Star DP8340 SERIES User Manual

DOT MATRIX PRINTER

DP8340 SERIES

[SERIAL INTERFACE]

USERS MANUAL

Federal Communications Commission

Radio Frequency Interference

Statement

This equipment has been tested and found to comply with the limits for a Class A digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection
against harmful interference when the equipment is operated in a commercial environment.
This equipment generates, uses and can radiate radio frequency energy and, if not installed 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
interference in which case the user will be required to corect the interference at his own expense.

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

This digital apparatus does not exceed the Class A limits for radio noise emissions 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

This product, has been designed and manufactured in accordance with the International Standards EN 50081-1/01.92 and
EN 50082-1/01.92, following the provisions of the Electro Magnetic Compatibility Directive of the European Commu­nities 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

The DP8340 series of serial dot matrix printers is for use in ECR, 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) Commands for expanded characters, inverted characters, emphasized char-

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. UNPACKING AND INSTALLATION

2-1. Unpacking

After opening the box, check if all necessary accessories are included.

(A) Printer

(B) Power Supply Unit

Figure 2-1. Unpacking

1 Printer
2 User’s Manual
3 Paper Holders
4 Re-Roll Prevention Guard

5 Ink Ribbon
6 DIP Switch Cover
7 Ferrite Core (EU only)

1

1 Power Supply Unit
2 User’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 –

Install the Re-Roll Prevention Wire in the holes of the printer cover. Twisting the
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) If the paper is fastened tightly to the roll, the paper may not detach from the

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. PART IDENTIFICATION AND NOMENCLATURE

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 Toggles between the on-line and off-line modes. 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
paper properly installed in the printer, turn the power
ON while holding down the Feed switch. Test print­ing will start and stop again automatically.

– 8 –

4. INSTALLATION OF INK RIBBON AND PAPER

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.

Hold the ribbon taut as shown with the drive pins facing down and slide the

ribbon between the print head and the platen. While keeping the ribbon taut,

wrap one side around the black ribbon guide on the end of the platen and

drop one spool on the spool shaft. As you move the spool downwards, move

the detecting lever aside to allow the spool to drop into place. Make sure the

spool drive pins engage with the spool drive holes. As the spool drops into

place there will be a click.
(3) While continuing to hold the ribbon taut, install the remaining ribbon 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. Make a straight cut along the top of the paper, about 1/4 inch away from the

sprocket holes, (as shown in the figure). If there is perforation, cut the paper

on the perforation.

2. Insert the paper squarely into the paper insertion slot until the ALARM lamp

goes out. Then, hold down the FEED switch to advance the paper 8 lines,

and release the switch when 8-line feeding is completed.

If the paper is not fed straight during 8-line feeding, straighten the paper by

pulling it back slowly as you hold the paper release lever down. If a sprocket

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. CONTROL CODES

CODE

LF
(0A)

H

FUNCTION

Print and line feed instruction

OUTLINE

The LF code causes the data in the line buffer to be printed,
followed by a single line feed. When the line buffer is empty,
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
twice as wide 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)H or (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)H or (1B)H (2D)H (30)H

FUNCTION

Release from underline mode

OUTLINE

The underline mode selection is released by this code.