
the
motor
is
to
be
replaced,
remove
the
pulley
from
the
motor
shaft.
Assemble
the
new
motor
and
left-hand
bracket
to
the
projector
base,
with
the
pulley
loosely
installed
on
the
motor
shaft,
and
the
drive
belt
looped
around
the
pulley.
Rest
the
motor
end
bell
in
the
cradle
of
the
right-hand
mounting
bracket
and
position
the
left-hand
bracket
so
that
the
mounting
screws
can
be
installed.
Assemble
the
motor
bracket
straps
to
the
end
bells
and
mounting
bracket
ears
and
tighten
the
strap
screws.
Insure
that
the
thermal
fuse
and
sleeve
assembly
is
properly
positioned
and
retained
against
the
motor.
Reassemble
the
right-hand
blower
housing
and
blower
fan
to
the
motor
shaft
(paragraph
16).
Position
the
drive
pulley
so
that
the
drive
belt
is
perpendicuar
be-
tween
drive
pulley
and
mechanism
pulley.
Then
tighten
the
two
pulley
setscrews
se-
curely
and
reconnect
the
motor
leads.
Re-
place
the
rear
end
cap
and
projector
top
and
rear
covers.
END
BELL
0
0
0
MOTOR
PULLEY
SETSCREWS
(2)
MOTOR
BRACKET
STRAP
(2)
•
.ss•
0
OQ
0
o,Y
00
au
00
It)
MOTOR
MOUNTING
SCREW
(4)
MOUNTING
BRACKET
(2)
Figure
H.
Replacing
the
Drive
Motor
13

Service
Instructions
"PIGGY
-BACK"
LAMP
AND
TRANSFORMER
ASSEMBLY
FRONT
SCREWS
(2)
PROJECTOR
BASE
REAR
SCREWS
(2)
Figure
J.
Replacing
the
Transformer
(Single
-Line
Voltage
Models
Shown)
19.
TRANSFORMER
REPLACEMENT
(Figure
J).
a.
Single
-Line
Voltage
Models.
Although
the
2585/2592
units
are
equipped
with
a
"piggy
-back"
power
and
lamp
transformer
and
the
2590
unit
is
equipped
with
a
power
transformer
only;
transformer
replacement
procedure
for
all
single
-line
voltage
units
is
the
same.
To
gain
excess
to
the
trans-
former,
remove
the
rear
cover
(paragraph
11),
top
cover
(paragraph
13)
and
rear
end
cap
(paragraph
15,
step
b).
To
replace
the
transformer,
first
remove
the
two
screws
closest
to
the
mainplate
installed
from
the
underside
of
the
projector
base.
Then
re-
move
the
two
remaining
screws
installed
from
the
top
of
and
down
into
the
left-hand
and
right-hand
transformer
brackets
into
the
projector
base.
See
Parts
Catalog
Fig-
ures
9A
and
9B
if
further
breakdown
of
the
transformer
is
required.
Reinstall
the
transformer
by
reversing
the
removal
pro-
cedure.
Refer
to
the
appropriate
wiring
diagram
in
the
Parts
Catalog
for
proper
wiring
connections.
Replace
the
rear
end
cap
and
projector
covers.
b.
Multi
-Line
Voltage
Models.
These
models
are
equipped
with
a
power
trans-
former
only.
To
replace
the
power
trans-
former
remove
the
rear
cover
(paragraph
11),
top
cover(paragraph
13)
and
rear
end
cap
(paragraph
15,
step
b).
Next
remove
the
four
screws
that
are
installed
from
the
top
of
the
transformer
mounting
bracket
and
down
into
the
projector
base.
Remove
the
two
hex
nuts
to
disassemble
the
fuse
-
board
support
from
the
transformer.
Re-
verse
the
removal
procedure
to
reinstall
the
transformer.
Refer
to
the
appropriate
wiring
diagram
in
the
Parts
Catalog
for
proper
wiring
connections.
Replace
the
rear
end
cap
and
projector
covers.
20.
REAR
REEL
ARM
REPLACEMENT
(Figure
K).
a.
Remove
the
projector
rear
cover
(par-
agraph
11)
and
top
cover
(paragraph
13)
and
disassemble
the
retaining
rings,
gear
and
washer
from
the
rear
reel
arm
shaft..
Note
the
manner
in
which
the
reel
arm
disc
is
oriented
in
regard
to
the
mainplate.
Re-
move
the
three
screws
and
disassemble
the
disc
and
reel
arm
from
the
mainplate.
The
lock
button
and
its
spring
will
'pop"
from
position
when
the
reel
arm
is
re-
moved.
Be
careful
not
to
lose
these
parts.
NOTE:
If
further
reel
arm
repair
is
re-
quired,
refer
to
Parts
Catalog
Figure
12
for
a
complete
breakdown
of
reel
arm.
parts.
When
reassembling
the
reel
arm,
be
sure
to
maintain
a
backlash
of
0.005
to
0.018
inch
(0.127mm
to
0.460mm)
between
the
upper
face
gear
and
its
mating
spur
gear.
b.
Apply
a
light
film
of
grease
(B&H
P/N
070034)
to
the
mounting
flange
of
the
reel
arm
and
around
the
reel
arm
hole
in
the
mainplate.
Assemble
the
tension
spring
to
the
shaft
of
the
lock
button
and
insert
the
button
shaft
into
the
small
hole
adjacent
to
the
reel
arm
hole.
Depress
the
button
while
assembling
the
reel
arm
to
the
main
-
plate.
With
the
reel
arm
in
the
Mown?'
posi-
tion,
release
the
button
and
assemble
the
reel
arm
disc
to
the
reel
arm
shaft.
Install
the
three
disc
mounting
screws
and
tighten
to
14
inch
-pounds.
Manually
depress
the
14

16mm
Sound
Projectors
Models
2585/2590/2592
REAR
REEL
ARM
ASSEMBLY
LOCK
BUTTON
e
TENSION
SPRING
REEL
ARM
DISC
FLAT
WASHER
SCREWS
(3)
Oka
RETAINING
RING
(2)
SPUR
GEAR
Figure
K.
Replacing
the
Rear
Reel
Arm
lock
button
and
raise
an
d
lower
the
reel
arm
to
check
for
freedom
of
movement.
Assemble
a
retaining
ring,
flat
washer
and
spur
gear
to
the
reel
arm
shaft
and
secure
these
parts
with
the
second
retaining
ring.
Lightly
brush
the
gear
teeth
with
grease
and
manually
rotate
the
spur
gear
to
check
engagement
with
the
mating
idler
gear.
There
should
be
a
barely
perceptible
amount
of
backlash
between
gears.
21.
FRONT
REEL
ARM
REPLACEMENT
(Figure
L).
a.
Remove
the
projector
rear
cover
(para-
graph
11).
Note
the
manner
in
which
the
clutch
gearing
is
assembled
to
the
reel
arm
shaft.
Remove
the
retaining
ring
and
disassemble
the
gearing
from
the
reel
arm
shaft.
Note
the
manner
in
which
the
reel
arm
disc
is
oriented
in
regard
to
the
main
-
plate.
Remove
the
three
disc
screws
and
disassemble
the
disc
and
reel
arm
from
the
mainplate.
Be
careful
not
to
lose
the
lock
button
and
spring
when
they
"pop"
from
place.
NOTE:
If
further
reel
arm
repair
is
re-
quired,
refer
to
Parts
Catalog
Figure
11
for
a
complete
breakdown
of
reel
arm
parts.
When
reassembling
the
reel
arm
be
sure
to
maintain
a
backlash
of
0.005
to
0.018
inch
(0.127mm
to
0.460mm)
between
the
upper
face
gear
and
its
mating
spur
gear.
b.
Apply
a
light
film
of
grease
(B&H
P/N
070034)
to
the
mounting
flange
of
the
reel
arm
and
around
the
reel
arm
hole
in
the
mainplate.
Assemble
the
tension
spring
to
the
shaft
of
the
lock
button
and
insert
the
button
shaft
into
the
small
hole
adjacent
to
the
reel
arm
hole.
Hold
the
lock
button
in
while
assembling
the
reel
arm
(in
"down'?
position)
to
the
mainplate;
then
release
the
button.
Assemble
the
reel
arm
disc
to
the
reel
arm
shaft.
Install
the
three
disc
mounting
screws
and
tighten
to
14
inch
-pounds.
Assemble
the
rewind
gear
to
the
shaft
with
the
square
hole
in
the
gear
hub
engaging
the
square
retaining
clip.
As-
semble
the
clutch
gear
and
the
bearing
assembly
to
the
reel
arm
shaft,
turning
the
spring
leg
of
the
bearing
assembly
and
engaging
it
between
the
pins
of
the
15