Element RW-337D User manual

RW-337D
Receipt Printer User Manual
Rev 1.01

RW-337D User Manual I Page 1of 69
Declaration
Information in this document is subject to change without notice. Element
LTD. (hereinafter referred to as “element”) reserves the right to improve
product as new technology, components, software, and firmware become
available. If users need further data about this product or have any doubt
about safety issues that might arise from using it, please feel free to
contact your dealer.
No part of this document may be reproduced or transmitted in any form
or by any means, electronic or mechanical, for any purpose without the
express written permission of element.
Copyright
Copyright © 2021 Element.
Warning and Caution
Warning: Items shall be strictly followed to avoid damages to body
and equipment.
Caution: Items with important information and prompts for
operating the printer.

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General Safety Instruction
Before installing and using the printer, please read the following items
carefully:
1. Safety Instructions
Warning: Do not touch the cutter and tear-off bar of the printer.
Warning: The print head is at a high temperature during printing or
just after operation, do not touch it or its peripherals for reasons of
safety.
Warning: The print head is an ESD-sensitive device. To prevent
damage, do not touch either its printing parts or connecting parts.
2. Cautions
1) Install the printer on a flat and stable surface.
2) Reserve adequate space around the printer so that convenient
operation and maintenance can be performed.
3) Keep the printer away from water sources, direct sunlight, strong light
and heat.
4) Do not use or store the printer in a place exposed to heat or fire,
moisture or other pollution.
5) Do not place the printer on a place exposed to vibration or impact.
6) Avoid exposing the printer to condensation. In case of condensation,
ensure it has been completely removed before turn on the power.
7) Connect the power adapter to an appropriate grounded outlet. Avoid
sharing a single electrical outlet with large power motors and other

RW-337D User Manual I Page 3of 69
devices that may cause the fluctuation in voltage.
8) The power socket should be installed near the equipment and should
be easily accessible.
9) Turn off the power if you do not use the printer for a long time.
10) Do not spill water or other electric substances (like metal) on the
printer. If this happens, turn off the power immediately.
11) Do not allow the printer to start printing without paper loaded,
otherwise the print head and platen roller will be damaged.
12) To ensure print quality and normal lifetime, use recommended or
good quality paper and ribbon.
13) Shut down the printer when connecting or disconnecting interface
connectors to avoid damage to the control board.
14) Do not disassemble the printer without guidance from a technician,
even for the purpose of repair.
15) Keep this manual safe and at hand for reference purpose.

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Contents
1.1 OUTLINE .....................................................................................................8
1.2 FEATURES ....................................................................................................8
2 SPECIFICATIONS .......................................................9
2.1 MAIN SPECIFICATION .....................................................................................9
2.2 CUTTER SPECIFICATION.................................................................................10
2.3 PAPER SPECIFICATION...................................................................................10
2.3.1 Continuous paper............................................................................10
2.3.2 Marked paper .................................................................................11
2.3.3 Recommended paper......................................................................12
2.4 RIBBON SPECIFICATION.................................................................................13
2.4.1 Ribbon model..................................................................................13
2.4.2 Dimensions......................................................................................13
2.5 PRINT AND TEAR-OFF POSITION .....................................................................14
2.5.1 Print position...................................................................................14
2.5.2Tear-off position...............................................................................15
3 OUTLINE AND PARTS..............................................16
3.1 OUTLINE AND PARTS....................................................................................16
3.2 LEDS AND BUZZER ......................................................................................20
4 INSTALLING............................................................21
4.1 UNPACKING ...............................................................................................21
4.2 MOUNTING THE PRINTER .............................................................................21
4.2.1 Horizontal mounting .......................................................................21
4.2.2 Wall-mounting (optional) ...............................................................22
4.3 CONNECTING POWER CORD...........................................................................23

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4.4 CONNECTING OPTIONAL INTERFACE CABLE........................................................24
4.5 CONNECTING CASH DRAWER..........................................................................25
4.6 INSTALLING RIBBON.....................................................................................26
4.7 LOADING PAPER ROLL ..................................................................................27
4.7.1 Paper type.......................................................................................27
4.7.2 Loading/replacing paper roll ..........................................................27
4.8 PRINTER SELF-TEST ......................................................................................30
4.8.1 Turn on the printer..........................................................................30
4.8.2 Print self-test page..........................................................................30
4.9 INSTALLING THE PRINTER DRIVER....................................................................30
4.9.1 Typical installation` .........................................................................31
4.9.2 Advanced installation .....................................................................34
4.9.3 USB device driver installation .........................................................36
4.10 HOW TO USE THE DRIVER...........................................................................44
4.10.1 User-defined page.........................................................................44
4.10.2 Parameter explanation .................................................................47
5 MAINTENANCE ......................................................57
5.1 PLATEN ROLLER CLEANING.............................................................................57
5.2 MARK SENSOR CLEANING..............................................................................58
5.3 CLEAR PAPER JAM........................................................................................58
6 INTERFACE SIGNAL.................................................59
6.1 USB INTERFACE ..........................................................................................59
6.2 PARALLEL INTERFACE....................................................................................59
6.3 SERIAL INTERFACE........................................................................................61
6.4 ETHERNET .................................................................................................61
6.5 CASH DRAWER DEFINITION............................................................................63
7 TROUBLESHOOTING...............................................65

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7.1 CUTTER ERROR TROUBLESHOOTING.................................................................65
7.2 PRINTER DOESN’T WORK..............................................................................65
7.3 ERROR LED AND BUZZER..............................................................................66
7.4 PROBLEMS DURING PRINTING........................................................................66
7.5 PROBLEMS USING DRIVER ............................................................................68

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1 OVERVIEW
1.1 Outline
The RW-337D is a 9-pin serial impact dot matrix receipt printer offering
high quality, high speed, and stable performance. It is widely used in POS
system, kitchen and finance applications, etc.
The RW-337D can be connected with other devices via USB, parallel, serial,
and Ethernet interface, and it can provide drivers for operating systems
such as Windows 2003 /XP / 7 / 8.1 / 10.
1.2 Features
➢Support bi-directional printing.
➢Support two color printing
➢Support two interfaces
➢Support bi-directional carriage return
➢Supports multi-layer paper
➢Easy paper loading
➢Easy operation and maintenance
➢Supports marked paper and continuous paper for printing
➢Compatible with paper in various widths
➢Automatic paper cut
➢Cash drawer control connector
➢Communication interface optional
➢Printer firmware updated online.

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2 Specifications
2.1 Main Specification
Item
Specification
Print mode
9-pin serial impact dot matrix
Print speed
Max. 4.7LPS (400 dots/line)
Print width
Max. 400 (half dots)/200(full dots)
Paper
Paper type
Continuous paper or marked paper
Single layer
Paper width: 80±0.5mm, 76±0.5mm, 69.5±0.5mm,
57.5±0.5mm;
Paper thickness: 0.06—0.085mm
Multi-layer paper
(1 original+1
copies)
Paper width: 80±0.5mm, 76±0.5mm, 69.5±0.5mm,
57.5±0.5mm;
Paper thickness: 0.05—0.08mm (single page), total
thickness≤0.14 mm (total pages)
Character
Character type
Font A: 9×9 Font B: 7×9 Chinese: 16×16
Characters/line
(Default)
80/76mm
69.5mm
57.5mm
Font A
33 CPL
30 CPL
25 CPL
Font B
40 CPL
36 CPL
30 CPL
Chinese
22 CPL
20 CPL
16 CPL
Character size
(Default)
Font A: 1.6×3.1mm Font B: 1.2×3.1mm Chinese:
2.7×2.9mm
Characters/inch
(Default)
Font A: 13.3CPI Font B: 16CPI Chinese:
8.9CPI
Data
buffer
Receive buffer
64K/4KB/40bytes
NV bit image
data area
128KB
User NV memory
8KB
Ribbon specification
ERC-38 ribbon cartridge
Ribbon lifetime
ERC-38 (P)
4,000,000 characters
ERC-38 (B)
3,000,000 characters
ERC-38
(B/R)
Black: 1,500,000 characters
Red: 750,000 characters
Communication interface
USB / IEEE1284/RS-232 / Ethernet interface
Cash drawer connector
1～2 cash drawers

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Item
Specification
Power supply
DC 24V±5% average current 1.5 A
Reliability
Printing
Mechanism
lifetime
10,000,000 lines
Print head
lifetime
150,000,000 characters
Cutter lifetime
800,000 cuts (paper thickness:0.08mm, standard test
condition)
Operating temperature and
humidity
5～45℃,20～90%RH (40℃)
Storage temperature and
humidity
-40～60℃,20%～93%RH (40℃)
Dimensions
160mm(W)×245mm(D)×154mm(H)
Weight
3.0kg
2.2 Cutter specification
Item
Parameters
Remark
Cut method
Sliding blade
Cut time
600ms
Time for one cutter action
Cut interval
2s
30 cuts/minutes (Max.)
Adapt Paper
0.065～0.1mm
Normal paper with same thickness
Operation voltage
24VDC
Max. repose current
1.5A
24VDC
Cutter lifetime
1800,000 cuts
Paper thickness:0.08mm, standard test
condition
2.3 Paper Specification
2.3.1 Continuous paper
1) Normal paper
➢Paper width:
80±0.5mm / 76±0.5mm / 69.5±0.5mm / 57.5±0.5mm
➢Max. paper roll O/D: Φ83mm
➢Paper roll core: ID Φ12.5mm; OD Φ16mm

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➢Paper thickness: 0.06 - 0.085mm
2) Multi-layer paper (1 original +1 copy)
➢Paper width:
80±0.5mm / 76±0.5mm / 69.5±0.5mm / 57.5±0.5mm
➢Paper thickness:
0.05 - 0.08mm (single layer), total thickness≤0.14 mm
(multi-layer)
Caution:
Use the multi-layer paper (1 original + 1 copy) with the original layer
thicker than its under-layer.
2.3.2 Marked paper
Besides the requirements of the continuous paper, marked paper should
meet the following requirements:
1) Mark position
➢RW-337D printer reserves 8 positions for mark sensor, which can
detect marks on either the front side or the reverse side of paper.
Position of the sensor is as shown in the figure.
➢Mark sensor can be equipped and adjusted according to user’s
needs. The default position of mark sensor is on the right side of
paper (paper feed direction) as shown in the figure to detect the
mark on the front side.

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2) Following parameters are recommended for marks:
➢Mark width (L1): 5mm≤L1≤10mm
➢Mark height (L2): 12mm≤L2≤ paper width
➢Distance between marks (L3): 20mm≤L3≤500mm
3) The black mark’s reflectivity should be ≤15%, and the other part’s
reflectivity should be ≥ 85%. There should be no image between the
two marks, such as the advertisement etc.
Caution:
Do not paste the paper to the core.
2.3.3 Recommended paper
Oji paper mfg. Co., Ltd.: Register paper
Caution:
To ensure quality print and normal lifetime of print head and cutter,
please use recommended paper or its equivalent;
Do not stick paper to the paper roll core shaft.

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2.4 Ribbon specification
2.4.1 Ribbon model
Model
Color
ERC-38(P)
Purple
ERC-38(B)
Black
ERC-38(B/R)
Black / Red
2.4.2 Dimensions
Unit:mm

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Caution:
Please use the recommended original ribbon to ensure the printing
quality and lifetime of the printer transmission part.
2.5 Print and Tear-off Position
2.5.1 Print position
L1: Paper width L2: Print width

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L3: Print left margin L4: Print right margin
According to the different paper width of the L1, the print width (L2) and
the left/right margin (L3/L4) should be changed as below:
Paper width (L1)
Print width (L2)
Left margin (L3)
Right margin (L4)
80mm
63.4mm
6.8mm
9.8mm
76mm
63.4mm
6.8mm
5.8mm
69.5mm
57mm
6.8mm
5.7mm
57.5mm
47.5mm
6.8mm
3.2mm
2.5.2Tear-off position
L1: About 21.5mm
L2: About 34mm

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3 Outline and Parts
3.1 Outline and Parts
1—Rear cover
2—Tear-off bar
3—Front cover
4—POWER LED
5—ERROR LED

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6—PAPER LED
7—FEED button
8—Power switch
9—Latch for opening rear cover
10—Horizontal pluggable communication interface (optional)
11—Vertical pluggable communication interface (optional)
12—Cash drawer connector
13—Power connector
14—Cutter sliding Blade
15—Platen roller
16—Adjusting lever of paper near end sensor
17—Ribbon
18—Paper near end sensor (optional)
19—Paper cabinet
20—Paper end sensor
21—Mark sensor (optional)
22—Sensor on rear cover
23—Paper guide
Functions of parts:
1) POWER LED(4)
Indicate power status (on/off). When turning on printer, POWER LED is
always on; when turning off printer, POWER LED is always off.
2) ERROR LED(5)
Indicate all error status. Under normal conditions, ERROR LED is
always off; under error conditions, ERROR LED will flash

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3) PAPER LED(6)
Indicate paper status of the printer. Under normal conditions, PAPER
LED is always off; under paper end or paper near end conditions, it is
always on
4) FEED button(7)
➢Press the button while turning on the printer, a self-test page will
be printed.
➢In the normal status, press the FEED button for a short time, the
printer will feed paper one line at a time. Under continuous
paper mode, hold the FEED button, the printer will feed paper
constantly. Under marked paper mode, it will feed paper to the
next mark.
➢In HP error status, hold the FEED button for a long time, the
printer will recover from HP error and start carriage verify check.
➢In cutter error status, hold the FEED button for a long time, the
printer will recover from cutter error and start cut.
➢In error status other than described above, press FEED button,
the printer will have no action.
5) Power switch(8)
Turn on/off the printer. “O” is to turn off the printer; “—” is to turn on
the printer.
6) Latch for opening rear cover(9)
Pull the latch to open the rear cover.
7) Paper near end sensor(18)
Detect the status of paper roll. If paper near end, the PAPER LED will

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be on, the ERROR LED will flash and indicate user to replace paper.
The printer will continue printing until the paper is out.
8) Paper end sensor(20)
Paper end sensor is used to detect the paper status (paper
presence/paper end).
9) Mark sensor(21)
When using mark paper, mark sensor is used to detect mark.
10) Rear cover sensor(22)
Rear cover sensor is used to detect the status of the rear cover (open /
close).
11) Paper guide(23)
There are three long slots at the bottom of paper cabinet. The paper
guide could be plugged in different slot which is suitable for different
wide paper, such as 76.5±0.5 mm, 69.5±0.5 mm, 57.5±0.5 mm. If
paper guide is not been used, the printer is suitable for 80±0.5 mm
paper width.
Caution:
The paper guide is a necessary part of the printer for adjusting paper
width, please keep it carefully.