Centronics 704 User manual

-
a
.
,
«
Ln
4
AUG 1979
Centronics
No.
37400700
Rev-1
Ta Re mm Rad Seb Oo
Mee SOT me tte eee
TECHINIGAL
MANUAL
Pens ecient ee nF nee etn eee vat
CENTRONICS’
data computer corporation
Hudson, New Hampshire 03051
Telephone [phone]

THE INFORMATION CONTAINED HEREIN [S
PROPRIETARY AND !IS NOT TO BE RELEASED
OR REPRODUCED WITHOUT WRITTEN PER-
MISSION OF CENTRONICS data computer corp.
CENTRONICS
Centronics Data Computer Corp.
Hudson, N.H. 03051
Tel. [phone], TWX. [phone], TLX. 94-3404
Eastern Region (Mass.): Tel. [phone]
Central Region (Texas): Tel. [phone], TWX. 910-890-4916
Western Region (Calif.): Tel. [phone], TWX. 910-595-1925
Centronics Data Computer (Canada) Ltd.
Mississauga, Ontario
Tel. [phone], TWX. 610-492-4382
Centronics Data Computer (U.K.) Ltd.
London, England
Tel. [phone], TLX. 8951373
Centronics Data Computer (France)
50 Rue Dombasie, 75015 Paris, France
Tel. [phone], TLX. 202686
Centronics Data Computer (Germany), Gmbh
6000 Frankfurt am Main 71
Tel. [phone], TLX. 841-413224
Centronics of Puerto Rico
Dorado, Puerto Rico
Tel. [phone], TLX. 385-9349
copyright 197§$ Centronics Data Computer Corp.
All rights reserved
Patents pending in U.S.A. and other countries
Printed in U.S.A.
Specifications subject to change without notice.
In the U.S.A., for fast service call toll free 1-800-258-1952

TECHNICAL
MANUAL
MODEL 704 PRINTER
CENTRONICS’
data computer corporation
Hudson, New Hampshire 03051
Telephone [phone]

TABLE OF CONTENTS
SECTION 1
INTRODUCTION
Section
1.1 MANUALS. «© 2 2 «© «© «© «© «@
1.2 GENERAL DESCRIPTION. . +2 eo e
1.3 PHYSICAL DESCRIPTION . « o« -«
1.321 Print Mechanism . . .
12-342 Electronics. . «2. e e
123.3 Paper Handling Mechanism
1.4 PRINTER OPERATION - - + «© -
1-4-1 Character Printing - .
124.2 Paper Motion . .- « .e
1-4.3 Special Functions. e °
1.5 SPECIFICATIONS SUMMARY. . . .
SECTION 2
INSTALLATION/SET-UP
2e1 INTRODUCTION ~© «© © © e© oe .e
202 FLOOR PLANNING -«© «© «© oc e e
203 SET-UP PROCEDURES e e e e e
SECTION 3
THEORY OF OPERATION
3e1 OVERALL OPERATION . + ce o« -«
301.1 Input/Output Signals °
301.2 Microprocessor control .
321.3 Memory Organization. .
3.2 MICROPROCESSOR (MPU) . «© « «
3e2e1 Architecture e e e e ° e
3e2Qe2 Timing e e e e ® e e e
36223 Basic MPU Operation . . « .e
30204 Microprocessor Program Control
-j-
4=3
1-3
1-3
1-4
1-7
1-7
3-4
3-4
3-6
3-6
3-9

TABLE OF CONTENTS (cont'd)
Section
3.3
35
3.7
3.8
3.9
3.10
BUS STRUCTURE»~ «© « o «+ e
3.1 General Description .
32 Detailed Description
033 Input Data Transfers.
3.4 I/O Bus Transfers. .
SYSTEM TIMING \ e e ee e@
SERIAL COMMUNICATIONS « « e«
3-5-1 Input Data e ° ° ®
3.5.2 Output Datae e ° e
CONTROL CHARACTERS »« «.« co e
. Firmware Response .
3.6.1
36-2 Control Codese . .«
6
6
MRI AND DEVICE SELECT DECODING
367.1 Device Select . . .e
3e7e2 MRI Decoding e e e
CONTROL PANEL/MPU COMMUNICATIONS
VFU Reader/MPU COMMUNICATIONS
PRINTER MECHANISM OPERATION . e
3-10.1 Carriage Motor Operation
3210-2 VIDINT Generation e
3e-10.3 Character Generation.
MISCELLANEOUS OPERATIONS e
3-11.-1 Audio Alarm e ee e
3e11-2 Paper Out e e e e
3211-3 Motor Control « . .
STEPPER MOTOR OPERATION . .-
POWER DISTRIBUTION ~ -«© «© e
3-18
3-19
3-20
3-20
3-23
3-24
3-24
3-26
3-27
3-29
3-29
3-30
3-31
3-35
3-35
3-35
3-36
3-36
3<38
3-41

ATO ng SR Re MN: IE ree ne 9
TABLE OF CONTENTS (cont'd)
-1ii-
®
Section
SECTION
4
MAINTENANCE
4.1 INTRODUCTION ~ .« 6 «© © ee e« e
4.2 PRINTER MARKING AND CONFIGURATION .
4.2.1 Centronics Nameplate . .
4.262 Fuse Marking and Location .
4.2.3 logic Board Marking and Configuration
4.2.4 Dip Switch Settings, Control Panel .
4.3 RECOMMENDED PREVENTIVE MAINTENANCE.
4.4 TROUBLESHOOTING GUIDE ~ .«. 26 e« e
4.5 RECOMMENDED TOOLS .© +26 e« e« e oe.
SECTION 5
ADJUSTMENTS
5 e 1 INTRODUCTION e e e e ‘eo e e e
5.2 CHARACTER PRINTING ADJUSTMENTS ..
5.2.1 Penetration Adjustment, Print Head
522-2 Timing Fence Adjustment. .
522-3 Carriage Actuator Arms Adjustment
5.2.4 Main Drive Belt Adjustment.
5.3 PAPER MOTION ADJUSTMENTS ~ -« e« -«
5.3.1 Paper Feed Timing Belt Adjustment
523-2 Platen Adjustment. . . .
5-323 Tractor Drive Timing Belt Tension
5.3.4 Paper Tension Adjustment.
5.4 ELECTRICAL ADJUSTMENTS 2° e e«
5.4.1 Video Amplifier Adjustments
5.4.2 Logic Board Adjustments. .
SECTION 6
REMOVAL/ REPLACEMENT
6.1 INTRODUCTION ~ «© 5» © © «© e« «
6. 2 COVER ASSEMBLIES . e oe e e e e
6.3 PRINT HEAD ASSEMBLY. . . .. .
6.4 POWER DRIVER BOARD ASSEMBLY . . .
6.5 TIMING FENCE ASSEMBLY - 2. « o« .
6.6 VIDEO AMPLIFIER ASSEMBLY . . . .
4-1
4-2
4-2
4-9
4~11
4-13
5=1
5-2
5=3
5=3
5-4
5-4
5=5
5=5
5-6
5-6
5-6
5-9
6-4
6-5
6-6

TABLE OF CONTENTS (cont'd)
Section
6.7 RIBBON CARTRIDGE ASSEMBLY . 28 ee
6.8 LIGHTWEIGHT CARRIAGE ASSEMBLY . . .-
6.9 STEPPER MOTOR ASSEMBLY, CARRIAGE DRIVE
6.10 STEPPER MOTOR ASSEMBLY, PAPER DRIVE .
6.11 PLATEN ASSEMBLY © 28 © © e © 8
6.12 VERTICAL FORMAT UNIT ~© -© «© © » -»
6.13 TRACTOR DRIVE ASSEMBLY °° es e ee
6.14 PIN FEED TRACTORS, LEFT/RIGHT . . .
6.15 PRIMARY VOLTAGE ASSEMBLY . . . e« -
6.16 CAPACITOR/DIODE BRIDGE ASSEMBLY 2.
6.17 FAN ASSEMBLY * e «© e© © © «
6.18 LOGIC BOARD ASSEMBLY . .« .« « -« .e
6.19 CONTROL PANEL ASSEMBLY © ©e© © © e
SECTION 7
ELECTRICAL DRAWINGS
APPENDIX
SIGNAL GLOSSARY
6-10
6-11
6-12
6-13
6-14
6-14
6-16
6-17
6-18
6-19
6-20

2-2
3=1
3-3 ©
3=4
3-5
3-6
3-7
3=8
3-9
3-10
3-11
3-12
3-13
3-14
3-15
3-16
3-17
3-18
3-19
3-20
3-21
3-22
3-23
3-24
3-25
3-26
3-27
4-1
4=2
4=3
5-1
5=2
5=3
LIST OF ILLUSTRATIONS
Model 704 Printer. . . .« «© e« «6 «o « «
Major Assemblies ~- .« .« .« «.« « «ce e« e« -e
Printer Basic Block Diagram . . . .« « -
Printer Pictorial Diagram. . . . « « e
Character Printing/Paper Motion . . . .e« .e
Printer Outline Drawing. . . .« .« .« e« e
Set-Up Proc edur eS e e e e e e ° ® e e
Overall Block Diagram . . . . « «o« « .e
Memory Map - +« +« e« «© © e © © © « -«
8080A Microprocessor Pin Designations . . .
MPU Block Diagram. . .« +« «+ « «« « « e
Typical Output Instruction Cycle Timing . .
MPU Status Word . . +6 « «© © «© «© « e
Bus Structure Block Diagram . . .« .« « e
$1/82 MPU Timing Circuit © e © e « ef
G$2BY2/P2BY8 Timing Circuit . °° © e © e
Data Bus Assignments (Baud Rate Commands). .
Control Panel Status Word . . -« .« « « «
Exploded Section of Timing Fence. . . e« .«
Video Amplifier Simplified Schematic . . .
Video Edge Detector Circuit/Timing . . . .-
Miscellaneous Operations . e« «.« «+« « e« -.
Basic Stepping Motor Operation . .-« «+ «+ .e
Stepper Motor Drive Circuit ele le lls
Power Distribution Diagram. .« + «© «+ e e
~- FLOW CHARTS -
Printer Initialization .~. .« .« c« -« .« e «
Main Program Monitoring loop - -« + e« e e
Print Routine ~. . «.« «- e« © «e« «e« se e -«
Video Interrupt Routine. . .« e« « e e e
Carriage Drive Interrupt Routine. . . .« .
Paper Drive Interrupt Routine. .« . .« e« e
Control Character Interrupt Routine. . . .
VFU Paper Tape Load Routine . . .« .« e e
Control Character Interrupt Routine. . . .
Centronics Nameplate. . . +« e« .« e e« «
logic Board Marking «© -« +« e« « « e « e
Dip Switch Setting (Control Panel) - . -« .-
Recommended Tools © 8 © © © © «© e@ -@
Penetration Adjustment (Print Head Assembly).
Timing Fence Adjusttment . -« +« « oc « -e
Carriage Actuator Arms Adjustment -. + « -
==
2~1
2-3
3-0
3-2
3-4
3-5
3-7
3-8
3-10
3=17
3-18
3-19
3-27
3-30
3-31
3-32
3-36
3-38
3-39
3-41
3-42
3-43
3-44
3-45
3-46
3-47
3-48
3-49
3-49
4-1
4-2
4-3
4-13
5=2
52
5=3

oy Ongena a 8 Eo San cc amg
Figure
5-4
5=5
5-6
5-7
5-8
5-9
5-10
5-11
6-1
6-2
6-3
6-4
6=5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-13
6-14
6-15
6-16
6-17
7=1
7-2
7=3
7-4
7=5
7-6
7=7
7-9
7-10
LIST OF ILLUSTRATIONS
Main Drive Belt Adjustment. . .
Paper Feed Timing Belt Adjustment
Platen Adjustment ©. © © © -»
Tractor Drive Timing Belt Tension
Paper Tension Adjustment . . «
Optical Pickup/Timing Fence Alignment
Optical Pickup, Vertical Alignment .
Duty Cycle and Phase Adjustment of Video
~ REMOVAL/ REPLACEMENT -
Cover Assemblies ~- .« .« .« e«
Print Head Assembly ~ . .« e« e-
Power Driver Board Assembly . .
Timing Fence Assembly . . .« «
Video Amplifier Assembly . . .
Ribbon Cartridge Assembly . . .
Carriage Assembly °° 8 e© «© e
Stepper Motor Assembly, Carriage Drive.
Stepper Motor Assembly, Paper Drive.
Platen Assembly . .-« .« .« o «
Vertical Format Unite . . e« .
Tractor Drive Assembly Pin Feed Tractors,
Primary Voltage Assembly .. .
Capacitor/Diode Bridge Assy . .
Fan Assembly .« -« « 6 e« e« «
Logic Board Assembly. . . « «
Control Panel Assembly . . . .
~- FUNCTIONAL SCHEMATICS =
Data/IO/Address BuS «© .« .« «= .«
Input Data ~ .« «© «© «© © ee «@
Device Select . .« « .« .o« « e
Control Panel/MPU. ° ° e e °
VFU Reader/MPU. e e e . e e
CG/STM/CRM/MPU. .« e« «© © e« e
- SCHEMATIC DIAGRAMS
Logic Board © 6 © © © « e
Power Driver Board .~ .« +e « .e
Video Amplifier Board . . . .-
Control Panel Board . . »« « .
e
o
5-4
5-4
5=5
5-5
5-6
5-7
5-7
5-9
6-0
6=3
6-4
6-5
6-6
6-7
6~9
6-10
6-11
6-12
6-13
6-15
6-16
6-17
6-18
6-19
6-20
7=3/7=4
7-5/7-6
7=7/7-8
7-9/7=10
7=11/7=12
7~13/7-14
7-18 _
7=19
72 1
7-22

Figure
7=11
7-12
7=13
7=14
7-15
7-16
7~17
LIST OF ILLUSTRATIONS
- WIRING DIAGRAMS -
Interconnecting . .« « « e« e
Primary Voltage . .« +2« e« e -»
- ASSEMBLY DIAGRAMS
logic Board .~ . .« «© « e« e«
Power Driver Board ~« .« c+ .e. e
Video Amplifier Board . . .« .e
Control Panel. .«. + « «+c © e
I/O EIA Cablee .« «© © c© eo e
-vii-
7-23
7-24
7=26
7-28
7=29
7=30
7=31

“Naas

2s caer cee me ep
SECTION I
INTRODUCTION
1.1 MANUALS
This technical manual is part of a series providing complete
documentation for the Model 704. The three manual series, with part
numbers, is listed below.
TITLE PART NO.
Technical Manual 37400700
Operator's Manual 37400701
Illustrated Parts Breakdown Manual 37400702
1.2. GENERAL DESCRIPTION (Figure 1-1)
The Model 704 is a 132=-column, dot matrix printer with an intergrated
RS=-232C asynchronous interface and a 9-foot EIA input cable. The printer uses
microprocessor technology and prints bidirectionally. Maximum throughput is
achieved with the bidirectional print head which seeks the shortest path to
the next line of data when printing successive lines of data. Print speed is
180 characters-per-second for the standard 7x7 dot matrix. Stepper motors
control print head and paper movement. A six key control panel and DIP
switches are used for operator control. The logic board contains circuitry
for receiving serial data from a data set or modem. The RS=-232C interface
portion of the logic provides serial-to-parallel data conversion, buffers each
data character and generates interrupts to synchronize the microprocessor with
the serial data communications link. .
The remainder of the logic consists of a 256 character input buffer,
a 132 character print buffer and PROM's for firmware storage and character
generation. Print mechanism control circuits provide the final output to the
print head and stepper motors for carriage motion and paper movement.
00501
Figure 1-1. MODEL 704 PRINTER
1=1

1.3 PHYSICAL DESCRIPTION (Figure 1-2)
The printer is completely self-contained, including the printer
mechanism with micoprocessor electronics and integral power supplies.
Optional features are available to adapt the printer to specific needs. ;
The printer covers include several plastic covers and one sheet
metal cover. The top cover, the two side covers, and the front cover are
plastic, and
the rear cover is sheet metal. The front cover has an opening °
for the control panel in the lower left corner.
10208
TRACTOR
PAPER FEED
A! ELECTRONIC VFU
a Yo (OPTIONAL)
ee
PAPER TENSIONER
PLATEN KNOB
Het omnen [ES
VF \ <—
=
Ne
SPEAKER
(AUDIO ALARM)
EAR BAR
CONTROL PANEL
PRINTER STAND
(OPTIONAL)
Figure 1-2. MAJOR ASSEMBLIES
*
.
‘Neepeen'
ee OO a

The printer consists of three major units: the print mechanisn,
the electronics, and the paper handling mechanism.
1.3.1 PRINT MECHANISM
The print mechanism consists of the carriage assembly, drive mechanism
and print head. The drive contains a stepper motor which drives a continuous
belt that transports the print head and carriage assembly back and forth along
the platen.
1.3.-2 ELECTRONICS
Printer control is provided by the electronics which consists of the
input power transformer, DC power supply, video amplifier, logic card,
and power driver board. The logic card contains the RS-232C serial interface,
microprocessor, firmware, control logic, and power supply regulators. The
power driver board is located in front of the printer behind the front cover.
It provides the drive signals for the print head solenoids and stepper motors.
The video amplifier receives pulses from a timing fence to synchronize the
head firing.
1-3-3 PAPER HANDLING MECHANISM
The paper handling mechanism is a tractor feed unit accommodating
fan-fold forms up to 17.3 inch wide with a 13.2 inch maximum print width.
The printer has a rear paper feed and a bottom paper feed. Both can
handle up to six-part forms at a slew rate of 15 inches per second (ips). The
standard vertical line spacing is 6 lines per inch (lpi) with 8 lpi optional.
1.4 PRINTER OPERATION (Figure 1-3, 1-4)
Figure 1-3 is a basic block diagram of the printer, and Figure 1-4 isa
pictorial diagram illustrating the particular printer components and how they
relate to the main logic board.
The printer uses a microprocessor that controls printer operations.
Under program control, the microprocessor, located on the logic board,
controls the receiving of serial data via the I/O controller chip and monitors
the control panel. Also, the microprocessor initiates movement of the print
head carriage and paper, and monitors feedback from the limit switches, video
system, optional electronic vertical format unit (EVFU), and the paper empty
switch to effect proper execution of these motion commands. It maintains a
record of the position of the print head at all times, provides printer status
information to the attached devices, and performs other “housekeeping” functions.

OPTION
PORT®
*Option port can accommodate devices
such as, character buffer option board.
CONTROL DATA
» MICROPROCESSOR CONTROL WRITE PULSES PRINT.
a
DATA SET OR SERIAL DATAIN MEMORY & SUPPORT LOGIC HEAD
INPUT DEVICE |
STATUS LINES
eee
L_—_—__._ * DATA INPUT
© PRINT COMMAND HEAD MOTION one
CONTROL
* PAPER MOVEMENT
OPERATOR SWITCHES, INDICATORS
CONTROL * SPECIAL FUNCTIONS
PANEL
CONTROL
PAPER
MOTION
paren
CONTROL
READY TO END OF PAPER
PRINT PRINT EMPTY
SWITCH SWITCH SWITCH VIDEO 1,2
SPEAKER
VIDEO
SySTEM & Aupio
TIMING OPTION
FENCE )
Figure 1-3.
VFUCHI-VFUCHI2
ELECTRONIC
VERTICAL
FORMAT
UNIT
OPTION
PRINTER BASIC BLOCK DIAGRAM
10210
CARRIAGE
STEPPER
MOTOR
LIN
FEED (PAPER)
STEPPER MOTOR
Basically, all printer functions can be grouped into one of three
categories: (1) character printing, (2) paper motion, and (3) auxiliary
functions such as automatic motor control, audio alarm, etc.
1.4.1 CHARACTER PRINTING (Figure 1-5)
In the printer, characters are printed by selectively activating
the print wires aligned in a vertical column in the print head.
As the
head moves across the paper, the appropriate print wires are momentarily
activated, driving them against the ribbon, paper and platen to form the
specified dot pattern.
Nene’

ELECTRON
VERTICAL FORMAT
UNIT(VEU) (OPTION)
Xe
LEFT MARGIN INDICATOR
RIGHT MARGIN INDICATO
CIRCUIT BREAKER re
TRANSFORMER
FILTER _
RB,
DIODE BRIDGES
PAPER
STEPPER MOTOR
PAPER
{MOVEMENT
SOLENOIDS SIGNALS
79
LOGIC BOARD
® MICROPROCESSOR
@ PROGRAM
e MEMORY PRINT HEAD &
CARRIAGE ASSEMBLY
@ SUPPORT LOGIC
POWER SUPPLIES
POWER DRIVERS
VIDEO
| HEAD MOTION
TIMING
FENCE
CARRIAGE
STEPPER
MOTOR
CONTROL PANEL
PAPER EMPTY
SWITCH
R EOP
Figure 1-4. PRINTER PICTORIAL DIAGRAM

20104
TRACTOR
DRIVE BELT
PLATEN
PIN FEED TRACTOR
PAPER ORIVE
CARRIAGE
ORIVE BELT =|} &
ELECTRONIC VFU
(OPTION)
VIOEO AMP. a
ASSEMBLY
PRINT HEAD CARRIAGE
ASSEMBLY RIBBON
CARTRIDGE
¢
CARRIAGE DRI
STEPPER MOTOR
Figure 1-5. CHARACTER PRINTING/PAPER MOTION
The print commands to the print wires are developed by programmable
read-only memories (PROM‘s). To extract print information, the microprocessor
addresses a PROM memory location for each column within a character.
As shown in Figure 1-5, the print head is attached to the carriage -
assembly, which in turn is attached to a rotating carriage drive belt. The
carriage is driven in the forward direction or in the reverse direction by
the carriage stepper motor which rotates the belt clockwise (forward direction)
or counterclockwise (reverse direction).
1-6 - ic

1.4.2 PAPER MOTION (Figure 1-5)
Paper can be moved manually by pushing in and rotating the platen
knob, or automatically by any of three paper motion commands: line feed,
vertical tab and form feed.
Torque from the paper stepper motor is applied to the tractor drive
gears. Paper is advanced one line by momentarily activating the paper
stepper motor, which turns the drive gears to advance paper by one line. When
using the tractor unit with the electronic vertical format option, vertical
tab and form feed operations are accomplished by activating the paper stepper
motor until the amount of paper movement programmed into the microprocessor
has been completed.
The electronic vertical format option allows vertical tab, form feed
and bottom of form operations to be controlled electronically by data memory.
The memory can be loaded either locally through a hand-fed paper tape reader
or remotely by downstream loading on the data lines. The paper tape must be
pulled through the reader by the operator each time the printer is powered-up
or when a format change is required. The memory holds the “tape image" which
is electronically “rotated" as paper is advanced.
If the electronic vertical format option is not used, then a vertical
tab operation moves paper 1 inch (6 line feeds) and a form feed operation
moves paper 11 inches or 12 inches, as prescribed by the customer. This
feature is preset in the option, PROM, and also determines forms control if
the electronic vertical format option is installed but memory is not loaded.
1.4.3 SPECIAL FUNCTIONS
As a standard feature, the printer contains an automatic motor
control which turns off the carriage and paper stepper motors when no data
is received. The motors are then automatically turned on whenever a print
_ OF paper motion command is received.
Also as a standard feature, the printer has a self-test capability
which is activated by depressing the OVERRIDE switch while the printer is
deselected. The printer automatically prints out both character sets and
the hexadecimal equivalent for each of the 32, 8=-bit locations in the option
PROM.
An optional audio alarm is available for alerting the operator of a
special condition. An audible tone from a speaker is sounded by software
command (bell code - 07,¢) or by a paper empty condition.
In addition to printable character codes, the printer also recognizes
certain special control codes. Refer to the operators manual for a list of
these control codes and the actions performed upon receiving these codes.

1.5 SPECIFICATIONS
SUMMARY
' Baud Rate eo ce © e
Data Format « « e« e
Input Code .« « « -«
Buffers eo 28© © &© @ @
Line Protocol . . .«
EIA DATA
e e e e o ° 9 e
(Buffer Full Indication)
Printing Method . .
Dot Matrix e ® e e
Print Formate. . . .«
Number of Copies. .
Character Set « e« e
Print Speed « « « «
Vertical Format . .-
Paper Entry « « « -«
Auto Line Feed. « .-«
Paper Feed. « « e« -@
Switches . -« « « e
IndicatorS «. « e e
Manual Controls . .
INPUT
« 110,150,300, 1200,2400,4800,9600
(switch selectable)
- 1 start bit, 7 data bits, 1 parity bit,
and 1 or 2 stop bits. This data word
must contain 10 or 11 bits.
- 96 character ASCII
« One line print buffer and 256 character
input buffer.
« X~On/X-Off or Reverse Channel or
Data Terminal Ready (switch selectable)
- Impact, character by character, bidirectional
e Standard - 7x7 dot matrix (7 pins high),
7x9 or 9x9 dot matrix (9 pins high)
e 10 characters per inch
« Prints original and up to five carbon copies
e Standard: 96 character ASCII
Optional: 96 character sets
¢ 180 cps (7x7 dot matrix)
165 cps (9x7 or 9x9 dot matrix)
PAPER ADVANCE
- 6 lines per inch
- Rear and Bottom Feed
- Automatic line feed on carriage return
(DIP switch selectable)
e Rear or Bottom Tractor Feed
17.3 inches (439 mm) maximum paper width
13.2 inches (335 mm) maximum print width
CONTROLS AND INDICATORS
eo ee ee 8 8 @
« Standard: Power, Select, LF, Override and TOF
Optional: Double LF, 6/8 LPI
« Standard: Power, Select and Alert
Optional: Audio Alarm
- Forms Thickness, Paper Advance, Paper
Tensioner |
' PYHSICAL/ENVI RONMENTAL/ELECTRICAL
Height. « »« « 0 e« «
Depth « « « « » « e«
Width .« « « « « « e
Weight. + « « « « e
Temperature .« « » e«
Humidi ty e e e e e
Input Voltage .« . -»
A aR A FREE ENR ym A Sime Nate engi pena
« 8.0 inches (203 mm)
« 19.5 inches (495 mm)
« 24.5 inches (622 mm)
« 60 lbs (27Kg) (without stand)
« Operating: 40° to 100°F
(44° to 38°C)
Storage: -35° to 130°F
(-379° to 55°9¢C)
e Operating: 20% to 90% (No Condensation)
Storage: 5% to 95% (No Condensation)
- 60 Hz; 115VAC, +10%/-15% of nominal .
50 Hz; 230VAC, +10%/-15% of nominal
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