Epson RP-U420 Series User manual

two-station receipt printer
User’s Manual
401264403

2RP-U420 User’s Manual
English
All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in
any form or by any means, electronic, mechanical, photocopying, recording, or otherwise, without the prior
written permission of Seiko Epson Corporation. No patent liability is assumed with respect to the use of the
information contained herein. While every precaution has been taken in the preparation of this book, Seiko
Epson Corporation assumes no responsibility for errors or omissions. Neither is any liability assumed for
damages resulting from the use of the information contained herein.
Neither Seiko Epson Corporation nor its affiliates shall be liable to the purchaser of this product or third parties
for damages, losses, costs, or expenses incurred by purchaser or third parties as a result of: accident, misuse, or
abuse of this product or unauthorized modifications, repairs, or alterations to this product, or (excluding the
U.S.) failure to strictly comply with Seiko Epson Corporation’s operating and maintenance instructions.
Seiko Epson Corporation shall not be liable against any damages or problems arising from the use of any options
or any consumable products other than those designated as Original Epson Products or Epson Approved
Products by Seiko Epson Corporation.
EPSON is a registered trademark of Seiko Epson Corporation in Japan and other countries/regions.
NOTICE: The contents of this manual are subject to change without notice.
Copyright © 2000 by Seiko Epson Corporation, Nagano, Japan.
Standards and Approvals
The following standards are applied only to the printers that are so labeled. (EMC is tested using the Epson
power supplies.)
Europe: CE marking
Oceania: AS/NZS CISPR22 Class A
WARNING
This is a Class A product. In a domestic environment this product may cause radio interference in which case
the user may be required to take adequate measures.
The connection of a non-shielded printer interface cable to this printer will invalidate the EMC standards of
this device.
You are cautioned that changes or modifications not expressly approved by Seiko Epson Corporation could
void your authority to operate the equipment.
CE Marking
The printer conforms to the following Directives and Norms:
Directive 2004/108/EC EN 55022 Class A
EN 55024
EN 61000-4-2
EN 61000-4-3
EN 61000-4-4
EN 61000-4-5
EN 61000-4-6
EN 61000-4-11
Directive 90/384/EEC EN45501

RP-U420 User’s Manual 3
English
Safety Precautions
This section presents important information intended to ensure safe and
effective use of this product. Please read this section carefully and store it in an
accessible location.
WARNING:
Shut down your equipment immediately if it produces smoke, a strange
odor, or unusual noise. Continued use may lead to fire.
Immediately unplug the equipment and contact your dealer or a Seiko
Epson service center for advice.
Never attempt to repair this product yourself. Improper repair work can
be dangerous.
Never disassemble or modify this product. Tampering with this product
may result in injury or fire.
Be sure to use the specified power source. Connection to an improper
power source may cause fire.
Do not allow foreign matter to fall into the equipment. Penetration of
foreign objects may lead to fire.
If water or other liquid spills into this equipment, unplug the equipment
immediately, and then contact your dealer or a Seiko Epson service
center for advice. Continued usage may lead to fire.
Do not use aerosol sprayers containing flammable gas inside or around
this product. Doing so may cause fire.
CAUTION:
Do not connect cables in ways other than those mentioned in this
manual. Different connections may cause equipment damage and
burning.
Be sure to set this equipment on a firm, stable, horizontal surface.
Product may break or cause injury if it falls.
Do not use in locations subject to high humidity or dust levels. Excessive
humidity and dust may cause equipment damage or fire.
Do not place heavy objects on top of this product. Never stand or lean
on this product. Equipment may fall or collapse, causing breakage and
possible injury.
To ensure safety, please unplug this product prior to leaving it unused for
an extended period.

4RP-U420 User’s Manual
English
Warning and Caution labels
The warning and caution labels on the product indicate the following
precautions.
WARNING:
Do not connect a telephone line to the drawer kick-out connector;
otherwise the printer and the telephone line may be damaged.
CAUTION:
During printing or after printing, the print head can be very hot.
Restriction of Use
When this product is used for applications requiring high reliability/safety,
such as transportation devices related to aviation, rail, marine, automotive,
etc.; disaster prevention devices; various safety devices, etc.; or functional/
precision devices, etc.; you should use this product only after giving
consideration to including fail-safes and redundancies into your design to
maintain safety and total system reliability. Because this product was not
intended for use in applications requiring extremely high reliability/safety,
such as aerospace equipment, main communication equipment, nuclear power
control equipment, or medical equipment related to direct medical care, etc.,
please make your own judgment on this product’s suitability after a full
evaluation.
Downloading Drivers, Utilities, and Manuals
Drivers, utilities, and manuals can be downloaded from one of the following
URLs.
For customers in North America, go to the following web site:
http://www.epsonexpert.com/ and follow the on-screen instructions.
For customers in other countries, go to the following web site:
http://www.epson-pos.com/
Unpacking
The following items are included for the standard specification printer. If any
items are damaged, please contact your dealer.
❏Printer
❏Ribbon cassette
❏Switch cover
❏Stamp unit
❏Roll paper ×2
❏Take-up spool
❏RP-U420 User’s Manual (this book)

RP-U420 User’s Manual 5
English
Connectors
Installing the Ribbon Cassette
Use the EPSON ERC-32 ribbon cassette for your printer. The use of any ribbon
cassettes other than those approved by Epson may damage the printer and
will void the warranty.
CAUTION:
Never turn the ribbon knob in the opposite direction of the arrow
marked on the cassette; otherwise the ribbon cassette may be
damaged.
1. Be sure the printer is not receiving data when you replace a ribbon
cassette; otherwise data may be lost.
2. Open the cover.
3. If you are replacing a used ribbon, grasp the end of the tab and remove it
from the printer.
interface
grounding screw
power supply
drawer kick-out
tab

6RP-U420 User’s Manual
English
4. Turn the ribbon knob two or three times in the direction of the arrow to
take up any slack in the ribbon.
5. Insert the ribbon cassette in the printer until it clicks and rotate the
cassette’s knob two or three times. This is necessary to place the ribbon in
the correct position. Make sure that the ribbon is installed below the
printer head without wrinkles or creases.
If the ribbon is not installed correctly, remove the cassette and repeat steps
4 & 5 above.
Using the Power Switch Cover
WARNING:
If an accident occurs when the power switch cover is attached, unplug
the DC cable immediately. Continued usage may lead to fire.
You can use the power switch cover to make sure that the power switch is not
accidentally pressed. If you want to use this cover, install it as shown in the
illustration below.
Installing the Stamp Unit
Referring to the illustration below, insert the stamp unit into the correct
position in the printer.
CAUTION:
Please check the stamp print from time to time to prevent the stamp
print from becoming too light.

RP-U420 User’s Manual 7
English
Installing the Roll Paper
Use a roll paper that matches the printer's specifications. See page 10 for paper
specifications.
1. Make sure that the edge of the paper is straight, as shown on the left side
of the illustration below.
2. Turn on the printer and open the printer cover.
3. Insert the roll paper in both the receipt and journal sides of the printer.
4. For each roll, insert the tip of the paper into the paper inlet while pressing
the release lever so that the tip of the paper comes out of the paper exit.
5. If the paper was not fed far enough, press the FEED button to feed
additional paper.
6. Insert the tip of the journal paper into the groove on the take-up spool and
rotate the spool two or three times to secure the paper. Be sure that the
right side of the paper is aligned with the spool’s flange.
7. Install the take-up spool and close the printer cover.
Note:
You need to replace the used roll paper with new one when PAPER OUT or
JOURNAL OUT light is on.
Stamp Button
When you want to check if a stamp is installed correctly and its print quality,
push the blue button shown below to do stamp printing.
edge of paper
release lever

8RP-U420 User’s Manual
English
Troubleshooting
The ERROR light is flashing and the printer does not print.
First, turn off the printer and check for a paper jam.
If there is no paper jam, turn off the printer and turn it back on after about 10
seconds. If the ERROR light is still flashing, contact a qualified service person.
The printer sounds like it is printing, but nothing is printed.
The ribbon cassette may be worn out or not installed properly. Re-install or
replace it as described in this manual.
Paper is jammed inside the printer.
CAUTION:
Do not touch the print head because it can be very hot after printing
continuously for a long time.
Do not move the print head carriage. Moving the carriage may cause
abnormal noise during printing and the printing position may be shifted.
To clear a paper jam, follow the steps below:
1. Turn the printer off, open the printer cover, and remove the take-up
device.
2. Pull up two release levers forward, then lift the clamshell backward.
3. After lifting the clamshell, remove the paper.
4. Push back the clamshell back until it clicks into place.
5. Put the take-up device back in the printer.
6. Reinstall the roll paper; then turn the power on to start operation.

RP-U420 User’s Manual 9
English
RP-U420 Specifications
lps: lines per second
cpi: characters per 25.4 mm (characters per inch)
*1: Be sure to use a safety-standards-applied power source that meets the following
specifications.
Rated output: 24 V/2.0 A or more, Maximum output: 240 VA or less
Print method: 9-pin serial impact dot matrix
Print fonts: 7 ×9 (ANK)/16 ×9 (Chinese) with 2 position column spacing
cpl: characters per line ANK: Receipt/journal: 24, Validation: 55
Chinese: Receipt/journal: 12, Validation: 27
Print speed: 3 lps (excluding data transfer and processing time)
Maximum print
positions:
Receipt/Journal: 216 dots
Validation: 495 dots
Dot space: approximately 0.17 mm {0.0067"} (half dot pitch)
Printing direction: Bi-directional
Ribbon specifications: ERC-32
Life: 4,000,000 characters (DC 24 V, 25°C, energizing width, 7 ×9
font, receipt/journal 9 + 9 columns, continuous printing, ASCII
code hex 20-5F rolling pattern printing)
Paper specifications:
Paper feed method: Friction feed
Paper feed pitch: 4.23 mm {1/6"}
Fast paper feed speed: Receipt issue: Continuous paper feeding: 30 lps
Other fast printing: Maximum 12 lps
Roll Paper: Type: High quality roll paper
Width: 44.5 ± 0.5 mm {1.75 ± 0.02"}
Thickness: 0.06 - 0.09 mm {0.002 - 0.004"}
Mass: 52.3 - 64.0 g/m2
Maximum diameter: 83 mm {3.27"}
Validation Paper: Normal paper
Dimensions: 135 ×70 to 210 ×70 mm {5.32 ×2.76 to 8.27 ×2.76"}
Thickness: 0.07 - 0.14 mm {0.0028 - 0.0055"}
Copy paper (Normal paper + carbon paper or pressure sensitive
copy paper)
Dimensions: 135 ×70 to 210 ×70 mm {5.32 ×2.76 to 8.27 ×2.76"}
Number of sheets: 2 ply (1 original and one copy) maximum
Total thickness: 0.14 mm {0.0055"} maximum
Power supply*1:DC +24 V ±5% (optional power supply: EPSON PS-180)
Temperature: Operating: 5 to 45°C {41 to 113°F}
Storage: −10 to 50°C {14 to 122°F}
(except for paper and ribbon)
Humidity: 10 to 90% without condensation (except for paper and ribbon)
Reliability: Life: 8,000,000 lines
MCBF: 20,000,000 lines
Print head life: 300,000,000 dots/wire
Autocutter life: 800,000 cuts

WEEE (Waste Electrical and Electronic Equipment) Directive
English
The crossed out wheeled bin label that can be found on
your product indicates that this product should not be
disposed of via the normal household waste stream. To
prevent possible harm to the environment or human health
please separate this product from other waste streams to
ensure that it can be recycled in an environmentally sound
manner. For more details on available collection facilities
please contact your local government office or the retailer
where you purchased this product.
Deutsch
Der Aufkleber mit durchgekreuzter Mülltonne an diesem
Produkt weist darauf hin, dass dieses Produkt nicht im
normalen Hausmüll entsorgt werden darf. Zur Vermeidung
einer möglichen Beeinträchtigung der Umwelt oder der
menschlichen Gesundheit und um zu gewährleisten, dass
es in einer umweltverträglichen Weise recycelt wird, darf
dieses Produkt nicht in den Hausmüll gegeben werden.
Informationen zu Entsorgungseinrichtungen erhalten Sie
bei der zuständigen Behörde oder dem Geschäft, in dem
Sie dieses Produkt erworben haben.
Français
L'étiquette apposée sur ce produit et représentant une
poubelle barrée indique que le produit ne peut être mis au
rebut avec les déchets domestiques normaux. Afin d'éviter
d'éventuels dommages au niveau de l'environnement ou
sur la santé, veuillez séparer ce produit des autres
déchets de manière à garantir qu'il soit recyclé de manière
sûre au niveau environnemental. Pour plus de détails sur
les sites de collecte existants, veuillez contacter
l'administration locale ou le détaillant auprès duquel vous
avez acheté ce produit.
Italiano
L'etichetta con il contenitore barrato applicata sull'imballo
indica che il prodotto non deve essere smaltito tramite la
procedura normale di smaltimento dei rifiuti domestici. Per
evitare eventuali danni all'ambiente e alla salute umana,
separare questo prodotto da altri rifiuti domestici in modo
che possa essere riciclato in base alle procedure di
rispetto dell'ambiente. Per maggiori dettagli sulle strutture
di raccolta disponibili, contattare l'ufficio competente del
proprio comune o il rivenditore del prodotto.
Español
La etiqueta de un contenedor tachado que hallará en su
producto indica que este producto no se puede tirar con la
basura doméstica normal. Para impedir posibles daños
medioambientales o para la salud, separe este producto
de otros canales de desecho para garantizar que se
recicle de una forma segura para el medio ambiente. Para
más información sobre las instalaciones de recolección
disponibles, diríjase a las autoridades locales o al punto
de venta donde adquirió este producto.
Português
A etiqueta com o símbolo de um contentor de lixo traçado
com uma cruz que aparece no produto indica que este
produto não deve ser deitado fora juntamente com o lixo
doméstico. Para evitar possíveis danos no ambiente ou na
saúde pública, por favor separe este produto de outros
lixos; desta forma, terá a certeza de que pode ser
reciclado através de métodos não prejudiciais ao
ambiente. Para obter mais informações sobre os locais de
recolha de lixo disponíveis, contacte a sua junta de
freguesia, câmara municipal ou localonde comprou este
produto.
Nederlands
Op uw product is een label van een rolcontainer met een
kruis erdoor aangebracht. Dit label wil zeggen dat dit
product niet bij het normale huishoudelijk afval mag
worden ingezameld. Om eventuele schade aan het milieu
of de gezondheid van de mens te voorkomen moet dit
product gescheiden van al het ander afval worden
ingezameld, zodat het op een verantwoorde wijze kan
worden verwerkt. Voor meer informatie over uw lokale
afvalinzameling wendt u zich tot uw gemeente of de
leverancier bij wie u dit product hebt gekocht.
Dansk
Etiketten med et kryds over skraldespanden på hjul, der
sidder på produktet, angiver, at dette produkt ikke må
bortskaffes sammen med almindeligt husholdningsaffald.
For at beskytte miljø og helbred skal dette produkt
bortskaffes separat, så det kan genbruges på en måde,
der er god for miljøet. Kontakt de lokale myndigheder eller
den forhandler, hos hvem du har købt produktet,
vedrørende steder, hvor du kan aflevere produktet.
Suomi
Laite on merkitty jäteastia-symbolilla, jonka yli on vedetty
rasti. Tämä tarkoittaa, ettei laitetta saa hävittää normaalin
talousjätteen mukana. Älä hävitä laitetta normaalin jätteen
seassa vaan varmista, että laite kierrätetään
ympäristöystävällisellä tavalla, jottei ympäristölle tai
ihmisille aiheudu vahinkoa. Lisätietoja kierrätyksestä ja
keräyspisteistä saa ottamalla yhteyttä paikallisiin
viranomaisiin tai jälleenmyyjään, jolta laite ostettiin.
Svenska
Symbolen med en överkorsad soptunna innebär att denna
produkt inte får kastas i vanligt hushållsavfall. För att
skydda miljön ska denna produkt inte kastas tillsammans
med vanligt hushållsavfall utan lämnas för återvinning på
tillbörligt sätt. För mer information om uppsamlingsplatser
kontakta din lokala myndighet eller den återförsäljare där
du har köpt produkten.
Norsk
Det er krysset over merket av beholderen på hjul som
vises på produktet, som angir at dette produktet ikke skal
kastes sammen med vanlig husholdningsavfall. Hold dette
produktet atskilt fra annet avfall slik at det kan resirkuleres
på en miljømessig forsvarlig måte og dermed forhindre
eventuell skade på miljø eller helse. Hvis du vil ha mer
informasjon om hvor produktet kan leveres inn, kontakter
du kommunale myndigheter eller forhandleren der du
kjøpte dette produktet.
This information only applies to customers in the European Union, according to
Directive 2002/96/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL
OF 27 January 2003 on waste electrical and electronic equipment (WEEE) and
legislation transposing and implementing it into the various national legal systems.
For other countries, please contact your local government to investigate the
possibility of recycling your product.

Česky
Štítek s přeškrtnutým odpadkovým košem na kolečkách,
který lze nalézt na výrobku, označuje, že tento product se
nemá likvidovat s běžným domovním odpadem. V zájmu
ochrany životního prostředí a lidského zdraví zlikvidujte
tento výrobek jako tříděný odpad, který se recykluje
způsobem šetrným k životnímu prostředí. Podrobnější
informace o sběrných dvorech pro tříděný odpad získáte
na obecním úřaděnebo u prodejce, u kterého jste
příslušný výrobek zakoupili.
Magyar
A terméken található, áthúzott szemetest ábrázoló címke
azt jelzi, hogy ezt a terméket nem szabad a rendes
háztartási szeméttel együtt kidobni. Az esetleges
környezeti- vagy egészségkárosodást megelõzendõ,
kérjük, hogy ezt a terméket a többi szeméttõl elkülönítve
helyezze el, és biztosítsa, hogy azt környezetbarát módon
újrahasznosítsák. A rendelkezésére álló begyûjtõ
létesítményekrõl kérjük tájékozódjon a megfelelõ helyi
állami szerveknél vagy a viszonteladónál, ahol a terméket
vásárolta.
Polski
Symbol przekreślonego kosza znajdujący sięna produkcie
oznacza, że nie może on byćutylizowany razem z
normalnymi odpadami z gospodarstwa domowego. Aby
zapobiec potencjalnemu zagrożeniu dla środowiska lub
zdrowia ludzkiego, produkt ten należy odseparowaćod
reszty odpadów z gospodarstwa domowego i utylizowaćw
ekologicznie właściwy sposób. Szczegółowe informacje na
temat punktów zbiórki odpadów można uzyskaćw
lokalnych urzędach lub u sprzedawcy danego produktu.
Slovensky
Štítok s preškrtnutým odpadkovým košom na kolieskach,
ktorý je možné nájst’ na výrobku, označuje, že tento
product sa nemá likvidovat’ s bežným komunálnym
odpadom. V záujme ochrany životného prostredia a
ľudského zdravia zlikvidujte tento výrobok ako triedený
odpad, ktorý sa recykluje spôsobom šetrným k životnému
prostrediu. Podrobnejšie informácie o zberných dvoroch
pre triedený odpad získate na obecnom úrade alebo u
predajcu, u ktorého ste príslušný výrobok zakúpili.
Slovenski
Prečrtan koš za smeti na etiketi, katero lahko najdete na
vašem izdelku, pomeni, da tega izdelka ne smete odvreči
podobno kot vse ostale smeti. Da bi preprečili morebitne
škodljive vplive na okolje ali zdravje, ločite izdelek od vseh
ostalih in poskrbite, da bo recikliran na okolju prijazen
način. Natančne informacije o tem, kje se nahajajo
primerna odlagališča, pridobite v vašem krajevnem uradu
ali pri prodajalcu.
Eesti
Teie tootele kleebitud tähis, mis kujutab ratastega
prügikonteinerit, millele on rist peale tõmmatud, keelab
toote kõrvaldamise majapidamisjäätmetega sarnasel viisil.
Keskkonnale või inimeste tervisele tekitatava võimaliku
kahju vältimiseks eraldage toode teistest jäätmetest, et
tagada selle korduvkasutamine keskkonnasäästlikul viisil.
Kui soovite saada rohkem teavet võimalike
kogumispunktide kohta, võtke ühendust kohaliku
omavalituse ametnikuga või teile toote müünud
jaemüüjaga.
Lietuviškai
Užbraukta ratuota šiukšliadėžės etiketė, kuriąrasite ant
jūsųprodukto, reiškia, kad šis produktas neturėtųbūti
išmestas kartu su įprastinėmis buitinėmis šiukšlėmis.
Siekiant išvengti galiamos žalos aplinkai bei žmonių
sveikatai, prašome atskirti šįproduktąnuo kitųatliekų, ir
įsitikinti, kad jis būtųperdirbtas aplinkai nepavojingu būdu.
Jei reikia išsamesnės informacijos apie atliekųsurinkimo
ypatumus, prašome kreiptis įsavo vietos valdžios įstaigas
arba įmažmeninįpardavėją, iš kurio jūs įsigijote šį
produktą.
Latviski
Marķējums ar pārsvītrotu atkritumu tvertni uz ritenīšiem,
kas redzams uz izstrādājuma, norāda, ka šo izstrādājumu
nedrīkst likvidēt kopāar parastajiem sadzīves atkritumiem.
Lai novērstu iespējamo kaitējumu videi vai cilvēku
veselībai, lūdzu, atdaliet šo izstrādājumu no citiem
atkritumiem, tādējādi nodrošinot tāotrreizējo pārstrādi
videi drošāveidā. Papildinformācijai par pieejamajām
atkritumu savākšanas iespējām, lūdzu, sazinieties ar
vietējo pašvaldību vai mazumtirgotāju, no kura jūs
iegādājāties šo izstrādājumu.
Ελληνικά
Ηδιαγραμμένη ετικέτα του τροχοφόρου κάδου
απορριμμάτων που θα βρείτε πάνω στο προϊόν σας
υποδεικνύει ότι αυτό το προϊόν δεν πρέπει να
απορρίπτεται μέσω του κανονικού δικτύου αποκομιδής
οικιακών απορριμμάτων. Για να αποτρέψετε πιθανές
επιπτώσεις στο περιβάλλον ήτην ατομική υγεία,
παρακαλούμε να διαχωρίσετε αυτό το προϊόν από άλλα
δίκτυα αποκομιδής ώστε να διασφαλίσετε ότι είναι δυνατή
ηανακύκλωσή του με έναν περιβαλλοντικά θεμιτό τρόπο.
Για περισσότερες πληροφορίες σχετικά με τις διαθέσιμες
δυνατότητες συλλογής απορριμμάτων, παρακαλούμε να
επικοινωνήσετε με την τοπική κυβερνητική αρχή ήτο
κατάστημα λιανικής από όπου αγοράσατε αυτό το προϊόν.
Türkçe
Ürününüzün üzerinde bulunan çarpıişaretli tekerlekli kutu
etiketi, bu ürünün normal ev atık sistemi vasıtasıyla elden
çıkarılmamasıgerektiğini gösterir. Çevreye ve insan
sağlığına zarar vermeyi önlemek için, lütfen bu ürünü
çevreye zarar vermeyecek şekilde geri dönüşüme tabi
tutulmak üzere diğer atıklardan ayırın. Mevcut toplama
tesisleri ile ilgili ayrıntılıbilgi edinmek için, yerel devlet
makamlarıyla veya bu ürünü satın aldığınız satıcıyla
irtibata geçin.
Română
Eticheta arătând un coşde gunoi tăiat cu douălinii
încrucişate, care poate fi găsităpe produs, indicăfaptul că
acesta nu trebuie aruncat la gunoi laolaltăcu gunoiul
menajer. Pentru a evita posibila degradare a mediului
înconjurător sau a sănătăţii umane, colectaţi separat acest
produs de gunoiul menajer pentru a văasigura căpoate fi
reciclat într-un mod ecologic. Pentru mai multe detalii
privind punctele disponibile de colectare, contactaţi
autorităţile locale sau comerciantul de la care aţi
achiziţionat acest produs.
Български
Етикетът, представляващ зачертано кошче за боклук в
кръг, който можете да видите върху вашия продукт,
означава, че този продукт не трябва да се изхвърля
заедно собикновените домакински отпадъци. За
предпазване от евентуални щети върху околната среда
или човешкото здраве, моля, отделете този продукт от
останалите отпадъци, за да се гарантира, че той ще
бъде рециклиран по екологично съобразен начин. За
повече информация относно наличните места за
събиране на отпадъци, моля, свържете се сместните
власти или търговеца, от когото сте закупили този
продукт.

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