Tandy DMP-105 Installation manual

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Dot Matrix Printer
DMP-105
Operation Manual
Catalog Number 26-1276

Contents
Introduction 1
I/Description of the DMF105 3
2/Setting Up the DMF105 7
Paper Separator Installation ,7
Tractor Installation and Removal 7
Paper Loading 9
Ribbon Installation Replacement 12
Setting Print Function Switches 4DIP Switches) 14
Connecting the DMP-105 to aPower Source 14
Carriage Movement Test 15
Self-Test „is
Connecting the DMP-105 to aComputer ,.16
rower-u psequence ..................,.„,.,,.„,,„,„,,,„,.,,, 16
3/Using the DMP-105 (General Printer
Operation) n
Control Codes 17
Sending Control Codes from BASIC IS
Character Printing Mode ,18
Graphics Mode 18
Selecting aPrint Mode 19
4/Print Font Styles and Character Widths .21
Selecting Font Styles 21
Standard Character Font Style 22
Graphics Characters •„„„„ ,..... 22
Wrap-Around «23
Elongated Characters ........... 23
Bold Characters 24
Mixing Bold and Elongated 24
5/General Control Codes is
Line Feed Codes (LF> 25
Special Line Feed Codes 25
Carriage Return (CR) 16
Ignored or Undefined Codes 26
DMP-105 Buffer Operation 27
6/Charaeter Printing Mode m
Repeat Printing 29
Underline Printing 29
Print Head Positioning 30
Printing Directions 32

7/Graphics Mode 33
Printing Graphics Patterns 34
Line Feed 36
Repeat Function 36
rniit tLrCHSJij ^m.^...^..*,... ........i....ir....niMu ji
Leaving Graphics Mode 37
Mixing Modes on the Same Line 37
Freehand Drawing ,,37
Appendix A/Control Code Summary 39
Appendix B/Interface 41
Parallel Interface 41
Serial Interface ............ „,„„„,.,., 44
Appendix C/Charaeter Sets 47
94 ASCII Code 47
32 European Symbol Code ,43
30 Block Graphic Code ..,....,. 49
Appendix D/Programming Information ...... si
Appendix E/Care and Maintenance &
Printing Limits (Duty Cycle) 55
Appendix F/Schematic Diagram 57
Appendix G/Specifications m

Introduction
Congratulation* for selecting this Tandy compute- product! The DMP-105 is a
dot-matrix printer which can perform avariety of different printing operations.
For instance, it can print:
•Normal r.harjitrrrrs (Nfirmal, (^nndrnsrrl and Compressed)
•Graphics characters.
The DMP-105 operate.? in turn modest
•Character Priming Mode for output of program listings, report writing, or the
creation of any text documentation,
•Graphics Mode for drawing pictures, figures. Or graphs.
In the rtwivteT Printing Mode, the nMP-ICfi prints monospaced. &7 dot-
matrix characters.
In Graphics Mode, you can use graphic data to draw just about any type of
graphic configuration you desire.
You can use two types: of paper with the DMP-105:
•Standard (4*—9,3* wide) computer fan fold forms with guide holes. The
Printer can aiso print one original p(ut one carbon copy.
•Standard (4* —9-5 *> single-sheet typewriter paper.
nrhw .«ifiwflr(»-(v>nTrrtllert fiwriirc-t, Include:
Bidirectional minimum-distance access carriage motion.
»Full, half, 3wl J/4 Forward Line Feed.
•Underline, capability.
and much more?

1/Description of the DMP-105
Carefully unpack the DMP-105, being sure to locate ihe Ribbon Cassette and [he Paper Separator.
Keep lite empty box and packing material just in ease you ever need to transport the Printer.
Be sure t& remove the Yellow Band from the Carriage -
Figure f. Removing the Yellow Band
It's important iu L"ttouic familiar with lIk: DMP-IQ3 nefnre yon <&t [1 up and
bejPTi j^ing ii.

Figure 2. DMP-10S (Top View)
(T) Power ON/OFF Switch, Press [he side of the switch marked fto turn ihe
power ON, Press the switch the other way 10 turn the power OFF, Note that
turning the power OFF and ON during operas ion may cause loss of the
current program,
©POWER ON Indicator. This indicator will illuminate when the DMP-105 is
properly connected and the Power ON/OFF Switch is set to ON.
(J) ON-LINE/OFF-LINE Switch. When this switch is pressed in, the Printer is
placed ON-LINE, When it is pressed again and released, the Printer is
placed off-line.
(3) Platen Pressure Lever. This. lever has two positions. One is Release. Tor the
tractor feed feature (toward the front of the Printer); the other is Friction,
fpr the friction feed Feature (toward the rear of the Printer),

©Paper Bail. For optimum print quality, keep the Bail down on the paper.
(6) Tractor Feed. This Tractor Feed is removable. Sec Selling Up the DMP-105
tor details or using the Tractor Feed. You can remove the Tractor when
priming on single-shed paper.
@Tractor Cam. When the Cam is moved toward the rear or the Printer, the
TrftCtOr can slide from side to aide, and when moved toward the front, it is
locked into position.
(§) Paper Feed Knob. Turn this knob to manually advance the paper,
(f) Paper 1risen iun Opening. Be sure the paper eniers (he DMP-105 hert.
®Platen.
@Top Cover.
@Transparent Cover, This Cover may be opened while handling ihe Paper
Bail.
@Hole Cover. Pui this Cover in place when the Tractor is removed.
@Paper Separator.
Model II users: If aBASiC program srnps txmifion because of aPrinter error,
typing- CONTCiEEB) will cause printing [0 resume, However the entire con-
tents of the print buffer will be printed, scar ting with the current Print Head po-
sition.
Figure 3. DMP-105 (Rear View)
Power Cord. Plug the power cord into awall outlet or approved power
strip,
®Parallel Interface Connector. If your computer has parallel interface
capabilities, connect the cable here. 3« Selling L*|t lire DMP-1(Mi for the
right cable for your computer.
(3) Serial Interface Connector, If you have aColor Computer, tujuiect the ca-
ble to the serial interface connector indicated. See Setting Up (he DMP-105
for the right cable for your Color Computer
.
@> Priit Function (DIP) Switches. The settings of these Switches wilt determine
exactly how your Printer prints in any situation. Such parameters ubaud
rate (6G0 or 24U0 baud) or whether you're using the serial or parallel inter-
face must be set via these Switches.