Star Micronics Star DP8340 User manual

DOT MATRIX PRINTER
DP8340 SERIES
[SERIAL INTERFACE]
USERS MANUAL

Federal Communications Commission
Radio Frequency Interference
Statement
ThisequipmenthasbeentestedandfoundtocomplywiththelimitsforaClassAdigitaldevice,
pursuanttoPart15oftheFCCRules.Theselimitsaredesignedtoprovidereasonableprotection
against harmful interference when the equipment is operated in a commercial environment.
Thisequipment generates,uses andcan radiateradio frequencyenergy and,if notinstalled and
used in accordance with the instruction manual, may cause harmful interference to radio
communications. Operation of this equipment in a residential area is likely to cause harmful
interferenceinwhichcasetheuserwillberequiredtocorecttheinterferenceathisownexpense.
For compliance with the Federal Noise Interference Standard, this equipment requires a
shielded cable.
This statement will be applied only for the printers marketed in U.S.A.
Statement of
The Canadian Department of Communications
Radio Interference Regulations
Thisdigital apparatus doesnot exceed theClass A limitsfor radio noiseemissions from digital
apparatus set out in the Radio Interference Regulations of the Canadian Department of
Communications.
Le présent appareil numérique n’émet pas de bruits radioélectiques dépassant les limites
applicables aux appareils numériques de la classe A prescrites dans le Règlement sur le
brouillage radioélectrique édicté par le ministère des Communications du Canada.
The above statement applies only to printers marketed in Canada.
CE
Manufacturer’s Declaration of Conformity
EC Council Directive 89/336/EEC of 3 May 1989
Thisproduct, has beendesigned and manufacturedin accordance withthe International StandardsEN 50081-1/01.92 and
EN 50082-1/01.92, following the provisions of the Electro Magnetic Compatibility Directive of the European Commu-
nities as of May 1989.
EC Council Directive 73/23/EEC and 93/68/EEC of 22 July 1993
This product, has been designed and manufactured in accordance with the International Standards EN 60950, following
the provisions of the Low Voltage Directive of the European Communities as of July 1993.
The above statement applies only to printers marketed in EU.
Trademark acknowledgments
DP8340: Star Micronics Co. Ltd.
Notice
• All rights reserved. Reproduction of any part of this manual in any form whatsoever, without STAR’s express
permission, is strictly forbidden.
• The contents of this manual are subject to change without notice.
• All efforts have been made to ensure the accuracy of the contents of this manual at the time of printing. However,
should any errors be found, STAR would greatly appreciate being informed of them.
• The above notwithstanding, STAR can assume no responsibility for any errors in this manual.
© Copyright 1986, 1999 Star Micronics Co., Ltd.

TABLE OF CONTENTS
1. OUTLINE..............................................................................................1
2. UNPACKING AND INSTALLATION................................................2
2-1. Unpacking ....................................................................................2
2-2. Installation of Paper Holders and Re-Roll Prevention Guard
(Only Model DP8340F) ...............................................................3
2-3. Handling Notes.............................................................................4
3. PART IDENTIFICATION AND NOMENCLATURE ........................5
3-1. Power Supply Unit .......................................................................5
3-2. Printer...........................................................................................6
3-3. Part Functional Description..........................................................7
4. INSTALLATION OF INK RIBBON AND PAPER.............................8
4-1. Installation of Ink Ribbon ............................................................8
4-2. Removal of Ink Ribbon................................................................9
4-3. Paper Insertion ...........................................................................10
4-3-1. Model DP8340F ..............................................................10
4-3-2. Model DP8340S ..............................................................11
4-4. Paper Removal ...........................................................................12
5. CONTROL CODES ............................................................................13
6. GENERAL SPECIFICATIONS..........................................................19
7. INTERFACE FOR MODEL DP8340-M
(MODULAR JACK CONNECTOR)..................................................22
7-1. Interface Specifications ..............................................................22
7-2. Interface Circuit .........................................................................22
7-3. Setting of the DIP Switches .......................................................23
7-3-1. DIP-SW 1 ........................................................................23
7-3-2. DIP-SW2 .........................................................................23
7-4. Connectors and Signals ..............................................................24
7-5. Interface Connections.................................................................25
7-6. Peripheral Unit Drive Circuit .....................................................26
7-6-1. Cable Connection ............................................................26
7-6-2. Peripheral Drive Circuit ..................................................27
7-6-3. Control Codes..................................................................27

8. INTERFACE FOR MODEL DP8340-D
(D-SUB 25 PIN CONNECTOR).........................................................28
8-1. Interface Specifications..............................................................28
8-2. Interface Circuit .........................................................................29
8-2-1. RS-232C ..........................................................................29
8-2-2. Current Loop ...................................................................29
8-3. Setting of the DIP Switches .......................................................30
8-3-1. DIP-SW 1 ........................................................................30
8-3-2. DIP-SW 2 ........................................................................30
8-4. Jumper Setting............................................................................31
8-4-1. Removal of the Bottom Cover ........................................31
8-4-2. Setting of Jumper ............................................................31
8-5. Connectors and Signals ..............................................................32
8-6. Interface Connections.................................................................33
8-7. Peripheral Unit Drive Circuit .....................................................34
8-7-1. Cable Connection ............................................................34
8-7-2. Peripheral Drive Circuit ..................................................35
8-7-3. Control Codes..................................................................35
9. DATA STRUCTURE AND CONTROL ............................................36
9-1. DTR Mode (1 BLOCK) .............................................................36
9-2. X-ON/X-OFF Mode...................................................................37
9-3. STX-ETX Mode.........................................................................39
10. CHARACTER CODE LIST..............................................................41
11. FONT LIST .......................................................................................44
12. WHEN POWER IS SUPPLIED BY THE USER .............................48
13. FERRITE CORE INSTALLATION (EU ONLY) ............................50

– 1 –
1.OUTLINE
TheDP8340seriesofserialdotmatrixprintersisforuseinECR,POS,electronic
instruments, banking machines and computer peripheral equipment.
The DP8340 series include the following features;
1) 2 color printing (Red and Black)
2) High-speed bidirectional printing (2 line/sec, 40 columns per line)
3) 9-pin print head
4) The interface conforms to RS-232C in M type, and to RS-232C/20mA
Current Loop in D type.
5) Commandsforexpandedcharacters,invertedcharacters,emphasizedchar-
acters, and red and black printing are provided, which makes the printer
very versatile.
6) Simultaneous Data Communication and Printing
7) Error Checking Protocol
8) Peripheral Driver
9) Reverse Channel providing status and full control
Model Name Notation

– 2 –
2.UNPACKINGANDINSTALLATION
2-1. Unpacking
After opening the box, check if all necessary accessories are included.
(A) Printer
(B) Power Supply Unit
Figure 2-1. Unpacking
1Printer
2User’s Manual
3Paper Holders
4Re-Roll Prevention Guard
5Ink Ribbon
6DIP Switch Cover
7Ferrite Core (EU only)
1
1Power Supply Unit
2User’s Manual

– 3 –
2-2. Installation of Paper Holders and Re-Roll Prevention
Guard (Only Model DP8340F)
Install the Paper Holders in the outermost holes in the rear of the printer.
Figure 2-2. Installation of Paper Holders

– 4 –
InstalltheRe-Roll PreventionWirein theholesoftheprinter cover.Twistingthe
Wire as shown in the figure below, will make the installation easier.
Figure 2-3. Installation of Re-Roll Prevention
2-3. Handling Notes
(1) Install the printer near an easily accessible socket-outlet.
(2) Place the unit on a flat and stable surface for operation.
(3) Do not connect the AC Power Plug to the same outlet used for other noise
generating devices (large motors, etc.).
(4) Be careful not to drop paper clips, pins and other foreign objects into the
unit.
(5) Wipe off dirt with a soft cloth soaked in alcohol or benzine. Do not use
Lacquer thinner, Trichlorethelene or Ketone solvents because they may
damage plastic parts.
(6) Use a soft brush, etc. for cleaning the printer mechanism and PCB.
(7) Keep hands out of printer while power is on.
(8) Do not attempt to print when there is no ink ribbon or paper in the unit. The
print head life could be severly reduced.
(9) Ifthepaper is fastened tightly to the roll, the paper may notdetachfromthe
roll when the end is reached.
If this happens, the no paper detection function and paper feed will not
operate.
(10) Always keep the printer cover attached when printing to prevent paper
jams, noise, and other problems.
(11) Always turn the power off before opening the printer cover. (e.g. When
renewing a ink ribbon)

– 5 –
3.PARTIDENTIFICATIONANDNOMENCLATURE
3-1. Power Supply Unit
Figure 3-1. Power Supply Unit
DC Power Connector (Output)
Shape of AC Power plug will
vary according to destinations.

– 6 –
3-2. Printer
Figure 3-2. Printer: Front View
Figure 3-3. Printer: Rear View

– 7 –
3-3. Part Functional Description
(1) AC Power Plug Connect to an outlet of the specified voltage.
(2) DC Power Outlet Supplies DC 12V power to the printer.
(3) Printer Cover Protects the printer against dust and reduces noise.
(4) POWER Lamp Lights up (green LED) when power is on.
(5) ON LINE Lamp Lights up (green LED) when the unit is in the online
mode.
(6) ALARM Lamp Lights up (red LED) when printer operation is not
normal, or the printer is out of paper. It is necessary
to install paper into the printer and press the ON
LINE Button to recover from paper empty status.
Turn off the printer power in order to recover from
abnormal operation.
(7) ON LINE Button Togglesbetweentheon-lineandoff-linemodes.The
printer will go on-line after turning power on.
(8) FEED Button Momentary operation of this button provides one
line feed. Pressing this button continuously will
cause continuous paper feed. If power is turned on
while pressing this button, self printing*1 will be
performed.
(9) Interface Connector Connects the printer to host computers. Check that
both computer and printer are off before connecting.
(10) DIP Switches Allows for setting of various functions according to
user requirements.
*1 Self Printing This printer has another convenient function, the
Automatic Test Printing. With the ink ribbon and
paperproperlyinstalledinthe printer,turnthepower
ON while holding down the Feed switch. Test print-
ing will start and stop again automatically.

– 8 –
4.INSTALLATIONOFINKRIBBONANDPAPER
4-1. Installation of Ink Ribbon
(1) Turn power off, lift the Printer Cover up and remove it.
Note: Be careful not to touch the print head immediately after printing,
because it can get very hot.
Figure 4-1. Printer Cover Removal
(2) Unwind ribbon so that the spools are separated as shown in Figure 4-3.
Holdthe ribbon taut as shown with the drivepinsfacing down and slide the
ribbonbetweentheprintheadandtheplaten.Whilekeepingtheribbontaut,
wrap one side around the black ribbon guide on the end of the platen and
droponespoolonthespoolshaft.Asyoumovethespooldownwards,move
thedetectingleverasidetoallow thespooltodropintoplace.Makesurethe
spool drive pins engage with the spool drive holes. As the spool drops into
place there will be a click.
(3) Whilecontinuing to holdthe ribbon taut,install the remainingribbon spool
in a similar fashion.
(4) Turn the spool that rotates freely to take up the ribbon slack.
Ribbon Life
Description Ribbon life
Black Red
SF-03BR Approx. Approx.
(Fuji Kagakushi 0.8 million 0.4 million
Kogyo Co., Ltd.) characters characters

– 9 –
Figure 4-2. Installation of Ink Ribbon
Figure 4-3. Ribbon Spools
4-2. Removal of Ink Ribbon
Hold the spool and lift gently, rotating it until the ribbon sags. Push the ribbon
detecting lever out, lift the spool until it comes off the shaft. Remove the second
spool in a similar manner.
(Do not apply excessive force when lifting spools.)

– 10 –
4-3. Paper Insertion
4-3-1. Model DP8340F
(1) Cut the Roll Paper end straight and square. Hold the roll so that the paper
comes from the bottom.
(2) Attach the Roll Paper to the Holders Paper by slipping one side of the roll
onto the Hub and pulling the other Hub out to allow the roll to slip in place.
(3) Insert the paper evenly into the Paper Insertion Slot.
(4) Turn the Power Switch “ON”, and press the FEED Button. The paper will
be fed into the unit.
Figure 4-4. Paper Insertion (1) [Model DP8340F]
Figure 4-5. Paper Insertion (2) [Model DP8340F]

– 11 –
4-3-2. Model DP8340S
1. Makea straightcutalong thetop of thepaper, about 1/4inch away fromthe
sprocketholes,(asshowninthe figure).Ifthereisperforation,cutthepaper
on the perforation.
2. InsertthepapersquarelyintothepaperinsertionslotuntiltheALARMlamp
goes out. Then, hold down the FEED switch to advance the paper 8 lines,
and release the switch when 8-line feeding is completed.
Ifthepaperisnotfedstraightduring8-linefeeding,straightenthepaperby
pullingitbackslowlyasyouholdthepaperreleaseleverdown.Ifasprocket
hole is torn or enlarged, recut the paper and reinsert it as before.
3. After confirming that the paper has been fed in straight, feed the paper
continuously by holding the feed switch down.
4. Release the feed switch when the paper emerges through the paper outlet.
Figure 4-6. Paper Insertion (1) [Model DP8340S]
Figure 4-7. Paper Insertion (2) [Model DP8340S]

– 12 –
4-4. Paper Removal
Cut the paper close to the slot and use the feed button until paper has passed
completely through the printer.
Note: Do not try to remove the paper by hand as it could become crooked and
get jammed inside the printer.

– 13 –
5.CONTROLCODES
CODE
LF
(0A)H
FUNCTION
Print and line feed instruction
OUTLINE
The LF code causes the data in the line buffer to be printed,
followedby asingle line feed.When theline buffer isempty,
only the feed takes place.
CODE
CR
(0D)H
FUNCTION
Print and line feed instruction
OUTLINE
Same function as of LF code.
However, when the DIP switch 2-4 is ON, the CR code
becomes invalid.
CODE
SO
(0E)H
FUNCTION
Expanded character instruction
OUTLINE
This code causes the printer to print expanded characters
twiceaswide as the regular ones. This remains in effect until
a DC4 code is received.
CODE
DC4
(14)H
FUNCTION
Release from expanded characters
OUTLINE
The expanded character instruction is released by the DC4
code, and the succeeding data is printed as regular width
characters.
CODE
ESC-1
(1B)H(2D)H(01)Hor (1B)H(2D)H(31)H
FUNCTION
Underline mode selection
OUTLINE
All data received after this code is underlined until a ESC-0
is received.
CODE
ESC-0
(1B)H(2D)H(00)Hor (1B)H(2D)H(30)H
FUNCTION
Release from underline mode
OUTLINE
The underline mode selection is released by this code.

– 14 –
CODE
SI
(0F)H
FUNCTION
Inverted print instruction
OUTLINE
This function causes the printing to be inverted. This code
must be received at the beginning of a line. If this code is
received anywhere other than at the beginning of a line, it is
disregarded. Accordingly, normal characters and inverted
characters, can not be mixed on the same line.
CODE
DC2
(12)H
FUNCTION
Release from inverted print instruction
OUTLINE
The inverted print instruction is released by this code. This
code must be received at the beginning of a line.
CODE
ESC E
(1B)H(45)H
FUNCTION
Emphasized print mode instruction
OUTLINE
Data following this command is printed with emphasized
characters.
In this mode, characters are printed in a single direction.
CODE
ESC F
(1B)H(46)H
FUNCTION
Release from emphasized print instruction
OUTLINE
Emphasized print is released.
CODE
ESC 4
(1B)H(34)H
FUNCTION
Red character print instruction
OUTLINE
This command causes subsequent data to be printed with red
characters.
The instruction is released by the code, ESC 5.
Red and black characters may be intermixed.
CODE
ESC 5
(1B)H(35)H
FUNCTION
Release from red character print instruction
OUTLINE
The red character print instruction is released by this code.

– 15 –
CODE
ESC a n
(1B)H(61)Hn
FUNCTION
n-line feed
OUTLINE
Afterprintingthedatainthecurrentline,nlinesarefedbythis
code. The value of n ranges from 1 to 120.
CODE
ESC C n
(1B)H(43)Hn
FUNCTION
Sets page length in lines
OUTLINE
This code sets the length of a page to n lines. The value of n
ranges from 1 to 120. On initialization, the page length
default condition will be 42 lines. The line feed pitch is one-
sixth inch.
CODE
ESC Nn
(1B)H(4E)Hn
FUNCTION
Sets bottom margin in lines
OUTLINE
Upon receiving this code, the bottom margin is set to n lines.
0 n 120; Default Value n = 0
CODE
ESC O
(1B)H(4F)H
FUNCTION
Cancels bottom margin.
OUTLINE
Upon input of this code, bottom margin setting is cleared.
CODE
FF
(0C)H
FUNCTION
Form feed
OUTLINE
The FF code prints the data in the current line and transports
the paper to the start of the next page.

– 16 –
CODE
ESC @
(1B)H(40)H
FUNCTION
Printer initialization
OUTLINE
Allprintingconditionsexcept ESCBELn1n2,thelinebuffer
and data buffer are set to the power on default condition.
CODE
ESC BEL n1n2
(1B)H(07)Hn1n2
FUNCTION
Sets peripheral unit drive pulse duration.
OUTLINE
This command sets the pulse duration for peripheral unit
drive (Paper Cutter, Take-Up Device, cash drawer, etc.)
Pulse Duration = 10 ×n1(ms)
Delay = 10 ×n2(ms)
1 n1127; 1 n2127
Default value: n1= n2= 20
Executed by BEL code and FS code after printing.
CODE
BEL
(07)H
FUNCTION
Trigger peripheral unit drive (Deferred)
OUTLINE
Causes a peripheral drive pulse to be generated. This code is
normallystoredinthebufferandisperformedasitisreceived
from the data queue.