VeriFone Carbon 8 User manual

Verifone Part Number DOC179-123-EN-A, Revision A.1
VERIFONE
CONFIDENTIAL
REVISIONA.1
Carbon 8
Installation Guide

All rights reserved. No part of the contents of this document may be reproduced or transmitted in any form without the written
permission of Verifone, Inc.
The information contained in this document is subject to change without notice. Although Verifone has attempted to ensure the
accuracy of the contents of this document, this document may include errors or omissions. The examples and sample programs are
for illustration only and may not be suited for your purpose. You should verify the applicability of any example or sample program
before placing the software into productive use. This document, including without limitation the examples and software programs, is
supplied “As-Is.”
Verifone, Inc.
1-800-Verifone
www.verifone.com
Verifone Part Number DOC179-123-EN-A, Revision A.1
Carbon 8 Installation Guide
© 2017 Verifone, Inc.
Verifone and the Verifone logo are registered trademarks of Verifone. Other brand names or trademarks associated with Verifone’s
products and services are trademarks of Verifone, Inc.
All other brand names and trademarks appearing in this manual are the property of their respective holders.
Product Warranty:
For Product warranty information, go to http://www.verifone.com/terms.
Comments? Please e-mail all comments on this document to your local Verifone Support Team.

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CONTENTS
PREFACE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Audience. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Organization. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Related Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Conventions and Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Document Conventions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Acronym Definitions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
CHAPTER 1
Device Overview Features and Benefits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Device Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Stand Connectivity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Performance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Security. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Exceptional Ease of Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Modular Countertop Performance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
True Multi-Application Capability . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
CHAPTER 2
Setup Selecting Unit Location. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Ease of Use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Environmental Factors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Electrical Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
PIN Protection Measures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Unpacking the Shipping Carton . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Periodic Inspection. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Examining the Unit’s Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Verifone Carbon Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Connection Ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Establishing Communication . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Connecting by Ethernet Cable . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Connecting by Wi-Fi . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Loading a Paper Roll in the Printer. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Installing or Replacing MSAM Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Connecting Optional Devices. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Optional Device Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Connecting Cash Drawer to the Carbon 10 . . . . . . . . . . . . . . . . . . . . . . . . . 24
Connecting the Power Pack. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Using the Smart Card Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Using the Magnetic Card Reader. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Using the Contactless Reader . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
CHAPTER 3
Specifications Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Consumer Display. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Merchant Tablet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30

CONTENTS
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Printer Stand. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
CHAPTER 4
Maintenance and
Cleaning Additional Safety Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Potentially Explosive Environments . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
CHAPTER 5
Service and Support Service Returns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Accessories and Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Connection Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Power Cables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Peripherals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Cleaning Kit. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
CHAPTER 6
Troubleshooting
Guidelines Blank Display . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39 Printer Paper Jam. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Peripheral Device Does Not Work . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Transactions Fail To Process. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Printer Does Not Print. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Consumer Display Does not Show Correct or Readable Information . . . . . . . . 41
Printer Blade Jams or Printer Door Can’t be Closed . . . . . . . . . . . . . . . . . . . . . 41
APPENDIX A
Caution and
Warning Messages Caution and Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43

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CARBON 8 INSTALLATION GUIDE 5
PREFACE
This guide is the primary source of information for setting up and installing the
Carbon 8.
Audience
This guide describes the card reader’s features, and provides the basic
information for its installation and configuration.
Organization
This guide is organized as follows:
Chapter 1,Device Overview. Provides an overview of the device.
Chapter 2,Setup. Explains setup and installation of the device, selecting a
location, and establishing connections with other devices.
Chapter 3,Specifications. Discusses the power requirements and dimensions of
the device.
Chapter 4,Maintenance and Cleaning. Explains maintenance of the device.
Chapter 5,Service and Support. Provides information on contacting your Verifone
service provider and information on how to order accessories or documentation
from Verifone.
Chapter 6,Troubleshooting Guidelines. Provides troubleshooting guidelines
should you encounter a problem with unit installation and configuration.
Appendix A, Caution and Warning Messages. Shows the UL/cUL certification-
compliant translations of all Warning and Caution messages in this installation
guide.
Related
Documentation
To learn more about the card reader and controller device, refer to the following
set of documents and their associated Verifone Part Numbers (VPNs).
Carbon 8 Certifications and Regulations Sheet VPN DOC179-121-EN-x
Carbon 8 Quick Installation Guide VPN DOC179-122-EN-x
Carbon 8 Printer Module Quick Installation Guide VPN DOC179-132-EN-x
Carbon 8 Printer Module Certs and Regulations Sheet VPN DOC179-125-EN-x

PREFACE
Conventions and Acronyms
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Conventions and
Acronyms
This section describes the conventions and acronyms used in this guide.
Document
Conventions
Various conventions are used to help you quickly identify special formatting.
Table 1 describes these conventions and provides examples of their use.
Acronym Definitions
Various acronyms are used in place of the full definition. Table 2 presents
acronyms and their definitions.
Table 1 Document Conventions
Convention Meaning Example
Blue Text in blue indicates terms that
are cross referenced. See Conventions and Acronyms.
The pencil icon is used to
highlight important information. If exchanging cables, use a Verifone-approved cable.
The caution symbol indicates
possible hardware or software
failure, or loss of data.
Using an incorrectly rated power
supply can damage the unit or
cause it to malfunction.
The lightning symbol is used as
a warning when bodily injury
might occur.
For safety, do not string cables
or cords across a walkway.
NOTE
CAUTION
WARNING
Table 2 Acronym Definitions
Acronym Definitions
COM Communications port
CTLS Contactless
EMV Europay, MasterCard, and Visa
ETH Ethernet
HW Hardware
I/O Input/Output
ITP Internal thermal printer
LCD Liquid crystal display
LPS Lines per second
MSAM Micromodule-Size Secure Access Module
MSR Magnetic-stripe card reader
PCI Payment Card Industry
PIN Personal Identification Number
POI Point of Interaction

PREFACE
Conventions and Acronyms
CARBON 8 INSTALLATION GUIDE 7
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PTS PIN Transaction Security
QVGA Quarter Video Graphics Array
RJ45 Registered Jack 45 modular connector
SAM Secure Access Module
SC Smart card
SCR Smart card reader
SD Secure Digital
SDA Static Data Authentication
SDHC Secure Digital High Capacity
SIM Subscriber Identity Module
SMA SubMiniature version A connector
TFT Thin-film transistor
TLS Transport Layer Security
UI User interface
USB Universal Serial Bus
Table 2 Acronym Definitions (continued)
Acronym Definitions

PREFACE
Conventions and Acronyms
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CARBON 8 INSTALLATION GUIDE 9
CHAPTER 1
Device Overview
This chapter provides a brief description of the Carbon 8 system, a modular
merchant- and consumer-facing device, enabling use as a handheld or stand-
mounted payment solution.
Features and
Benefits
Carbon 8 provides magnetic-stripe card reader (MSR), smart card (SC) and
contactless (CTLS) payment processing with a 5-inch (12.7 cm) color TFT
capacitive touch panel LCD screen integrated with an 8 inch (20.3 cm) tablet. The
Stand provides additional expansion options (such as a bar code scanner and
weighing scale), connectivity features (USB, Ethernet and Cash Drawer), and
power charging. A removable printer module contains an embedded internal
thermal printer (ITP).
Device Connectivity •1 micro SD slot
•1 micro USB 2.0 OTG (can be used for charging)
•1 audio jack
•Service ports
Stand Connectivity •4 USB 2.0 Host ports
•1 Ethernet RJ45
•1 Mod 12 (cash drawer)
•Power
•Service port (Service use only)
Performance •Consumer Display:
•512 MB SDRAM and 512 MB Flash memory
•5-inch color TFT display capacitive touch panel LCD (854 x 480)
•Software-controlled backlight
NOTE
Verifone ships variants of the Carbon 8 system for different markets. Your device
may have different features described in this section.
NOTE
You can find the Carbon 8 service ports on the lower right area behind the
5-inch screen. The Stand ports are accessible from the underside of the unit,
while the tablet ports and slots are on the sides of the lower right corner.

DEVICE OVERVIEW
Features and Benefits
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•Integrated speaker
•Merchant Tablet:
•1 GB SDRAM and 16 GB Flash for System
•8-inch color TFT display capacitive touch panel LCD (1280 x 800)
•Provides power and data to the Carbon 8 unit
•Barcode scanning enabled for front and rear cameras
•Wi-Fi and Bluetooth enabled
•Integrated speakers
•Stand:
•USB 2.0 high-speed connections
•Bluetooth enabled
•Provides ETH and Wi-Fi to connectivity to broadband router
•Cash Drawer interface
•Printer Module:
•Integrated 80mm Thermal Printer with Auto cutter
Security •PCI PTS POI v4.x approved for debit and other PIN-based transactions
•EMV L1 Type Approval (contact and contactless)
•Tamper-resistant construction, TLS protocols, and VeriShield file
authentication
•Supports VeriShield Protect encryption implementations.
Exceptional Ease of
Use
•Capacitive touch-screen UI access for merchant and customer.
•Signature capture screen capability.
•The contactless (CTLS) functionality offers a convenient payment option for
consumers.
•The triple-track, high-coercivity card reader handles most magnetic stripe
cards.
•EMV card reader ensures secure payment option.
•Large (5-inch for customers, 8-inch for merchants) LCD displays simplify
training and reduce help desk calls.
•The multiple font-capable optional thermal printer simplifies paper loading and
reduces paper jams. Uses 80 mm wide x 80 mm diameter paper rolls, prints at
110 mm/sec.
Modular Countertop
Performance
•The 32-bit processing and multi-tasking capabilities ensures fast processing of
payment, payment-related, and value-added applications.

DEVICE OVERVIEW
Features and Benefits
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•Exceptional displays and optional printer graphics-handling capabilities that
quickly render logos, graphical fonts, and character-based languages.
•The Carbon 8 ensures uncompromising reliability from Verifone, the worldwide
leader in e-payment.
True Multi-
Application
Capability
•The Carbon 8 offers 512 MB flash and 512 MB of dynamic memory allocation
for the consumer terminal and 1GB of SDRAM, 16GB of Flash for System for
the merchant tablet, which supports multiple applications on each side.
•The primary smart card reader and the MSAMs safeguard sensitive financial
data and support multiple smart card schemes.
•Carbon 8 units are certified for ISO 7816-1 and ISO 7816-2 standards for
smart card solutions, as well as ISO 14443 type A & B and ISO 18092
standards for CTLS operations.
•The VeriShield security architecture meets published specifications for PCI
PTS POI and provides sophisticated file authentication to prevent execution of
unauthorized software on Carbon 8 devices.

DEVICE OVERVIEW
Features and Benefits
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CARBON 8 INSTALLATION GUIDE 13
CHAPTER 2
Setup
This chapter describes the setup procedures for the Carbon 8, under the following
sections:
•Selecting Unit Location
•Unpacking the Shipping Carton
•Examining the Unit’s Features
•Establishing Communication
•Loading a Paper Roll in the Printer
•Installing or Replacing MSAM Cards
•Connecting Optional Devices
•Connecting the Power Pack
•Using the Smart Card Reader
•Using the Magnetic Card Reader
•Using the Contactless Reader
Selecting Unit
Location
Use the following guidelines when selecting a location for your device.
Ease of Use •Select a location convenient for both merchant and cardholder.
•Select a flat support surface, such as a countertop or table.
•Select a location near a power outlet and a network connection.
•For safety, do not string the power cord or other cables in a walkway or place it
across a walkway on the floor.

SETUP
Unpacking the Shipping Carton
14 CARBON 8 INSTALLATION GUIDE
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Environmental
Factors
•The unit must be used in an attended environment.
•Do not use the terminal where there is high heat, dust, humidity, moisture, or
caustic chemicals or oils.
•Keep the unit away from direct sunlight and anything that radiates heat, such
as a stove or motor.
•Do not use the unit outdoors.
Electrical
Considerations
•Avoid using the Carbon 8 during electrical storms.
•Place the device 10 cm away from metallic objects to avoid interference with
the CTLS field.
•Avoid locations near electrical appliances or other devices that cause
excessive voltage fluctuations or emit electrical noise (for example, air
conditioners, electric motors, neon signs, high-frequency or magnetic security
devices, or computer equipment).
•Do not use the terminal near water or in moist conditions.
PIN Protection
Measures
You can employ several techniques for effective PIN entry screening on the
keypad. Use the following methods in combination or singly, as necessary:
•Position the Carbon 8 on the stand in such a way as to make visual
observation of the PIN entry process infeasible. Examples include:
•Visual shields designed into the check-stand. These shields may be solely
for shielding purposes, or may be part of the general check-stand design.
•Position the Carbon 8 so that it is angled in such a way that PIN spying is
difficult.
•Position the in-store security cameras so that PIN entry is not visible.
•Use signage to limit the view of the Carbon 8 to just that of the cardholder.
•Offer PIN security literature at the point of sale.
Unpacking the
Shipping Carton
Open the shipping carton and carefully inspect its contents for possible tampering
or shipping damage. The Carbon 8 is a secure product and any tampering may
cause the device to cease to function properly.
To unpack the
shipping carton 1Validate the authenticity of the sender by verifying the shipping tracking
number and other information located on the product order paperwork.
CAUTION
The Carbon 8 is not waterproof or dustproof, and is intended for indoor use only.
Any damage to the unit from exposure to rain or dust may void any warranty.

SETUP
Periodic Inspection
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2Remove and inspect the following items:
•Carbon 8 device
•Stand
•Printer
•Power pack
•Ethernet cable
•Paper roll
Refer to Accessories and Documentation for more information about the
device’s related accessories.
3Remove all plastic wrapping from the terminal and other components.
4Remove the clear protective film from the displays.
5Save the shipping carton and packing material for future repacking or moving
of the device.
Periodic
Inspection
Periodically inspect the Carbon 8 terminal for possible tampering. Signs of
tampering include:
•Wires protruding out of the device.
•Foreign objects inserted into the smart card slot or magnetic stripe slot.
•Signs of damage to the tamper-evident labels.
•A Tamper Warning message on the device displays.
If any device is found in tamper state, please remove it from service immediately,
keep it available for potential forensics investigation, and notify your company
security officer and your local Verifone representative or service provider. For
contacting Verifone, please see “Service and Support”.
NOTE
Verifone ships variants of the Carbon 8 for different markets. Your unit may have
different options or accessories described in this section.
WARNING
Do not use a unit that has been tampered with or otherwise damaged. This unit
comes equipped with tamper-evident labels. If a label or component appears
damaged, immediately notify the shipping company and your Verifone
representative or service provider.

SETUP
Examining the Unit’s Features
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Examining the
Unit’s Features
Before you continue the installation process, review the features of the device
(see Figure 1, Figure 2, and Figure 3).
The following illustration shows the Carbon 8 payment components, as well as the
tablet memory expansion and other features.
Figure 1 Carbon 8 Terminal Customer View
The following illustration shows the Carbon 8 tablet features.
Figure 2 Carbon 8 Merchant Tablet View
CTLS
READER
TERMINAL
READER
SMART
CARD
SCREEN
READER
MSR
PORT
MICRO USB
COMPARTMENT
SD CARD
JACK
3.5 MM
HEADSET
PRINTER
TABLET
FRONT
DOOR
POWER
VOLUME
BUTTON
BUTTONS
ADDITIONAL
PORTS
PRINTER
CAMERA

SETUP
Examining the Unit’s Features
CARBON 8 INSTALLATION GUIDE 17
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The following illustration shows the Carbon 8 rear components, featuring the
charging and data contacts, speakers, camera, as well as the MSAM and USB
compartment.
Figure 3 Carbon 8 Rear Features
Verifone Carbon
Features
The Carbon 8 presents the following:
•A touchscreen LCD Consumer Display. The upper left edge of the Consumer
Display acts as the tapping area for contactless transactions.
•A magnetic card reader, built into the top right edge of the Consumer Display.
The arrows indicate swipe direction.
•A smart card reader built into the right side of the Consumer Display.
•8-inch Merchant Tablet display
•Stand
•Printer module
•Printer indicator LED
Connection Ports
Turn the Stand upside down to view the connection ports. The ports provide
communications, peripheral device connections, and power supply.
CHARGING
TABLET
SPEAKER
AND DATA TABLET
REAR
MSAM AND
COMPARTMENT
TERMINAL
SPEAKER
MODEL
AND SERIAL
NUMBERS
CONTACTS CAMERA
TABLET
GRAB
HANDLE
AND FLASH
SERVICE

SETUP
Establishing Communication
18 CARBON 8 INSTALLATION GUIDE
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Figure 4 shows the power, communications and connection ports for the Carbon 8
Stand.
Figure 4 Power and Communication Ports
Establishing
Communication
You can connect the Carbon 8 Stand to your network using an ethernet cable. You
can also connect using the Wi-Fi option.
Connecting by
Ethernet Cable
Connect the ethernet cable to the ETH port on the stand, then route it directly to a
network jack (see Figure 5). This is a direct connection to your network.
Figure 5 Ethernet Connection
Connecting by Wi-Fi
Connect to Wi-Fi by enabling Wi-Fi connectivity on the Tablet or Stand. Select this
option from the Network Settings on the Merchant Tablet.
ETHERNET
PORT
POWER
PORT
0.5 A USB
PORTS
SERVICE
PORT
CASH DRAWER
PORT
1 A USB
PORT
(SERVICE USE ONLY)
WARNING
Do not connect the device to the power supply until all peripherals are attached.

SETUP
Loading a Paper Roll in the Printer
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Loading a Paper
Roll in the
Printer
Before you can process transactions that require a receipt, you must install paper
in the printer.
The Carbon 8 Printer Module uses a roll of 80 mm x 80 mm, single-ply, thermal-
sensitive paper.
A pink out-of-paper indicator line appears on the edge of the paper before the end
of the roll. After this line appears, there is enough paper remaining on the roll to
conclude at least one more transaction.
To install a paper roll 1Hold the Carbon 8 with one hand and slide the printer module off the base of
the terminal. (see Figure 6).
Figure 6 Removing the Printer Module
2Remove any partial roll of paper in the tray.
3Loosen the glued leading edge of the new paper roll or remove the protective
strip. Unwind the paper roll past any glue residue.
4Hold the roll so the paper feeds from the top of the roll.
NOTE
When the LED by the printer door blinks amber, this indicates the printer is out of
paper.
CAUTION
Poor-quality paper can jam the printer and create excessive paper dust. To order
high-quality Verifone paper, refer to Accessories and Documentation.
Store thermal paper in a dry, dark area. Handle thermal paper carefully: impact,
friction, temperature, humidity, and oils affect the color and storage
characteristics of the paper.
Never load a roll of paper with folds, wrinkles, tears, or holes at the edges.

SETUP
Loading a Paper Roll in the Printer
20 CARBON 8 INSTALLATION GUIDE
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5Gently drop the paper roll into the printer tray.
Figure 7 Loading Paper Roll
6Pull the paper past the printer door (see Figure 8).
Figure 8 Pulling Paper Through Before Closing Door
7Align the printer paper to the tabs to the paper guides and hold the paper up
when closing the door.
Figure 9 Aligning Printer Paper