Digital Equipment Letterwriter 100 User manual

EK-LWI 00-IN-001
Letterwr
Installatio

by EducationalServices
of
ital Equipment Corporation

First Edition, June 1982
Copyright
@ 1982 by Digital Equipment Corporation
All Rights Reserved
The material in this manual
is for informational
purposes and
is subject to change without notice.
Digital Equipment Corporation assumes no
responsibility for any errors that may appear in
this manual.
Printed in U.S.A.
The following are trademarks of Digital Equipment
Corporation, Maynard, Massachusetts.
DEC DECnet IAS
DECUS DECsystem-10 MASSBUS
Digital Logo DECsystem-20 PDT
PDP
DECwr iter RSTS
UNIBUS
DIBOL RSX
VAX Ed uSystem VMS
VT

CONTENTS
INTRODUCTION
APTER 1 SITE CONSIDERATIONS
CHAPTER
2 UNPACKING AND REPACKING
....
Unpacking ............................................. 2-1
CHAPTER
3 INSTALLATION INFORMATION
......................................
~nstallationChecklist
.....................................
Installation Procedures
.........................
Nylon Cable Tie Removal
................
AC 1nput'Voltage Range Selection
...
Option ~nstallation ..........................
..........................
Line Cord Installation
....................
Interface Cable Installation
...................
Ribbon Carkridge Installation
.................
Single Sheet Paper Installation
..........................
Roll Paper ~nstallation
................
Loading Tractor Feed Paper/Forms
Power-Up
..............................e.........
............................
Printhead Adjustment
Terminal Self-Test
..............................
JUMPER SELECTION
Site Considerations
............................. 1-2
iii

INTRODUCTION
The Letterwriter 100 User Documentation Package describes all
models of Letterwriter 100 terminals. The documents are for three
general audiences:
@ the hardware installer who needs specific installation
and checkout information,
@ the operator who needs general operating information, and
@ the applications programmer who needs interface and
control function descriptions.
Letterwriter 100 documentation
is divided into three books:
a Installation Guide
@ Operator Guide
e Programmer Reference Guide.
This installation guide describes how to unpack, install, power
up and check out Letterwriter 100 terminals. The guide
is divided
into the following chapters
:
Site Preparation -- describes the enviromental and power
considerations for the Letterwriter 100. Read this chapter before
installing the terminal.
ter 2 Unpacking/Repacking -- Detailed illustrations show how
to unpack and repack the terminal.
apter
3 Installation -- includes the procedure to install and
verify proper operation of the Letterwriter 100.

Chapter 4 Jumper Selection -- describes removing the answerback
protect and auto answerback jumpers.
WARNINGS, CAUTIONS
AND NOTES
In this guide, warnings, cautions, and notes are used for specific
purposes. Warnings highlight information that prevents personal
injury. Cautions highlight information that prevents damage to
the terminal. Notes highlight general information.

CHAPTER
SITE CONSIDERATIONS
Install the Letterwriter 100
terminal in an area that
is free
from excessive dust, dirt,,
corrosive fumes, and vapors. To
prevent overheating, do not block
the ventilation openings on the
bottom of the terminal. Table
1-1
lists terminal environmental and
power requirements. Figure
1-1
shows terminal dimensions,

Table 1-1 Site Considerations
Site Consideration Specification
Temperature
lgO to 48' C (50' to lC'dO F)
Relative Eumidity !.P to 9f? percent with a rnaximut-n
wetobulb temperature of 2s0
C
(92 F) anc? c7 minimum dew point
of 2O
C (36' F) noncondensing
Input Voltage
90 to 128 VAC
18F to 255 VAC
(ski tch selectable)
Power Consunption Printing
45 wztts maximum
Nonprintinq
25 watts maximum
Power Feceptacle Nonswi tched
, three prong,
grounded receptacle

CHAPTER 2
UNPACKING AND REPACKING
UNPACKING
Perform the following procedure to
unpack and inspect the
Letterwriter 100. You need a pair
of diagonal cutters.
1. Open the top of the
shipping carton.
2. Lift the terminal up and
out of the carton and
place
it on a flat, clean
work surface.
3. Remove the shock
absorbing material and
packing from around the
terminal.
NOTE: Save the carton and packing
materials to repack the terminal
in case you have to move the
-- ------- -
terminal to another location.
4. Remove the documentation
package, power cord, and
any other cables.
5. Carefully inspect the
housing and carriage
assembly for obvious
shipping damage. Check
the enclosed packing
list
for lost or missing
items. If any
item is
damaged, contact the
shipper. If any
item is
missing, contact your
local DIGITAL sales
representative.
6. Wipe the outer surfaces
with a clean, soft,
lint-free cloth, if
necessary.

INSTALLATION IN
INSTALLATION CHECKLIST
Remove nylon cable tie.
Select ac input voltage
range,
Install any options.
Plug line cord into
terminal and wall
receptacle.
Connect interface cable,
Install ribbon cartridge,
Install paper.
Turn power on.
Ad
j ust printhead.
Perform self-test.
INSTALLATION
Perform the following procedure to
install the Letterwriter 100. You
will need a small slotted
screwdriver or a ballpoint pen,

ove the Ny Cable Tie,
1. Lift the access cover.
2. Clip and remove the nylon
cable
tie.

Select the Desired AC Input
Voltage ange.
CAUTION: Always use a small
slotted screwdriver,
a ballpoint
pe?,. or equivalent to change the
---
voltage range. Never use a
----- ----- ---------------
pencil. Lead particles can
disturb the operation of the
...........................
terminal.

Install any ptions if Needed.
(Refer to
t e Installation Guide
ith the option.)
Plug the Line Cord into the
Terminal and into the Wall
Receptacle.
1. Plug the line cord into
the terminal.
2. Plug the line cord into a
nonswitched
, three-prong ,
grounded wall receptacle.

Connect the Interface Cable to the
Interface Connector.
NOTE: Site plans are not supplied
bv
DIGITAL. Interface loqic
-L-----------------------L--
connections must be specified and
provided by the system supplier or
the customer because each
.........................
installation mav be different.

Install the Ribbo
CAUTION: Only ribbon cartridges
recommendedby~IGI~X(DE?ji7@
--- ---- ---- --------
LA10R) or equivalent should be
used
~Xt-h<~TTiTZi-wL.iFe~r-13BT
------
Other ribbon cartridges may35'age
the printhead and void the
--------- ----------------
warranty. ~e?ferto the Accessories
and Supplies chapter in the
...........................
Operator Guide for orderin2
..........................
information,
NOTE: DECwriter IV ribbon
--------------- ---------
cartridges (DEC P~N LA34R) can
------------
also be used wXii-t%e-letterwriter
1. Lift the access cover.
2. Move the pr inthead
adjustment lever to about
the middle of its range.

3. Tighten the ribbon by
turning the ribbon adjust
knob clockwise.

4. Line up the snap buttons
on the new ribbon
cartridge with the
mounting holes in the
carriage assembly.