Page 1
MODEL 101 PRINTER
MAY
1978
Centronics No. 37400010
Rev.
H
I:EnTROnll:S
data computer corp.
HUDSON,
TELEPHONE
NEW
HAMPSHIRE
(603)
88_3
03051
- 0111
Page 2
MODEL 101 PRINTER
THE INFORMATION CONTAINED HEREIN
PROPRIETARY AND
OR
REPRODUCED WITHOUT WRITTEN
MISSION OF CENTRONICS data computer corp.
IS
IS
NOT TO
BE
RELEASED
PER-
CEnTRoniCS
data computer corp.
HUDSON,
TELEPHONE
NEW
HAMPSHIRE
(603)
883
03051
- 0111
Page 3
Page 4
TABLE
OF CONTENTS
SECTION 1
INTRODUCTION
SECTION
1.1
1.2
1.3
1.4
1.5
2.1
2.2
2.3
4.1
4.2
4.3
4.4
4.5
4.6
4.7
General Description.
Logic
Printer Operation
1.3.1 Character Printing
1.3.2
1.3.3 Special Functions
Specifications Summary
Physical Description
Site Preparation . . . . . . . .
Shipping Crate. . . . . . . . .
Paper
Introduction
Basic
Initializing the
4.3.1 Prime Circuit
4.3.2 Select Circuit
Loading Data . . .
4.4.1 General
4.4.2 Data
4.4.3 Acknowledge
4.4.4 Busy Timing
4.4.5 Clocking I
4.4.6 Function Decoder .
Character Printing . . . . . . . . .
4.5.1 Initiating the Printer Operation . .
4.5.2 Print
4.5.3 Character Registration
4.5.4 Character Generator (ROM)
4.5.5 Print
4.5.6 Power Driver Circuit . . . . .
4.5.7 Terminating the Printing
Paper
4.6.1 Line
4.6.2 Form
4.6.3 Vertical Tab
4.6.4 Vertical Format
4.6.5 Line
Special Functions
4.7.1
2.7.2
Flow
Diagram
Paper
Movement .
Guide
Timing
Movement . .
and
Strobe.
Head
Head
Feed
Feed
Feed
Bell.
Delete.
Stacker
. . . .
. . . .
Printer.
nput
Motion
Operation
Solenoid Driver
.
SECTION 2
INSTALLATION
Assembly.
SECTION 4
THEORY
Data
Into
. . . . . .
Unit
and
OF OPERATION
the Buffer
Timing
....
Operation.
. "
AND
AND
OPERATION
3
PAGE
1-1
1-2
1-3
1-3
1-4
1-5
1-6
1-7
. .
2-1,
. .
2-2
.2-3/2-4
4-1
4-3
4-3
4-4
4-6
4-8
4-8
4-8
.4-10
.4-10
.4-12
.4-14
.4-16
.4-16
.4-18
.4-18
.4-21
.4-21
.4-22
.4-24
.4-24
.4-25
.4-25
.4-27
.4-27
.4-29
.4-29
.4-29
.4-31
Page 5
TABLE
OF CONTENTS (Cont'd)
SECTION
4.7.3
4.7.4
4.8
Power Supplies . . . . . . . . . . . .
4.8.1 +5V Regulator (Schematic No. 63011143) .
4.8.2 +12V
4.8.3 +35V Power Supply, Unregulated (Schematic No. 63002307).
5.1
5.2
Introduction . . . . . . . . .
Mechanical Assemblies . . . .
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.2.11
5.2.12
5.2.13
Paper
Empty . . . . . . . . . . . .
Motor
REMOVAL,
Cover
Control (Optional) . . . . . . .
and
-12V Regulators (Schematic No. 63002308)
REPLACEMENT
(A).
. . . . .
Carriage Mechanism (HA)
Driving Mechanism (HB) .
Spring Drum (HC) . . .
Damper (HD) . . . . . .
Frame
Paper
Pin
Form
Ribbon
Electrical Hardware
Paper
Printer
(HE).
Feed
Feed
Feed
Feed
Stacker
Head
. . . . .
Mechanism (HF)
Unit
(HF) . . . .
Mechanism (HH)
Mechanism (HI)
(HJ).
and
Guide.
and
Associated Assemblies
SECTION 5
AND
ADJUSTMENT PROCEDURES
. .
.
..
PAGE
·
4-31
·
4-31
.
· 4-35
. 4-35
4-37/4-38
4-37/4-38
5-1
5-1
·
5-1
5-2
5-5
.5-14
.5-14
.5-15
.5-19
.5-21
.5-24
.5-28
.5-34
.5-34
.5-35
6.1
6.1.1
6.2
6.3
6.4
6.5
SECTION 6
MAINTENANCE
Electrical Adjustments (model 101/101 A)
Video
Amplifier
Adjustment
(Series
101)
Mechanical Adjustments . . .
Preventive Maintenance
(P
.M.)
Recommended Tools .
Troubleshooting Guide . . .
SECTION 7
AND
DRAWINGS
PARTS LISTS, ELECTRICAL
SECTION 8
AND
DRAWINGS
PARTS LISTS,
APPENDIX A
SIGNAL
GLOSSARY
APPENDIX B
PARALLEL
INTERFACE SPECIFICATIONS
6-1
6-1
6-1
6-2
6-3
6-4
MECHANICAL
ii
Page 6
LIST
OF
ILLUSTRATIONS
FIGURE
.
1-1
1-2
1-3
1-4
1-5
1-6
1-7
1-8
1-9
2-1
4-1
4-2
4-3
4-4
4-5
4-6
4-7
4-8
4-9
4-10
4-11
4-12
4-13
4-14
4-15
4-16
4-17
4-18
4-19
4-20
4-21
4-22
4-23
4-24
4-25
4-26
4-27
4-28
4-29
4-30
5-1
5-2
5-3
5-4
5-5
5-6
5-7
5-8
5-9
5-10
5-11
5-12
5-13
5-14
Modell
Basic
Print
01
Printer
(Front
Block Diagram
Head
Components . . .
Cover Removed) .
Printing the Letter (H)
Paper
Movement Mechanism .
Left
Front
View
of
101
Printer
Right
Front
View
of
101
Printer.
Rear
View
of
101
Printer . .
Rear
View (101 Electronics Cavity Removed) .
.
..
Printer Dimensions . . . . . . . . . .
Moder 1
Functional
Basic
01
Functional Block Diagram. .
Flow
Chart
Timing Circuit
Prime Timing . . . .
Prime Circuit . . . . .
Select Circuit . . . .
Input
Data Timing - No Busy Condition .
Data I
nput
Circuit . . .
Acknowledge Circuit . .
I
nput
Busy
Data Causing
Circuit
Busy.
. . . . .
Function Decoder . . .
Character Printing Block Diagram
and
Forward
Character
Reverse
Timing.
Character Registration
Normal
and
Elongated Characters
Clutch Drive
Circuits.
. . . . . . . . .
and
Timing Circuit
Solenoid Positions, 1 through 7
Print
Head
Timing . .
Power Driver Waveform
Line
Feed
Circuit
Feed
Line
Form
Form
Bell Circuit . .
Paper
Location
Motor
Motor
Timing
Feed
and
Vertical Tab Circuit
Feed
and
Vertical Tab Timing
..
Empty
of
....
. . . . . . . . .
Motor
Control Circuit . .
. . .
Control Board I nterconnection Diagram . .
Control
Timing.
. . . . . . . .
Power Distribution Diagram . . . . . .
101
Model
Main
Bushing End Play Adjustment
Location
Bushing End-Play Adjustment
Flexible Timing
Fence
Vertical
Location
Removal
Adjustment
Maintaining
Two
Ribbon
Series Drive Train ~ . . . .
Motor
Drive
and
Belt Arrangements . . . .
for
of
Left
Reed
Switch (Top View) . . . . . . . . .
for
Fence
Adjustment
and
Horizontal Alignment
of
Left
of
Belt (32) Idler Slide (28),
for
Paper
5/8
IN. (15.9 MM) Nominal Print Margin
Mpunting, Series
and
Optic
Housing.
Reed
Switch (Top View) . . . .. . . . . . . . .
Holder Gate . . . . . . . . . . . . . . .
Adjustment, Gear with stop
Feed
Mechanism (Rear
Preload Clutch Shaft (HB-50)
Preload Clutch Shaft (HB-50)
101
. . . . . . . . . . . .
of
single Channel Optics
and
Cam
(H
H-23)
of
Printer, Left Side) . . . . . . . .
....
....
. . . . 4-7
. . . . . .4-19
. . . . . . . .
Housing.
. .
Drive Pulley (26) . . . . . . . . .
and
.......
I nside
Cam
(H
.
H-14)
PAGE
1-2
1-3
·
· 1-4
· 1-4
1-4
1-8
· 1-8
1-9/1-10
. 1-9/1-10
·
2-1
· .
4-1
4-2
· 4-3
· . 4-4
4-5
· 4-8
4-9
·4-11
·4-12
..4-13
.4-15
·4-16
.4-17
4-20
.4-21
.4-22
.4-22
.4-23
.4-25
.4-26
.4-27
.4-28
.4-30
.4-32
·
..
4-33
·
..
4-33
..
·
4-34
· . 4-36
· 5-5
5-7
·
·
5-11
· 5-12
· 5-13
· . 5-16
· 5-17
· 5-18
· . 5-19
·
5-22
.5-23
.5-24
· 5-27
5-31
· .
iii
Page 7
LIST OF ILLUSTRATION (cont'd)
FIGURE
5-15 Backlash Adjustment,
5-16 Driving
5-17 Ribbon Reversing Rod
5-18 Ribbon
7-1
7-2 Schematic Diagram, Electronic
7-3 Schematic Diagram, Electronic
7-4 Schematic Diagram, Electronic Card
7-5 Schematic Diagram, Electronic Card
7-6 Schematic Diagram, Power Driver Board (Sheet 1
7-7 Schematic Diagram, Power Driver Board (Sheet 2
7-8 Schematic Diagram, Diagram,
7-9 Schematic Diagram,
7-10 Schematic Diagram, Video
7-11
7-12 Schematic Diagram, Multitap Transformer
7-13 Schematic Diagram,
7-14 Wiring Diagram, Printer Mechanism. . . . . .
7-15 I nterconnecting Diagram; Connector Board
7-16 Schematic Diagram,
7-17 Component Board Assembly, Electronic Card
7-18 Component Board Location, Electronic Card
7-19 Component Board Assembly, +5
7-20 Component Board Assembly,
7-21
7-22 Component Board Assembly, Power
7-23 Component Board Assembly, Video
7-24 Component Board Assembly, Elapsed Time Indicator (Optional)
7-25 Electronic Cavity Assembly. . . .
7-26
7-27
7-28
7-29 Component Board Assembly,
7-30
8-1
8-2 Cover Assembly A . . . . . . .
8-3 Carriage Mechanism
8-4 Drive Mechanism
8-5 Drive Mechanism (Preload Clutches), (Part
8-6 Spring Drum
8-7 Damper
8-8 Frame
8-9 Paper
8-10
8-11
8-12 Ribbon
8-13 Electrical Hardware
8-14 Print
Schematic Diagram, Electronic Card
Schematic Diagram, Elapsed Time I ndicator (Optional)
Component Board Assembly, Connector Board
W1
W2
W3
Harness
Mechanical Subassemblies Series
Pin
Form
SI
ide Shaft A - Adjustment .
Reverse
Harness
Cable Assembly, Computer
Power Cable Assembly . . . .
Feed
Head
Assembly . . . . . .
Assembly,
HC
HD.
HE
Feed
Feed
Feed
. . . . .
. . . . . .
Mechanism
Mechanism
Mechanism
Mechanism HI
and Associated Assemblies. .
Bevel
Gear (HI-43, 59)
Adjustment.
Timing . . . . . . . . .
Card
Card
+5V
± 12 V
Motor
LED
Motor
HA
HB
(Left
HJ
Regulator.
Amplifier
Control.
Tape Reader (Optional)
±
12V
Input
Motor
Control .
. . . . .
(Part
1)
Series
HF
and
Right)
HH
. . . . . .
.....
(No Illustration) .
. . .
No.1
(Sheet 1
No.1
(Sheet 2
No.1
(Sheet 3
No.2
(Sheet 1
No.2
(Sheet 2
Regulator . . . .
. . . . . .
.......
50/60
. . . . .
No.2
Volt
Regulator.
Regulator
Driver.
Amplifier
Control (Optional) .
101
101
2)
HG
of
of
Hz
No.1
. .
Series
of
of
of
of
of
2)
2)
101
3)
3)
3)
2)
2)
.
.
.
PAGE
.5-31
.5-32
.5-33
.5-33
7-3
7-4
· 7-5
7-6
7-7
7-8
7-9
.7-10
·
7-11
.7-12
.7-13
.7-14
.7-15
· 7-16
·
.7-17
.7-18
· 7-19
· .7-21
.7-23
.7-25
.7-27
.7-29
·
7-31
.7-3:
.7-35
.7-37
.7-39
.7-41
.7-43
.7-45
8-3
8-5
8-7
8-9
·
8-11
.8-13
.8-15
.8-17
·
.8-19
.8-21
.8-23
.8-25
.8-27
.8-28
iv
Page 8
SECTION 1
INTRODUCTION
This manual describes the Model
~orporation.
It
provides general
information,
mation enabling field service personnel
interface
information,
The manual
SECTION 1 -
SECTION
2-
a separate document
is
subdivided
into
INTRODUCTION,
mar'1ual,
and provides the reader
INSTALLATION,
eight sections,
printer.
SECTION
SECTION
34-
OPERATION,
THEORY
OF
operation performed
SECTION
5-
diagrams and
REMOVAL,
circuit
REPLACEMENT
includes, step-by-step removal and replacement procedures
assemblies and sub-assemblies in the printer.
SECTION
6-
MAl
NTENANCE,
procedures, and a troubleshooting guide.
101
printer, manufactured
detailed
to
service the printer.
for
each
theory
interface
each
with
introduces the reader
with
by
Centronics Data Computer
of
operation and maintenance infor-
For
serial
input
or
other detailed
is
published
for
your
reference.
its specific purpose.
to
the scope and
a general description
content
of
the printer.
contains unpacking and installation instructions
describes the
OPERATION,
by
use
of
all operator controls and indicators.
contains a detailed description
the
printer
electronics, including
of
flow
each
charts,
diagrams.
AND
ADJUSTMENT
PROCEDURES,
of
all major
includes electrical adjustments, preventive maintenance
of
the
for
major
the
timing
SECTION
SECTION
APPENDICES -
7-
8-
ELECTRICAL
plete set
their
of
associated list
MECHANICAL
DRAWINGS
schematic, wiring and component board
DRAWINGS
sembly drawings and
of
the printer.
'(A)
Signal Glossary
of
materials
their
AND
LIST
for
the electrical
AND
PARTS LISTS, includes all
associated parts lists
(8) Parallel Interface Specifications
1.1
GENERAL DESCRIPTION (FIGURE 1-1)
The Model
101
printer
is
a medium
speed
impact
printer
character generation.
The
unit
prints at a rate
of
165 characters per second, which
character line per second (including carriage return time). Paper
from
4 inches
four
copies. Standard
to
14-7/8 inches
print
can
format
be
accommodated. The
consists
of
10 characters per inch
printer
inch vertically.
OF
MATERIALS,
layout
portion
contains a com-
diagrams and
of
the printer.
printer
for
the mechanical
which
is
uses
a
"5
x 7
dot
matrix
is
approximately one
sprocket-fed, and paper widths
can
produce one original and
horizontally
and 6 lines per
as-
portion
for
full
132-
1-1
Rev.G
Page 9
Figure 1-1. MODEL 101
PRINTER
(FRONT
COVER REMOVED)
1.2 LOGIC FLOW
The
standard
interfaces allow
are
faces
available as required by
Once
ivating
the
the
head
in
character
the
print
wires
Paper
forms
spacing
movement
by
I n
elongated
data
a line
forward
motion,
write
pulses
to
form
movement
is
monitoring
addition,
character,
of
clutch,
data
hardware -controlled
the
DIAGRAM
printer
to
contains a 132-character
be received
the
printable
characters
causing
is
transmitted
are
sent
to
the
the
characters
is
initiated
two
channels
printer
recognizes
as described in
(FIGURE 1-2)
buffer.
at
rates
from
100
to
9600
user
..
is
the
print
from
stored
head
the
in
to
move
buffer
the
to
buffer,
from
the
driver circuits, which energize
on
the
paper.
by
a line feed, vertical
by
a vertical
in .
.a
punched
the
following special
Section
1.3.3.
paper
tab
format
tape.
For
serial
baud.
Several
head
left
to
character
the
or
form
unit
(VFU) which
control
data
inputs,
other
motion
right across
generator.
print
head solenoids causing
feed
function.
optional
is
initiated
the
From
optional
controls
codes: bell,
delete
serial
inter-
by
act-
paper. With
there,
Vertical
vertical
and
Rev.G
1-2
Page 10
DA
T A
INPUT
--r--...-t
TIMING
FENCE
VFU
READER
1.
2.
3.
TAPE
CONTROL
PRINT
(CR
OR
PAPER
(LF,
VT,
SPECIAL
(BELL,
CHAR)
OPERATOR
PANEL
COMMAND
LAST
CHAR.)
MOVEMENT
FF)
FUNCTIONS
DELETE,
EXP.
A
ALARM
HEAD
CONTROL
PAPER
CONTROL
TIMING
MOTION
MOTION
CLUTCH
PAPER
MOVEMENT
SOLENOID
MEMORY
Figure 1-2. BASIC
1.3 PRINTER
Basically, all
1)
character
1.3.1
CHARACTER
OPERATION
printing,
printer
functions
2)
paper movement, and 3)
PRINTING
can
(FIGURE 1-3,1-4)
be
A small aluminum carriage supports the
carriage travels along the
the
print
wires
as
the
energize the
to
form
withdrawn
up
to
fives times
the letter
print
solenoids and drive ·the
the characters in a
so
they
for
H.
Character formations
print
are
flush
anyone
print
line
from
left
head moves
from
print
dot
matrix
with
pattern. When the solenoids
the surface
character. Figure 1-3 shows
for
the standard
Operators Manual. Other available character
(No. C332-20).
BLOCK
grouped
into
other
print
head assembly
to
right. Printing
left
to.
right
wir~s-
against the ribbon, paper and platen
of
the jewel.
64
sets
are
shown in Printer Character Sets brochure
WRITE
PULSES
DIAGRAM
one
of
the
following
auxiliary functions such
..
is
across
Each
an
example
ASCII set
During
accomplished
the
print
are
solenoid
of
are
shown in the Series 100
printing
line. Printing impulses
de-energized,
.can
fire independently
the
dot
PRINT
HEAD
three catagories:
as
bell, delete, etc.
operation, the
by
selectively
the
matrix
firing
wires
forming
are
The
print
head (Figure 1-4) consists
print
wires. The
the
print
head. The free ends
head, which properly
print
jewel.
Printing action
code
has
been
at
the
buffer
returns
line feed
to
the
can
seven
pr.int solenoids and
spaces
is
received. The
output
be
left
margin and
disabled.
or
the
initiated when the
of
the
print
the wires
print
head
an
so
head
reaches
automatic line feed
of
the jewel, casting and
their
attached
wires
pass
through a wire guide at the
that
the correct wires
input
buffer
then
sweeps
across the
the 132-column
is
1-3
print
Wires
are
pass
through the correct holes in the
has
been
filled
page
until a CR
limit
switch.
performed. As
seven
solenoids
with
arranged radially around
front
of
the
or
a carriage return (CR)
command
At
this
time,
the
print
an
option,
the automatic
attached
print
is
decoded
head
Rev.
G
Page 11
PRINT
HEAD
JEWEL
A~
PRINT
A
WIRES
Figure 1-3. PRINTING THE LETTER (H)
1.3.2 PAPER MOVEMENT (FIGURE 1-5)
Paper
can
be
moved manually by rotating the platen knob or automatically
paper movement commands: line feed, vertical tab
Figure 1-4. PRINT HEAD COMPONENTS
by
any
and
form feed.
of
three
Figure 1-5. PAPER MOVEMENT MECHANISM
Rev.
G
1-4
Page 12
A small independent
motor
not
shown in Figure 1-5, provides the power necessary
the sprocket-feed tractors which control paper movement.
energizes a line feed solenoid which activates a clutch
that
sprocket-feed tractors.
To
initiate a single line feed, the line feed solenoid
of
the line feed command, a delay interval
anism
to
return home before another line feed
is
generated.
is
allowed.
is
Allowing
to
move
To
move the paper, the
mechanically links the
printer
motor
electronics
to
the
momentarily energized. Upon completion
the clutch pawl and clutch mech-
Vertical forms movement
until
a hole
tracks: one
tape
is
When the
is
used
caused
detected in the Vertical Format
for
Top
by
direct
mechanical linkage
printer
runs
speaker located at the rear. The
is
accomplished
of
Form and the other
out
of
paper, a sensing switch activates a two-second audible tone in a
printer
the control panel.
1.3.3 SPECIAL FUNCTIONS
I n addition
following
special functions:
to
the printable characters shown in Appendix
.Carriage Return (Octal 015) - Initiates the
Form
Feed
(Octal 014) - Moves the paper
Vertical Tab (Octal 013) - Moves the paper
reached.
Line
Feed
(Octal 012) - Advances the paper one line.
Delete (Octal 177) - Initializes the
by
Unit
to
the
also stops
printing
until
printer
electronics and clears the buffer.
continuously energizing the paper feed solenoid
(VF U) paper tape. The
for
Vertical Tab. The movement
gear
train which drives the paper feed tractors.
printing
and lights the
B,
of
a line.
the
p'aper
PAPE
printer
tape
of
the paper
R EMPTY
can
recognize the
uses
two
light
the next hole in Tape Reader Channel 7
until
the next hole in Tape Reader Channel 5
on
is
reached.
is
Bell (Octal 007) - Generates a two-second audible tone in the speaker
1-5
at
the rear
of
the printer.
Rev.
G
Page 13
1.4 SPECIFICATIONS
SUMMARY
Data
Input
Data Format
Input
Code
Data Rate
Buffer
I
nput
Gating
Printing Method
Dot
Matrix
Elongated Characters
Character Density
Print Format
Print Rate
Number
of
Copies
Character Set
Paper Advance
Slew Rate
Vertical Format
Vertical Format Control
Paper
Entry
Paper
Feed
Auto
Line
Feed
Bottom
of
Form (Opt.)
Printing
7-bit
parallel interface
64-character ASCII
Up
to
75,000 characters/second
One-line character
Data Strobe
acknowledge
Non-gated strobe available
buffer
is
normally gated
of
previous character
with
as
an
Impact, character-by-character
5x7
By line, via octal 016
. 10 characters/inch (horizontally)
132 characters/line (max.)
165 characters per second
Prints original and up
to
four
carbon
copies.
Standard 64-character ASCII, lower
prints
as
upper
case.
Optional
4 inches/second
6 lines/inch (Std.)
8
or
10 lines/inch (Opt.)
2-channel
Rear
Sprocket feed, adjustable
Paper
VFU
Feed
paper tape
to
14-7/8 inch
paper
Atltomatic
Controlled
advance
line feed on carriage return
by
V F U tape,
to
top
of
form.
causes
paper
option.
case
sets
available.
to
Switches
Indicators
Manual Controls
Auto
Motor
Audio
Control (Opt.)
Alarm
Rev.G
Controls/I nd icators
ON/OFF,
ON/OFF,
Forms Thickness, Paper Advance Knob
Drive
Momentarily sounds a buzzer in response
1-6
SELECT, FORMS
TOP OF FORM
SELECT, PAPER
motor
as
required
a Bell code
automatically turns
by
or
paper
OVERRIDE,
OUT
off
the incoming data.
empty
condition.
and on
to
Page 14
Physical/Environmental/Electrical
Height
Depth
Width
Weight
Temperature - Operating
Storage
Humidhy-
Input
Serial Communications Interface
Popu lar Parallel Computer Interfaces
The
printer
The
following
Operating
Storage
Voltage
Other Options
uses
a 1-inch nylon ribbon mounted on 3-inch diameter spools.
four
colors
Black - Part No. 63002293-5001
Red
Green - Part No. 63002293-5003
Blue - Part No. 63002293-5004
are
available:
- Part No. 63002293-5002
Ribbons
11.4"
(28.2 cm)
20"
(50.8 cm)
27.7"
40° F
5
(70.3 cm)
118
Ibs.
(53.5
to
100° F (4° C
-40° F to
to
90%
Oto
95%
VAC ± 10%,60
115
230
VAC
kg)
to
37.5°
160° F (-40° C
(no condensation)
Hz
(Std.)
± 10%, 50
Hz
C)
to
71°
(Opt.)
C)
Centronics nylon ribbons
use
in Centronics
proprietary
as
well
as
long
the right
through the
The printer
from 4
and
1.5 PHYSICAL DESCRIPTION
wide,
to
14-7/8 inches
up
to
4 copies
The
printer
and
weighs approximately 118 I
uses
continuous form paper
can
be
is
approximately
to
can
be
accommodated by the printer. Using'multiple-part
printed, all very legible.
Single-Part Forms: 15
Multiple-Part Forms: Original - 12
Carbon
NOTE
are
matrix
ink
formulation
print
void the warranty
use
of
Paper:
11.4"
bs.
printers. The fabric design and
ensures
head
and ribbon life. Centronics
non-qualified ribbons.
Paper
with
(28.9 cm) high
(53.5 kg.).
designed specifically
optimum
with
regard
standard feed holes on
Paper
weight specifications
to
12
Copies - 9
(Maximum
7%
lb. with. medium hardness
by
20"
print
to
any parts damaged
Ib.-
to
15 lb.
to
1.2
of
five parts)
(50.8 em)
for
quality,
reserves
each
edge.
Paper widths
form,
are
as
follows:
lb., last copy 15 lb.
deep
by
27.7"
one original
(70.3 cm)
Figures 1-6
All
major assemblies and components
to
1-9 show various photographic views
of
the printer taken
are
identified in the table below the photo.
1-7
with
the covers removed.
Rev.
G
Page 15
1.
Print
2. Carriage
3.
Head
Form
Assembly
Feed Mechanism
4.
VFU
Tape
5. Pin Feed Mechanisms 8. Platen
6.
Ribbon
Reader 7. Spring
Feed Mechanism 9.
Damper
Drum
Knob
10.
11.
Timing
Main
Fence
Drive
Belt
Figure 1-6.
LEFT
FRONT
VIEW
OF
101
PRINTER
1.
2.
3.
4.
Operator
Form
Video
Optic
Control
Feed
Motor
Amplifier
Block
Panel
& Cable Assembly
Figure 1-7.
Rev. G
5.
6.
7.
8.
RIGHT
Ribbon
Power
Penetration
Forward
Cable
Driver
Clutch
FRONT
1-8
Board
Control
VIEW
OF
Knob
101
9.
10.
11.
12.
PRINTER
Main
Pulley &
Reverse
Cooling
Ribbon
Drive
Clutch
Fan
Feed Mechanism
Belt
Page 16
1.
2.
3.
Electronics
Electronic
Electronic
Cavity
Card 1
Card 2
4.
5.
6.
+5VDC
12
VDC
+30
Volt
4
Power
Power
Power
Supply
Supply
Supply
7.
8.
9.
Input
Connector
Speaker
AC
Power
Input
10.
11.
Fuses
In-Line
Fuse
Figure 1-8.
REAR
VIEW
OF
101
PRINTER
1.
Main
Motor
AC
Power
Figure 1-9.
Motor
Starting
Connector
Capacitor
REAR
VIEW
2.
3.
4.
Electronics
5.
Power
6.
Power
101
(ELECTRONICS
1-9/1-10
Connector
Transformer
Distribution
CAVITY
7.
8.
REMOVED)
Ribbon
Ribbon
Reversing Rod
Drive
Rod
Rev.G
Page 17
Page 18
SECTIONS 2
AND
3
INSTALLATION AND OPERATION
A separate operators manual contains most
for
the Model
101
printer. This operators manual should
installation and operation.
I ncluded on the
following
pages
manual.
2.1
SITE PREPARATION (FIGURE 2-1)
A line drawing
width
of
the installation site must take
POWER CORD 0
of
the
printer
dimensions
of
the installation, set-up and operating procedures
is
additional
into
account the side covers in
2'.'"
(10.3 ,m) -----I
information
is
shown in Figure 2-1. As shown in this drawing, the
be
referred
to
during normal
not
contained in the operators
an
opened position.
printer
WEIGHT:
118 POUNDS (53.5 kg.)
Figure 2-1. PRINTER DIMENSIONS
2-1
Rev.
G
Page 19
Environmental and electrical requirements at the installation site
are
as
follows:
2.2 SHIPPING
The
wide. The crate
CRATE
printer
is
is
packing crate and
(1)
If
a special interface
interfaces such
the standard parallel interface
(2) A standard vertical
tab and 66 line feeds
Vertical Format
or
if a different
Temperature:
Humidity:
Electrical:
400 to
5%
115
1000 F (Operating)
-400 to
0%
230
1600 F (Storage)
to
90% (no condensation) - Operating
to
95% - Storage
VAC ± 10%,60
VAC ± 10%,50
Hz
Hz
shipped in a crate approximately 20 inches high, 27 inches deep and 32 inches
made
of
weatherized, triplewalled cardboard. When properly strapped, the
printer
is
capable
as
the
Unit.
format
of
fork
lift
operati'bn
is
used, the interface card
RS232,oa
format
(11
Refer
is
special cable
are
defined in Appendix
paper tape providing six line feeds (one inch)
inches)
desired,
for
each
to
the Operators Manual
for
generating a new tape.
with
a seven-high stacking capability.
is
included
is
also shipped. Cabling requirements
with
the printer.
B.
form
feed code. This tape
for
duplicating the existing tape,
is a part
for
For
each
of
certain
for
vertical
the
(3) Documentation -
plastic
printer
in the
with
bag
under the printer. This documentation includes a technical manual
and any optional interface, and a notice
printer
the
printer
but
All
documentation describing
not
documented in the manual.
at
all times
so
that
accurate
shooting purposes.
(4)
(5) Print Sample - A sample
Pin
bar
Feed
Knobs - These knobs are contained in a small plastic
for
the pin feed
unit.
printout
from
that
paper pan.
(6) Unpacking/Repacking and Set-Up I nstruction Sheet.
Shipped in a separate container
for
this assembly
are
included
with
is
the paper guide and stacker assembly. Installation instructions
the assembly and also in Section 2.3.
that
particular
of
all approved
Please
information
particular
printer
changes
is
included in a
incorporated
keep this documentation
will
be
printer
available
bag
stapled
is
included in the upper
for
to
for
the
trouble-
the guide
Rev.G
2-2
Page 20
2.3 PAPER GUIDE AND STACKER ASSEMBLY
The Series
er assembly (Part No.
5001) can be used with
Series
104. It
table
tions, as shown
To
attach
remove
100
paper guide and stack-
100
printers
is
designed for use in
top
or
printer
in
the
the
unit
the
two
screws from
5~7001
all
Centronics
except
the
stand applica-
diagram.
to
a printer, first
001-
Model
both
the
left
and right sides as indicated. Then, install
the
paper guide and stacker
the
back,
these
Make sure
rest on
the
paper feed opening.
four
top
top
screws.
the
rounded
of
the
of
the
printer,
printer using
paper guides
in
front
to
of
PRINTER
STAND
TRAY
PRINTER
STAND
2-3/2-4
PRINTER STAND
APPLICATION
TABLE
TOP
APPLICATION
Rev.G
Page 21
Page 22
SECTION
4
4.1
INTRODUCTION
This section
on
THEORY
(Figures 4-1 and
the theory
of
operation contains a detailed description
OF
OPERATION
4-2)
performed by the Model 101 printer electronics. Throughout this section, reference
schematic diagrams contained
basic
block diagram
in
Figures 4-1 and 4-2.
r---------1
OPTIONAL
INTERFACE
I
L---r-r---I
I I
r'
·7
contained
-,
I
I
i
r-----·
~~~~~~
I
I
I
I \ /
INTERFACE
CONNECTOR
r',
.......
A
',I
/!>t
I
II
DATAI-DATAS
in
Section 7.
Paragraph
of
the 101 printer and a
The
section
4.2
Basic
Timing
4.3
Initial izing the Printer
4.4
Loading Data
4.5
Character Printing
4.6
Paper Movement
4.7
Special Functions
4.8
Power Supplies
is
organized
flow
chart
as
follows:
of
the overall printer operation are
of
each
major function
is
made
DRIVER
CIRCUITS
to
the
TO
PRINT
SOLENOIDS
TO
FWD.
TO
REV.
HEAD
CLUTCH
CLUl
CH
iii
_·CARD
CARD
TO
LINE
ACKNOWLEDGE,
#2
II
Figure 4-1.
MODEL
101
FUNCTIONAL
BLOCK
DIAGRAM
4-1
FEED
SOLENOID
Rev. G
Page 23
"INITIALIZE
LOAD
DATA
NO
NO
YES
PRINT
COMMAND
PRINT
CHARACTERS
PAPER
MOVEMENT
SPECIAL
FUNCTIONS
Rev.
G 4-2
Figure 4-2.
FUNCTIONAL
FLOW
CHART
Page 24
The
The
data,
block
flow
chart
printing
diagram
is
arranged
briefly
characters, paper movement and special functions.
describes all
to
show signal
major
flow
between major electrical assemblies
operations performed
by
the printer,
such
within
as
initializing, loading
the printer.
4.2 BASIC
The basic
ME 1
O.
Capacitor
interface connector and the optional interface board. Signal
OSC'
is
used
TIMING
timing
on Cards No. 1 and
(See
Figure 4-3)
clock (OSC)
C4
controls the frequency. Signal
for
No.2.
the
printer
electronics
OSC
~-------------~-----I
I CARD # 1 TO PRIME I
CKT. I
I
+5V
I 0.005
I
I
I
2
C4
1
ME10
(100 KHz)
uf
6
5 7
OSC
is
is
inverted
OSC
derived
to
is
used
from
a 100 K
generate OSCXT
on Card No. ( signal
OSCXT
OSC'
Hz
P6
oscillator
for
TO
INTERFACE
CONNECTOR
TO
CARD
the
# 2
I TO BUSY, F F &
I
L-----------------~
Figure 4-3. BASIC
4.3
operation initializes the printer. logic
resets
INITIALIZING
Before the
the busy line
THE PRINTER
printer
to
can accept
the interface connector and makes the
II
VT
CKTS.
TIMING
input
data,
it
must
to
a ready state. The select operation after causing a prime
CI
first
RCUIT
be
PR
printer
I ME'd and
ready
to
SE
LECT'ed. The
receive data.
prime·
condition,
4-3
Rev.G
Page 25
4.3.1 PRI
ME
CI
RCUIT
(Figure 4-4,
Timing;
Figure 4-5, Circuit)
The prime
the
following
first
character position in the
conditions:
The prime
PRIME
--
_
OSC
circuit
a.
b.
,
c.
d.
e.
circuit
.......
-1
which
resets the printer logic, clears the
is
used
to
initialize the
Power-up,
Selecting the printer,
End
of
a line
of
print,
Input
delete code,
INPUT
~I.-----:::::
PR I ME
buf~er.
A
timing
signal at the interface connector.
diagram
3mS
printer
of
electronics
buffer,
the
prime
--------+111
can
and places a
timing
is
be
activated
"dummy"
shown in Figure 4-4.
by
anyone
character in the
of
~-------~ll~------------------------~·
10
r-
pS
DMC----'
CLKTB
DS8------~\
During a prime
allows the OSC' clock
generates a high
into
the buffer.
Since the
flip-flop
and DMC
character.
remains set
SCR
PR
I ME and DMC flip-flops
for
are
both active, DS8
~--....fl
,~----------+-
,1----------...
Figure 4-4. PRIME
condition,
to
generate
L signal which disables the
one
signal PRIME
CLKTB
clock
time
goes
pulses
are
after
PR
high and a
TIMING
goes
low,
resetting the DMC
for
the buffer.
buffer
I ME
ON E is
input
both activated on the low-going
is
reset. During the clock interval in which
clocked
At
the
same
and allows the
into
bit 8 of
....
flip-flop.
time, the
CLKTB
edge
the
buffer
r
L
The
low
pulses
of
OSC,
forming the
low
DMC then
PRIME signal
to
clock ZEROS
the DMC
PRI
ME
"dummy"
Rev.G
4-4
Page 26
FROM
FWD.
& REV. DRIVE
CLUTCHCKT.
CARD
# 2
FROM
SELECTCKT.
CARD
# 2
r--l
r7:ARo;'-----------------------------,
! I
~~
I
2
~
~
~
P-
CONNECTOR
BOARD
r--""
I I
J5 J7
P 13
~
A
INPUT PRIME
~--
BI----=d
FROM INTERFACE I I
CONNECTOR I I
L..
__
.J
CONNECTOR
BOARD
TO
16
I I
L..
__
..J
I
I
I
I
I
I
I
I
I
I
I
~~~~~~------------------~~~~K
CARD
#2
I
tOV
I
L
____________________________
~
Figure 4-5. PRIME
CI
RCUIT
'----------------------~
I CARD
#2
P7
13~-----___..,
'---
.....
+'~'="O"'-<\ME11
6 SCRL
TO
DATA
INPUT
16 DRIVE CKT.
(RIME
MEa CLUTCH
L
____
~~
_____________
_
NOTE: PRIME 2 FUNCTIONALLY THE SAME
AS
PRIME.
Page 27
The
1.
following
Power
paragraphs describe the
Turn
charged and signal
remains
low
at ME4-11 and a
capacitor C11, which
duration
of
on - When the
PWR
until
C13 charges
low
at
ME4-10. Before
keeps
PWR
PRIME
several
printer
PRIME
is
is
to
approximately
PWR
PRIME
approximately 100 milliseconds.
conditions which
is
first
turned on, capacitors
held low, causing a power prime
+2V
PWR
PRIME
Iowan
additional amount
can
cause
a prime operation.
C11
and C13
condition.
are
PWR
both dis-
PRIME
through R21. This generates a high
can
go
high,
it
must
first
charge
of
time. The total
4.3.2
Signal
Also
PWR
PR
for
the duration
I ME ensures
of
PWR
that
PR
the Select
I ME, the
flip-flop
PR
I ME
and
EOP
flip-flop
latch
are
reset during power-up.
is
set causing a Prime condition
in the printer.
2.
Selecting the
goes
low.
printer
RC
- When the
network
SE
LECT switch on the
R57/C29 generates a pulse
front
from
this low-going
panel
is
pressed, signal
SE
fires the PRMOS one-shot. This generates a 3 millisecond pulse (PRMOS). PRMOS
flip-flop
ME22 causing PRIME.
After
the 3 millisecond PRMOS interval the
ME22 terminating the Prime condition.
3. Terminating a Line
signal
CI P goes
high,
of
Characters - When the
firing
the PRMOS one-shot which
printer
finishes
causes
printing
a prime
a line
condition
cribed in (2) above.
4.
Detecting a Delete Code - Detection
PRMOS one-shot causing a prime
5.
Detecting a Remote Prime (INPUT PRIME) - When interface signal
the
low
SE
LECT
I P allows the
When
INPUT
the prime
CI
RCUIT
PRIME
condition
(Figure 4-6)
next
OSC
goes
back high, the rising
for
an
additional 3 milliseconds.
of
condition
pulse
to
a delete code (177) on the
as
described in (2) above.
reset the
PR I ME
edge
flip-flop
of
IP
triggers one shot PRMOS, extending
input
INPUT
causing a Prime condition.
SE
L
L signal, which
resets
next
OSC
sets
of
characters,
as
des-
data lines, fires the
PRIME
goes
low,
on the
Before
front
it
can
panel.
receive data, the
The single-pole, double
flip-flop
flip-flop
on Card
SE
L set. Note
#2.
The low-going
that
deselect state when power
high
status
Similarly, the
While the
SE
L signal
of
the
printer
printer
causes
can
printer
a prime
also
Rev.G
throw,
SE
each
power prime
is
first
applied.
can
be
deselected
is
deselected, the
condition
be
monitored
printer
must
pushbutton
LCLK
signal, generated
condition
by
low
SE
and lights the
by
means
4-6
first
be
selected. This
SE
LECT switch on the
by
resets the
again pressing the
pressing and releasing the switch, clocks
can
be
front
SE L flip-flop
SE
LECT switch.
done
panel
so
that
by
the
SE
LECT switch
is
buffered by a latch
the
printer
is
in a
L signal generates a busy condition. When selected, the
SE
LECT indicator on the operator panel. The select
of
signal S LCT at the interface connector.
Page 28
:0
ro
<
----------,
----------~
I
r-CARD.2
I
FROM I
P7
CARD
#1
I SEL K
n Q
12
10L------
I
CONNECTOR
BOARD
TO
BUSY
CKT.
WIRING ,-___
.,
FRONT
PANEL
HARNESS I I
r---,
J12
![]P12
~s
_
I W30 H
__
H
bE~;~~cY
I
fsW~S4
I
I I I 5
__
I 6
W31 F --
F
.!
oV.J
I I .
---
J5
J7
FROM
~
__
PRIMECKT.
K
CARD
# 1 I I
L
___
J
CARD
#1
----1
CONNECTOR
fARD#l
TO
~~!ll>_.,
I PRIME I
J~
}5
P5
SEL
-~-10
I I I
I I 10 SLCT I
I I : I I
I I I L
______
..J
Js
Js
P12
~J12
W29
R14 M
--fM1-----..fi1l-
11
r
____
,
SELECT LAMP I T I I
I
L___
I SELECTI
___
J I LAMP I
I
--------
+OV
L__________
~~T~llj
ME5
+5V
.
46
SELECT
CIRCUIT
Figure - .
TO
INTERFACE
CONNECTOR
Page 29
4.4
LOADING
DATA
4.4.1
the data lines
ponds
the busy line
busy
SHIFT
OUTPUT
GENERAL
I n general, the data transfer sequence consists
with
The diagram in Figure 4-7 shows the
condition.
PARALLEL
DATA
STROBE
REGISTER
TRANSITION
(Figure 4-7/4-8)
of
the
input
device placing the appropriate code on
to
printer
an
acknowledge pulse.
for
the duration
DATA--~~~~~~.w~.w~~:--';
---
and then generating a data strobe pulse. The printer, after a slight delay,
If
-l
MJl
of
the busy
S
~
.....
1
the received data
condition
timing
....
-1
Mt
f.-
------------------_
caused
and then responds
involved in transferring data, which does
a busy
condition,
with
an
the
acknowledge pulse.
printer
first
not
res-
activates
cause
a
I,
I 1. 0 I'S (MIN)
CLKTB----
-I
..
r-
500
I'S
(MAX)
,
I
,
I
I
I
p-
_______
____________________________________________
~_:~I=
350
•
nS
(MAX)
___
ACKNOWLEDGE--
4.4.2
and after
DATA
As shown in the
DATA
....
Figure 4-7.
STROBE
STROBE,
----~,-----------------......
timing
and
l~.--------7
INPUT
diagram
the
DATA
of
DATA
TIMING
Figure 4-7, the data lines must
STROBE pulse must
- NO BUSY
I'S
--------.~I:__
CONDITION
be
stable at least 1.0
be
at least 1.0
usec
wide.
4
I'S-4
usec
r-
before
Rev.
G
4-8
Page 30
:IJ
CD
<
FROM
INTERFACE
CONNECTOR
CONNECTOR
BOARD
(SEE
NOTE 1)
,-----.,
I I
I I
J~
J6
IcARo-;;---------,
I I
I I
I E6 !
ME16
DSTB
P5
I 2
11
I
I
P6
FROM
FUNCTION
r--
-
--
- - - - - - -
--
-
--,
DECODER
CARD
# 2
CARD
# 1
~7
CONNECTOR B CLGT
BOARD
.------,
I I
J~
(SEE
I
_~TE1)1
T
~-
I I
I I
P5
8.
P6
J5
8.
J6 h
I
I
DATA
STROBE
I FROM
I PRIME CKT. I
15
MEl,
2,
3
t'l:;;:,2
__
-;
9 133 x 2
BIT
SHIFT
2 REGISTERS
t-:
5
::...-
___
-l
4 13
I (CARD
#1)..
I
1.
THE FOLLOWING
TABLE
CAN
BE
USED TO L
___________
...J
,---+--+-,-,15~
ME4 12
11
9 133 x 2
BIT
SHIFT
IDENTIFY
THE INPUT
DATA
AND
DATA
STROBE PINS.
CONNECTOR
SIGNAL/PIN
IDENTIFICATION
SIG
J4 J6
P6
SIG
DATAl
18
VV
DSl
DATA
2
16 T T
DS
DATA
3
17 U U
DS
DATA
4
20
X X
~
DATA
5
15
S S
DSl
DATA
6
11
MM
PS{
DATA
7
19
WW
!?SI
DATA 8 12
N'
N
~
DATA
21
Y Y
STROBE
P5
P6
3 -
4 -
6 -
5 7 -
8 -
- L
-'
E
J5 J6 J7
P7
3 -
C C
4 -
D D
6 -
F F
5 -
E E
7 -
H H
8 -
J
J
L 5 5
E 6
6
FROM
PRIME CKT.
CARD
#1
Figure 4-8.
DATA
INPUT CIRCUIT
L..-_-+-_...:
2
:...f
REGISTER
t-'5~
__
~,
I
MEB TBB I
2 TO
CHAR. GEN. & I
~~~V:
CRL~';:CHI
I FWD. & REV.
DRIVE
CKTS. I
L
__
....f.L~f!g~
__________
J
TO
BUSY
CKT.
CARD
# 1
Page 31
4.4.3
ACKNOWLEDGE
(Figure 4-9)
~~~
AKOL
The trailing
Y pulse.
If
edge
the
of
the data strobe (DSTB) triggers the
printer
did
not
go
busy
as
triggers the Acknowledge one-shot generating a 4
ACKN
':"""":":~~
ACKN
4.4.4 BUSY
that
low
LG
pulse
can
be
used
by
the interface device
If
the
LG
pulse.
The
timing
causes
a busy
A busy
when the
1.
2. A prime
3. A
printer
TIMING
printer
The
went busy
as
(Figure 4-10,
diagram in Figure 4-10 shows the interface
condition
condition
is
printer
condition
printing
in the printer.
is
developed
not
busy, and
has
been deselected
is
operation
4. A Carriage Return code
5.
The Idummy character appears at the
6. A paper movement operation
a result
of
the received data, the trailing
Timing;
by
goes
Figure 4-11, Circuit)
the B-input gate ME 15
high when any
by
in progress (DMC
is
in progress
has
been
(CI P is
received
such
low);
7. A line feed operation
B.
A Bell
causes
condition
ORBZ
to
(BSP
go
low.
has
is
just
low)
been
or
a Carriage Return code
a result
usec
SE
of
ACKN
to
send
LECT switch
is
high);
low);
prior
Shift
Register
as
line feed,
completed
AKDL
Y one-shot_generating a 7
the received data, the trailing
LG
pulse
to
the interface connector. This
the
next
DATA
timing
pin
B.
of
the
following
(SE L is
to
the 132nd character in a line (ZBCR
output
form
feed,
(0
L
YLF
is
has
STROBE pulse
edge
of
BUSY generates the '
involved in receiving any character
The
output
of
this gate
conditions occurs:
low);
(TBB
is
low);
or
vertical tab
is
low);
been
received
(SCR
usec
edge
~~~
of
AKDL
to
the printer.
is
in progress
is
low). This
Y
normally
is
low);
(PM
is
As soon
low-going
the trailing
as
a busy
OSC
signal clocks the
edge
of
the BUSY signal
terminated.
Also, whenever a Form
immediately resetting
The trailing
edge
connector, indicating
condition
output
Feed
flip-flop
that
ME22, causing a BUSY signal.
of
BUSY generates a 4
the operation
is
detected, the BUSY signal
of
gate ME 15
to
the interface connector
(LFF)
or
Vertical Tab
is
complete.
into
flip-flop
usec
Acknowledge pulse (ACKN LG)
by
(LVT)
to
the external connector
ME22. As a result,
one clock interval
code
is
recieved signal SVFO
goes
flip-flop
after
the busy state
to
the
interface
high. The
ME22 delays
is
goes
high,
Rev.G
4-10
Page 32
--------------------------,
CARD
#1
FROM
BUSY CKT.
2
11A
DSTB
ME27
ONE
SHOT
~7
us
AKDLY
74123 4 12
QI---;..;..j
___
...J
TRACK
~4
us
74123
I
I
I
I
I
6 ACKNLG
P6
t-------1L
I
I
I
I
1
------------------
______
1
Figure 4-9. ACKNOWLEDGE
CI
RCUIT
TO INTERFACE
CONNECTOR
Page 33
DATA
-1
:~,~i
I-
-1
(~~~:
~
-D-A-T-A-S-T-R~O-B~E------~I
~
~-------------------------------------------------------
L 1.0
1500
us
us
(MIN)
(MAX)
II~.----------SEENOTE--------~.~I
BUSY------------~
ACKNOWLEDGE-------------------------------------------,
Note:
Received Data
Bell
Line
Feed
Vertical Tab
Form
Feed
Carriage Return
or
132 char-
acter in a line.
Delete
Octal Code
007
012
013
014
015
177
I
I
I
I
I~
Duration
2 seconds
75-105
300-310
3-3.5
6
max. return time
3
msec
msec
sec
msec
per character plus 270
msec
________________________
4us
of
~-------------
~I
Busy
msec
_
Figure 4-10. INPUT
4.4.5 CLOCKING INPUT
If
the received data
allowing the data strobe DSTB
into
the
shift
register.
If
the received character
CLGT
for
goes
low
inhibiting
If
a carriage return code (octal 015)
that
line (ie., First Character Clock FCCLK
Rev.G
DATA
has
a ONE in
to
is
CLKTB,
generate a
DATA
INTO
THE BUFFER (Figure 4-7, 4-12)
bit 6 or
a control code (ZE
and the character
7 (indicating a printable character), signal CLGT
CLKTB
is
received and at least one printable character
is
set), then the
4-12
CAUSING BUSY
goes
high
pulse. This clocks the received character (DS1-DS8)
RO
in bits 6 and
is
not
clocked
CR
7)
other than a carriage return, then
into
the
shift
register.
has
code
is
stored in the
shift
register.
been
received
Page 34
:0
('t)
<
FROM
FUNCTION
DECODER
(CARD
II)
r------------,
CARD
12
I
SCR
OSC'
1
ME9
(Hl3)
I
I
I
I
I
P7
Hf-'=:'::""--!20
--
r-
- -
-,
FRO"
I
CONNECTOR
C~~:
I
BOARD
I
.-;t
~
-~
~-
L......-+
___
-----+---==----121
--
_Zl
~-
I
I
I
liS
10
-
-~
r-rw-
II
I
I
I
I
I
I
I
rr I
p:--'--
__
~..:.W:J-
_...J
L
___________
..J
'-
,.::..-
l-
T
r--~~------------------------------,
I
I
2C
IS
19
I
I
I
W-
m
SEL
'":..
\
U"EF£[:
CK~
•
ORSI
ill
;;
SCR
~STE
FRill'
"[6
:J&.7:'
:',='.':'
~1(7.
om-
BEll
FRO!<
S[l~
:C.
FRO'"
r:;"CTIO',
:JECO:ER
SS
!+sn
I
I
I
I
I
I
I
I
P6
L
__________________________________
~
Figure 4-11
+'
BUSY
CI
RCUIT
"'0
:'''E~r''=E
:O',\[:-C"
Page 35
4.4.6
FUNCTION
DECODER (Figure 4-12)
inputs
Data
a
control
Function
1.
Carriage
Return acter appears
2. Form' Feed
3. Vertical
4. Line Feed
5. Delete
6. Bell
code
Tab
from
is
detected,
the
interface
the
decoder
Printer
Mnemonic
DSCR
FF
VT
DCLF
DEL
DCBL
connector
output
Control
are
first
buffered
causes
Functions (Card # 1)
the
following
Octal
Code
015
014
013 Moves
012
177
007 Generates
and then applied
action
Shifts
the
Moves
of
Form
reader
Tab hole in Channel 5
reader
Advances
Reset
seconds in
rear
in
line
of
to
decoder gates.
the
printer.
Printer
the
buffer
of
the
paper
hole in Channel 7
is
detected.
the
paper
is
reached.
the
the
printer
an
the
until
at
the
characters.
until
until
paper one line.
electronics.
audible tone,
duration,
printer.
Action
dummy
output
the
the
of
in
the
and
next
of
the
next
the
tape
about
speaker
If
char-
prints
Top
tape
Vertical
two
at
7. Elongated
Characters
UPSC
016
Prints
the
line
of
characters
characters (double
width).
as
elongated
Rev.G
4-14
Page 36
FROM
iHAR.GEN
TIMING
CARD
#2
-----~--CARD#'1-------------------------------1
R12
12
DSTB
E2
DS4
11
3
DS5---:
DS7----'i
DS2'--------_+---=-t
~:---------+--~
DS1---------''---t----:-I
DS2--------_+--...."..
mn--------+---,
~--------+---~
~---------+----1
DS3:---------+---"-I
DS1----------+------"I
DS2--------~--~
FROM
DATA
INPUT
CKT
19r--------~C-~R---~
CKT
L
______________________________
DS3----------r---9
DS1-----------~
DS2-----------~
DS3-----------~
DSTA
OS
DS2
DS3
DS4
DS5
DS6
DS7
DSTB:------------------,
DS1-------------"i
DS2--------------1
D~-----------~L-_
~-------------------~
~-----------_9
mrn------------1
~-------------~
D:S:6-----------~
~-----------~
+--....
I'5&i
2
M
'9
4
_E_
t..
/
DS1--------_+--~
1
(012)8
8
OCLF
(DECODED
LINE
FEED CKT.
VERTICAL
TO
VTCKT.
TO
FF
FEED)
TAB)
FEED)
CKT.
_______
TO
LINE
(~)a
6
VT
( DECODED
(Q.!.4)
a
p"6
__
F_F--I~
( DECODED FROM
( DECODED CARRIAGE RETURN ) P
~6~~================~
=8
( DECODED ELONGATED CHARACTER
~~~==================~---~21
(016)8
UPSC
3
2 (177)8
6 ME20
5~
1
12
11
( DECODED DELETE
TO PRIME CKT.
DECODED
TO
BELL
LOW
INDICATES PRESENCE OF CONTROL
CHARACTER OTHER
THAN
CR
ON
BELL)
CKT.
DATA
LINES
I
1
I
'1
1
I
I
I
1
I
I
I
I
I
I
1
1
I
'
5
~S
1
I
J
TO BUSY CKT
CARD"
2
TO
CHAR.
GENERATOR
&
TIMING
CKT
CARD
# 2
TO
DATA
INPUT CKT.
CARD # 2
Figure 4-12
FUNCTION
4-15
DECODER
Rev.
G
Page 37
4.5
mechanical
inputs
dots
CHARACTER
When
As
to
the
in
the
the
clutch
PRINTING
dummy
which causes
character
(Figure 4-13)
appears
the
print
at
head
the
to
move from left
TO
1
CLUTCH~
Figure 4-13. CHARACTER PRINTING BLOCK DIAGRAM
the
print
head carriage moves across
video ampl ifier board. These timing signals
printed
character.
the
shift
PRINT
page,
register
VIorO
the
timing fence
are
used by
output
to
right across
the
(TBB),
Dew
TIMING
PRINT
and
logic
the
logic activates an electro-
the
page.
SOLENOID
DRIVE
SIGNALS
light
to
register
source
generate timing
the
five
columns
of
The
logic uses
defines
driver circuits which activate
4.5.1 INITIATING THE PRINTER OPERATION (Figure 4-14)
132nd
code
allows
the
The
optional
the
dot
pattern
This section describes
Paragraph
data
As
character
(octal
015)
the
OSC
output.
low
A high TBB (ME20,
When TBB goes high
CI
P signal gated
Motor Control circuit)
is
received
is
received,
is
received
clock
one
ROM (Read-Only-Memory)
for
the
five
columns
the
seven
the
character
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
by
to
generate CLKTB pulses, shifting
by
Initiating
Print Head Motion
Character Registration
Character
Print Head
Terminating
the
printer,
the
dummy
before
the
1)
indicates
and
the
left limit switch
Delayed Clutch (DC L T)
on
the
in
the
print
head solenoids.
printing
the
Printing
Generator
Operation
the
the
dummy
character
132nd
power
character,
dummy
driver
element
5 x 7
character
operatio"
Operation
and
(ROM)
Printing
character
appears
this
the
character.
is
acti~ated
and
the
board,
for
as follows:
Timing
Operation
at
the
code
register until
-12V
the
output
the
complete
matrix.
is
shifted
shift
generates ZBCR (MEg, Figure 4-11). This
(RTPSW
supply,
The
through
register
the
is
controls
of
which activates
64-character
ROM
outputs
the
shift
output.
dummy
high), a low CIP signal
If a carriage
character
a driver circuit (via
set.
control
register. As
appears
the
forward
The
seven
return
is
generated.
clutch.
ROM
the
at
the
Limit switches
the
left, EOP switch
mechanism.
EOP switch indicates
control
Rev.G
the
Actuation
forward
are
on
the
of
the
clutch
located
right) are activated
the
carriage
logic (CIP)
at
the
RTP switch indicates
is
at
right
its
rightmost
and
the
and
left
end
by a magnet
the
carriage
postion.
reverse
4-16
clutch
of
the
printer. These switches (RTP switch
mounted
is
at
The
output
logic (CIR).
on
the
its
leftmost
underside
of
these
of
the'carriage
position.
two
Actuation
switches are used
of
on
the
to
Page 38
:0
CD
<
G>
r-------------------------------------------------------------------------,
P8
CARD
12
TIT
m
+SVo--./III".......-~...J
TB8---------"
.......
+SV
RIO
iifPSij
3 HEl7 4
rcONNECrOR~
•
BOARD
•
:
:--HI~OIl
~--------------------~--~2~--~
• • •
• • •
· . .
• • •
· . .
:1
• • •
· . .
I • •
I I I
· . .
R33
• • •
· . .
• I I
•
•
·
I I
10
________
1
FROM
CHAR.
GEN.CKT.
~~U~~·CRIVER
P~
__
[]~8
P~2
__
~------------~C~In~_;
__
L
__
1I9~W4~9--------------_U:3~--
I •
L
____
.I
. . .
..
____
01
•
~~~R
PRIME
17
~
CKT.
R
(CARD
11)
10
_________________________________________________________________________
....
Figure
4-14. FORWARD AND REVERSE CLUTCH DRIVE
CI
RCUITS
3
I
• •
L
________
•
Page 39
4.5.2
drive
is
at least
is
shunted through CR31
goes
029
motor
gated
PRINT
Power
with:
40
HEAD
for
to
an
(1) Delayed Clutch signal
MOTION
moving the
(Figure 4-14; Schematic - Section 7)
print
head
from
left
to
right across the
electromechanical clutch mechanism. The clutch
(DCl
T)
to
ensure
milliseconds before being reactivated; arid (2) the -12V supply,
on before activating the forward clutch. This gated
The
input
to
the power driver
to
ground. Diode CR30 offsets the diode
is
normally
low
active high, CR31 becomes back biased, causing current
and
028
to
saturate, and current
to
flow
through Q29 and R41. The
that
CI
P signal controls the forward clutch driver.
thereby causing the current
to
also flows through and activates the forward clutch. The clutch
page
is
transmitted
is
the
controlled
print
head rests at the
to
by
ensure
flowing
drop
of
CR31. When the
flow
through CR30, R49, and transistor
current
current
is
limited
by
from
the
CI
P signal.
left
that
the -12V supply
through R42
flowing
through
R40.
the main
margin
input
CI
for
signal
028
P
to
be
When the clutch signal
the magnetic field
4.5.3
interrupt
CHARACTER
As
the
light
of
the forward clutch
REGISTRATION
print
head assembly moves across the
to
the optical pick-up head, generating a video signal. The
triggers the STROBE one-shot
The STROBE one-shot
is
the basic
4.5.3.1 Video
tached
timing
Amplifier
The
circuit
to
the
print
The video
signal.
used
to
head carriage.
amplifier
goes
low,
ME
18 on the logic card, intiating the
is
adjusted
(Figure 4-16)
generate and
is
comprised
029
and
028
is
dissipated.
AND
TIMING
for
450
usec.
amplify
of
the video signal
a Isensor and operational.
the schematic drawing number 63002669 in Section
through the
opaque bars on the
light
signal
put
for
each
timing
is
applied
light
fence
into
timing
fence and generates a pUlsating
to
the positive
signal. The
electrical energy. As the carriage moves, the
input
of
ME
1.
duty
cycle
of
VI
DEO
turn
off.
Diode CR29 provides a current path
(Figure 4-15,
timing
fence, the vertical slots on the
In normal character
is
7.
The Isensor converts
output.
The signal
output
is
is
set
amplified
by
Timing;
print
Figure 4-16, Circuit)
VI
DEO AMP
timing
shown in Figure 4-15.
printing,
located on the video
amplifier
The positive
ME
1.
Refer
li~ht
energy monitored
light
source
output
by
ME 1 and provides a high out-
adjusting R4.
timing
output
then
STROBE
amplifier
to
is
interruped
generated on
until
fence
board at-
by
each
4.5.3.2
Timing
For
Signal (Figure 4-15;
normal character printing, five consecutive STROBE pulses are counted down by the divide-
by-six counter ME27. The counter
DCWO-DCW5. These
quiescent state
During
of
the
DCWO,
shift
the
register. The
timing
of
this storbe counter
STROBE
intervals correspond
input
DCW~-DCW5
ROM (character generator).
During elongated character
clock the strobe counter. As a result,
character mode than during the normal character mode.
Rev.G
Timing,
outputs
generates a
printing,
Figure 4-16, Circuit)
PWC1, 2 and 4
to
the five
is
DCWO which corresponds
CLKTB
timing
outputs
the UCC latch
timing
outputs
DCW1-DCW5 are
4-18
are
then decoded
columnsin
the character matrix. The
to
the
space
pulse which clocks the
are
used
to
address the appropriate column in the
is
set allowing alternate STROB E pulses
twice
to
generate
timing
outputs
interval between character.
next
character
to
the
output
to
as
long during the elongated
Page 40
VIDEO
VIDEO
STROBE
AHP
~I
~450
pS
DCWO---..J
DCWl---'~~Ji----------------~--L-
DCW2---...;.....;.
DCW3---------
DCW4---------
DCW5------~-------------
----u
u-
r
PRINT
5 x 7
TIMING
CHARACTER
FOR
(A)
--u
---u
Figure 4-15.
CHARACTER
4-19
u-
L..r:
TIMING,
Rev."G
Page 41
:0
(1)
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CHADDJ
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Figure4-16
CHARACTER
REGISTRATION
AND
TIMING
CIRCUIT
Page 42
4.5.4
CHARACTER
GENERATOR
(ROM) - Figure 4-16
The logic board contains one ROM element in element location ME35.
(Le., columns 1,2,3,4,5)
The ROM (Character Generator) element
1.
The character address - The standard
(CHADD1-CHADD6).
2.
Column Address - Timing outputs DCW1-DCW5 specify the five columns in
character matrix.
3.
Timing
- A
character and column
ROMTB8. 'ROMTB8
The STROBE pulse' provides the
head
solenoids.
For elongated character printing, the
character mode, causing the printed character
example
of
for
up
to
64 characters.
low
input
to
pin 28
to
the
is
always high allowing
the character (Y),
of
the ROM,
output
timing
both
has
three inputs (in addition
64
character ROM (ME35)
gates
the
of
that
ROM. This
each
STROBE pulse
input
for
gating the
DCW
timing
in normal
signals
to
be
twice
and
elongated style,
7-bit
timing
are
is
dot
configuration
input
7-bit
twice
as
wide
It
provides outputs
to
the
input
voltages):
addressed
is
to
gate the ROM
dot
pattern
as
long during elongated
as
a normal character.
is
shown in Figure 4-17.
by
TB 1-TB6
each
5 x 7
of
the addressed
STROBE ANDed
to
the
with
output.
print
An
7
I
I
N
3:
3:
u
u
Cl
Cl
Figure 4-17.
The
seven
outputs
4.5.5
seven
the location
#7
located at the end
about one ounce
(Le., the distance necessary
PRINT
The
print
HEAD
head
OPERATION (Figure 4-18, 4-19)
is
the device
wires against the ribbon
of
the wires in the
controls the
bottom
of
the head. The length
of
force
dot
I
I I
M
3: 3:
u u
Cl Cl
from
to
I
U')
<:t
3:
u
Cl
NORMAL
the ROM
used
to
form
the column
head
are
AND
are
print
shown in Figure 4-18. Solenoid #1 controls the
I
3:
3:
u
u
Cl
Cl
ELONGATED
applied
to
the Power Driver board
the characters. The
of
dots on the paper. The position
in a column. The wires come from
of
these wires
to
begin its movement. The amount
to
make a
dot
on the paper)
is
I
N
~
U
Cl
I
N
~
U
Cl
I
M
~
U
Cl
I
M
~
U
Cl
I I
<:t <:t
3:
u u
Cl Cl
~
CHARACTERS
as
signals
head
contains
each
solenoid and
is
approximately 3.5 inches and
of
force needed
seven
are
to
move the wires 0.015 inch
about 12 ounces.
I
I
LI'l
LI'l
~
3:
U
u
Cl
Cl
CG
1-CG7.
solenoids
of
these solenoids and
top
that
dot
and solenoid
positioned at a jewel
each
wire requires
move
The total distance travelled
end
of
the
head
is
about 0.006 inch
0.015 inch
from
the paper,
is
impact.
by
to
account
the wires
from
is
approximately 0.015-inch,
the ribbon and paper. The
for
the
amount
4-21
of
force absorbed
reason
but
under normal operation, the
for
locating the wires closer than
by
the ribbon and paper upon
Rev.
G
Page 43
JEWEL
WIRE
(FACE
ASSEMBLY
OUTLETS
OF
HEAD)
SOLENOIDS
(BACK
Figure 4-18. SOLENOID POSITIONS, 1
The electrical
450 microsecond pulse
volts unregulated., This voltage
about +30 volts when all pins
drive pulse, about 200 microseconds
wire starts moving,
Approximately
SOLENOID
DRIVE PULSES
MOTION OF
WIRE
timing
is
an
additional
500 microseconds more
T
.015"
OF
HEAD)
and mechanical movement
used
to
complete the impact. The voltage
is
about +35
are
engaged
300
-..-----
,
450fLS
l I I
.L_---'
(1-7)
of
the wires
to
+38 volts when the pins
at the
same
time. From the beginning
is
required before the wire starts
microseconds
are
required
I
is
required before the wires make impact on the paper.
for
the wire
mS
----4--t!
THROUGH
is
shown in Figure 4-19. As shown, a
used
to
are
to
move in
to
retract
7
drive the solenoids
-in
an
idle state,
of
the 450 microsecond
each
to
its normal position.
but
solenoid. Once the
L
is
+35
drops
to
~275fLS~
DISCHARGE
OF
CURRENT
4.5.6 POWER
4.5.6.1 Solenoid Drivers (Figure 4-20)
The wire 0
driver circuits where
in
each
head.
Since all solenoid driver ,circuits
controlled
Rev.
G
by
CG 1 will
DRIVER
Red
they
_~II
Figure 4-19.
CIRCUIT
outputs
be
from
the character generator
are
inverted, amplified and
described.
....-.
__
PRINT
are
identical and operate in the
HEAD
4-22
used
TIMING
CG
to
generate current pulses
----'
1-CG7
are
same
applied
manner,
to
the solenoid power
for
firing
the solenoid
only
the
first
one,
Page 44
Referring
dition
for
solenoid
The current through
to
Power Driver schematic
#1,
current flows through R4. This current flows
03
then develops a positive level
emitter followers, rdeveloping a voltage
dissipation in
02.
#63002275,
of
approximately 3.B volts across R
when
across
CG 1 goes
R5. This level
high indicating
into
the
base
causes
1.
an
active con-
of
03,
02
and
turning
01
to
it
act
on.
as
Resistor R2 limits power
The 3.BV
transistor
01.
Transistor
2.5 amps,
When
01.
01
across
When 01
01
is
saturated
goes
into
CG 1 goes
R 1 allows approximately a 2.5 amp current
is
first
turned on, the inductance
at
this time. When current
the active region and
inactive low,
03
limits
turns
current flows through CR2 and C1. The value
inductance
form diagram
of
the solenoid. Diode CR2 allows
is
shown in Figure 4-20.
VOLTAGE
+30V
----.
2.5
AMPS
CURRENT
o
-.----r'"
/
f
Figure 4-20. POWER
the current
off,
turning
of
C1
is
only
a quarter-wave
350 IlS
DRIVER
flow
through solenoid #1 and
of
the solenoid prevents current
flow
through the solenoid
to
this value.
off
02
and
01.
When 01 turns
chosen
to
+60V---.-1
act
as
a parallel reasonant
of
the resonant frequency. A wave-
WAVEFORM
flow
reaches
off,
through
approximately
the solenoid
circuit
with
the
4.5.6.2 Capacitor Discharge Circuits
After
C1, C2, C3, C4, C6,
C7
and
CB
have
charged
to
approximately 60 volts
charging solenoid current, resistors R61, R62, R64, R66 and R67
the capacitors
chosen
4.5.6.3
so
Shut-Off
Diodes CR39 through CR45
033
and cathode
from
conducting. This prohibits
R79 and
CR4B
to
shunt current away
will
be
that a time
Circuit
of
RBO.
This prevents
the cathode
at a 30
constant
volt
bias
at
the
time
of
about 275 microseconds results.
have
their
cathodes tied together and connected
zener diode CR4B. When the
current
033
from
of
diodes CR39 through CR45. In this
from
the solenoid drivers.
from
flowing
conducting and applies the voltage developed
of
the next discharge. The value
printer
is
turned on, the +5
through the voltage divider comprised
condition,
4-23
serve
to
bleed
volt
because
off
this charge
of
the resistor
to
supply prevents
of
the collector
of
across
zener diode
diodes CR39 through CR45 cannot
the dis-
so
that
is
of
034
resistors
Rev. G
Page 45
When the
volt
supply
of
resistors R79 and R80.
first
emitter
of
any
to
clutches
the solenoids
the collector
are
printer
output.
follower
of
033
released and paper movement
is
shut
off,
it
is
When this happens
033
is
turned on and shunts
of
each
solenoid driver
from
firing
during power
characteristic
034
turns on and
to
ground through diodes CR39 through CR45, preventing
turn
that
the 5
volt
current
the
zener diode CR48. This clamps the
off.
The Clutch and Line
supply
output
flows through the voltage divider comprised
Feed
through diodes CR36, CR37 and CR38. Therefore, during power
is
inhibited.
drops before the
base
Drivers
are
also attached
turn
off,
of
the
30
the
4.5.7
TERMINATING
THE
PRINTING
OPERATION
4.5.7.1 General
When the
is
detected at the
The high
left
one-shot
Line
data.
CI
P:
margin, (2) triggers
(if
the automatic line feed
Feed
(LF)
At
the end
head carriage
shift
register
(1) generates a
the
PRMOS one-shot generating prime
and Delayed Line
of
the
DL
YLF
low
reaches
output,
CI
R which activates the reverse clutch returning the
is
not
Feed
interval, however, the
the right
(RDCR
goes
limit
low),
disabled) causing the paper
(DLYLF)
interval, the
printer
print
during the carriage return.
When the
print
head
reaches
the
left
margin the low-going RTP signal triggers one-shot ME22-6
generating a 40-millisecond Delayed Clutch interval (DC L
from
turning
on.
4.5.7.2 Reverse Clutch Driver
for
Power
moving the
reverse clutch mechanism. Signal
on the Power Driver Board, unaffected
print
CI R from
head
from
right
the logic board
by
the optional
to
left
motor
switch (EOP
CIP
goes
condition,
printer
goes
T).
During this
is
transmitted
directly
control
goes
low)
or
high, turning
off
when a
the
print
CR
forward
head
character
clutch.
to
and (3) triggers the Line
to
advance one line. During the
remains busy and cannot accept
unbusy and data
time
from
can
be
both clutches
the main drive
received
are
prevented
motor
controls the reverse clutch driver
circuit.
the
Feed
to
a
The reverse clutch driver operation
Section 4.5.2, except
4.6 PAPER
MOVEMENT
Three separate
vertical tab. Each
(P.MSO
L), which in
of
turn
that
it
is
controlled
printer
functions
these functions
activates a clutch
by
can
causes
is
identical
a signal
cause
the paper
that
tractors.
For
each
line feed operation, the solenoid
is
a 60-90 millisecond line feed delay
generated
home before another paper movement operation
In response
continuous movement
appropriate channel
to
a
fo~m
feed
or
vertical tab command,
of
the paper. This paper movement
of
the vertical
format
paper tape. The operation
4.6.4.
Rev.G
4-24
to
that
of
the forward clutch driver described in
CI
R instead
of
CI
P.
a paper movement operation: line feed,
to
move
by
activating the Paper Movement Solenoid
mechanically links the
is
energized 15 milliseconds.
to
allow
theelutch
is
allowed.
adc
is
terminated when a hole
form
feed
motor
At
pawl and clutch mechanism
level
is
applied
of
the
VFU
to
is
form
feed, and
to
the paper feed
the end
of
this interval
to
return
the solenoid, allowing
is
detected in the
described in Section
Page 46
4.6.1
LINE
FEED (Figure 4-21,
Timing;
\
Figure 4-22 Circuit)\
The line feed operation
1.
After
Ell
shot.
2.
Receiving a line feed code (octal 012) - The
during data strobe, the trailing
The
width
milliseconds
generates
The trailing
the LF and D L
The
PMSO
by
low
edge
LF-----------15
PMSOL---
printing
is
connected) then the
of
means
LF generates
L.
The high
of
PM
YLF
intervals, the
a line
the LF pulse generated
of
R54.
PM,
PMSO
triggers' a 60-90 millisecond Delay Line
......
can
be
~enerated
of
characters
low
and
if
no paper time-out
L signal activates the line feed solenoid via the Power Driver board.
printer
remains busy.
mS==4~
by
any
of
the
following
(if
the automatic line feed
going forward clutch signal
edge
by
function
of
which triggers the LF one-shot.
any
of
these
condition
decoder generates a
two
conditions
Feed
two
conditions:
is
not
CI
P,
triggers the LF
is
normally adjusted
has
occured (PMTO
interval
DL
__________________________
I
I
I
disabled, E 10
low
DCLF pulse
is
YLF.
During
to
dne-,
low),
_
1
to
PM
both
15
DL
YLF---------...I~
BUSY
ACKNLG-------------------------------------~I~-----
Figure 4-21.
4.6.2 FORM FEED (Figure 4-23;
A
form
feed operation
1.
Receiving a
which generates a high
The resulting
solenoid.
can
form
feed code (octal 014) - The
low
VF
D signal then activates
Timing;
be
generated
SVFD
,,---
60-90
mS---+i·1
~I----------------------~PI---------
...
L
LINE
FEED
Figure 4-24, Circuit)
by
either
signal.
SVFD
TIMING
of
decoderform
allows the
PM
the
following
and
next
PMSO
____
I
I
::U::4
two
conditions:
feed signal FF
OSC'
to
set the
L which
acti~ates
_
IlS
sets
latch
VFD
flip-flop.
the line feed
LFF
2.
Pressing
which
the TOP OF FORM switch on the operator panel - This generates a
sets
the LF F latch and generates
PMSO L as
4-25
described in (1) above.
low
TOF
signal
Rev.
G
Page 47
::D
CO
<
:CA~;r-----'1
rW;E~O~
r~~;i----------------------------------------------------------------------------------------~
I
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I
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FROM
FIIO. & REV.
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AUTOMATIC
I
DRIVE
CLUTCH
CKT
~
~
I I
LINE
FEEO
OPTION
I
CIP
P7
J7 J5
P5
£10
Ell
CIP
+5V
o-""'Vt-
.....
-.I'VV'-
......
~
:
~--
~---m----:o:
-,-f
:a..-
___
---'-'-
___
-,
I
(FORWAKD
DRIVE
I I I :
E9
~
:
SIGNAL -CARRIAGE:
: : I A
I
IN
PRINT)
I I I I
tOY
L
_________
.1
JI
4
JI6
pi
DATA
1-
DATA
1...rl....fl
DATA
8
~TA8.....,.~L)1II11
I I
I I
I I
I I
I I
I I
I I
I I
I I
I I
I I
._--_.1
FROM
PRIME-';";';;'=";'';';';;;';;;..o
CKT
r~ffiM~~E~TiME~Tm----------------------'
I \
I
I
I
I
I
I
PM I PM
+12V
+5V
R35
ME6
":>o..::--------4--....J
TO
BUSY
CKT
Figure 4-22.
LINE
FEED
CI
RCU/T
.----.,
I
CONNECTOR
I
:
BOARD
~
J6 PlZ J12
W47
J9
--~---~
I I I
I I
~9
L
____
~
r-~-'
:
POWER
ORIVER
:
I
BOARD
I
I
PIO
I
L_...qJ-_J
I
I
~
I
JIO
W42
400.
35W
LINE
FEED
SOLENOID
<30V
Page 48
I n either case, the
This continues until a hole-
HL
The low
allows the next OSC' clock'to reset the
OSC' clock resets VFD which disables
DL
second
detected, PMSO L
YLF interval.
as
long
For
is
liighi
PMSO
L signal activates
is
detected
in
channel 7 of the paper tape,
PM
as
PMSOL
is
active, the.printer remains
immediately deactjvated.
and
HS
PMSOL.
the
line feed solenoid and generates a busy condition.
flip-flop and generate RSVFD. The following
The trailing edge
in
a busy condition.
4.6.3 VERTICAL TAB (Figure 4-23, Timing; Figure 4-24, Circuit)
at
which time signal H L goes low.
of
PM
activates a 60-90 milli-
If
a paper time-out
is
A vertical
vertical tab signal sets latch
Flip-flop. The resulting low VFD signal then activates
tab
operation
LVT
is
generated by receiving a vertical tab code -(octal 013). The decoded
which generates a high SVFD allows the next OSC'
PM
and
PMSO
L which activates the line feed
solenoid. . .
The high PMSOL signal activates
continues until a hole
detected
in
is
The low H L allows the next OSC' clock
OSC' clock resets VFD which disables
the
line feed solenoid and generates a busy condition. This
channel 5 of the paper tape,
to
PM
reset the
and
HS
PMSOL.
flip-flop and generate RSVFD.
The trailing edge
at
which time signal H L goes low.
of
second DLYLF interval.
as
long
as
For
detected,
PMSO L is
PMSOL
immediately deactivated.
is
active, the printer remains
in
a busy condition.
4.6.4 VERTICAL FORMAT UNIT
The vertical format unit (VFU) consists of a standard 8-channel (only two channels of which are
used) paper tape reader, located on
in
the
of the paper tape
feed tractors.
As
VF U is
a result, each line feed advances the paper by one line and the tape by one sprocket hole.
Each form feed function advances paper until the next hole
the
upper left side of the printer just under
caused by direct mechanical linkage
to
the gear train
is
detected
tape. Similarly, each vertical tab function advances paper until the next hole
the paper tape.
The following two paragraphs describe. the operation of the tape reader amplifiers
the amplifier tape channel amplifiers on Card.
1.
to
set the VFD
The
following
PM
activates a 60-90 milli-
If
a paper time-out
the
left cover. Movement
that
drives the paper
in
channel 7 of the paper
is
sensed
in
channel 5 of
in
the
VF
is
U and
LF~*~
VFD----;--
PMSOL--.....;....--
HL----~I
HS-----
DLYLF
______________
BUSY----.J
ACKNLG---------------------.
*VERTICAL
Figure 4-23.
......
~
__
--I
I I 1
TAB
~-------II
1--10
IlS
......
· .
TIMING
SAME
AS
ABOVE
FORM
FEED
AND
~
EXCEPT:
VERTICAL TAB TIMING
4-27
..... 1 ______
~10
IlS
--'F60-90
ms=I&..
-_ -
r~F~lvT
--L.J--
_____
4
IlS
_
_
Rev.
G
Page 49
r---------------------------------------------------~-
------------------------------------------------------
---~
CARD
fl
CHANNEL
5
AMPLIFIER
+5Vo--..--..,
R29
R31
CHANNEL
NO.2
~--__+..JV'R31/1°".....-----<·~~14.
PIN
3
R27
Q4
R28
!OVO-
......
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r coNNEcToR·1
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D~TA 8 .....,,~l)
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, ,
, ,
,
,
, ,
~!~~~~S
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PANEL~
CONNECTOR:
I
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I!
:
TOFRLF
wn'
_./
'W28
JI2
P12
Jo
,----lli--o-- • A
--
~-
-
--
: :
~~~MOF
: , : I
!iV
~.~:::.~
: : !
,TAPE
READER,
, , ,
, , , , .
TOF
, , PI2 J6
P6
:
AMP
CHI,
W62 0 __
-@------0-____DI-
__
....:C::.;:HA.:;.:N:;:NE;:..L.::.;NO:.:. • ..:.I
_____________
-I
, , ' , ,
L..--'---'_---'
, , P:2
J'6
P'6
:
AMP
CH2"W63
C
--.rcl----f4l.----
41---....:C::.;:HA:::.:N:;:NE;:..L.:;:NO:.:. • ..:2------------------------J
, •
T"
'T'
..
-----.1
'"
_____
..1
~~~mE~
'l
7.D
TAPE
READER
AMPuFiERs-------,
'UPi'Eq-
- - - - - - - - -
---,
lSECTlO!l
R3
I
L
___
--1
I
foWER-
-J:!?
I
ISECTION
II
I
I fiE118
II
:
MEll3
~
L
____
J I
~~==~==::Hr-
CHI
I
RZ
. I
+5V
0-..--.,
R2~
R26
CHANNEL
NO.1
~--_+-'\R""25,."......_---4·~~14.
PIN
5
R22
Q2
R23
!OV
o-
......
---_-----J
10
K
CLR
l[
8
TO
LINE
FEED
CKT
I
CHZ
~
_____
~~
__
~~~::~::~_~~:
___ ~ L
____________________________
••
________________________________________________________________________________
_
Figure 4-24.
FORM
FEED
AND
VERTICAL
TAB
CI
RCUIT
Page 50
4.6.4.1 Vertical Format Control Tape
Reader-
(Figure 4-24)
Since the circuits
Form
Feed
channel
When
light
from
to
conduct. The current through the
follower amplifier
by
02
and applied
02
to
4.6.4.2 Vertical Format Control
Since the amplifiers
channel one
off
and supplies
zero voltage
senses
of
01
off
02,
to
the
4.6.5
will
be
base
across
a hole, current flows through R22 and R23
is
approximately ground, shunting the current through R24 away
and allows its collector
base
of
01 maintaining 01 turned on.
LINE
FEED
Signal PMSOL
and
CR28
to
ground. The diode
the line feed driver in the
current,
Line'
limited
Feed
Solenoid. When signal
by
for
is
described.
the Form
Feed
the L.E.D. (ME 118)
photo
(2SC4580). The current
the Form
Feed
(channel 7) amplifier on Electronic Card
Amplifiers
used
for
both the Form
described. There
current
it,
allowing resistor R24
to
SOLENOID
from
Card 1
off
condition. When
R38, flows
into
is
02
through resistor R24.
to
be
held at +5 volts through resistor R26. R25 then supplies current
DRIVER
is
normally
drop
of
transistor
PMSO
L returns low, transistors
and Vertical Tab tape reader channels
is
sensed
by
transistor creates a voltage drop across R 1
from
the emitter
(Figure 4-24)
Feed
normally
no current flowing
to
maintain the
into
(Schematic - Section
low
(inactive). In this state,
CR27 balances the diode drop
PMSO L goes
026,
turning
then appears across CR24, which provides a current path
is
dissipated.
are
the photo transistor
of
the
photo
(PH
1 0), the transistor begins
transistor
#1.
and -Vertical Tab channels
into
the
base
02
then turns on and develops approximately
base
of
01
at ground. When the tape reader
the
base
of
01,
thereby
from
the
are
of
02.
turning
base
7)
current
of
CR28 thereby maintaining
flows through R39
active high, CR28 saturating it. The
it
on
and causing
027
until
the magnet field
and
current
026
to
turn
off.
of
the line feed solenoid
identical,
and
is
identical,
only
turns Qnemitter
then amplified
only
This keeps
it
on. The collector
of
02.
This turns
collector
flow
through the
The
flyback
the
01
voltage
4.7 SPECIAL FUNCTIONS
I n addition
the
following
4.7.1
BELL
Reception
the
BELL
one-shot' generating a 1
multivibrator
on Card
1.
The speaker
During this
BSP
signal. This generates a high
to
the paper movement and character printing fu nctions, the
special functions: Bell, Delete,
(Figure 4-25)
of
a bell code (077)
ME10. The 2 KHz
is
located at the rear
same
time, the
to
2 second
output
low
ORBZ
Paper:
Empty,
or
detection
from
of
DCBL
of
a paper empty
BELL
ME10
signal. This
is
then applied
the printer.
or
PE
followed by the high
which creates a BUSY
4-29
printer
also performs
and-Motor Control '(optional).
condition
BELL
signal turns on
to
the speaker through
BELL
(PE
goes
output
05
generates a
condition.
low) triggers
enabling
06
and
07
low
Rev.G
Page 51
:lJ
CD
<
r-------------------------,
I . .
II
TO
r--
_______
9~
P5
BUSY CKT.
10
BSP
Y (CARD
#2)
FROM
PE
PAPER
OUT
CKT.
1 A
Q 13
ME11 CONNECTOR
ONE
r---,BOARD
+11V
SHOT
I
z600
I
MSEC
I
6 2
74123_ 4 BELL
I I
~
.....
--=-tB CLR
Q~--.;~=-t
• I .
I
±OV
3
-----
ME10
P6
J6 J4
I DCBL
2KhzOSC
~-~-
SPEAKER
I FROM
POWER
PRIME SPEAKERI I I INTERFACE
FUNCTION FROM PRIME I I I CONNECTOR PIN
I DECODER CKT. I I I
L
_________________________
.J
L
__
J
Figure 4-25.
BE
LL
CI
RCUIT
Page 52
4.7.2
DELETE
code
then
The delete code
causes
causesl
the
function
DE L to
is
used
to
reset the control logic,
decoder
go
high, triggering the PRMOS one-shot. This initiates a prime
to
generate a
in Section 4.3.1.
4.7.3 PAPER EMPTY (Figure 4-26)
The paper
in the printer, a high
When the
printer
panel and activating the
paper-out
paper
OVE R R I
PE.
condition.
empty
To
continue
DE
This allows
4.7.4 MOTOR
With the optional
empty
PAPE R OUT
runs
out
PE
The
condition
exists.
printing
switch on the
printing
to
CONTROL
condition
is
controlled
input
of
paper, switch
signal. This high
low
PE
signal activates the bell and activates the BUSY line
on the last
front
panel removes the
continue
until
(OPTIONAL)
motor
control feature,
any 9-second interval, a solid-state switch
form feed motors. The dc voltages
turned back on
location
diagram.
by
the
next
print
Figure 4-12, and I nterconnection Diagram, Figure 4-13 and a
to
the
or
paper movement command. (This section includes a Central
4-14).
same
as
a prime
low
DE L signal. The trailing
by
normally-open PAPE R
is
applied
S2
form
the FORMS
to
Card 1 generating a high
closes, turning
PE
signal
goes
on
the PAPE R
to
the interface connector
during a paper empty
low
PAPE R OUT
OVERRIDE
condition,
input
switch
- Figures 4-27, 28, 29
if
no
print
or
paper movement command
is
deactivated which removes the 115
printer
electronics
are
not
affected. The motors
condition.
edge
Reception
of
Data Strobe (DSTA)
condition
OUT
switch S2. With paper
PE
and a
low
PE
OUT
lamp on the
to
indicate a
as
long
pressing the FORMS
to
Card 1 deactivating signal
is
released.
is
received during
VAC
from
the drive
are
timing
diagram Figure
of
a delete
as
described
signal.
front
as
the
and
automatically
Circuit
One-shot ME3 generates a 9-second interval during which
and
the Paper Movement signal (PMSO L)
of
these
print
or
paper movement commands, the solid-state switching
ing 115
movement signal, then the switching
print
of
(CR3, 4,
LED
VAC
to
the motors.
If
the 9-second interval
circuit
or
paper movement command automatically turns on the motors.
The solid-state switching
an
optically
emitter
coupled isolator (ME 1), a silicon controlled rectifier
:5,
6) and a triac
an
photo
(01).
darlington sensor. The triac
circuit
ME
1 provides isolation and
oriented in opposite directions. Across
preventing the line voltage rate
The
activate the
The leading
to
go
high
ME2. Th
turning
by one
(01)
current
is
it
on.
half
switching
to
following
motor
for
a 9-second interval. The resulting
turns on ME2, oausing current
Wi~h
of
the
it
02,
turning
discussion
control
edge
of
02
conducting, thus
AC
line voltage and
to
the
ON
it
off.
of
change
assumes
circuit
FWDCLD
state.
to
turn
or
01
then shunts current away
Current then flows through 01
time
Forward Clutch signal (FWDCLD)
are
monitored. During any 9-second interval generated
circuit
is
exceeded
is
deactivated removing 115
is
connected in the 115
01
is
basically
01
are
R9
and
C7
from
turning triac 01 on
that
the motors
are
without
VAC
VAC
power line
SCR
(02),
is
used
as
a switching network, containing
two
SCR's connected in parallel and
which comprise
without
off,
therefore, FWDCLD
receiving another
an
a valid gate signal.
on the motors.
PMSOL triggers the one-shot causing the
low
on M35, pin 8 appears on the cathode (pin
to
flow
from
ME2 pin 4 (emitter)
"shorting"
passed
by
the full-wave bridge rectifier, a current pulse, produced
the
"shorted"
rectifier, flows
from
the rectifier, thus reducing the principle
to
the motors
for
by
is
activated, thereby deliver-
print
or
from
the motors. The
to
the motors.
It
consists
a full-wave bridge rectifier
RC
into
into
that
snubber
output
the gate
the gate
half
network
or
PMSOL must
at
ME1
of
SCR
of
the triac
of
the
AC
pin
2)
of
02,
signal.
one
paper
next
an
for
3
4-31
Rev.G
Page 53
:D
Cl)
<
+5V
FRONT
<;>
PANEL
I
,..
___
1
___
.....,
,....
___
, I PAPERI
IPAPER OUTI I FORMS
OUT
I
ISWITCH
IOVERRIDE
LAMP
W24
I
c("';
1~1J25
SWITCH W73 I
: I
S2
I
S1
W26 I
: L
___
-J
I I
O±OV L
______
...J
CONNECTOR
BOARD
r---,
I I
I I
I •
J12 P12 J6
CARD
#1
r-----------,
I
I
I
•
P6
K --0-----0-- J
K
I I
I I
I I
L
__
.J
L
__________
--1
Figure 4-26. PAPER EMPTY
CONNECTOR
BOARD
r----,
I I
I I
I •
J6 J4 TO .
-~INTERFACE
II
II CONNECTOR
I I
L
___
J .
Page 54
PIN
(HF-87)
FEED
COVER
HARNESS
ASSEMBLY
{63002590
63002593
63011152
UPPER
(HF-76)
PAPER
PAN
*USED
ON
EA~LlER
MOTOR
MODELS
A
--------------~
Figure 4-27. LOCATION OF MOTOR
CONTROL
BOARD
VCC
El
o-----f
PMSOL
O--"";"';;;"--f
E2
E3U-.;...;:!:.0_V
E5o-F_W_DC_LD_~
E80------1
E9
ElO
El6 -
E12
E17 I DELFWD
EI4O-----f
El5
__
AC1
AC2
TRIG
o--DE-L-FD"";"I---1
PMSOLR.
FWDCLR
TRIG
1 1
2 2
-f
3 3
5 5
8 8
9 9
1
10 10
11 11
12 12
13
14
2
15
.W
..
.:.;10:.=2.!..:(0:.:,:R.:..:..!N/-=B,=.:LU:..!.)
r-
.W
..
.:.;10:..:.4....:(~B,=.:LU~/.:.:.:RE:.::D~)
r-
WI0?
~06
.-..f-----=-~-
1
13
W46
14
] I I
15
(BLK/RED)
(WHT/PUR)
WI0l(WHT)
WlOO
(WHT)!
(BLU/BRN)
(HE-85)
CHASSIS, RIGHT
CONTROL
.......
W_6_5
...;,(_OR_N;.../Y_E....;L);..j-~ BOARD
~W;;.;10;.;.5....;(~B;;.;LU;.:./..;.;RE;.;;.D.:,j)
.
W51(BLK/YEL'
W80
.... --.............
(BLU/RED)
J9
$P9
14 -14
12 -12
CIRCUIT
INTERFACE
CONNECTOR
\r-----~
J12
- - I
-
/-
21
P12
13
---
13
-4
4
~--
- G I
~--
21
CONNECTOR
+5VDC
P~1S0L
+OV
- -
- -
3
~--
3
-
(BLK)
...---.--.-----.TRANSFORMER
I
r
POWER
D'RIVERj
BOARD
FWDCLD
L
______
241 1 STRI
I
I
I
L
____
...J
I
I
I
l=
~
I
~o-I
0:
a:::
I..LJccwl
::E:
3:
::-
;';d5~1
-u..o
J
115
MAIN
TERM.
VAC
MOTOR
P.
!
I
Figure 4-28. MOTOR
CONTROL
BOARD INTERCONNECTION
4-33:
DIAGRAM
Rev.G
Page 55
When the
flows
to
polarity,
AC
line current
the bridge rectifier
turning
it
on
to
pass
is
zero, 01 turns
turning
this half
02
off.
back on. This action,
of
the
AC
signal
As the
to
the motors.
next
half
as
before, pulses
of
the AC signal appears, current
01
but
with
the opposite
again
The above operation
state
to
the ON state,
Coincident
high
output
signal
of
is
received, the signal
with
ME 1, pin 3 triggers Delay one-shot ME3, which generates a
keeps
repeating itself during the 9-second interval, switching
for
either
polarity
the activation
is
inhibited
of
of
voltage applied
the
motor
from
generating
control
to
the main terminals
circuit
DE
from
LFWD
by
an
this
OF F
to
low
at ME3, pin
low
being applied
of
an
01
01.
ON
condition,
from
1.
If
:0
ME4, pin
the OFF
the
a FWDCLD
4 and 9. When one-shot ME3 times-out (approximately 250 milliseconds later), FWDCLD generates a
DE
LFWD signal which activates the Forward
received. The purpose
is
activated.
If
another FWDCLD
leading
edge
re-triggers one-shot ME 1
of
the delay
or
is
to
PMSOL signal
for
one-shot ME2 remain unaffected during this time. Therefore, the 115
the motors and,
if
a FWDCLD signal
was
or
Reverse
allow
the main
is
received during a 9-second interval (motors ON), the
Clutch Driver, depending on which signal
motor
to
reach normal
speed
before the clutch
another 9-second interval. The solid-state switch
VAC
keeps
being supplied
received,
it
is
gated
directly
to
the clutch driver
and
Delay
without
was
to
being
delayed.
If
no FWDCLD
causing its
turn
stops current
flow
from
output
the bridge rectifier
or
PMSOL signal
MEl,
pin 3
flow
out
is
received during a 9-second interval, one-shot ME3 times-out
to
go
low. This turns
of
ME2, 4 and prevents
to
pu
Ise
01.
Therefore,
off
02
ME1
from
01
by
delivering a high
turning on. With
does
not
conduct, removi
to
ME2, pin 2, which
02
off,
there
ng
115 V AC
is
no current,
from
the motors.
No
further
one
of
theses signal inputs being active
and turns on the motors, and
is
delay approximately 250 milliseconds then gated
action occurs
until
another FWDCLD
causes
2)
triggers Delay one-shot ME3.
a high at ME3, pin 3 which:
or
to
the Power Driver board.
PMSOL signal
If
a FWDCLD signal
is
received.
1)
activates the switch
At
was
this time, any
circuitry
received, the signal
RmtD
(I02A
9-SEC
ONE-SHOT
(MEl-3)
SOLID
STATE
CONTROL
(~lE5-6)
DELAY
ONE-SHOT
(ME3-1)
DELREV
(102A
*ACTIVATION
VERTICAL
ARE
SENT
BE
SPACED
FWDCLD
~-------i
ONLY)
PMSOL*~
________
r--LESS
LESS
9
THAN 9 SEC
THAN
SEC
~
f-----
I-
TIME-OUT
SWITCH
ON
INTERVAL
OFF
ON
I
:I..i---_
DELFWD
~~~----~u~------------------------~-~l-------
ONLY)
OF
THE
TAB
TO
300
PMSOL
AND
FORM
THE
PRINTER
MILLISECONDS
________
SIGNAL
DEPENDS
ON
FEED.
IF
DURING A MOTOR-OFF
TWO
APART.
THREE
CONSECUTIVE
CONDITION,
Figure 4-29, MOTOR
DELAY
-MOTOR
FUNCTIONS:
LINE
ENABLES
TO
NORMAL
SPEED
LINE
FEEDS
THEY
SHOULD
CONTROL
_______________
REACH
FEED,
TIMING
~
I
~
Rev.
G
4-34
Page 56
4.8
POWER
SUPPLIES (Figure 4-30, Schematics - Section 7)
The complete power
input
(115
VAC,
60Hz)
logic
circuitry.
The standard
printer
can
be
wired
connections on the
In addition,
be
changed
The
input
for
to
a 50Hz pulley HB91-1 (Part No. 525344001).
voltage
printer
multitap
to
for
other
a 50Hz
is
fused
distribution
the
DC
is
pre-wired
input
50/60
input
by
through connector P13-J13 and the
bracket
from
via the optional
to
the electronics cavity filters any transients generated
The 115
the 115
The secondary
VAC
to
drive the main
VAC
primary winding, terminal 24
motor
control
of
the
switch, which provides automatic
multitap
35
26.5
11
circuit
voltages developed
at
the
for
the
factory
101
is
shown in Figure 4-30,
by
the internal power suppl
for
115 VAC, 60Hz. However,
from
ies
for
as
the primary
driving the
an
option,
the
voltages. Schematic No. 63001105 in Section 7 shows the necessary
Hz
transformer (T1),
voltage, the 60Hz
a 5 amp slo-blo fuse (F4) and applied
ON/OFF
motor,
switch on the
form
feed
of
motor
motor
the
for
various
input
voltages (either 50
pulley HB-91 (Part No. 525841001) must
(See
Figure HB, Section 8).
to
the
input
transformer
front
and
multitap
panel. A line
by
the switch
left
and
transformer. The 115
ONIO
F F
filter
or
right
cooling fans
control
located on the fuse
transformer.
VAC
of
the
motors.
or
60Hz).
is
obtained
is
applied
transformer develops the following voltages:
VAC
center-tapped
VAC
VAC
These voltages
The 35
+5V
regulator (via connector J 1-P1) and
input
voltages
from
these three power supplies
The 26.5
VAC
VAC
are
delivered through connector J13-P13
and
11
VAC
voltages
are
rectified, filtered and regulated, then sent
is
also obtained through J 13-P13 and
driver board.
4.8.1
CR
and
additional filtering
resistor allowing some current
+5V
The
REGULATOR
11
VAC
output
(SCHEMATIC No. 63011143)
from
the secondary winding
1, CR2, CR3, CR4 and filtered
regulated
by
regulator element ME 1 which maintains the
for
high frequency transients
flow
Overvoltage protection
is
provided by components CR5,
Zener diode CR5 inhibits current
the
on
output
SC
voltage exceeds
R Q
1.
This shorts the
+6.8V,
input
to
their
respective power supplies.
are
sent through the connector board and
to
the
+12V
and -12V regulator (via connector J2-P2). These
to
are
also sent via the connector boaru
used
to
of
the transformer
by
Cl
located in the cavity. This filtered
that
might appear at the
through the regulator keeping
flow
through R7, holding the gate
the logic cards. The regulated dc outputs
to
the optional interface board.
generate
+5V
+35V
output.
is
rectified
Capacitors
output.
it
in the active region.
R7
and
01.
With the
of
SCR
used
unregualted
by
output
is
Resistor R8
output
01
at
ground. However, when
the Zener diode CR5 conducts, developing voltage across
and blows fuse F
1.
as
inputs
for
to
the
the power
bridge rectifier
fused through F 1
C4
and
C5
provide
is
a bleeder
at a normal
R7
and
turning
+5V,
4-35
Rev.G
Page 57
:0
co
<
115
VAC
60
HZ
MAIN
FORM
MOTOR
FEED
MOTOR
TRANSFORMER
r -
-TAANSFOru.,ER-
-1
TERMINAl
\ I Tl I
STRIP
. I
I
I
I
115V
CONNECTION
I
I
SHOWN
ONLY.
I
I
SEE
SCHEMATIC
I
I
163001105
FOR
I
t
~~~
;,o!N~C~I~N!.
J
J13
W4
7
W3
W8
8 _
p------------------~
:
~m~ONICS
Fl :
I I
I I
I I
L______
_
__
~
..
---_..1
I--.:....::....-....;....;;.::.:...~T
=
~ } ~~:E:D~RIVER
I :
BOARD
L
__________________
~
Figure
4-30.
POWER
DISTRIBUTION DIAGRAM
_~J:
!
+5
VDC
_ 1
l&lIC
CAROS
-I
J
:
- 3
- 4
- 5
- 2
+12
VOC
TO
lOGIC
CARDS
Page 58
4.8.2
+12V
and -12V REGULATORS (Schematic No. 63002308)
The voltage generated
the
+12V
and -12V regulators. The operation
described in Section 4.8.1.
4.8.3
to
+35V
The 26.5
generate the
POWER SUPPLY,
VAC
output
+35V
unregulated voltage
in the elctronics cavity. The
driver board via connector
by
the
35
UNREGUALTED
from
the transformer
+35V
output
P13-J
13.
VAC
center-tapped secondary winding
of
both circuits
is
identical
(Schematic No. 63002307)
is
rectified by diode bridge MD 1 and filtered
for
the power driver circuits.
is
fused through F5 and
used
of
T1
to
that
of
All
of
these components
as
a voltage
is
used
the
input
+5V
as
input
regulator
by
to
the power
to
R 19-C15
are
located
4-37/4-38 Rev.G
Page 59
Page 60
REMOVAL,
SECTION 5
REPLACEMENT
AND
ADJUSTMENT
PROCEDURES
5.1
INTRODUCTION
This section describes the operation, removal, replacement and adjustment
anical assembly in the Series
5.2
MECHANICAL
The mechanical assemblies and their reference figures
Mechanical drawings, and parts lists, are contained in Section 8
Section
5.2.1
5.2.2
5.2.3
5.2.4
5.2.5
5.2.6
5.2.7
5.2.8
5.2.9
5.2.10
5.2.11
5.2.12
5.2.13
101
printer.
ASSEMBLIES
Cover
Carriage Mechanism
Driving Mechanism
Spring Drum
Damper
Frame
Paper
Pin
Feed
Form
Feed
Feed
Ribbon
Hardware, Electrical
Paper Guide
Print
Head
are
Title
Mechanism
Unit
Mechanism
Feed
Mechanism
and Associated Assemblies
covered in the order listed below.
of
this manual.
of
each
major mech-
Figure
Reference Parts
Symbol
Figure A
Figure
HA
Figure HB
Figure
HC
Figure HD
Figure
HE
Figure HF
Figure
HG
Figure HH
Figure HI
*Figure
HJ
Section 2
Figure 8-12
*Part List
5.2.1 COVER (FIGURE
only
A)
5.2.1.1 Operation
All
covers
permit
internal
access
to
the printer, and
5.2.1.2 Removal/Replacement Procedure (Refer
1.
Pull outward and down,
2.
Remove cover assembly, rear {A-7}
with
internal lockwasher (A-41),
3. Remove
front
cover assembly (A-5)
left
cover assembly (A-4) and
by
nut
by
at (A-26) (A-34) and (A-35). Remove at
from
frame (HE-1).
are
completely removable.
to
Figure 8-2)
right
cover assembly (A-3).
unscrewing
from
each
side
of
cover,
standoff
(A-32) and ball stud (A-19).
removing screws, flatwasher and split lockwashers
two
corners: A-27, A-34 and A-35.
Lift
cover
(A-39)
5-1
Aev.G
Page 61
CARRIAGE
MECHANISM
NOTE
Before removing
elevate
top
clear printer head, and slide the
cover assembly forward
ribbon
the video
to
cables which
amplifier
the
power driver board 63002242-4001
front
cover assembly,
cover assembly (A-6)
to
avoid damaging
are
connected
board 63002668-4001
to
front
from
(Fig. 8-14).
4. Disconnect power cable (Refer Section 7, Electronic Cavity 63001105-1, item 9, and
Fig. 8-2)
from
base
(A-2) by removing screw, flatwasher and
split
lockwasher
(A-34), (A-35) and bracket (A-20).
5.
Disconnect connector (A-16)
from
mating connector (HJ-46) at rear right on main frame
(HE-1).
6. Remove screw (A-31)
7.
To
remove side covers (A-3, A-4), remove
from
ground strap (A-50).
snap
rings (A-21) and push, pins (A-14) through
hinges.
8.
To
remove the
at (A-26), (A-34), (A-27) and
9.
To
reassemble, reverse order
base
(A-2)
from
main frame, disassemble remaining hardware
lift
main frame
of
disassembly beginning
from
base.
with
step 8.
5.2.1.3 Adjustments
(A~25),
(four
places)
Side covers (A-4, A-3)
adjustment
at
ends
5.2.2
of
covers, in relation
of
standoffs (A-39),
CARRIAGE
MECHANISM
lock
into
if
required.
speed
to
base,
(FIGURE
clips located on inside walls
adjust length
of
ball stud (A-19)
HA)
5.2.2.1 Operation
The
function
characters against the platen and
position
after
The carriage (HA-9)
rollers (upper and lower) (HA-26, 31)
(H E-23). The
back and
forth
the head penetration adjusting knob (HA-32). The adjustment
copies
to
be
locks the eccentric shaft after positioning head in relation
and carriage can
positioned
by
switch (H E-78), a magnet, mounted on lower
a signal
to
indicate the carriage postion
of
the carriage mechanism
to
move the head
printing
the last character.
has
two
guide rollers (upper) (HA-10), a guide roller
to
print
'head (HA-1) mounted on the carriage,
up
to
1 mm (O.039-in.). This adjustment
run. The head lock-knob (HA-33)
be
eliminated
by
gib (HA-45) which
is
to
hold the carriage on the guide bar (HE-8) and guide plate
is
set-screws (HA-48). When the carriage
portion
to
electronic logic.
hold the head under the best
from
left
to
is
held
is
made
mounted
o,n
to
platen. Play between head bracket
is
fixed on carriage
is
positioned over the right
of
carriage, closes the
right
and return
by
four
by
turning
is
determined
the
left
of
covers.
with
unit
screws and
an
by
hand side
by
two
reed
For
perpendicular
nut
(A-32) located
condition
it
to
to
print
the starting
(HA-21) and
is
movable
eccentric shaft on
the number
of
the carriage and
of
screws (HA-46) and
or
left-hand
switch and
reed
sends
two
Rev. G
5-2
Page 62
The carriage
through HA-64
absorb shock on the
is
are
mounted
moved
by
the main driving
on the underside
belt
tension and linear alignment.
belt
(HA-36). Parts HA-41 through
portion
of
the carriage. These parts are designed
HA-44
The ribbon guide roller (HA-5), mounted on the carriage and head bracket (70), holds the ribbon
at
proper position
of
the
video
the
timing
fence (Fig. 8-8/135).
insurin~
amplifier
proper tension on the ribbon
ass'y and supports the video
while
circuitry
printing.
for
print
Bracket (50)
registration in
is a part
conjunction
5.2.2.2. Removal/Replacement Procedure
Head
A.
For
removal·and installation
B.
Carriage (HA-9)
1.
With carriage
2.
Remove complete damper
3. Remove video
4. Loosen head
roller (H 1-111)
ribbon
at
mid-position, remove main driving
amplifier
lock
by
from
ribbon guide roller (HA-5).
of
print
head, refer
unit
by
removing screws (H
and bracket (50)
knob
(HA-33) and slide head back
turning
head adjusting
to
Section
5.2.13.2.A.
belt
(Se·e
next
para. C.).
0-29).
by
removing screws, washers (55,56,57).
from
knob
(HA-32).
platen
Release
to
clear guide
ribbon
from
CAUTION
and
HA-58
to
with
AVOID
CASE (HE-78) WHEN
FROM
·5. Move carriage
6.
To
install carriage, reverse above procedure.
C.
Main Driving Belt (HA-36)
To
remove belt,
1.
Loosen
a.
nut
Release
(HC-10)
unwind
2.
Remove nuts, washers (HA-64, 63, 63) on shaft (A) (HA-59).
NOTE:
It
(HA-58) attached
is
DAMAGING
LEFT
REED
CARRIAGE
LEFT
to
perform
SIDE
left
and remove
the
OF
following
MACHINE
it
from
steps:
(HC-12) and screw (HC-11) on spring
main spring (part
to
with
not
slowly
necessary
unwind
considerable noise, a normal occurrence).
of
HC-1) tension by
internal spring. (Note,
to
remove screws, washers (HA-41, 43) and
to
underside
of
installation.
3. Remove
left
nut
(HA-44)
from
screw (HA-43)
end wrench.
4. Using
(HA-43).
5.
Remove
6. Continue
printer
chassis and
millimeter
Belt
left
end
to
pull entire
will
of
open-end wrenches, remove remaining
separate.
belt
by
belt
feeding
to
the
through
right
out.
two
10
7. I f necessary, loosen clutch field assembly tabs (part
to
8.
printer
To
of
spring
install
base
and feed belt
belt,
reverse above procedure
drum
(refer
to
para. 5.2.4.3).
out
through
but
SWITCH
IS
IN
NEXT
AND
REMOVED
STEP 5.
guide bar and guide plate.
drum
(HC-1).
intermittently
that
spring may suddenly
carriage except
with
left
hole in
feeding
the
it
through hole on
tabs.
first
start
for
new assembly parts
a 10
millimeter
base
of
printer
of
H B-140) (F ig. 8-5) attached
with
applying tension on spring
pivoting
Holder
(O.4-in.) open-
two
nuts
chassis frame.
right
pawl
from
side
(A)
screw
of
,.
5-3
Rev.G
Page 63
D. Guide Roller and Guide Roller
1.
To
remove guide roller
a complete assembly.
To
2.
remove guide rollers
5.2.2.3 Adjustments
A.
To
Adjust
1.
Play Between Carriage and Guide Bar (HE-8)
Adjust
nut
the distance between carriage ( HA-9) and guide plate (H E-23)
(HA-29) and
mm (0.0004-0.0012-in.) between upper and lower rollers (HA-26, HA-31) and the
guide plate.
2.
The carriage,
without
bar (H E-8) and guide plate
Note,
that
the guide
manufacturer
B.
To
Adjust
1.
Play Between Carriage and
After
loosening screws (HA-46) and nuts (HA-49), adjust play by positioning gib
(HA-45)
should
with
be
able
Unit
(HA-10, 21)
unit,
turning
prior
remove bolts (HA-22). This
from
carriage, remove
nut
(HA-20) and spring washer (HA-19).
or
eccentric axle (HA-25)
to
allow
main driving belt (HA-36), should
with
no more than 100 grams (3.5 ounces) tension.
roller
unit
to
shipping,
(HA-21)
if
Head
is
adjusted
a carriage
is
Bracket (HA-1)
to
be
unit
may
Guide Plate (HE-23).
gap
of
0.01 through 0.03
be
able
to
to
the carriage (HA-9)
readjusted
or
set-screws (HA-48) and then tighten screws and nuts.
to
move
smoothly
using head adjusting knob (HA-32).
be
replaced
by
loosening
as
move on guide
by
the
replaced.
Head
bracket
C.
To
1.
D.
To
1.
2.
3. Ensure
Adjust
Ribbon Guide Roller (HA-5)
The eccentric shaft (HA-6)
of
the bracket
to
the farthest
53.50 mm (2.1-in.)
Adjust
Tension
of
Main Driving Belt (HA-36)
Remove main driving
and pushing
down
on belt.
belt
(HA-44) on screw (HA-43)
No.2
for
belt
tension specifications.
For
the Model
a.
b.
c.
Main belt
Carriage
At a point
101
Series, apply main belt tension
is
attached
is
at start position, (at rest).
midway
reverse clutch on the right, deflect
(0.35-0.43-inch) using
d. When correct tension
that
carriage returns
(See
para. 5.2.4.3).
is
used
to
make this adjustment
point
of
tangency on roller, the dimension should
( HA-36)
Adjustment
with
to
between spring
has
from
from
holder (HA-58) by loosening nuts (HA-64)
of
tension
can
now
10 mm (O.4-in.) open-end wrench.
by
the
carriage.
drum
assembly (HC-1) on the
top
of
belt
upward 9-11 millimeters
an
upward pull equivalent
to
been attained, reverse step in para. D.1.
any
run-out
position under spring
from
the
mounting
be
made
by
turning
See
next
following
method.:
left,
500
grams, (17.6 ounces).
drum
face
be
nuts
step
and
tension.
Rev.
G 5-4
Page 64
5.2.3
DRIVING
5.2.3.1 Operation
MECHANISM
(FIGURE
8-4
AND
FIGURE
8-5)
A.
Motor
Drive Chain (Figure 5-1)
Driving power
Motor
Motor
- intermediate gear
- intermediate
- pulley (HB-60)
therefore, pulley
reverse clutch actuates
carriage.
of
motor
for
for
(HB-98)
for
pulley
reverse clutch. Looking
is
transmitted
toforward
forward clutch (HB-30) -
with
gear (HB-22) - intermediate shaft
from
front,
and reverse clutches
pulley
motor
reverse clutch rotates counterclockwise. When either
by
signal, pulley (HB-63)
for
main driving
,
HB-63
MAIN
PULLEY
as
follows:
(HB-60)
with
for
forward
riveted
clutch.
pullev
rotates counterclockwise;
belt
forward
rotates
to
or
move
(146)
Figure 5-1. SERIES
B.
Clutch
Alignment
order
load
rotor
spring
Alignment
of
is
reverse
condition
(HB-141) no
(H
B-144) pressing against the fixed, forward and
and
clutches
clutch
(surface
gap
Function
is
as
follows: Viewed
assembly followed
to
surface contact) between splined armature (HB-142) and keyed
adjustment
its splined armature (HB-142).
The armature hub (HB-143) inserts
either forward
about its shaft (H B-50)
assemblies (HB-140) and
logic
to
coil in
or
reverse drive. Clutch field assembly (HB-140)
by
means
mount
forward
or
reverse clutch field assembly, the magnetized
holds the splined armature (HB-142), and
pulley
armature and
ition
(HB-60) (forward
rotor
is
(surface
to
surface contact).
or
reverse). When signal
discontinued, and the armature
101
DRIVE
TRAIN
(Fig. 8-5)
from
the
front
of
by
forward clutch assembly.
is
required. Slight tension (preload)
rev.erse
into
the splined armature maintaining
of
tabs
(See
Fig. 8-5, A and
to
the
printer
base.
friction
When a signal
torque
current
is
stops,
is
restored
transmitted
the
printer
(right
Because
is
maintained
side), the
of
a pre-
by
driving pulley (H B-60) and
is
B)
that
torque
to
torque
prevented
extend
is
sent
from
rotor
to
shaft and drive
chain between
initial
preload cond-
drive
from
rotating
from
field
electronic
(HB-141)
a
for
5-5
Rev.
G
Page 65
DRIVING
C.
MECHANISM
Operating Conditions, Drive Mechanism (Figure 5-2)
Alternate forces
belt (HA-36) and
and reverse clutch
normally handled
pulley driver (HB-92) installed
are
exerted on
motor
timing
by
the
timing
(HB-98)
peaks. These variations in the power transmission route
use
of a motor
to
belts (HB-48, and belt 49) including main drive
because
protect
of
inertia
clutch plate (HB-98) (part
belts and
of
print
motor.
head carriage and forward
are
of
motor)
and
motor
Normal cycle
alternate dropping and raising
Therefore, all drive mechanism parts should
procedures where applicable.
5.2.3.2 Removal/Replacement Procedure
A. Main
Motor
Mounting Hardware and Parts
Steps A.1. through A.5.
1.
Remove
2.
Remove right and left-hand shaft bushing holders (HI-130, 133)
(HI-131).
3. Remove
4. Loosen set-screw (HI-19) on driving bevel
5.
Remove shaft (HI-103) and washers (HI-104).
Steps A.6. through A.7.
6. Loosen
travel.
7. Remove
main
time
of
carriage and machine operating sounds
(HB-98) (With Covers and Rear Electronic Cavity Removed) (Retain all
are
keyed
right
and left-hand bevel
snap
rings
(H
1-1
are
keyed
nut
(H
B-19) and back
four
attaching screws (HB-17)
motor
with
mounting bracket (HB-9).
time
of
torque
be
if
Replacing
to
05) on both ends
to
off
Motor)
Figure HI
gears
(H
Figure HB (part
belt
tensioner
from
are
directly
on clutches, which also affect
properly adjusted using recommended
1-27)
by
loosening set-screws (H 1-29).
of
shaft. Retain parts.
gear
(HI-18).
1)
bolt
(H
B-18) up
underneath the
printer
influenced
belt
tensions.
by
removing screws
to
maximum
base
and remove
by
B.
Rev. G
Refer
to
Printer Wiring Diagram in Section 7
A.10.
if
motor
8. Cut
when
9. Remove ground lug attached
10. Unsolder
if
motor
11. Remove
external washers
Main
Motor
When main
same
time.
1.
Remove and discard main
pulley (HB-110/111)
by
removing
mounting
is
being
two
wires (red), No.
motor
is
two
is
being replaced. Insulate wires, when
motor
Belt Removal
motor
is
nut
hardware.
replaced~
wi
newly installed.
wires (yellow) on
from
mounting bracket (HB-9)
(H
B-12 and 11).
(H
B-48)
replaced,
and washers (HB-28, 29) at
by
it
motor
first
for
wiring diagram in steps A.8. through
8 and W19
to
motor.
motor
is
recommended
removing intermediate
as
close
capacitor
that
belt (HB-48) between
front
5-6
to
motor
(H
motor
by
removing
the belt (HB-48)
as
possible. I nsulate wires,
B-13) retain capacitor and bracket
is
newly installed.
four
screws
motor
gear
of
printer. Retain pulley and
pulley (HB-22) and
(HB-30)
with
be
replaced at the
for
forward clutch
four
Page 66
Figure 5-2.
MAIN
MOTOR
DRIVE
AND
DRIVE
BELT
ARRANGEMENTS
5-7
rlev. G
Page 67
DRIVING
C.
D.
MECHANISM
Preparation
1.
Solder
of
Main
Motor
two
capacitor wires (yellow)
W/Fan and
-C~utch
Plate (HB-98) Prior
from
motor
to
terminals
to
Installation
of
retained capacitor
(HB-13).
Installation
of
Motor
Pulley Driver (HB-92) and Main
Motor
NOTE
The
following
parts
are
to
be
added
(in the order indicated, a through
d),
to
the shaft
addition
and fan
the
motor
to
that
of
the
motor
are
the pinned clutch plate
are
factory
(HB-98). Refer
del ivered
to
Figure
in
with
(HB) (Part 1).
a.
Motor
b.
Motor
c.
Spring
d. Nuts
1.
Tighten
Tighten second check
2.
I nsert
mounting
pulley
pulley driver
for
for
nut
motor
holes.
60
Hz
(H
HB-92 (HB-93).
HB-93 (HB-12).
(H
B-112)
so
that
nut
into
back
of
or
50
B-92).
spring coils
(H
B-12).
printer
Hz
(HB-110, HB-111).
squeeze
(shaftfacing
together,
front
of
printer) and
but
not
3. Install new belt (HB-48) over intermediate pulley (HB-22) and main
(HB-110,
4. Insert
Do
a.
I nsert adjusting
Motor
b.
Adjust
down on the
(HB-9) and align screws parallel
c.
Tighten
d. Tighten
e.
Press
of
adjusting
mounting
not
tighten
belt
ON/OFF
main
or
HB-111).
bolts (HB-17)
until
the
following
bolt
(H
B-18)
will
tighten.
motor
and
bracket parallel
top
of
two
slotted-head screws (HB-12)
four
mounting bolts (HB-17).
nut
(H
B-19) on adjusting
switch on operator panel
motor
and belt tension while operating. With switch 0 F F readjust
bolt
and
mounting
into
into
to
nuts,
main
motor
steps
are
side flange
to
front
the
front
bolt.
if
required.
through
performed:
of
motor
paper
pan
paper pan.
of
printer
base
underneath
mounting
(H F-89)
of
to
test alignment and operation
by
the mounting bracket
overlapping.
set
over
motor
motor
pulley
printer.
bracket and turn.
sighting straight
5.
Reinstall intermediate
6.
7.
B.1. Ensure
(HB-27)
Place
other
To
adjust eccentric idle shaft (HB-27) (Fig. 8-4, part, 1,
that
is
inserted
end
forward clutch pulley belt (HB-48)
of
pu
intermediate pulley (HB-30), refer
8.
For
final installation
9. I nstall ribbon through extended pins on right and left-hand
90).
Rev.
G 5-8
gear
(H
B-30).
for
forward clutch wh ich
is
so
that
belt
fits
over smaller
gear
of
Iley belt over the forward clutch gear
to
paragraph 5.2.3.3.C.
of
motor,
reverse steps A.1. through A.7.
was
removed in step
over hole when idle shaft
cluster gear (HB-30).
(H
B-60).
View
A)
and back
at
para. 5.2.3.2.A.
control
levers
lash
(H
1-88,
for
Page 68
E.
Forward and
1.
Reverse
Clutch Drive Mechanism (Refer
DRIVING
to
Figure HB, Part 1 and 2 and HI)
MECHANISM
Forward Clutch (HB-139)
a.
Remove clutch spring (HI-4) on
(HI-6). Slide
b.
Remove clutch
c.
Remove ribbon drive shaft
of
printer.
d. Slip
off
intermediate pulley
e.
Remove bushing bracket (HB-51)
screws
(H
f. Remove
g.
Loosen screws (HB-61) and remove pulley (HB-60).
h.
Remove clutch spring (HB-144), hub (HB-143), and splined armature (HB-142).
i.
Slide clutch
offspring
gear
and
(HI-1).
pulley belt (HB-48) between forward clutch pulley (HB-60) and
for
forward clutch (HB-30).
B-52) and one washer (H B-96).
sleeve
(HB-62)
rotor
from
(HB-141) over shaft, and remove both key (HB-64) and
sleeve.
unit
shaft.
sleeve
by
(HI-5)
removihg screws
from
shaft (HB-50) (Part
by
loosening
(H
1-17)
two
from
2)
by
set-screws
right side
removing
rotor.
NOTE
To
remove
and rear clutch assembly
shaft, proceed
reverse
total
parts
of
the forward
from
with
removal
cl
utch parts in praragraph
of
its
the
5.2.3.2.E., step 2 below, and then
the removal
of
forward and
reverse
field assemblies (HB-140) and main
belt pulley (HB-63) in step 3.
2.
Reverse
a.
b.
c.
Clutch (HB-139)
Disengage belt
146) and
reverse
Remove screws
and slide
Remove
off
bushing (HB-53)
sleeve
(HBA9)
between intermediate shaft
pulley (HB-60).
(H
B-52) and
(HB-62)
from
two
with
shaft.
washers
bracket
(H
from
B-96)
with
from
shaft.
d. Loosen set-screws (HB-61), and remove reverse pulley (HB-60).
e.
Remove spring (HB-144), hub (HB-143) and splined armature (HB-142).
f. Slide clutch
rotor
(HB-141) over shaft,
and
remove both key (HB-64) and
rotor.
3. Forward and
a.
Cut forward clutch field assembly wires No. W39 (brn/yel) and W40 (red/
blu)
Note
these
b.
Cut reverse clutch field assembly wires No. W34 (red/pur) and W43 (brn/grn)
(See
that
color
c.
Free mounted forward and reverse field assemblies (HB-140)
two
frame (HE-1) and sliding
Reverse
(See
Fig. 8-5). Ensure
that
two
color
Fig. 8-5). Ensure
two
blue wires emerge
coded wires. (Refer
Field Assemblies (HB-140) and Main Belt Pulley (HB-63)
that
wires
are
properly identified
blue wires emerge
coded wires. (Refer
that
to
from
the clutch field assembly and
to
wiring Diagram 63002333, Section 7).
wires
are
properly identified
from
the clutch field assembly and
wiring Diragram 63002333, Section 7).
screws, washers, and brackets (HE-72, 73, 71)
each
bracket away
from
from
field holder tabs A and
B (F igure 8-5).
d. Slide main belt pulley
(HB~63)
off
shaft. Retain key (HB-64).
pulley (F
bracket
prior
prior
to
join
by
right
side
ig.
8-4/
(H
B-51
)
to
cut.
join
cut. Note
these
loosening
of
main
5-9
Rev.G
Page 69
DRIVING
F.
G.
MECHANISM
e.
For complete assembly replacement
main
Timing
1.
2. For
8elts (H8-48, 49)
For
forward clutch
(H8-30)
for
installation.
reverse
2.c.
Intermediate Shaft
1.
First, remove idle shaft (HB-27)
clutch
part
2. Loosen pulley
(H
3. Pull
free pulley (HB-22) and
by
gear
8-23). Stide
out
of
forward and
motor
pulley, reverse step
of
paragraph 5.2.3.2.E., steps 1, 2 and 3.
NOTE
When assembling forward and reverse
clutch and shaft parts, begin assembly
by
adjusting main
keys (HB-64) spacer (HB-109) and clutch
field assemblies (HB-140) on center
shaft.
belt
by
removing
clutch belt (HB-49) removal, refer
with
removing
(H
8-30)
(H
riveted pulley and shaft (146) toward
nut
Pulley (Fig. 8-4/146)
nut
prior
B-22) on intermediate shaft (146)
off
pulley belt
motor
(H
8-48) remove intermediate
(HB-28) and
and washer (H8-28, 29). Slide belt (HB-48)
to
removal
felt
washers (HB-24).
pulley (HB-63),
use
with
attached intermediate
of
the shaft (H B-27).
(H
B-48).
of
procedure in para.
to
front
reverse
gear
procedure in para. E.2.a. through
by
loosening
of
printer. This step
clutches and
for
forward clutch
0.5.
through
gear
(HB-30)
off
two
7.
for
forward
the
two-
set-screws
will
5.2.3.3 Adjustments
A.
To
Adjust
1.
Torque
Kgm-cm).
2.
If
timing
forward and rear clutches.
B.
To
Adjust
Proper
When about
between pulleys, belt depression
Adjustments
1.
Belt ( HB-48) between
belt tension
to
Motor
compression
Pulley Driver (HB-92)
of
slip clutch
Adjust
belt (HB-48) receives abnormal shock and squeeking noises
is
33.3 oz-in. (0.944 Kgm-cm) through 97.2 oz-in. (2.75
by
changing tension
of
spring
is
increased beyond slip clutch limits, carriage accelerates,
(Motor
of
Slip Clutch)
spring (HB-93)
NOTE
Make sure
surfaces
part
Belt Tension (Timing
belt
tension
300
of
change position
is
obtained under the
grams (10.6 oz.) pressure
belt tensions
by
loosening nuts (HB-19) and screws (HB-17).
of
of
that
of
motor
motor
is
motor
motor,
there
is
no oil on
clutches (includes
and
motor
8elt
is
about 3
as
follows:
pulley ( HB-11 0, HB-111) and pulley (HB-22); adjust
then tighten all screws and nuts.
driver H 8-92).
HB-48, 49)
following
is
applied
to
4 mm (0.12
conditions:
to
upper
to
with
nuts
half
of
belt,
0.16-in.).
Adjust
(H
will
mid
bolt
8-112).
come
point
(HB-18)
from
Rev.G
5-10
Page 70
DRIVING
2.
Belt (HB-48) between pulley (HB-30) and pulley (HB-60)
belt
tension
bracket (rear) A (HB-75). Make sure
by
loosening screws (HB-79) washers (HB-114) and positioning tensioner
that
belt
is
pushed
contacts tensioner L (H B-77) completely. I f contact
tensioner bracket (rear) B (HB-76)
by
loosening screws (HB-79) and washers (HB-114)
and re-position bracket (HB-76). Then repeat above adjustment
for
forward clutch; adjust
down
is
not
complete, adjust
horizontally
as
in beginning
step 2.
3. Belt (HB-49) between riveted pulley shaft (146) and reverse pulley (HB-60); adjust
belt tension
(HB-33) by making sure tensioner (HB-34)
by
loosening screws (HB-39, 79). Position tensioner bracket
is
pushed up against the
belt
before tightening screws.
C.
Backlash Adjustment
1.
With the spur gear on intermediate pulley (HB-22) meshed
(HB-30) at the back
between the teeth
a.
Turn offset idle shaft (HB-27) clockwise
"exist between
by
hand
b.
When
lash
movement
or
1/8
c.
Insert feeler
gap
of
max).
of
Intermediate Pulley (HB-30)
of
the printer, begin the
of
both
gears.
gears.
until
there
screwdriver slot
of a turn
gauge
Determine this
is
no backlash movement between
of
(See
Example
(See
Example 2).
between the
adjust shaft (HB-27) comes
1),
rotate shaft counterclockwise 45
sides
0.012-inch through a maximum
(See
Fig. 5-4).
following
with
by
moving
of
two
gap
For
Forward Clutch (Fig. 5-3)
with
intermediate pulley
adjustments
a screwdriver
gears
foreward and backward
to
meshed
of
gear
0.015-inch (0.30
until
gear
teeth.
rest after no back-
teeth
with
play
for a minimum
to
MECHANISM
and
of
(front)
completely
some play
ceases
degrees
0.38
mm
to
EXAMPLE
(NOT
NECESSARILY
Figure 5-3.
1
VERTICAL)
DETERMINING
5-11
HB-29
HB-31
BACKLASH
EXAMPLE
2
ADJUSTMENTS,
HB-27
SHAFT
(HB-27)
Rev.G
Page 71
INTERMEDIATE
(HB-22)
GEAR
FLAT
GAUGE
W/-(HB'22
.........
7~
II
(HB-30)
0.012.0.015.
(0.30 -0.38
1
INCH
MM)
A
Figure 5-4.
D.
INTERMEDIATE
(HB-30)
USE
OF FEELER GAUGE FOR
When
d.
e.
Intermediate Shaft W/Pulley, Idle Shaft, Flat
1.
Remove all external accessory covers.
2.
Remove cavity assembly 63001105-1 (Section 7
3. Remove power driver board assembly 63002242-4001
4.
Tilt
machine backwards,
of
printer.
5.
Apply
shaft w/pulley (146).
6.
Apply
(HB-27)
satisfactory movement
nut
and
washers
at the
same
Complete re-assembly
1)
Add a few drops
and on both
2) Forward
belt (HB-48) should
on, at this point,
of
main
(HB-146)
anderol Oil No. 465
Anderol Oil No. 465
for
intermediate
(HB-28, 29)
time, holding correct adjusting screw position
felt
and
reverse
motor
is
to
forward and
90
gear
GEAR
BACKLASH
of
with
with
the following steps:
of
Anderol No. 465 oil
washers
gears
distributed
degrees
to
to
(HB-31).
pulley belts (HB-48, 49) and main
be
in position
should operate
reverse
from site postion,
two
felt
two
felt
for
forward clutch (HB-30).
ADJUSTMENT, (HB-30, 22)
gear
(HB-30)
a 10 millimeter open-end wrench, while
without
clutches.
Washer
washers
washers
has
to
(See
Fig. 8-4).
for
operation.
with
strain along intermediate shaft
Lubrication
of
manual).
(H
B-24) located on counter
(H
B-31) located on idle shaft
been
established, lock up
with
screwdriver.
eccentric idler shaft (HB-27)
motor
If
motor
minimum
(See
to
expose underneath portion
noise,
para. 5.2.13.2.0.).
pulley
is
turned
as
torque
E.
Intermediate Shaft Bushings - Lubrication
1.
Check that shaft bushing (HE-7)
2.
Secure loose bushings by using
base
frame
loctite
shaft hole
3. Lubricate inside surfaces
No. 465 Oil
Rev.
G 5-12
touching inside surfaces
of
printer.
of
bushing.
prior
Clean
to
installation
are
secure in printer machine support.
loctite
surrounding support holes
of
of
bushings and intermediate shaft (146)
(or equiv.) on outside surfaces
prior
bushings where shaft rotates.
or
replacement
(See
item 2, para. 6.3.C.).
that
contact
to
installation. Avoid
Clean
interior
with
Anderol
Page 72
F.
Forward and
1.
Since this section covers installation
is
both forward and rear clutch.
G.
Bushing End-Play
To
ensure smooth
adjustments:
1.
Tighten screws (HB-52) on rear (forward clutch) bushing bracket (HB-51).
2.
Loosen screws (HB-52) on
3. Insert
tain a
dimension.
no
Reverse
gap
required between the
Clutches (No Clutch Gap)
Adjustment
rotation
flat
gauge
between spacer (HB-62) and
gap
of
0.002-0.004-in. max. (0.05-0.10 mm) and tighten bracket
DRIVING
of
new preload clutches
rotor
(HB-141) and splined armature (HB-142)
(See
(Pre-Load Clutch) (Refer Fig. 5-5)
of
clutch shaft (HB-50) (Preload) perform the
front
(rear clutch) bushing bracket (HB-51).
hub
of
drive pulley (HB-60). Main-
MECHANISM
Figure 8-5), there
for
following
to
this
Figure 5-5. BUSHING
HB-Sl
TOP
END-PLAY
VIEW
ADJUSTMENT
0.002 -0.004
(0.05 -0.10
MM)
FOR PRELOAD CLUTCH
- I
N.
MAX
SHAFT
(HB-50)
5-13
Rev.
G
Page 73
SPRING
DRUM
DAMPER
5.2.4 SPRING
DRUM
(FIGURE
HC)
5.2.4.1 Operation
1.
Provides spring tension
5.2.4.2 Removal/Replacement Procedure
1.
Release
spring pawl (HC-10)
2. Actuate pawl (He-1 0)
Spring may
excessive noise.
3. Roll belt (HA-36)
4. Loosen
5. Drum may
6.
To
nut
be
assemble,
off
(HC-9) and remove
disassembled
reverse
above procedure.
5.2.4.3 Adjustments
for
(with
to
return
release
of
left
cover
by
slowly loosening
spring tension step-by-step.
NOTE
unwind
suddenly
pulley (HC-5).
drum
by
removing nuts (HC-9) and shaft (HC-8).
head.
down)
with
assemb.ly
nut
(HB-12) and screw (HC-11).
from
brackets (HC-6, 7).
1.
2.
3. Proper tension
5.2.5 DAMPER
Spring
unit
To
this
to
is
carriage
pawl
if
(FIGURE
drum
w/main spring (HC-1) shou
smoothly
from
any position
adjust main spring tension, loosen
will
release
the holding pawl (HC-1 0). Rotate spring drum (HC-1) counterclockwise
increase tension, and rotate clockwise
will
be
obtained
positioned
is
nut
(HC-12) andscrew (HC-11)
motion
easily
at
starting position. The purpose
at home position,
released
from
HD)
5.2.5.1 Operation
1.
Dampens return
print
head
5.2.5.2 Removal/Replacement Procedures
1.
Remove screws (HD-29)
2. Loosen
(H D-1)
3. Remove
4. Remove
nut
(HD-24) and back
from
frame (H D-37).
snap
ring
(HD-16)and
lid
(HD-l1)
by
5. Remove spring (HD-10).
6. Take
7.
off
Remove
split
nut
(HD-8).
pin (HD-9)
8. Remove steel washer (HD-7) and packing (HD-6).
Id
have
only
to
starting position
nut
(HC-12) and back
to
decrease
by
winding spring drum
of
so
that
11
windings
teeth on spring drum
are
loosened
with
too
motion.
to
remove complete
out
center screw (HD-23). Remove
remove
pin
unit.
(HD-21).
removing.screws (HD-12).
from
nut
(HD-8).
enough tension
without
any
off
to
return carriage
other
force.
screw (HC-11) slightly;
tension.
about
the spring
is
ten times when carriage
drum
is
to
hold down
about maximum. Note
main spring loosening at once
quickly.
unit
damper cylinder
that
Rev.G
5-14
Page 74
9.
To
recommended
Note Following points
a.
b.
c.
5.2.5.3 Adjustments
1.
Tighten center screw (H 0-23)
Additional
2.
When
contact surface
recommended Eastman
install packing,
Split
pin (HO-9) should
Piston Rod
(HO-10), when pushing down piston rod
When replacing
freely in bushings.
tightening may
replacing damper cushion
reverse
NYE
(H
0-2) should
with
above procedure and coat inside
RHEOLUBE No. 723-MS,
of
above procedure:
not
interfere
be
lid
(HO-11), care should
with
lock
piston rod (HO-2).
(H
alcohol and sandpaper.
910
glue,
returned
enough force
0-33) on carriage stopper lever
or
equiv.
or
equiv.
with
movement
to
normal position easily
by
hand and releasing.
be
taken
to
hold damper cyl inder
Fit
cushion and
of
that
DAMPER FRAME
of
cylinder
spring (HO-10).
rod (HO-2) moves
cap
(H
(H
lightly
by
0-32),
0-34)
spring
(H
using
with
0-1).
clean
5.2.6
5.2.6.1 Operation
5.2.6.2 Removal/Replacement Procedures
FRAME
The
A The
B.
(FIGURE
following
1.
Left-hand reed switch w/case (HE-78). This switch should
signal
2.
Right-hand
signal
3. Flexible
through vertical slots
Fig. 5-6).
following
their
locations
1.
Platen (H E-2) and Platen Holder
2.
Left
3. Carriage stopper
4. Right Clutch Stop (HE-70) and
5.
Operator
6. Rubber Feet (HE-24).
7.
Left
8.
Limit
Flexible
HE)
two
reed
switches and flexible
of
RTP (ready
reed
switch w/case (HE-78). This switch should
of
EOP
(end
of
Timing
removable parts
are
chassis
Panel
guide plate (HE-63) and right guide plate (HE-62)
Switch (Reed) w/case (HE-78).
Timing
Fence (Fig. 8-8/135). The
on the frame (HE) drawing
(H E-86) and right
(H
E-30).
(HE-89) and
Fence 63002440-1001 (Fig. 5-6).
to
print)
for
timing
print)
while carriage
when carriage
the optical pickup, single track head (Fig.
are
not
described in a disassembly/assembly order,
(H
E-3).
chassis
Left
Support
fence
are
located on frame
is
positioned over
is
positioned over it.
timing
with
(H E-85).
Clutch Stop (HE-71).
(H E-90).
fence
their
key numbers.
is
for
be
closed
be
used
cavity.
it.
closed
to
interrupt
of
printer:
to
output
to
output
8-12/24
light
and
but
IN
ANY
FENCE,
ABRASION TO EMULSION SIDE OF FENCE
(SIDE
OPERATION
AVOID
SURFACE CONTACT
MARKED,
CAUTION
INVOLVING
"RIGHT").
5-15
TIMING
OR
Rev.
G
Page 75
FRAMI:
1.
Carefully remove video
optical pickup
head
amplifier
ass'y 63002668-4001 (Section
63002634-5003 (Fig. 5-6)
from
timing fence (135) by removing screws, washers (Fig. 8-3/55, 56, 57) holding the mounting bracket
8-3/50)
2.
Loosen screws, washers (138,134) holding right-side clamp (136)
54) on right side
3.
Unhook
clasp (133). Set
4.
To
left-side bracket
5.
To
to
the carriage mechanism.
of
printer
left
side
of
flexible
timing
remove left-side clasp (133), remove
(H
E-55).
frame (H E-1).
timing
fence aside.
fence and remove
two
remove right-side clamp (136), remove
from
projection at back
screws, washers (138, 134, 137)
two
screws, washers (138, 134)
right bracket (HE-54).
6.
To
re-install.timing fence and video
up head),
(Refer
reverse
to
para. 5.2.6.3.A.B. and
order
of
disassembly
amplifier
C.
for
ass'y
(with
attached optical pick-
of
para. 5.2.6.2.B.1 through B.5.
adjustments).
HE-54
7)
to
with
attached
(See
bracket
Fig.
(H
of
from
from
E-
Figure 5-6.
5.2.6.3 Adjustments
(The
following
complete adjustments required
pick-up head).
A. Positioning
1.
Loosen screws, washers (138, 134) on right-side clamp ( 136) and pull right
tab
(78.7 ± 2 mm)
this dimension allows
FLEXIBLE
paragraphs:
of
Suspended
of
fence
to
TIMING
A,
B,
for
Timing
the right
from
edge
C,
timing
FENCE
should
MOUNTING,
be
done in sequence
fence and video amplifier single track optional
Fence (Flexible)
so
that
the
first
of
printer
for
a 5/8-inch nominal
casting
137
'-.../
~~
~
for
window
(See
printout
OPTICAL
134
138
3.1.:!:..
0.1
(78.7
± 2
SERIES
101
to
combine all necessary
First Character
of
fence
is
located
SINGLE
inches
mm)
Printout
TRACK
(Fig. 5-6)
3.1 ± 0.1
Illustration, Fig. 5-6). (Note,
margin on the
printing
PICKUP
and
end
of
inches
that
form).
Rev.G 5-16
Page 76
FORM FEED MECHANISM
2.
When correct dimension
hardware on the clamp (136).
B.
Establishing Fixed Parallelism
1.
Loosen screws, washers (H E-58, 59) on
2.
From the
the
left
and right
in 0.002-in. (0.05 mm) along entire length
maintain applied dimension.
C.
Single Track, Optical Pickup Assembly Alignment
WHEN
AMPLIFIER ASS'Y WITH MOUNTED OPTICAL
HOUSING (FIG.
TIMING
EMULSION
MARKED,
1.
Centering
With the optical housing normally in position
board 63002668-4001 (Section 7), guide mounted fence
housing,
amplifier bracket (50) and carriage (HA-9), check the
a.
Make sure fence
has
been
applied, secure fence
for
Suspended
Timing
left
front
edge
of
front
guide bar
edges
(H
E-8) measure 4.52 inches (114.8 mm)
of
the positioned fence. Parallel
CAUTION
INSTALLI~G
AND
ADJUSTING VIDEO
5-6) WITH RESPECT TO
FENCE,
ON
AVOID
TIMING
SCRATCHING
FENCE (SIDE
"RIGHT").
of
TimingFence in
but
before tightening screws, washers (Fig.
is
Siotof
Optical Pickup (Fig. 5-7)
positioned in center
by
tightening
Fence (Fig. 5-6).
and right brackets
of
fence. Tighten screws
OF
on
the video
amplifier
into
HA/55,
56, 57) on the video
following;
of
housing slot (Fig. 5-7).
(H
E-55, 54).
ism
shoutd
slot
of
mounting
out
be
(H
E-58)
optics
to
with-
to
VIDEO
AMPLIFIER
BOARD
OPTICS
HOUSING
Figure 5-7. FENCE
b.
If
required, loosen
adjust optical housi
slot. Tighten screws.
VIDEO
MOUNTING
ADJUSTMENT
mounting
ng
so
screws on video
that
fence
AMPLIFIER
HARDWARE
BOTTOM
EVEN
AND
OPTIC HOUSING
EDGE
WITH
BOTTOM
amplifier
is
positioned in center line
OF
TIMING
EDGE
FENCE
OF
board (Fig. 5-7)
of
the housing
HOUSING
'and
Rev.
G 5-17
Page 77
c.
Make sure
the
bottom
pickup
housing (F ig. 5-7).
d. When conditions have
screws and washers on video
2.
Vertical and Horizontal
a.
Vertical
Sight right side
to
vertical
holding the video
screws, washers when vertical alignment
b.
Horizontal
If
required, make sure screws, washers (HA-55, 56, 57) holding video amp. bracket
(F
ig. 8-2/50)
of
the
optic
c.
Re-check step 2.(a) above
that
when the
of
the fence
of
timing
are
housing
timing
is
in the
been
Alignment
optic
housing and make sure
fence slots.
amplifier
tight
is
board and bracket
and slightly bend
parallel
if
FRAME PAPER FEED MECHANISM
fence
is
same
positioned in the center line
plane
with
the
bottom
surface
of
of
met at para. C.1.(a) through C.1.(c), tighten
amplifier
of
If
with
step (b)
board (Fig. 5-7).
Optic
Housing (Fig. 5-8)
of
parallel alignment
required, loosen screws, washers
to
maintain this ali gnment. Tighten
is
attained.
bracket
printer
was
performed.
up
base
(bend metal
or
down
so
that
portion
with
(HA-55,
the
of
the slot,
the optical
mounting
respect
56, 57)
bottom
bracket
only).
Figure 5-8.
3. Carriage
VIDEO
AMPLIFIER
BRACKET
(50)
··::~~t~f~r:::::::::::~:~~~t~tt:tt\:::::::::::::::::::t~:::~:~:~:~::::t::::::::::ttt{r~::::::::"
VERTICAL
a.
Move carriage
slot.
b.
Timing
full
travel
para. 5.2.6.3.B. through
AND
to
Timing
fence should
carriage movement (forward, and back
is
not
PRINTER
BASE
HORIZONTAL
Fence
to
uniformly
Alignment
right margin
be
in the center line
parallel and vertical
C.
ALIGNMENT
OF
SINGLE
Checkout
by
hand, and observe tracking
of
the
optic
to
starting margin).
to
centered
TIMING
FENCE
CHANNEL
of
fence in housing
housing slot
If
timing
fence, recheck
OPTICS HOUSING
throughout
optic
pickup
D. Maintenance
Timing
CAUTION:
of
fence can
DO NOT
Flexible
be
Mylar
Timing
wiped clean using
USE
ANY
ORGANIC
5-18
Fence_
lint
free, non-abrasive material.
SOLVENTS.
Rev.G
Page 78
E.
Static
Proper location
from
center
Adjustment/Limit
of
left-hand
(Reed) Switch (Figure 5-9)
reed
switch
is
approximately 1.07-inches (27.2 mm)
machined surface, where damper frame (HD-37)
of
right-hand
reed
switch
case
itself.
FRAME
is
mounted on frame (HE-1),
to
right
to
Proper location
to
right
from
last
HE-l
LEFT
OF
Figure 5-9.
LOCATION
of
right-hand
slit
EDGE
PRINTER
on
reed
timing
27.2
MM~
(1.071 -
L
OF
LEFT
switch center
of
case
is 3 to
fence assembly (Fig. 8-8/135,
HE-78
IN.)
REED SWITCH (TOP VIEW)
5mm
View
(0.12
C).
to
0.20-in.)
F.
Dynamic
This adjustment
switch
The test
Lines should
that
Adjustment/Limit
follows
is
single character line check
for
the right-hand
be
transmitted
limit
switch (reed) returns
the above static settings. The test
(Reed)
limit
(reed) switch
without
print
Switches
for
a carriage return (CR) signal,
head
5.2.7 PAPER FEED MECHANISM (FIGURE HF)
5.2.7.1 Operation
Paper
is
(HF-85).
holes
of
fed manually between the paper
As
paper appears at paper pan
paper on corresponding
left
and
(front)
right
pan
(HF-89), pull up and place
pins
horizontal plane.
When setting
(HF-99) outward.
position. Paper moves up by
slip movement
(H
F-1
00). Pulling
(HF-98) and allows upward and downward
printing
of
paper
knob
To
move paper
is
position
turning
accomplished
of
paper, move paper up
down,
pullout
knob in a counterclockwise
by
serrated
outward disconnects the direct coupling
motion
for
smooth operation
is
to
ensure 132 characters printed.
to
start
of
print
the left-hand
of
printer
position.
capability.
if
possible,
limit
to
(upper) (HF-76) and the paper pan (lower)
left
and right sprocket
of
pin feed belt units (Fig. 8-10/32) on the
or
down
by
first
pulling paper feed knob
knob (HF-99) and rotate
motion.
portion
of
paper.
of
knob inserted
of
serrated parts on the paper drive shaft
knob
in a clockwise
Direct coupling, non-
into
opposing serrated coupler
(reed)
ensure
same
5-19
Rev.G
Page 79
FRAME
5.2.7.2 Removal/Replacement Procedures
A. Paper
B.
3. Loosen set-screws
4. Loosen set-screws (HF-15) on
6. Loosen locking knobs (HG-16)
9.
Feed
Knob
(HF-99) (With Side Covers Down)
1.
Pry
out
cap
(H
F-1
07)
from
knob.
CAUTION
WHEN PERFORMING
UNDER
WHEN SNAP RING (HF-106) IS REMOVED.
2.
Remove
and spring
Pin
Feed
1.
Refer
2.
Remove
5.
Remove coupler (HF-100),
7.
Slide pin feed units apart and using a small slotted
small screws, lockwashers (HG-22, 23) located
pin feed units.
8. Remove holder, bushing and retainer (H F-2,3,4) supporting shaft
and right side
Sl
ide shaft
remove pin feed pulley (HF-14)
10. Remove shaft
11.
To
in para. 5.2.7.2A and
retain.
SPRING
snap
ring (HF-106), collar (HF-103), spring (HF-104), knob (HF-99)
(H
F-1
05).
Pulley (HF-14), FF Reader Gear (HF-16) And Paper
to
para. 5.2.7 .2.A and remove paper feed knob and parts.
snap
ring
of
printer
to
the right,
to
the right and
install paper feed drive shaft
NEXT
TENSION,
(H
F-6).
(H
F-1
02) on coupler
with
by
removing screws
and
when shaft
B.
Note,
STEP 2, PARTS
AND
MAY
SCATTER
(H
F-1
pin
feed pulley (HF-14).
sleeve
(left
from
out
(H
that
(HF-101) and attached FF reader
and right) at
is
flush
belt
(HH-28).
from
the pin feed units (Fig. 8-10).
F-98),
cap
reverse
(HF-107) may require
ARE
00).
top
of
head
on
set-plate (HG-21)
(H
F-5).
with
left
removal/replacement procedure
Feed
Drive Shaft (HE-98).
gear
(HF-16).
pin feed holders (HG-11 /38).
screwdriver, loosen
of
(H
E-98) on
chassis
support
an
adhesive
left
(H
two
or
right
left
E-86),
to
c.
Guide Bar (HF-7) (For
(With side Covers in Down Position)
1.
Remove
2. Loosen
slide
3. Loosen set-screw
4. Remove outside
5. Remove screw
(HF-8)
two
both
from
left
and
locking knobs (Fig. 8-10/16) on
units
to
nut
(H
two
5.2.7.3 Adjustments
A. Paper
3. Pivot switch on lower slot
Rev.
G 5-20
Empty
1.
Remove pin feed cover (HF-87).
2. Loosen
(part
Switch (170) (Fig. 8-9)
mounting
of
upper paper pan HF-76, back wall).
Pin
Feed
Units, HG)
right standoffs (Fig. 8-2/9. 10)
left
the right
(H
F-9) on collar
(H
F-1
0) supporting
pin feed units (HF)
screws,
out
of
the way.
(H
F-8)
F-11) on right end
left
end
to
the
nut,
washers
of
mounting
(H
bracket
of
guide bar (H F-7) Slide collar
of
guide bar.
of
gu
left
F-79, 80,81) holding switch
(with
studs 19).
and right pin feed units and
ide bar.
and out.
to
meet the
Sl
ide bar
following
with
collar
to
bracket
conditions:
to
right.
Page 80
PAPER FEED MECHANISM
a.
Actuator
downward
is
inserted
b. Switch
c. Tighten
d. Check
arm (part
through
normally
is
closed when no paper exists
mounting
wiring
of
switch) extends above
slot
of
upper paper pan
(switch open,
screws when conditions in para. 3.a. and 3.b. are met.
diagram
63002333
into
button
in).
(button
in Section 7
on/off
path
out).
for
detailed
button
of
switch and
of
paper when paper
wiring
of
switch.
5.2.8 PIN
FEED
UNIT
(FIGURE
8-8)
HG
5.2.8.1 Operation
left
Pin feed units,
To
move paper
down,
and right, provide
pull paper feed
paper upward, rotate clockwise. Pin feed
by locking
activated paper guide plates,
knob
(16). When paper
left
is
and
belt
knob
(H F-99)
units
installed on the pin feed belt units,
right
(12, 37) when closed,
belts. As paper moves over the individual links
link
pins
with
aligns the
Direct
portion
this occurs,
coupling
of
spring activated knob (HG-99) inserting
while
printer
feed mechanism (Refer
Finally,
a set-plate (21)
respect
of
paper feed
to
backlash affecting drive pins
to
paper
knob
is
operating, paper
Figure HH),
is
used
to
for
print
registration.
contact
and paper feed shaft (HF-98)
is
tighten on the paper feed drive shaft eliminating possible
5.2.8.2. Removal/Replacement Procedures
A.
Left
and Right Pin Feed Units (HG), (Fig. 8-10)
1.
Perform removal/replacement procedures
remove
left
and
right
pin
feed assemblies.
units (32)
can
of
the pin feed belts, a pin attachment guide (17)
resulting in
moved
for
paper
to
travel vertically up
outward
be
positioned laterally and
and rotate counterclockwise;
left
function
an
even
motion
is
accomplished
into
opposing serrated coupler (H
by
logic signals affecting
found
in para.
are
locked in
and
right
to
hold
the paper on
of
the pin feed belt.
function
5.2.7.2.A,
(32), spring
by
F-1
S,
or
down.
to
move
position
the
serrated
00). When
of
the
form
and C
to
The
procedure (Fig. 5-10) applies
left
a
there
will
operation being applied
units.
2.
Orient
unit
so
Paper holder gate (12, 37)
3. Rotate
pulley
a.
Rev.
G 5-21
belt
(32)
(26)
for
Insert a 1 ~ mm
NOTE
following
or
is a part
be
indicated in
that
removal/replacement
right
pin
feed
difference, key numbers
spring (15)
is
by
hand, and locate
drive sleeve (24)
allen-wrench, and loosen
unit.
the
text
is
at
closed.
at
to
But
so
will
cover
bottom
two
bottom
either
where
that
the
both
of
unit
while
being held in hand.
set-screws (27) between pins on drive
of
unit.
two
set-screws (27).
Page 81
PAPER FEED MECHANISM
4. Loosen
on the
a.
5.
Using a medium sized slotted head screwdriver, remove
(34,35)
together.
6. Separate and remove belt guide (33)
sleeve
7.
Remove
idler slide (28)
8. Lay
the
two
screws, washers (18, 19, 20) holding the pin
pin
feed holder (11, 38).
Open gate (12, 37) and slide
belt
is
compressed
imately %-in. (6.3 mm)
and plate
(24) in position.
two
screws, lockwashers (29,
to
unit
on bench
sleeve
(24)
is
projecting upward,
each
side, the clearance between belt and guide
(not
nut
(36) holding pin feed holder
the pin feed holder
with
gate (12, 37) open. The
pin
attachment
critical).
from
19,30)
unit
(See
remaining
(11,38).
Fig. 5-10). I(Set plate
attachment
guide (17) outward
two
screws, lockwashers,
and
(11,38)
portion
recessed
Keep
set
plate (21)
and
nut
sleeve
guide (17)
so
that
is
belt
guide (33)
of
pin
feed
unit.
(31) holding the
(24) in position.
is
facing downward,
is
not
shown}.
when'
approx-
Keep
Figure 5-10.
9. Remove the
10. Remove spacer (25)
11.
16
.-®
:~j'
29
REMOVAL
(24); (1)
the drive pulley slides up over the
Lift
(24)
OF
BELT
follbwing
belt
(32), (2) idler slide (28) and (3) drive pulley (26). Note,
up remaining pin feed holder
from
pin feed holder
(32)
IDLER
three assembled parts together
from
sleeve
(11,38).
12
37
I ':-i{)}-17
..
11.[~35
.
5-22
34
SLIDE
sleeve
(24).
unit
~
~20
f-19
~18
(28),
AND
(24)
with
(11), (38),
DRIVE
as
the
from
PULLEY
one
unit
other
two
bench and remove
from
parts.
(26)
sleeve
that
sleeve
Rev.G
Page 82
12.
To
A.1. through A.11.
B.
Paper Holder Gate
1.
Remove paper holder gate
position on the printer.
a.
b.
c.
5.2.8.3 Adjustments
re-assemble pin feed
(Left
and Right) (12, 37) (Fig. 8-10)
Using spring removal
holder gate when gate
Remove
To
snap
ring (14) at
replace gate, reverse order
unit
from
tool,
(left
and right), reverse steps indicated at para. 5.2.8.2.
pin feed units,
remove spring (15) located at
is
closed.
bottom
of
of
disassembly B.1.a. through B.1.b.
if
required,
with
pin feed units in
bottom
of
pin (13) on gate. Remove pin.
paper
A. Paper Holder Gate
(Adjustment
1.
Clearance between belt guide
should
printer
2.
Adjust
can
be
0.065
is
operating.
for
clearance by bending right angle metal stopper at
holder (11,38),
(Left
be
done
iO.015-inch
(See
and Right) (12, 37) (F
with
assembly mounted on printer).
unit
(33) and the paper holder gate, when closed,
(1.65
iO.4
ig.
mm)
Fig. 5-11).
8-10)
to
hold paper in place when
bottom
37
0.065 + 0.015 -IN.
(1.6
,±,0.4
of
MM)
pin feed
Figure 5-11.
B.
Pin
Feed
Stopper (5) (Maintaining 5/8-in. (15.9 mm) Nominal Paper Margin (Fig. 8-10)
1.
Loosen lock-knob (16) at
paper feed drive shaft (7).
2.
Using a 2 mm allen-wrench, loosen set-screw (6) on stopper (5) located at
end
of
printer
3. Maintain 0.2 in. (5 mm) dimension between stopper and
Fig. 8-10/86). Tighten screw,
Rev.
G 5-23
RIGHT
TO
SHOW
ADJUSTMENT
GATE
METAL
OPEN
STOPPER
FOR PAPER
top
of
pin feed holder (11) and slide
on paper feed drive shaft (7).
(See
HOLDER
Fig. 5-12).
RIGHT
GATE
GATE
CLOSED
left
chassis
out
of
frame (Ref.
the way on
left
Page 83
0.2
REF.
in.
(5mml---11.
8-8/86
PAPER FEED MECHANISM
5
7
Figure 5-12.
4. Set
5.
6. Run a line
7.
C.
Pin
Attachment
(Adjustment
1. With paper
2.
3. Open paper feed gate (12, 37) and move pin attachment
D.
Set-Plate (21)
1.
MAINTAINING
left
pin feed holder (11) flush
knob
(16). .
Perform para. 5.2.6.3A
of
print,
print
margin.
Recheck fence dimension adjustment (step
nominal.
Guide (17)
is
required
gate
(11, 38)
Slide pin feed units
(18, 19, 20) holding the pin attachment' guide (17) on the pirrfeed holder.
completely inserted under mounting screws (18) and parallel
Tighten screws, lockwashers.
Ensure
to
a.
b.
c.
d. Repeat steps in para. D.1.a. through D.1.c., and adjust the
of
left
and right pin feed
for
Paper Drive Slide Shaft (10) (Fig. 8-10)
that
both halves
avoid backlash
Using a small slotted
23) on one-half
unit
(left).
Push
set-plate against the shaft (10) and tighten screws, lockwashers.
Repeat steps in para. D 1.a. and D.1.b., and adjust the
plate in the
(11)
for
the right-hand pin feed
5/8-IN.
or
more, and check
(Lift
only-if
closed (12, 37), loosen
out
with
respect
of
same
manner.
(15.9 MM)
to
right side
for
locating
and Right) (Fig. 8-10), (Fig. 5-10)
part
of
the way,
of
the set plate (21) contact the paper drive
head
the set plate (21) located on
timing
becomes misaligned
unit.
as
to
forward paper feed
screwdriver, loosen
unit.
NOMINAL
fence
for
nominal 5/8-in. (15.9 mm) beginning
5)
lock
knob( 16)
required, and loosen
PRINT
of
stopper (5), and tighten lock-
for
operation,
if
margin
or
replaced)
motion.
two
sleeve
MARGIN
if
required.
is
not
5/8-in. (15.9
at
top
of
pin feed holder
two
screws, washers
gu
ide
so
that
it
with
idler slide (28).
sl
ide shaft
screws, lockwashers (22,
(24)
of
the pin feed
other
half
of
other
set plate
is
the
m~)
set
5.2.9 FORM FEED ME.CHANISM
5.2.9.1 Operation
A. Form Feed Torque Transmission
Torque
feed
1.
of
units
Motor
form
feed
for
upward paper movement in the
(HH-71) -
(FIGURE
motor
motor
HH)
(HH-71)
gear (HH-12).
is
transmitted via paper drive shaft (HF-98)
5-24
following
manner:
to
pin
Rev.G
Page 84
PAPER FEED MECHANISM
2. F F Clutch
Unit
(contained between F F chassis, right) (100) and F F
(HH-2) - FF Clutch gear (HH-18) - FF Clutch inside cam (HH-14) - gear
cam (H H-23) - F F idle gear (H H-27)
with
belt
drive (H H-28).
3. Paper Feed Mechanism (Fig. 8-9 (HF) - paper shaft (HF-98) and
(HF-14) - FF reader gear (HF-16).
Unit
4. F F Clutch and Magnet
HH-46) - sprocket (HH-44)
B.
Form
Feed
Assembly
Motor
(HH-71)
with
fan;
form
- F F reader idle gear (H H-38) - gear (H H-4 7) (on shaft
for
feed
paper tape
clutch
rotation.
assembly; gear
standard 6 line/inch paper tape 63002292-3001) are included in the
mechanism.
C.
Rotation
Upon receiving a signal
(FF)
(101) releasing the tab (part
pawl (95). The pawl
bearings (H H-19)
(HH-25)
D. Operation
As the
(towards the solenoid), activated
the roller bearings (H H-19) grip the
olution
af
clutch
and magnet
to
rotate freely
of
clutch
takes place
Clutch Cam and Pawl
for
electronic logic, the solenoid (H H-R4) in the
unit
(See
FiQ.
of
F F clutch inside cam, H H-14) and F F
controls
that
allows the constant
Clutch Inside
the F F clutch releaser (H H-15) containing three
(CLUTCH
Cam
OFF)
(HH-14)
slide pawl (101) pulls away
by
logic command Paper Movement Solenoid (PMSO L).
clutch
that
is
equal
to
a paper movement
8-~)
energizes and pulls in the
speed
motor
prior
to
with
Paper Movement Solenoid Signal (PMSOL)
from
the
(H H-71) and
incoming logic signals.
inside cam (HH-14) and pawl (HH-95)
shaft (H H-25) and a
of
1/6
train;
and tape reader
rotation
- inch
Chassis,
pin
feed
form
feed
form
clutch
slide pawl
clutch
clutch
or
shaft
of
one-half rev-
one I ine feed
left
with
stop
pulley
(with
(FF)
feed
releasing
roller
(LF).
E.
Tape and Paper Movement -
form
During a
continously
feed (F
until
F)
or
phototransistors (upper tape reader)
through the holes in the tape
reader. Logic signals immediately deactivate the
tape movement
home position and holds
as
well
as
paper movement. The
both
releasing pawl (H H-95). Paper and tape cannot move
by
again
F.
Prevention
The paper movement
ancially linked
logic signal.
of
Paper Counter Movement
is
always in one
to
the
form
feed mechanism, a small spring activated back stopper (H H-74)
periphery
against the cam at each
clutch
At
this
of
gear
with
stop cam (H H-23) and
half
releasing pawl (H H-95) return
point
additional lines
paper movement.
5.2.9.2 Removal/Replacement Procedure
Unit
A. Tape Reader
1.
Disconnect
to
schematic 63002333-9001 in Section 7.
2.
Cut
tie-wraps
(Upper and Lower) 63002671-4001
two
connectors (P119, J119)
holding
VT
and F F Signal.
Vertical Tab
from
the tab on the
feed shaft and
(VT)
the LED's
direction
motor.
function,
(light
rotating
when the
is
mechanically adjusted
revolution when the F F
to
the underside
of
print
are activated
at
wire
of
line feed resistor (Fig. 8-8, HJ-62,
both
paper and tape advance
are
emitting
form
feed solenoid
clutch
energized
diodes) in
slide pawl (101) returns
by
light
the
controlling
F F cam (H H-14) and
until
the solenoid
clutch
To
prevent counter
cam (H H-14)
is
motion
continually
to
fall
clutch
by
left
inside cam (H H-14) and F F
of
the
clutch
slide pawl (101).
selective logic signals affecting
side
of
printer
(Front
View
detection
lower
tape
VFU
to
the
clutch
activated
is
mech-
of
paper
rides
the
into
place
view). Refer
D).
Rev. G 5-25
Page 85
PAPER FEED
FORM FEED
MECHANISM
MECHANISM
3. Disconnect
Wires
9001, Section
4. Remove clamp, screw and flatwasher (Fig.
upper tape reader 529419001-5001.
5.
Cut
the tape reader logic harness.
6. Remove snap-ring (Fig. 8-11/68) releasing upper tape reader assembly
(Fig. 8-11/66).
7.
To
remove
Chassis
8.
To
and insulate wires on new installation
9.
To
upward and pull outward.
10.
To
removal, steps A.1. through A.9.
5.2.9.3 Adjustments
A. Gear With Stop
and Fig. 5-13).
When FF
the shaft
two
small connectors (J120, P120)
are
identified
as
brown/blue
and red/blue. Refer
7.
nylon
tied
to
threaded cross supports
remove tape reader
two
nuts and screws (F
unit,
lower 528532001-5001 and upper tape reader together,
ig.
8-11/56, 55) holding lower tape reader
of
(Fig. 8-11/2).
separate upper and lower tape readers,
of
readers.
separate paper tape guide (Fig. 8-11/69)
install Tape Reader
Cam
(HH-23) and Back Stopper (HH-74) (Refer
(form
feed) clutch releasing pawl (HH-95)
for
F F clutch
(H
Unit
H-25)
63002671-4001 (upper and lower) reverse order
is
being rotated
at
left
side
to
8-8/17,64,
F F
cut
two
from
is
for
a line feed (clutch-on
21) holding logic cable
left
chassis
wires (orange and black). Splice
chassis
not
frame (Fig. 8-11/2),
held
of
printer
(front
view).
schematic 63002333-
(F ig. 8-11/2) releasing
from
shaft
to
F F
pivot
of
to
Figure 8-11 (HH)
by
clutch
slide pawl (101),
condition).
of
As
each
line feed rotation terminates, the FF clutch releasing pawl, which
set
and precedes the tab on the F F clutch inside
the clutch slide pawl (101) releasing the F F shaft
from
the
form
It
is
at this
with
stop
cam
1.
Set the back stop
a.
Move slide (101) and armature (H H-33)
feed mechanism
point,
when the shaft
(H H-23)
to
cam
by
this
clutch-off
is
released,
that
prevent counter-movement
for
correct
working
(HH-84L
b.
While holding armature, rotate FF idle
(clutch-on condition).
c.
Release
the underside
d. Make sure
pawl (101)
notched end
e.
Maintain a
(HH-23) and back stopper (HH-74)
head
slide and armature
of
the clutch slide pawl (101) (clutch
that
when the tab
(clutch-off
of
gear
with
gap
of
0.1
so
that
cam
of
the
cam
condition)
that
stop cam (H H-23). Refer
to
0.2, mm (0.003
(clutch-off
screws (HH-24), and adjust cam accordingly.
is
slightly
cam
(H
H-14), strikes the underside
so
that
F F
motor
(H H-71)
is
effect.
adjustment must
of
paper. (Refer
adjustment in the
by
hand toward armature solenoid
gear
(HH-27) counterclockwise
(H H-14) and pawl (95)
be
made
to
Figure 5-13).
following
is
to
manner:
held against
off).
and the pawl
are
against the slide
the back stopper (H H-74) drops
to
next
step
for
to
0.007-in.) between the notch
condition)
by loosening allen-
off-
of
disconnected
the
gear
off
the
adjustments.
of
cam
5-26
Rev.G
Page 86
A
0.003 -0.007
(O.OB
B
0.007
(0.2 -0.3
-
O.lBmm)
- 0.011
mm
in.
in.
max.
max.)
FORM FEED MECHANISM
TAB
max.
Figure 5-13. TWO ADJUSTMENTS,
B.
Clutch, Inner
1.
To
Cam
(HH-14) - Clutch Slide
adjust proper distance
feed clutch, inner cam (H H-14)
steps:
a.
Loosen screws, washers (Fig. 8-9/86, 82)
b.
mounted
SI
ide magnet frame on paper feed
to
paper feed
between clutch slide pawl (101) and tab
to
0.3 mm (0.007-0.011-in.). Tighten screws and washers.
C.
Timing
1.
Belt (HH-28) (Fig. 8-11)
The
timing
(HF-14)
a.
b.
belt (HH-28) located between FF idle gear (HH-27) and pin feed pulley
has
the
following
Loosen three nuts (HH-70) holding right
chassis
For
(H E-86). (Rotate
proper tension
(0.118-0.197-inch) when load
at
mid-point
c.
Tighten three
tension
has
been
GEAR
of
between
support
applied.
WITH
of
STOP CAM (HH-23)
Pawl
(101) (Refer
clutch slide pawl (101)
prior
to
line feed release, perform the
on
chassis
(100).
chassis
(100) slots
on
adjustments:
FF
left
frame
to
change tension on belt).
timing
both
belt (H H-28) move belt downward 3-5 millimeters
of
100 grams (3.5 ounces)
pulleys.
nuts (H H-70) at right F F
AND
INSIDE CAM (HH-14)
to
Figure 5-13 and 8-11)
to
hold
raised tab on paper
following
clutch magnet frame (H H-96)
so
that
the distance
inner cam (HH-14)
chassis (100)
chassis
(100) when
is
to
left
is
applied on
from
frame
proper
0.2
belt
5-27 -
Rev. G
Page 87
FORM FEED MECHANISM
5.2.10 RIBBON FEED
5.2.10.1 Operation
A. Ribbon Movement - Forward Clutch Drive
Torque
for
spring (HI-4)
ribbon
B.
Ribbon Feed Mechanism
1.
as
Drive, Right Side
Shaft (HB-50) belt gear (HI-18) hand) (HI-27) - bevel
2.
Drive,
Bevel gear (HI-27) - bevel gear (HI-59) - ribbon spool shaft (HI-57) -
C.
Driving Slide Shaft
Torque transmission route
position
of
(HI-39) (Fig. 5-18) and
Tension
of
When one
pins on either reverse
direction
sliding drive shaft A (H
for
binds
(HI-79),
and torque
HI-79).
MECHANISM
feeding
ribbon
engages
sleeve
(FIGURE
is
transmitted
(HI-5)
HI)
while
mounted
on shaft· (HB-50).
follows:
Left
(From
clutch
sleeve
Side
Front
of
Printer)
gear (HI-1) - driving gear (HI-75), bevel gear (HI-81) - driving
(HI-20) -
gear
(right) (HI-43) ribbon spool shaft (right) (HI-38) - ribbon.
for
left
and
driving
right
ribbon feed mechanism
driving slide shaft A (HI-103) (Fig. 5-16)
left
and
right
ribbon
of
by
is
applied
by
ribbon holding plate (HI-137) and guide rollers (HI-19).
ribbon spools becomes
control
setting washer (H
1-1
lever (HI-90, 88) (right)
1-1
04) against reverse
03). When
empty,
some reason, a safety feature
of
driving gear (HI-75) no longer transmits drive
reverse
ribbon
control
eyelet (or stop plate) on
does
releases
head
is
moving
slide shaft
controlled
lever (Fig.
or
(left)
control
not
feed,
ball (HI-76)
from
left
to
right
Torque
A,
(HI-103) - bevel gear (right-
is
transmitted
ribbon.
is
determined
with
control
spring
5-18/90,88).
ribbon
to
change
lever (right)
or
ribbon
from
hole in
to
feed mechanism.
pulls guide
ribbon
or
(left)
driving
shaft
driving shaft
as
clutch
to
by
feeding
on
5.2.10.2 Removal/Replacement Procedure
that
Note
all removal/replacement procedures
(Fig. 1-9)
A. Preliminary Disassembly
Perform the
following
shaft A (HI-103)
1.
Place
left
and
2.
Remove the rear cover.
3. Loosen screw (A-25
steps
prior
or
ribbon spool holders (HI-35, 55).
right
side covers in
of
Section 8, Fig. 8-1) on strain relief bracket (A-13) and set
aside cable.
from
4. Remove screws
5.
Unplug cable harness
6. Remove interface
cavity (F ig. 1 -8)
form
connector
electronic logic, connector board
B.
Ribbon Reversing Rod (Fig. HI)
1.
On
the
right-hand side
of
(HI-91 ).
2. Loosen allen-head screw (H 1-96) on stopper (H
1-92)
rod (H
using a 1.5
millimeter
will
be
done
from
the back
to
removing ribbon reversing rod (H 1-92),
down
cavity
(J12)
printer,
position.
at
back
of
printer.
to
molex
(See
63015104
connector
Fig. 7-13)
(Section 7).
(P-13) (Refer
from
connector
unscrew threaded coupler (H
1-95)
on
left
(0.06-in) allen wrench.
side
of
the
(P8) (part
1-94)
of
ribbon
printer.
sl
iding drive
to
Fig. 1-9/3).
from
connector
reversing
of
Rev. G 5-28
Page 88
RIBBON FEED MECHANISM
3. Loosen locking
left
side
of
4. Unscrew ribbon reversing rod
C.
Driving Slide Shaft - A
1.
On
the
right
supporting driving slide shaft A (HI-103) and drop the shaft slightly.
2.
Using a 1
on bevel gear
3. Remove bevel gear and bushing.
4. Remove
of
printer.
5. Repeat step C.1. through
in step C.1.
6. Remove driving slide shaft
7.
To
D.
Ribbon Spool Holder
1.
Remove both ribbon spools
2.
Remove
left
E.
Ribbon Spool Shaft
1.
To
screws (H
2.
Loosen allen-head screws (HI-42) using
left
3. Remove
4. Remove
5.
Remove
6.
To
Y2
snap
reassemble, reverse order
left
and right
remove
and right collars (HI-41) located on ribbon spool shafts (HI-57, 38).
left
left
left
reassemble, reverse steps 1 through 4.
nut
(HI-98)
ribbon
millimeter
left
1-42)
reversing rod.
side
of
the printer, remove
(H
1-27)
ring
(H
(Left
and right spool holders
chassis
(Left
and right ribbon spool shaft
on bevel
and
right
and right
and
right
with
a 7
millimeter
from
left
coupler and remove.
two
(0.06-in.) allen-wren9h, remove
on right side
1-1
05) and washer
CA. on
A
and Right)
(left
(H
E-86, 85).
and Right)
gears
spool shaft (HI-38, 57)
nut
(H
sleeve
of
printer.
(H
left
side
to
the right
of
disassembly.
and right).
(H
1-43,
1-37).
bearing (HI-36, 56).
of
(H
1-35, 55)
59) and remove gear.
1%
(0.28-inch) open-end wrench on
screws
1-140)
of
from
printer,
the
printer.
by
(H
1-38,
millimeter
..
(H
1-131)
two
but
removing bolts (H I-54)
57),
(0.06-in.) allen wrench, on
from
holder (H 1-133)
allen-head screws (H
drive shaft A on
remove
first
left
holder (H 1-130)
loosen allen-head
right
1-29)
side
from
F.
Ribbon Holding Plate
1.
To
remove
spool holders (HI-55, 35), remove
G.
Reverse
1.
H.
Reversing Rod Connectors
1.
I.
Reassembly
1.
Control Lever
To
remove
right ribbon spool holders
and remove levers. '
To
remove
(HI-51)
To
D.
from
of
reassemble ribbon spool holders (HI-35, 55) reverse order
through
(Left
and Right)
left
and right ribbon holding plate (HI-137)
left
and right
(Left
and Right)
left
and right ribbon reverse
(H
I-55, 35), remove
(Left
and Right)
left
and
right
reversing rod connectors (H 1-90,88)
pins (HI-50) and remove pins.
Ribbon Spool Holders
H.
5-29
control
snap
rings (HI-45).
levers (H
left
and right
from
1-90,
left
and right ribbon
88)
from
left
snap
rings (H 1-48)
from
left
and rings
of
disassembly para.
and
Rev.G
Page 89
RIBBON FEED MECHANISM
J. Ribbon Driving Shaft Assembly
1.
To
disassemble and remove ribbon driving shaft assembly (HI-79),
following
a.
b.
c.
d.
e.
f. Remove bevel
2.
To
reassemble ribbon driving shaft assembly (HI-79), reverse order
steps:
Remove screws (HI-17)
(H 1-84).
Remove screws (HI-86) holding cover (HI-85) and holder (HI-84) together,
releasing entire driving shaft (HI-79). Note,
be
unhooked
Remove
Release
(HI-78) and releasing spring (HI-77) and ball HI-76). (Note,
be
taken
Remove bushing (HI-83) and clutch spring (HI-80)
at right end
from
left
from
cover
(HI-85).
snap
ring (HI-87) on
left
and remove driving gear
to
avoid losing spring and ball).
gear
of
(HI-81)
shaft.
from
side
end
(H
1-75)
shaft
perform
of
printer
of
driving shaft.
by
by
releasing allen-head screw (HI-82)
and remove bushing holder
that
clutch spring (HH-80) must
unscrewing allen-head set-screw
that
caution must
from
shaft (HI-79).
of
disassembly.
the
K. Clutch Gear
(Ref; Fig. 8-5, HB-50)
1.
Prior
(Refer
2.
To
remove clutch
(HI-6)
3.
To
reassemble, reverse order
5.2.10.3 Adjustments
All
adjustments, unless otherwise specified,
at the back
of
the printer.
A. Bevel
1.
Gears
Slide ribbon reversing rod (HI-92)
contacts washer (H
(HI-27)
2.
Adjust
and tightening allen-head screws
one
(H
1-1)
(Direct
to
removing clutch gear (H 1-1), the bushing holder (H
to
para. J .1.a. and J .1.b.).
from
sleeve
(Left
and Right) (HI-27, 43) and (HI-27, 59) (Refer
into
mesh
bevel gear (HI-27)
millimeter
(0.039-in.) .
Drive Transmitted
,and
on the
gear
(HI-1), loosen
(HI-5) and slide
1-1
04) on driving slide shaft A
with
bevel gear (HI-43).
same
Drawing, (Ref.: HI-1)
two
off
sleeve, clutch spring (HI-4) and gear.
of
disassembly, steps K.1. through K.3.
will
be
to
left.
(left
side)
with
(H
1-29)
See
Fig. 5-14, and
from
Forward and Reverse Clutch Shaft
allen-head screws (HI-6)
called
Arm
out
(part
respect
to
obtain engagement A
View
1-84)
must
from
from
a rear view
to
of
reverse
(H
1-103) and moves bevel
to
bevel
gear
(left
Figure 5-14)
control
(HI-43)
of
approximately
A.
be
removed
sleeve
and right)
lever) (HI-88)
gear
by
loosening
Rev. G 5-30
Page 90
RIBBON FEED
MECHANISM
HI·42
ENGAGEMENT
1-1
A
MM
A
DRIVING
-SHAFT
HI·103
SLIDE
A
Figure 5-14. RIBBON FEED MECHANISM (REAR OF PRINTER,
B.
Backlash
When engagement A (Figure 5-14)
with
obtain correct backlash operation
Adjustment
respect
to
bevel
for
gears
Gears
(HI-27, 43) and (HI-27, 59)
has
been
properly adjusted between
(H
1-43,
59), adjust bevel
of
gears
in the
gears
following
(H
NOTE
When performing the
adjust one set
of
gears
next
for
two
steps,
proper
backlash, then move ribbon reversing rod
(HI·92) in opposite direction
gears)
43)
and adjust the
or
through B2.
1.
Loosen allen-head screws
2.
Adjust
bevel
gear
adjustment (engagement
the teeth
of
the opposing
allen-head screws on bevel
other
(HI-27, 59), repeating steps
(See
Figure 5-15).
(H
1-42)
up
or
down on ribbon spool shaft
B)
of
0.05
gears
gear
(to
set'
of
on the bevel
to
0.2 millimeters (0.002-0.008-in.) between
(HI-27)
(H
1-43,
as
59).
engage
gears
B1
they
(H
1-27,
gears
mesh
(H
(H
(See
LEFT
1-43,
59) alternately
manner:
1-43,
59).
1-38,
57)
Figure 5-15).
SIDE)
gears
(HI-27)
to
obtain a vertical
to
righten
Figure 5-15.
Kev.G
HI-43,59
BACKLASH
ADJUSTMENT,
5-31
BEVEL
GEAR (HI-43, 59)
Page 91
c.
Driving Slide Shaft A (HI-103)
If
driving slide shaft A (HI-103)
parts in the
1.
When engagement A and B
snap
other
to
gear
2. When bushings and holders
the driving slide shaft A (HI-103) should move freely and travel
to
with
following
ring (HI-105) always contacts support bushing (HI-130); the distance between
snap
ring (HI-105) and the support bushing (HI-130) on shaft (HI-103)
4 millimeters (0.12-0.16-in.).
(HI-59) and
3.0
to
4.0 millimeters (0.12-0.16-in.) when
bevel
gears
HI·94
manner:
bevel
gear (HI-27)
(HI-27, 43)
is
removed
of
bevel
gears
(See
Figure 5-16). Note
is
(H
1-133, 130) on
or
(HI-27, 59).
RIBBON FEED MECHANISM
to
replaced, adjust ribbon mechanism
has
been
also 3-4 mm.
left
and right side
engaged
(See
Fig. 5-16).
made (Figure
that
alternately in either direction
5-14,5-15),
distance between bevel
of
printer
an
overall distance
one
is
are
installed,
3
Figure 5-16.
D.
Ribbon Reversing Rod (HI-92)
If
ribbon reversing rod
manner:
1.
Thread right-hand coupler
2. With right bevel
between washer (HI-104) and ribbon
4 millimeters (0.12-0.16-in.)
the distance. (Refer
3. Tighten locking
4. Slide both stoppers
allen-screws (HI-96).
DRIVING
(H
gears
to
nut
(H
(HI-95)
1-92)
SLIDE
engaged
Figure 5-17).
1-98)
SHAFT
is
removed, adjust ribbon mechanism in the
(H
1-94)
(HI-27, 59), (right side, rear view) adjust
by
to
prevent
into
5-32
A -
ADJUSTMENT
clockwise all the way (Refer
reverse
rotating ribbon reversing rod
place
control
further
(left
and right) and
arm (HI-88) between 3 and
rotation
following
to
Figure 8-12).
gap
(H
1-92)
to
control
of
ribbon reversing rod.
lock
by
tightening
Rev.G
Page 92
RIBBON FEED MECHANISM
Figure 5-17. RIBBON REVERSING ROD
E.
Control Spring (HI-39) - Ribbon
1.
When
reverse
(HI-92)
bevel
gear
position
(HI-123)
neath
left
control
to
left, and
left
(HI-43)
of
control spring
to
just
ribbon spool shaft H
(left) (HI-88). Note,
slide shaft A (HI-103)
HI-39
ADJUSTMENT
Reverse
lever
(H
1-88)
if
EngagementA (Fig. 5-14) between bevel
is
decreased
(H
1-39)
pass
roller mounted on control spring (HI-39), (located under-
that
both ribbon spools
is
in neutral position (top
by
1-38)
Timing
turns
(Fig. 5-18)
left
by
moving ribbon reversing shaft
gear
to
approximately 1.0 mm (0.039-in.), adjust
loosening screws
over
top
of
will
(H
1-40)
and flatwashers
ramp
of
reverse
control
rotate freely when driving
of
ramp).
(HI-27) and
lever
REVERSE
LEVER
LEFT)
Figure 5-18. RIBBON REVERSE
CONTROL
(RIGHT
HI-8S,
90
OR
5-33
TIMING
Rev.G
Page 93
RIBBON FEED
2.
3. Re-check
F.
Clutch Gear and Driving Gear Engagement (Fig. 8-12, H
1.
2.
MECHANISM
When ribbon
blocked
9.80z)
the ribbon movement
as
indicated in para. 5.2.10.3.
of
spool (empty
by
ribbon guides (part
is
exerted on the
bevel
gear
(HI-27) (right) and
condition)
of
HI-88, 90), a pull
reverse
(See
control
Figure 5-18). .
A.2
and
NOTE
Both
bevel
gear
(HI-27) and bevel
(right and
so
that
left)
they
(HI-42, 59) should
engage
together
mounted on control spring,
of
ramp
of
reverse
control
lever
(Fig. 5-18).
To
ensure clutch
by
loosening screws (HI-17). Also ensure both
gear
(HI-1) and driving
properly and positioned on driving shaft
gear
(HI-75)
Ensure
when spool holder
screw (HI-78).
a.
When carriage
there
b.
When carriage
of
is
0.05
to
0.2 mm (0.002-0.008-in.).
that
torque
is
driving
of
driving
is
held
by
After
making above adjustment, check the
is
moved
no slippage between driving
is
moved
gear
(HI-75) does
gear
(HI-75)
hand.
by
hand and ribbon feed direction
by
hand,
not
containing eyelets (or small plate)
of
220-280 grams (7.7
levers (either
bevel
gear
B.
to
ensure proper ribbon reverse timing.
left
or
right), which
(HI-59) (right)
gear
be
timed
after
roller,
passes
(H
gear
unit.
Adjust
over
top
1-88).
1-1,
75)
(HI-75).are meshed properly, adjust
bevel
gears
(HI-18, 81)
Proper backlash between clutch
does
not
transmit
to
pressure on ball (HI-76)
following
gear
(HI-75) and driving shaft (HI-79).
and
spool
is
held
by
hand, ensure
transmit
to
driving shaft (HI-79).
reverses
to
the
same
are
meshed
driving shaft
by
turning
points:
is
changed,
that
is
OZ-
gap
(HI~79)
set-
see
that
torque
G.
Ribbon Winding
1.
Top
Edge
Curling
When the ribbon winds normally
not
be
curled.
spool holder (right
spool shaft (right
2.
Bottom
If
the lower
Edge
If
or
Curling
edge
the
top
or
left) (HI-38, 57) slightly backward.
of
the ribbon becomes curled, adjust position
edge
left) (HI-35, 55)
into
of
the ribbon
holder (HI-35, 55) by loosening bolts (HI-54)
58) slightly forward.
H. Guide Roller Adjustment (HI-106, 114)
1.
5.2.11
Adjust
to
ELECTRICAL
In general, the parts list
level
of
guide roller (right
or
left)
position guide rollers (HI-119) perpendicular and parallel
HARDWARE
(HJ)
for
this section reflects electrical and mechanical items required
the operator panel and cabling found on the main frame
for
the accessories parts list.
5.2.12 PAPER
STACKER
AND
GUIDE
ribbon spool, the
is
curled, adjust position
by
loosening bolts (HI-54)
to
incline spool holder shaft (HI-57,
(H
1-1
06, 114) by loosening screws
of
the printer. There
edge
of
the ribbon should
of
ribbon
to
incline ribbon
of
ribbon spool
(H
1-117)
to
side
of
machine.,
for
is
no illustrative drawing
Refer
to
Section 2.3
Rev.G
5-34
Page 94
PRINT
HEAD
CARRIAGE
POWER
DRIVER
BOARD
5.2.13
PRINT
HEAD
AND
ASSOCIATED ASSEMBLIES
5.2.13.1 Operation
Print
Head
A.
Acts
(solenoid fired)
B.
Carriage (10)
Supports
C.
Power Driver Board Ass'y (33)
Supplies
ment
D.
Video
Amplifier
solenoids
(4) and Solenoids (2)
as
a guide
to
to
print
head
control
from
Amplifier,
and
of
signals
logic boards.
PC
shapes
head. Mounts
keep
seven
print
form
characters
for
full
line
to
printer
Board Ass'y (101 Series)
video pulse
to
(20).
5.2.13.2 Removal/Replacement Procedure
Print
Head
A.
1.
2.
3. Unplug
(4)
Refer
to
Section 5.2.1.2, steps 1 and 3, and remove covers.
Release
lock-knob (33) (Fig. 8-3) , and then rotate penetration knob (32)
head moves
ficient
gap
print
to
maximum
between
head
print
fingerboard connector (1)
4. Remove upper screws, washers (5,6,7) and lower screws, washers (8,6,7) holding
the
print
head
to
print
head
removal, e.g.,
5.
To
install
Manual, Series 100
upper
print
left,
head, reverse removal/replacement procedure, and refer
for
Forms Thickness Control
(FIGURE
wires in line
from
dots.
of
characters and returns
as
solenoids and forward and rear clutches
with
cables (29) carrying power driver
8-14)
each
one drives against the ribbon
to
"home"
position.
outputs
for
head
to
the carriage ass'y (10) via attached video amp. bracket
so
that
travel away
head and
support
lower right, upper right, lower
from
platen (HE-4) (Fig. 8-8) allowing suf-
print
ribbon.
bracket (9).
from
video
amplifier
Use
diagonal method
left
prior
to
printing.
connector (16).
of
screw
and remove head.
to
Operator
move-
the
B.
Solenoid/s (2)
1.
Turn
power
2.
Perform operation
3. Cut tie-wraps
4. Unsolder
replaced.
5.
Using a small,
6. Using a Centronics' spanner wrench, loosen the solenoid
solenoid and
7.
To
replace solenoid/s reverse procedure para. B., steps
C.
Carriage (10)
1.
Refer
to
D.
Power Driver Board Ass'y (33)
(With
front
cover (Fig.
1.
Unplug ribbon cable fingerboard (34)
off.
found
of
solenoid wires attached
two
wires
phillips~head
print
wire together
in para. 5.2.13.2.A.1. through
from
the fingerboard (1) going
screwdriver, remove the cover
from
print
removal/replacement procedure
8-1/5
removed).
from
5-35
A.4
to
to
remove
print
head fingerboard 63001039-4001.
to
the solenoid/s (2) being
from
the
lock-nut
print
print
(3) and remove
head.
1.
through 6.
of
para. B., 5.2.2.2.B
to
remove carriage.
power driver board connector (16).
head.
head.
Rev.G
Page 95
POWER
DRIVER BOARD
VIDEO AMPLI FIER BOARD
2. Remove ribbon cables (29) and attached fingerboard (34)
remov"ing screw; washer
power driver board.
3.
To
remove heatsink bracket and power driver board together, remove
screws (37) attached
E.
Video
2. Unplug
1.
Amplifier,
For
removal
(20),
first
to
remove ribbon cables
PC
of
perform operation found
print
head
WHEN REMOVING THE VIDEO AMPLIFIER
ASS'Y
IN
NEXT
CONTACT WITH TIMING FENCE (14).
3. Remove video
holding video
amplifier
5.2.13.3 Adjustments (Fig. 8-14)
A. Print
Head
Reverse
(4)
steps found in para. 5.2.13.2. A.1. through A.5.
nut
(37,6,
to
front
Board Ass'y (101 Series)
video
amplifier
from
fingerboard (1)
18) and removing clamp
printer
board (15), attached cables (29), and attached bracket
at
power driver board (33).
from
CAUTION
STEP
amplifier
(3),
AVOID
ass'y and cables by removing screws, washers (11,12.13)
bracket (20)
to
from
base
frame (Ref. HE-1).
'para.
5.2.13.2.0., steps 1 and 2
video
amplifier
connector (16).
SURFACE
carriage mechanism (10).
to
replace head.
cable clamp (38)
from
cable
tray
four
of
by
(40)
of
metric
this section
B.
Solenoid/s (2)
1.
Perform removal/replacement procedures found in para. 5.2.13.2 B.1. through B.6.
2. Install new solenoid/s. Using
print
wire
into
correct hole on the
1.3.1
for
print
wire configuration.
3. Using
4. Tighten solenoid lock nut/s (3).
5. Re-solder new solenoid wires
6. Replace cover, and remount
C.
Ribbon Cables (29)
1.
2. Secure cables, when adjusted properly,
an
eye
loupe,
head jewel (rotate solenoid in
5.2.13.2.A.1. through A.5.
To
position ribbon cables
(38)
of
power driver
a.
Move cables
cables do
print
head
6, 18) on clamp (38).
verify
left
not
strike damper (Fig. HD),
and tray clamp at starting position
tray
or
that
to
for
(40) at
right
flat
object (feeler gauge,
print
head
all
print
wires align flush
or
out).
to
fingerboard
print
head
to
replace
operating
so
front
that
print
condition,
of
printer.
when
by
flat
screwdriver, etc.) guide
jewel. (Refer
of
print
head.
carriage ass'y (Reverse steps
head).
loosen screws (37) on clamp
print
head
is
or
that
cables
of
head.
tightening screws, washer and nuts (37,
to
Section
with
the
front
operating normally the
are
not
too
1,
face
of
para.
tight
para.
of
between
print
Rev. G 5-36
Page 96
SECTION 6
MAINTENANCE
This section contains the
Paragraph
6.1
ELECTRICAL
All
electrical adjustments are summarized in the
ITEM
NO.
1
2
3 *Delayed Strobe Pulse
4
5
* 9 x 7
FUNCTION
Strobe
*Strobe
Delayed Clutch Interval
Feed
Line
Only
ADJUSTMENTS
Pu
Ise
Delay
Pulse
following
6.1
6.2
6.3
6.4
6.5
SIGNAL
NAME
STROBE ME 18-6 2
STBDLY
DELSTB ME 32-5 2
DCLT.
LF
maintenance
(MODEL
information:
Description
Electrical Adjustments
Mechanical Adjustments
Preventive Maintenance
Recommended Tools
Troubleshooting Guide
101/101A)
following
ELEMENT-
PIN
ME 32-14 2
ME 22-6 2
ME 17-14
table and paragraph.
CARD
1
ADJ.
RESISTOR
#
R7
R51
R52
R9
R54 15
PULSE
WIDTH
450
usec
500
usec
450
usec
40
msec
msec
6.1.1
6.2
where adjustments are required and the reference paragraph in Section 5 where
ITEM
NO.
1
2
VIDEO
1.
2.
3.
MECHANICAL
All
3
4
5
6
7
8
9
10
11
AMPLIFIER
Monitor
right.
Voltage varies
highest voltage level observed.
Monitor
2.
mechanical adjustments are summarized in Section 5. Listed
Cover
Carriage Mechanism
Driving Mechanism
Spring Drum
Damper
Frame
Paper Feed Meehan ism
Pin Feed
Form
Ribbon Feed Mechanism
Print
Amplifier
voltage level
level
Th
is
sets
MECHANICAL
Unit
Feed
Mechanism
Head and Associated Assemblies (Video
Bd.,Power
ADJUSTMENT
at
ME 1 pin 2
as
optic
block
at
MEl
pin
3 and adjust R4
up reference level
ADJUSTMENTS
ASSEMBLY
Driver
Bd.)
(SERIES 100)
with
passes
for
over
proper
6-1
oscilloscope
light
and opaque sections
to
set voltage
output
REFERENCE
while
duty
SECTION
5.2.1.3
5.2.2.3
5.2.3.3
5.2.4.3
5.2.5.3
5.2.6.3
5.2.7.3
5.2.8.3
5.2.9.3
5.2.10.3
5.2.13.3
cycle.
moving carriage
at
one-half level recorded
below
PARAGRAPH
5
of
timing
are
the
the
adjustment
slowly
mechanical assemblies
REFERENCE
to
the
fence. Record
at
MEl
is
described.
FIGURE
SECTION 8
8-2
8-3
8-4,8-5
8-6
8-7
8-8
8-9
8-10
8-11
8-12
8-14
Rev.G
pin
Page 97
6.3
PREVENTIVE
MAINTENANCE
(P.M.)
A. Preventive Maintenance Procedures
following
The
1.
Frequency
2.
Time Required - % Hr.
3. Cleaning Material -
P.M. procedures apply
of
P.M. - 6
months.
Two
Soft
Medium Bristle Cleaning Brush
B.
Recommended Tools
1.
Refer
to
Section 6.5
C.
Lubricants Recommended:
Kit,
Lube 62000187-6001
Note: This
of
the Maintenance Section.
kit
contains
item 1 through 4
to
the Series
Approximately
Clean Cloths
101
printers.
1.
2.
3. Lubricant,
4. Lubricant,
D.
Preparation
1.
2.
1.
2.
Lubricant, DTE 0 I L, Light
Lubricant, SAE 10-30W
RPVNTV
WPG;
30050005-0001
30050002-0001
20050009-0001
(Degreaser/ Lubricant)
grease
30050004-0001
(Rheolube 723)
Obtain
Clean
print
printer
sample
with
prior
vacuum cleaner,
to
beginning P.M.
if
available.
NOTE
The
following
printer
Refer
assembly drawing shown
to
assemblies specified
P.M. procedures are keyed
that
drawing
for
the location .of
within
each
in
figure
procedure.
Carriage Assembly and Timing Fence
a.
Using a soft, clean
b.
Wipe the carriage guide bars, all rollers and guide plate.
c.
Print
a.
b.
c.
Lightly
Head
Remove
Using an
head
Re-mount
lubricate guide bars using lightweight oil.
Assembly
print
eye
jewel. (Make
print
head
loupe,
head
cloth,
wipe both
from
carriage
verify
sure
that
that
print
print
wires
on carriage assembly.
sides
of
wires align flush
are
2 oz. plastic
2 oz. plastic
2 oz.
11
oz. tube
to
the
6-1
timing
not
fence.
recessed
bottle
bottle
can
with
the face
in the jewel.)
of
the
print
3. Paper
4. Ribbon
c.
d.
Feed
Assembly
a.
Apply
connected
a.
I nspect ratchets, pawls, and springs
b.
Clean and lubricate all
Feed
a drop
to
Assembly
Clean and lubricate all
Verify
that
both ribbon spools rotate freely when ribbon releasers are in neutral
position (neither spool engaged).
5.
Drive Assembly
a.
I nspect
gears
b. Oil intermediate shaft and
(Use
Anderol
NOTE:
Avoid
surfaces.
Rev.
G 6-2
of
lightweight oil on the paper feed clutch
the solenoid armature.
for
wear and
gears
for
465
use
and springs
gears
and springs
proper
mesh
felt
and wear.
washer
Only).
of
any lubricant on the forward and reverse
with
grease
with
oil
at
forward and
mesh
as
as
indicated.
reverse
gear
and clutch slide pawl
(left
and right).
indicated.
bushings.
clutch
Page 98
:lJ
m
<
b
20
BOXED NUMBERS REFER TO
PREVENTIVE MAINTENANCE
PROCEDURES
IN
SECTION
6.3
14
Figure 6-1.
MODEL
101
MECHANICAL
ASSEMBLER
(PREVENTIVE
MAINTENANCE·REFERENCE
DRAWING)
Page 99
6.4
Recommended Tools
CEnTRDnu:s
CENTRONICS
TOOL
KIT
data computer corp.
HUo.oN
NU,
HA_HU.,
U.I.A.
(63002399-6001)
PART
PART
ITEM
DESCRIPTION
NUMBER
ITEM
DESCRIPTION
NlI4BER
30600002-3001
13.
8
!lin
Canbfnatfon
Open
End.
Box
Wrench
30600002-3012
~
1.
Universal Handle
14.
10
!lin
Canb1nation
Open
End.
Box
Wrench
30600002-3013
15.
17
!lin Canbfnation
Open
End.
Box
Wrench
30600002-3014
_
(1)
16.
19
!lin Canbinatton
Open
End.
Box
Wrench
30600002-3015
~
2.
Extension 4-Inch
30600002-3002
17.
3132-Inch
"TH
Handle
Hex
Key
30600002-3016
(2)
3.
4
!lin
Nut
Driver
30600002-3003
18.
5/32-Inch -T- Handle
Hex
Key
30600002-3017
A
4.
5.5
!lin
Nut
Driver
30600002-3004
19. 1/16-Inch
Hex
Key
30600002-3025
5. 7 !lin
Nut
Driver
30600002-3005
20.
.05a-Inch
Hex
Key
30600002-3024
6. 8
!lin
Nut
Driver
30600002-3006
21.
1. 5
!lin
Hex
Key
30600002-3020
7.
10
!lin
Nut
Drtver
30600002-3007
22.
2.0
II1I'I
Hex
Key
30600002-3019
~
8.
Phl111ps
Head
Screwdriver
30600002 -3009
23.
2.5
II1II
Hex
Key
30600002-3021
C(l
24.
3.0
II1II
Hex
Key
30600002-3022
..j:::I.
/
9.
Slotted
Head
Screwdriver
30600002
-31X1!
~S)l
25.
Spanner
Wrench
63003105-3001
26.
4
nrn
Snap
Ringer Holder
63002399-3018
~
27.
5
II1I'I
Snap
Rfng
Holder
63002399-3019
10.
Needle
Nose
Pl
ier
30600002-3010
#!*C2.'271
2B.
Spring
Hook
63002399-3020
(28)
~2)1
U.
5 x
5.5
!lin
Open
End
Wrench
30600002-3023
12.
6 x 7
nrn
Open
End
Wrench
30600002-3011
29.
Tool
Pouch
30600002-3018
Page 100
Troubleshooting Guide
CENTRONICS
SERIES
101
PRINTERS
SERVICE
GUIDE
The
following information
is
intended to aid service personnel in
developing
good
service procedures
and
troubleshooting techniques of
any
of Centronics' Series
100
printers.
When
servicing the
printer
for
any
reason, a
brief
inspection
and
verification
of the
printer
areas described below,
may
well prevent
potential
failures
in the
future.
To
perform
this
inspection,
it
is
only necessary to open, not
remove,
the
printer
covers.
With
printer
power
off:
1. Verify
that
the timing fence
is
clean
and
that
timing fence
is
centered properly in opti£ block.
2.
Verify
that
the
carriage
guide bar
is
clean
and
free
of caked-on
dirt.
3. Verify proper tension
on
the
main
drive
belt.
4.
Verify smooth,
free
carriage motion.
5. Verify
that
the
RTP
and
EOP
switches
are
not loose.
6. Verify
that
the rubber
bumper
on
the
damper
is
not loose.
7. Verify
that
the backstop
pawl
spring
is
in place
and
not loose.
8.
Check
the pin
ali~nment
on
the pin-feed
tractor
units.
With
printer
power
on:
9.
Check
position of
VFU
paper tape over the
LED
holes to insure
proper detection of
vertical
tab
and
form
feed
signals.
10.
Check
damper
operation
and
verify
that
there
is
no
binding of the
carriage stopper lever.
11.
Check
for
smooth
operation of the
line
feed
clutch.
~UBLESHOOTING
GUIDE
* SERIES
101
A
B
c
o
POWER
FAILURE
IMPROPER
PRINTING
DRIVE
FAILURE
RIBBON FEED
FAILURE
E PAPER MOVEMENT
FAILURE
MALFUNCTION
....
PROBABLE
CAUSE
....
~~======~----
____________
E]
~1;NT=E=R=M=IT=T=EN=T=/P=A=R=TI=A=L==~----------------------_E3
HEAD MOVES BUT
NO
PRINTING/POOR REGISTRATION
OR
ERRATIC PRINT
~
MISSING DOTS.
POOR
OR
INTERMITTENT REGISTRATION
ALL
CHARACTERS
~
~M=I=SS::I
N=G=O=R=E=X=T
R=A=D=O=T=S,=C::E:_RT--A..:....I
N..:....c:..:.H..:....A..:....R:....:..Ac:.:T..:E:..::RS:...:O::.N:.:L...:...y
_________
§]
LINES ACROSS
PAGE
r:-:1
~===========------------------~
~C=A=R=R=IA=G=E=M=OV=E=M=E=NT=E=R=R=A:-TI~C-----------------------~
~C=A=R=R=IA=G=E
::ST=IC::K::S:::O::R::B::IN::D::S :-_______________________
§]
~-------------------------------~
~~~~~~~~~~-------------~
FORWARD CLUTCH
DOES
NOT TURN OFF
~~F~OR~W~A~R~D~C-LU~T-CH~D:....:..O~E--S:.:NO--T..:T--U...:...R:.:N~ON----------------~
'I-:B:=O=TH~C:-:-L-:-:U::-:TC:-:-H~ES--L--O:..:C..:..KE--D~W--H-=EN..:..:.:..:...PR.::.:IN..:...T-E-R
-PO-W-E-RE-O-U-P------
W
~~R~E~V~ER=S~E~C~LU--T~CH~DO--E~S-N-OT--TU-R-N-O-F-F~~~~-----~
~------------------~~-----------------~
~---------------------------------~
~==========~----------------~
~==========~----------------~
~~~~~~--------------~
'I~~~~---------------------------------~
~~T~EA~R~IN~G~---------------------------uu
r-~=========~---------------~
~==========~~~------------~
~==========~------------------~
~--------------------------------~
~I=N=TE=R=M=IT::T=EN::T=O=P=E=RA=T=IO=N=----------------------
§]
~==========~----------------~
~==========~----------------~
~~==========-------------------~
~~~~~------------------~
·TTL:
MODELS 101,
lOlA,
101S
ONLY
LSI:
MODEL 101AL
ONLY
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