User's Manual
SRP-270
Impact Printer
Rev. 1.00
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SRP-270
CAUTION
Violating following instructions can cause slight wound or damage the appliance.
If you observe a strange smoke, odor or noise from
Keep the desiccant out of children’s reach.
the printer, unplug it before taking following
measures.
• If not, they may eat it.
• Switch off the printer and unplug the set from the mains.
• After the disappearance of the smoke, call your dealer to
repair it.
TO UNPLUG
PRINTER
PROHIBITED
Install the printer on the stable surface.
Use only approved accessories and do not try to
disassemble, repair or remodel it for yourself.
• If the printer falls down, it can be broken and you can hurt
yourself.
• Call your dealer when you need these services.
• Do not touch the blade of auto cutter.
PRINTER
DISASSEMBLING
PROHIBITED
PROHIBITED
PRINTER
Do not let water or other foreign objects in the
printer.
Do not use the printer when it is out of order. This
can cause a fire or an electrocution.
• If this happened, switch off and unplug the printer before
• Switch off and unplug the printer before calling your dealer.
calling your dealer.
PROHIBITED
PRINTER
TO UNPLUG
PRINTER
DEALER
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SRP-270
■ Warning - U.S.A
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 according to 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
correct the interference at his own expense.
■ Notice - Canada
This Apparatus complies with class “A” limits for radio interference as specified in the
Canadian department of communications radio interference regulations.
Get appareil est conforme aux normes class “A” d’interference radio tel que specifier par
ministre canadien des communications dans les reglements d’interference radio.
■ Caution
Some semiconductor devices are easily damaged by static electricity. You should turn the
printer “OFF”, before you connect or disconnect cables. This will help protect the printer
against static electricity. If the printer is damaged by the static electricity, you should turn
the printer OFF, and refer to your local service provider.
■ Waste Electrical and Electric Equipment (WEEE)
This marking shown on the product or its literature, indicates that is should not
be disposed with other household wastes at the end of its working life, To
prevent possible harm to the environment or human health from uncontrolled
waste disposal, please separate this from other types of wastes and recycle it
responsibly to promote the sustainable reuse of material resources. Household
users should contact either the retailer where they purchased this product, or
their local government office, for details of where and how they can take this item for
environmentally safe recycling. Business users should contact their supplier and check the
terms and conditions of the purchase contract. This product should not be mixed with other
commercial wastes for disposal.
■ Label Material
* Control Label: PC
* Other Labels: PET
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SRP-270
■ Introduction
The SRP-270 Roll Printers are designed for use with electronic instruments such as
system ECR, POS, banking equipment, computer peripheral equipment, etc.
The main features of the printer are as follows:
1. High speed printing : 4.6 lines per seconds.
2. 2 color dot-matrix printer.
3. RS-232C(SRP-270), RS-485 serial interface (SRP-270S),
Parallel interface (SRP-270P),USB interface(SRP-270U).
4. The data buffer allows the unit to receive print data even during printing.
5. Peripheral units drive circuit enables control of external devices such as cash drawer.
Please be sure to read the instruction in this manual carefully before using your new
SRP-270 series.
※ NOTE
The power-outlet should be near the equipment and it should be easy accessible.
※ All specifications are subjected to change without notice.
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SRP-270
■ Table of Contents
1. Setting Up the Printer................................................................................................... 7
1-2 Installing the Printer................................................................................................... 7
1-3 Functions................................................................................................................... 8
2-2 Connecting Interface Cable and Drawer Cable to the printer .................................. 10
2-2-2 Serial Interface (RS-485)............................................................................. 12
3. Setting the Dip Switches............................................................................................ 15
6. Removing Jammed Paper.......................................................................................... 23
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SRP-270
1. Setting Up the Printer
1-1 Unpacking
After unpacking the unit, check that all the necessary accessories are included in the
package.
Manual
CD
1-2 Installing the Printer
1-2-1 Avoid locations in direct sunlight or subject to excessive heat.
1-2-2 Avoid using or storing the printer in places subject to excessive moisture.
1-2-3 Do not use or store the printer in a dusty or dirty area. Avoid places subject to
intense vibration or shock.
1-2-4 Choose a stable and flat place for proper use of the printer.
1-2-5 Make sure that there is enough space around the printer so that it can be used easily.
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1-3 Functions
O The power switch is used to turn the printer on and off.
O The FEED button is used to feed roll paper.
O The POWER light (green) is on when the printer is turned on and is off when the printer
is turned off.
O The ERROR light (red) is on when the printer is in error state.
O The Paper Out light(red) is on when the printer is in paper end.
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SRP-270
2. Connecting the cables
2-1 Connecting the AC adapter to the printer
2-1-1 Make sure that the printer is turned off.
2-1-2 CHECK the label on the AC adapter to make sure the voltage required by the
AC adapter matches that of your electrical outlet.
2-1-3 Plug the DC cord connector into the printer’s power connector.
2-1-4 Plug the AC adapter power cord into the wall outlet.
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SRP-270
2-2 Connecting Interface Cable and Drawer Cable to the printer
Connect the Host Computer(POS/ECR) to the printer using an interface cable that
matches the specifications of the printer and the Host computer(POS/ECR). Be sure to
use a drawer that matches the printer's specification.
- Turn off both the printer and the Host computer(POS/ECR).
- Plug the serial interface cable connector into the printer’s interface connector,
then tighten the screws on both sides of the connector. In case of the parallel
interface, squeeze the wire clips on the printer together until they lock in place on
both sides of the connector.
- Plug the drawer cable into the drawer kick-out connector on the back of the
printer next to the interface connector. Do not connect a telephone line to the
drawer kick-out connector; otherwise the printer and the telephone line may be
damaged.
- Turn on the Printer and Host computer(POS/ECR).
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SRP-270
2-2-1 Serial Interface (RS-232C)
ON
RS-232
Ver.2
Interface Connector
Drawer kick-out
connector
Power supply
connector
※ When the Dip Switch is “ON” on the Serial Interface Board,
DTR and RTS are connected each other.
Printer Side
Host Side
Printer Side
Host Side
(25Р)
(9Р)
(25Р)
(25Р)
(Shield.G)
(Shield.G)
(Shield.G)
(Shield.G)
(S.GND)
(S.GND)
(S.GND)
(S.GND)
Pin No.
Signal name
FG
Direction
Function
Frame Ground
Transmit Data
1
2
3
4
5
-
TxD
RxD
RTS
CTS
DSR
SG
Output
Input
Output
Input
Input
-
Receive Data
Ready To Send
Clear To Send
Data Set Ready
Signal Ground
6
7
20
DTR
Output
Data Terminal Ready
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SRP-270
2-2-2 Serial Interface (RS-485)
ON
RS-232
Ver.2
Interface Connector
Drawer kick-out
connector
Power supply
connector
※ When the Dip Switch is “ON” on the Serial Interface Board,
DTR and RTS are connected each other.
Host Side
Printer Side
Pin No.
Signal Name
FGND
SD2
Direction
-
Function
Frame Ground
1
2
3
4
5
7
8
9
10
11
Output
Output
Input
Input
-
Send Data
SD1
RD2
RD1
SGND
DR2
DR1
CS2
CS1
Receive Data
Signal Ground
Output
Input
Same as DTR(RS-232)
Same as DSR(RS-232)
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SRP-270
2-2-3 Parallel Interface (IEEE1284)
PARALLEL
Ver.2
Interface Connector
Drawer kick-out
connector
Power supply
connector
Compatibility
Pin No.
Source
Nibble Mode
Byte Mode
Mode
nStrobe
Data 0 (LSB)
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7 (MSB)
nAck
1
2
3
4
5
6
7
8
9
Host
Host / Printer
Host / Printer
Host / Printer
Host / Printer
Host / Printer
Host / Printer
Host / Printer
Host / Printer
Printer
HostClk
HostClk
Data 0 (LSB)
Data 1
Data 2
Data 3
Data 4
Data 5
Data 6
Data 7 (MSB)
PtrClk
PtrBusy
AckDataReq
Xflag
HostBusy
NC
-
-
-
-
-
-
-
-
10
11
12
13
14
15
16
17
18
19~30
31
32
33
34
35
36
PtrClk
PtrBusy /Data3,7
AckDataReq/Data2,6
Printer
Printer
Printer
Host
Busy
Perror
Select
nAutoFd
NC
GND
FG
Logic-H
GND
nInit
nFault
Xflag/Data1,5
HostBusy
-
-
-
NC
GND
FG
Logic-H
GND
FG
Logic-H
GND
nInit
Printer
-
GND
nInit
nDataAvail/Data0,4
Host
Printer
nDataAvail
ND
ND
ND
1284-Active
-
GND
DK_Status
+5V
ND
ND
ND
Printer
Printer
Host
nSelectIn
1284-Active
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SRP-270
2-2-4 USB Interface
Ver.2
USB
USB Connector
Drawer kick-out
connector
Power supply
connector
Pin No.
Shell
Signal Name
Shield
VBUS
D-
Assignment (Color)
Function
Frame Ground
Host Power
Data Line(D-)
Data Line(D+)
Signal Ground
Drain Wire
Red
1
2
3
4
White
Green
Black
D+
GND
2-2-5 Drawer Connector
Pin No.
1
Signal name
Frame ground
Direction
-
Output
Input
-
Output
-
2
3
4
5
6
Drawer kick-out drive signal 1
Drawer open/close signal
+24V
Drawer kick-out drive signal 2
Signal ground
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SRP-270
3. Setting the Dip Switches
The DIP switches are located on the bottom of the printer. The DIP switches are used to
set the printer to perform various functions. Follow these steps when changing DIP switch
settings.
- Turn the printer power switch off.
- Turn the printer over and remove the dip switch cover.
- Move the DIP switches using tweezers or another narrow-ended tool. Switches
are on when up and off when down in the figure below.
- The new setting takes effect when you turn on the printer.
※ NOTE
Always change DIP switch settings when the printer is turned off. Changes made with the
power on have no effect until you turn the printer off and then on again.
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SRP-270
3-1 Serial Interface
SW
1
2
3
4
5
6
7
8
FUNCTION
ON
OFF
DEFAULT
OFF
OFF
OFF
OFF
-
Refer to the following
table
Enable
2
Emulation Selection
Auto-Cutter
FONT SPACE
Disable
3
Function for
Service Engineer
-
OFF
OFF
Buffer size
40Bytes
4KBytes
DIP switch Setting 1 Function
SW – 1
OFF
OFF
ON
SW – 2
OFF
ON
OFF
MODE
EPSON
Citizen
Star
Emulation Selection
SW
1
FUNCTION
ON
Always
Enabled
YES
XON/OFF
7 bits
Enable
EVEN
Refer to the following
table
OFF
Always
Disabled
NO
DTR/DSR
8 bits
DEFAULT
OFF
Auto Line Feed
2
3
4
5
6
7
8
Hexadecimal dump
Hand Shaking
Word length
OFF
OFF
OFF
OFF
OFF
OFF
OFF
Parity check
Parity selection
Disable
ODD
Baud Rate selection
DIP switch Setting 2 Function
Transmission speed
19200 BAUD
2400 baud
SW – 7
ON
OFF
SW – 8
ON
ON
4800 baud
9600 baud
ON
OFF
OFF
OFF
Baud Rate selection
※ NOTE
When the word length is 7 bits, you can not parity check OFF status.
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SRP-270
3-2 Parallel / USB Interface
SW
1
2
3
4
5
6
7
8
FUNCTION
ON
OFF
DEFAULT
OFF
OFF
OFF
OFF
-
Refer to the following
table
Enable
2
Emulation Selection
Auto-Cutter
FONT SPACE
Disable
3
Function for
Service Engineer
-
OFF
OFF
Buffer size
40Bytes
4KBytes
DIP switch Setting 1 Function
SW – 1
SW – 2
OFF
ON
OFF
MODE
EPSON
Citizen
Star
OFF
OFF
ON
Emulation Selection
SW
1
FUNCTION
Auto Line Feed
ON
Always
OFF
Always
DEFAULT
OFF
Enabled
Disabled
2
3
4
5
6
7
8
Hex Dump
Reserved
Reserved
Reserved
Reserved
Reserved
Reserved
YES
NO
OFF
OFF
OFF
OFF
OFF
OFF
OFF
-
-
-
-
-
-
-
-
-
-
-
-
DIP switch Setting 2 Function
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SRP-270
4. Ribbon Cassette Installation
4-1 Before inserting the ribbon cassette, turn the knob clockwise to prevent
twisting the ribbon.
4-2 Insert the ribbon cassette as shown below and pay particular attention to the
placement of the ribbon behind the Print Head.
4-3 During inserting the ribbon cassette, turn the knob clockwise again to
make sure the ribbon moves freely in the cassette.
※ NOTE
Malfunctions and other problems may arise if other than specified ribbon cassettes are
used in the printer. The Warranty may be voided if other than specified ribbon cassettes
are used. Contact your dealer or place of purchase for more information about proper
ribbon cassettes.
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SRP-270
5. Roll Paper Installation
Be sure to use roll paper that matches the printer's specifications.
5-1 When possible, make sure that the printer has no un-printed data.
This data may be lost.
5-2 Open the printer cover and remove the used paper roll core if there is one.
- SRP-270 A/C : 1Ply Paper
- SRP-270 D : 2Ply Paper
5-3 To use a new roll paper, unroll the paper and tear off the end of the paper correctly.
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5-4 Put the roll paper on the paper holder and insert the paper in the printer.
- SRP-270 A/C : 1Ply Paper
- SRP-270 D : 2Ply Paper
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5-5 Insert the end of the roll paper straight into the paper inlet. The printer feeds the paper
automatically and then the printer will cut the paper automatically(SRP-270C type
series and SRP-270D type series). Refer to the attached label inside the cover.
5-6 Tear off the paper as shown, if necessary.
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5-7 Insert the end of the roll paper into the groove on the Roller-Pulley, warp the paper
around it two or three times and load the Roller-Pulley onto the groove of the Case.
5-8 Push the auto-cutter cover as shown below and close the printer cover.
※ NOTE
Push upper face of the auto cutter cover for completely locking of it.
5-9 When the ERROR light is on and PAPER OUT light blinks, please press the
FEED button. After that, the printer is ready for printing.
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6. Removing Jammed Paper
6-1 Open the printer cover.
6-2 Raise the auto cutter unit by lifting the knob lock.
6-3 Remove the ribbon cassette.
6-4 Loosen the manual screw.
6-5 Remove the head cover.
※ CAUTION
The printer head becomes very hot during printing. Allow it to be cool before you reach into
the printer.
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6-6 Move the print head carriage to the reverse direction of paper jam.
By pushing on the side of the print head as shown in the illustration.
6-7 Remove the jammed paper by rotating the paper-feed knob.
6-8 Replace the head cover and secure it with screw.
6-9 Replace the ribbon cassette and roll paper, then close the printer cover.
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※ NOTE
If you are troubled with reloading the paper, the cutter blade may not be in its normal
position. Insert a screw driver into the hole at the bottom side of auto cutter unit as shown
followed picture, and turn the gear inside the cutter unit to move the cutter blade to its
normal position.
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SRP-270
7. Self Test
The self-test checks whether the printer has any problems. If the printer does not function
properly, contact your dealer.
7-1 Make sure paper roll has been installed properly.
7-2 Turn on the power while holding down the FEED button. The self-test begins.
7-3 The self-test prints the current printer status, which provides the control ROM version
and the DIP switch setting.
7-4 After printing the current printer status, self-test printing will print the following,
and pause (The PAPER LED light blinks).
Self-test printing.
Please press the FEED button
7-5 Press the FEED button to continue printing. The printer prints a pattern using the built-
in character set.
7-6 The self-test automatically ends after printing the following.
** Character Test Completed **
7-7 The printer is ready to receive data when it completes the self-test.
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8. Hexadecimal Dumping
This feature allows experienced users to see exactly what data is coming to the printer.
This can be useful in finding software problems. When you turn on the hexadecimal dump
function, the printer prints all commands and data in hexadecimal format along with a
guide section to help you find specific commands.
To use the hexadecimal dump function, follow these steps.
8-1 After you make sure that the printer is off.
8-2 Set DIP switch 2-2 On.
8-3 Turn on the printer, then the printer enters the hexadecimal dump mode.
8-4 Run any software program that sends data to the printer. The printer will print
all the codes it receives in a two-column format. The first column contains the
hexadecimal codes and the second column gives the ASCII characters that correspond
to the codes.
1B 21 00 1B 26 02 40 40
02 0D 1B 44 0A 14 1E 28
00 01 0A 41 0D 42 0A 43
. ! . . & . @ @
. . . D . . . . (
. . . A . B . C
- A period(.) is printed for each code that no ASCII equivalent.
- During the hex dump, all commands except DLE EOT and DLE ENQ are
disabled.
- Insufficient print data to fill the last line can be printed by pressing the
FEED button.
8-5 When the printing finishes, turn off the printer, and then change DIP switch 2-2 OFF.
8-6 Turn on the printer and then the hexadecimal mode is off.
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SRP-270
9. Specification
Printer
Printing method
Serial impact dot matrix
9 wires
Bi-directional
Approx. 4.6 LPS
40 (9*7), 33(9*9)
Number of head pin
Printing direction
Lines per second
Characters per line
Ribbon type
Ribbon
Cartridge type (ERC-38 Black/Red)
Black & Red
Color
Ribbon life
Approx.
Black : 1.5 Million characters
Red : 0.75 Million characters
Roll paper
Paper
Paper type
Paper width
Roll diameter
Thickness
W76mm ± 0.5mm (2.99" ± 0.22")
Max. φ80mm (3.14")
0.06mm ~ 0.085mm (0.002" ~ 0.003")
Adapter
Overall dimensions
Weight
120mm * 63mm * 33mm (4.71" * 2.47" * 1.29”)
215gr (0.5 lbs)
Types
Cutter type
AD-270 Free Voltage (50Hz ~ 60Hz)
Guillotine type
Auto
Cutter
Cutting width
Cutting thickness
Data buffer
Max. 85 mm
Max. 0.1mm
4k bytes
ETC
Overall dimension
SRP-270A/AS/AP/AU :
160(W)*249(D)*130(H)mm (6.3"*9.8"*5.12")
SRP-270C/CS/CP/CU :
160(W)*249(D)*149(H)mm (6.3"*9.8"*5.87")
SRP-270D/DS/DP/DU :
160(W)*294(D)*160(H)mm (6.3"*11.57"*6.3")
Weight
Weight (printer only)
Weight (with box & accessories) :
SRP-270A TYPE: 2.2 Kg (4.9 lbs) / 3.2 Kg (7.1 lbs)
SRP-270C TYPE: 2.5 Kg (5.5 lbs) / 3.5 Kg (7.7 lbs)
SRP-270D TYPE: 2.6 Kg (5.7 lbs) / 3.6 Kg (7.9 lbs)
DC 24 V, 1.0 A
Rating
Power consumption
EMI
Standby : 8 W, Operation: 24 W
FCC class A, CE
Safety standards
Reliability
UL/CSA, TUV
Printer MCBF: 7,500,000 lines (Except print head life)
Print head life: 300,000,000 Dots
Operation Temperature 0℃ ~ 40℃ ( 32℉ ~ 104℉)
Operation humidity
Storage temperature
Storage humidity
30% ~ 80%
-5℃ ~ 50℃ ( 23℉ ~ 122℉)
10% ~ 95%
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