Olivetti JP 90 User manual

JP 90
Printer
SERVICE MANUAL
Code 681640J-00

PUBLICATION ISSUED BY:
Olivetti Lexikon, S.p.A.
Documentation
77, Via Jervis - 10015 Ivrea (Italy)
Copyright © 1996, Olivetti
All rights reserved
TRADEMARKS
CENTRONICS is a trademark of Centronics Data Computer Corporation.
EPSON and LQ 850 are trademarks of Epson Seiko Corporation.
HP, DeskJet and PCL III+ are trademarks of Hewlett-Packard Company.
IBM and Proprinter 4207 are trademarks of International Business Machine Corporation.
MS-DOS and MS-WINDOWS are trademarks of Microsoft Corporation.
Printed in Italy by:

681640J JP 90 - Service Manual iii.
PREFACE
This Service Manual gives the mechanical and electronic information needed to service the JP 90 ink-jet
printer.
Refer to this manual only if the failure has not been corrected after following the troubleshooting steps
explained in the User's Guide.
SUMMARY
This manual is divided into chapters.
The chapters are ordered in a way to develop an autonomous and gradual approach to the printer
functions.
Certain paragraphs in this manual are highlighted with a screen background so as to bring particularly
important information or procedures to your attention.
Disregarding the information explained in these paragraphs could cause printer failures.
SECTOR/RANGE PRODUCT: Q6 JP 90
DISTRIBUTION: General (G)
FIRST EDITION: October 1996

v
681640J JP 90 - Service Manual
TABLE OF CONTENTS
1. OVERVIEW
1-1 1.1 MAJOR CHARACTERISTICS
1-2 1.2 GENERAL BLOCK DIAGRAM
1-3 1.3 LOCATING THE FUNCTIONAL COMPONENTS
1-4 1.4 FIRMWARE AND CHARACTER GENERATORS
1-6 1.5 OPTIONS
1-6 1.6 ACCESSORIES
1-7 1.7 INK-JET PRINT HEAD OPERATION
1-11 1.8 COLOR INK-JET PRINT HEAD OPERATION
2. OPERATING COMMANDS
2-1 2-1 CONSOLE
3. INSTALLATION
3-1 3.1 GENERAL RULES
3-2 3.2 UNPACKING THE PRINTER
3-2 3.3 PLUGGING THE AC/DC ADAPTER TO THE ELECTRICAL POWER OUTLET
3-3 3.4 INSTALLING THE PRINT HEAD
3-5 3.5 INSERTING THE BATTERIES
3-6 3.6 INSERTING THE BATTERY PACK
3-7 3.7 LOADING PAPER
3-9 3.8 PRINT TEST
3-9 3.9 CONNECTING THE PRINTER TO THE SYSTEM
3-9 3.10 POWERING OFF THE PRINTER
4. SOFTWARE INSTALLATION AND USAGE
4-1 4.1 THE WINDOWS ENVIRONMENT
4-2 4.2 THE DOS ENVIRONMENT
5. AUTODIAGNOSTICS, TESTING PROCEDURES AND TROUBLESHOOTING
GUIDE
5-1 5.1 POWER ON DIAGNOSTICS
5-1 5.2 MONOCHROME PRINT TEST
5-2 5.3 DATASCOPE PRINTING (HEX DUMP)
5-3 5.4 TROUBLESHOOTING GUIDE
6. ELECTRICAL CONNECTIONS
6-1 6.1 MAJOR COMPONENTS ON THE XP28 CPU BOARD
6-2 6.2 POWER SUPPLY CIRCUIT
6-3 6.3 CONNECTOR SIGNALS
7. MAINTENANCE
7-1 7.1 CLEANING THE PRINT HEAD AN NOZZLES

vi 681640J
8. DISASSEMBLY/REASSEMBLY PROCEDURES
8-1 8.1 PRELIMINARY WARNINGS
8-2 8.2 PRINTER CASING
8-4 8.3 ASF ASSEMBLY
8-7 8.4 INTAKE UNIT
8-8 8-5 PAPER FEED SHAFT
8-9 8.6 MAIN BOARD
8-10 8.7 PAPER FEED MOTOR
8-11 8.8 BELT AND PRINT HEAD CARRIAGE
8-14 8.9 CARRIAGE MOTOR
8-15 8.10 PAPER DETECTION PHOTOSENSOR
8-16 8.11 CONSOLE

681640J 1-1 JP 90 - Service Manual
1. OVERVIEW
1.1 MAJOR CHARACTERISTICS
The JP 90 is an ink-jet printer that offers a high degree of reliability, an outstanding print quality and runs
runs very quietly.
Technical and Functional Characteristics of the Basic Machine
Print head: Bubble ink-jet with replaceable ink cartridge.
Matrix: 600 x 300 dpi.
Print speed of the monochrome printer version (10 cpi)
DOS: DRAFT 180 cps
LQ 140 cps
Windows : Approximately 3 pages per minute (ppm)
Paper handling: ASF capable of holding 15, 80 g/m2 sheets of paper
Interface: Centronics parallel
Emulation: PCL III+ (HP DJ 500), IBM Proprinter X24, EPSON LQ 850
Power supply: 220-240 V, 110-120 V
Power absorption: < 15 W
Dimensions: Height: 67 mm, width: 300 mm, depth: 132 mm,
weight: 1.1 Kg (without the adapter)
Fig.1-1 JP 90 Printer

1-2 681640J
1.2 GENERAL BLOCK DIAGRAM
ERGONOMICAL INTERFACEERGONOMICAL INTERFACE
ERGONOMICAL INTERFACEERGONOMICAL INTERFACE
ERGONOMICAL INTERFACE
CABLECABLE
CABLECABLE
CABLE
PARALLEL INTERFACEPARALLEL INTERFACE
PARALLEL INTERFACEPARALLEL INTERFACE
PARALLEL INTERFACE
(CENTRONICS)(CENTRONICS)
(CENTRONICS)(CENTRONICS)
(CENTRONICS)
CONSOLECONSOLE
CONSOLECONSOLE
CONSOLE
CARRIAGECARRIAGE
CARRIAGECARRIAGE
CARRIAGE
MOTORMOTOR
MOTORMOTOR
MOTOR
POWER SUPPLY:POWER SUPPLY:
POWER SUPPLY:POWER SUPPLY:
POWER SUPPLY:
--
--
-ALIALI
ALIALI
ALI 009009
009009
009 SOUTH AFRICASOUTH AFRICA
SOUTH AFRICASOUTH AFRICA
SOUTH AFRICA
--
--
-ALIALI
ALIALI
ALI 018018
018018
018 EUROPEEUROPE
EUROPEEUROPE
EUROPE
--
--
-ALIALI
ALIALI
ALI 012012
012012
012 G.B.G.B.
G.B.G.B.
G.B.
--
--
-ALIALI
ALIALI
ALI 013013
013013
013 AUSTRALIAAUSTRALIA
AUSTRALIAAUSTRALIA
AUSTRALIA
--
--
-ALIALI
ALIALI
ALI 014014
014014
014 UNITED STATESUNITED STATES
UNITED STATESUNITED STATES
UNITED STATES
BATTERY PACKBATTERY PACK
BATTERY PACKBATTERY PACK
BATTERY PACK
--
--
-NICDNICD
NICDNICD
NICD
--
--
-NIMHNIMH
NIMHNIMH
NIMH
UNIVERSAL POWER SUPPLYUNIVERSAL POWER SUPPLY
UNIVERSAL POWER SUPPLYUNIVERSAL POWER SUPPLY
UNIVERSAL POWER SUPPLY
ANDAND
ANDAND
AND
FAST BATTERY CHARGERFAST BATTERY CHARGER
FAST BATTERY CHARGERFAST BATTERY CHARGER
FAST BATTERY CHARGER
PAPERPAPER
PAPERPAPER
PAPER
DETECTIONDETECTION
DETECTIONDETECTION
DETECTION
PHOTOSENSORPHOTOSENSOR
PHOTOSENSORPHOTOSENSOR
PHOTOSENSOR
PAPERPAPER
PAPERPAPER
PAPER
MOTORMOTOR
MOTORMOTOR
MOTOR
Note: The boxes with dotted outline indicate the options
CPUCPU
CPUCPU
CPU
BOARDBOARD
BOARDBOARD
BOARD
XP28XP28
XP28XP28
XP28
CIGARETTE LIGHTERCIGARETTE LIGHTER
CIGARETTE LIGHTERCIGARETTE LIGHTER
CIGARETTE LIGHTER
ADAPTER FORADAPTER FOR
ADAPTER FORADAPTER FOR
ADAPTER FOR
AUTOMOBILESAUTOMOBILES
AUTOMOBILESAUTOMOBILES
AUTOMOBILES
PRINT HEADPRINT HEAD
PRINT HEADPRINT HEAD
PRINT HEAD

681640J 1-3 JP 90 - Service Manual
1.3 LOCATING THE FUNCTIONAL COMPONENTS
Listed below are the printer's major components:
1 Casing
2 Console
3 Top cover
4 Paper support
5 Front cover
6 Head transport carriage
7 Sliding paper guide
8 AC/DC power socket
9 Parallel interface connector
10 Extractable battery holder/Battery pack compartment
11 Paper feed motor
12 Suction assembly
13 Head transport carriage motor
14 ASF assembly
6
5
4
3
2
1
14
13
12
11
9
8
7
10

1-4 681640J
1.4 FIRMWARE AND CHARACTER GENERATORS
Basic Emulation:
The basic firmware is stored in a 4 MB EPROM installed on the XP28 CPU board. It emulates the HP
Deskjet 500 (PCL III +), IBM Proprinter X24 and EPSON LQ 850 printers, with all the related character
generators.
The JP 90 selectes between these emulations via software.
Character Generator:
The character generator assigns a specific printable character to each code in the graphic set.
The first 128 codes in the ISO table (0-127) are standard and represent the USA ASCII character set.
National variants and semigraphic symbols are not included in this code group.
TheallocationofcodesfromthesecondISOcharactersettable(128-255)differsdependingonthecountry
and product.
Character Sets:
The following character sets are available in a PCL III+ emulated machine:
CP 437 International ROMAN 8 Turkish alphabet: CP 857; ISO 8859/9 PC
8 Denmark/Norway CP-850 Multilingual Cyrillic alphabet: CP 866; CP 855; ISO 8859/5
ECMA 94 LATINO 1 ISO Nb 4 United Kingdom Greek alphabet: CP 210; CP 851; ISO 8859/7
ISO Nb 21 Germany ISO Nb 69 France Hebrew alphabet: CP 862; ISO 8859/8
ISO Nb 15 Italia ISO Nb 60 Norway 1 PC Slovenia: CP 852; ISO 8859/2
ISO Nb 61 Norway 2 ISO Nb 11 Sweden: Names Windows 3.1 ANSI
ISO Nb 10 Sweden ISO Nb 17 Spain Windows 3.1 Eastern Europe
ISO Nb 6 USA (ASCII) ISO Nb 2 IRV Windows 3.1 Turkey
ISO Nb 16 Portugal ISO Nb 14 JIS ASCII Windows 3.1 Cyrillic
Legal CP 860 Portugal Windows 3.1 Greece
Denmark OPE 1 UNIX International
Denmark OPE 2 Spain 2
CP 863 French-Canadian
The following character sets are available in an IBM Proprinter X24 emulated machine:
International 1 International 2
Denmark OPE 1 Denmark OPE 2
Spain 2 CP 850
CP 860
The following character sets are available in an EPSON LQ 850 emulated machine:
ITALICS Table GRAPHICS Table:
USA France USA
Gernamy Great Britain Multilingual
Denmark 1 Denmark 2 Portugal
Sweden Italy French-Canadian
Spain 1 Spain 2 Norway
Japan Norway
Latin America Corea
Legal

681640J 1-5 JP 90 - Service Manual
Resident Fonts:
The character fonts residing in the machine firmware are grouped according to the requested page
orientation, being either portrait or landscape.
Listed in the following tables are all the fonts available, along with their charater heights (expressed in
typographical dots) and spacings (expressed in characters per inch).
List of fonts for portrait page orientations in the PCL III+ emulation
Style Height Pitch
Courier 6 / 12 5 / 10 / 20 / 8.33 / 16,67 / 33.34
Courier italic 6 / 12 5 / 10 / 20
Letter Gothic 6 / 12 5 / 10 / 20 / 6 / 12 / 24
Gothic italic 6 / 12 6 / 12 / 24
Letter Gothic 4.75 / 9.5 8.33 / 16.67 / 33.34
Team Nordic 6 / 12 Proportional
Team Nordic italic 6 / 12 Proportional
BF Team 8 /10 / 12 / 14 Proportional
BF Team italic 8 /10 / 12 / 14 Proportional
Linea 8 /10 / 12 / 14 Proportional
Linea italic 10 / 12 Proportional
List of fonts for portrait page orientations in the PCL III+ emulation
Style Height Pitch
Courier 6 / 12 / 24 10 / 20 / 16.67 / 33.34
Courier italic 6 / 12 / 24 10 / 20
Letter Gothic 6 / 12 / 24 10 / 24
Letter Gothic 4.75 / 9.5 / 19 16.67 / 33.34
List of fonts for portrait page orientations in the IBM Proprinter X24 emulation
Style Height Pitch
Letter Quality 1 12 10 / 12 / 17.14
Letter Quality 2 12 10 / 12 / 17.14
Letter Quality 2 12 Proportional
List of fonts for portrait page orientations in the EPSON LQ 850 emulation
Style Height Pitch
Serif 12 10 / 12 / 15 / 17.14 / 20
Serif 12 Proportional
Serif italic 12 10 / 12 / 15 / 17.14 / 20
Serif italic 12 Proportional
Sans Serif 12 10 / 12 / 15 / 17.14 / 20
Sans Serif 12 Proportional
Sans Serif italic 12 10 / 12 / 15 / 17.14 / 20
Sans Serif italic 12 Proportional

1-6 681640J
1.5 OPTIONS
All the options can be installed directly by the user by following the instructions provided in the individual
packagings.
BATTERY PACK (BP 50/6 - BP 50/12)
As an alternative to using the AC/DC power supply and mains voltage, or batteries, the printer can also
be powered by a battery pack.
Twobatterypacksareavailable,eachofwhichareautomaticallyrecognizedonceinsertedintotheprinter:
- a12VoltNi-Cd (nichel-cadium) batterypackthatguaranteesanoperatingautonomy of approximately
80 pages;
- a 12 Volt Ni-MH (nichel and metal hydrate) battery pack that guarantees an operating autonomy of
approximately 140 pages.
UNIVERSAL AC/DC ADAPTER AND FAST CHARGER (GU 50)
With this adapter the printer can be connected to any electrical power supply providing a voltage ranging
between 98 and 254 Volts.
Through this adapter, an appropriate holder allows the fast charging of battery packs. Charge times are
approximately 40 minutes for the NiCd battery pack and approximately 1 hour for the NiMH battery pack.
CIGARETTE LIGHTER ADAPTER (CL 90)
By using the optional automobile adapter the printer can also be powered by the 12 Volts provided by the
automobile cigarette lighter. The battery packs can also be charged through this adapter. Charge times are
approximately 6 hours for the NiCd battery pack and 12 hours for the NiMH battery pack.
PARALLEL INTERFACE ERGONOMICAL CABLE (IC 50)
This special cable is used to connect the printer.
CK 90
Color kit
1.6 ACCESSORIES
Code 82077 F - Blister with: a refillable monochrome print head and three refills
Code 82078 S - Blister with: Two sets of three refills (total of six refills)
Code 84435 E - Blister with: single-block monochrome print head
Code B0039 H - Blister with: color print head and two refills
Code B0040 N - Color kit including a color print head and four refills
Code 82044 V - Printer cover

681640J 1-7 JP 90 - Service Manual
Fig. 1-3c - EXPLODED VIEW
OF THE PRINT HEAD
Fig. 1-3a - INK-JET PRINT
HEAD AND INK CARTRIDGE
Fig.1-3 Ink-Jet Print Head
1.7 INK-JET PRINT HEAD OPERATION
Ink-Jet Print Head:
Theink-jetprint head ismadeupofan interchangeable resinshellcontaining50nozzles and anelectrical
circuitry with 50 resistive heating elements (see Fig. 1-3a).
The nozzles are assembled on a nichel and gold compound referred to as electroformatted. They They
have a conical shape as shown in figure 1-3b.
The ink is contained in a disposable cartridge mounted inside the shell hosting the nozzles. The ink flows
tothenozzlesfromthecartridgethroughsmallchannelsintheprinthead'sresinlayer.Thislayeriselectrically
insulated from the resistive heating elements.
Each resistive heating element corresponds to a nozzle and is connected to the head's external electric
contacts.
NOZZLE
HEATINGELEMENT
140-150µm
50µm
HEATING ELEMENT -
NOZZLE PAD
FLEXIBLEELECTRIC
GRID
SPONGE OUT OF INK SENSOR
SUPPORTPLATE
COVER
INK PAD
Fig. 1-3b - NOZZLE CROSS
SECTION
OUT OF INK SENSOR
SUPPORTPLATE
SHELL

1-8 681640J
Ink-Jet Printing:
Each nozzle expels an ink bubble whenever an electrical signal is applied to the corresponding resistive
heating element for a few microseconds.
The small amount of ink that comes into contact with the resistive heating element the moment the
electrical signal is applied boils and begins to vaporize thus creating an ink bubble.
Astheinkbubblebeginstoexpand,itpushestheinkoutofthenozzleandontothepaper. This ink droplet
is expelled from the nozzle at a rate of about 15 m/sec.
Figure 1-4a/e shows the highlights of how an ink bubble is created and expelled from the nozzle.
When the resistive heating element is no longer energized and the ink droplet exits from the nozzle, new
ink from the cartridge replaces the ink that was expelled onto the paper.
A new signal can now be applied to the heating element so that another ink bubble can be created.
NOZZLE
HEATING
ELEMENT
Fig.1-4a
INITIALSTAGE
Fig.1-4e
NEW INK FROM THE CARTRIDGE REPLACES
THE DROPLET THAT HAS BEEN EXPELLED.
Fig.1-4d
THE INK BUBBLE BREAKS AND THE INK IS
PROPELLED ONTO THE PAPER.
Fig.1-4c
THE INK BUBBLE EXPANDS TO ITS
MAXIMUMSIZE.
Fig.1-4b
AN ELECTRICAL SIGNAL IS APPLIED TO
THE HEATING ELEMENT AND AN INK
BUBBLE IS CREATED.
THE INK EXITS FROM THE NOZZLE.
Fig.1-4 Creation of an Ink Droplet
INK

681640J 1-9 JP 90 - Service Manual
GROUP A (12)GROUP B (13)
GROUP C (13)GROUP D (12)
Fig.1-5 Nozzle Matrix
Print Nozzles:
A total of 50 print nozzles are arranged on two rows of 25 nozzles each. In each row the nozzles are
sequentially placed on each column as shown in figure 1-5.
The matrix also includes:
- Dampning/balancing nozzles A,C and B,D for the outermost 2, 50 and 1, 49 nozzles.
- Ink cartridge balancing nozzles E and L.
(4.23 mm)

1-10 681640J
Information on the Heating Element's Activation Circuitry
The heating elements are divided into four groups. Two groups have 12 elements, the other two groups
have 13. Only one element can be activated at each time in each group, and therefore no more than four
elements can be activated simultaneously.
To avoid induction between adjcent elements, each element will be activated according to a specific
sequence (Fig. 1-6).
Each group of heating elements is controlled by an 18.8 V driver circuit. This voltage must be regulated
in order to guarantee correct print head operation.
The most typical faults that can occur with lower voltages are the following: lack of ink bubble expulsion
if the print head is not used for a determined period of time, lack of ink bubble expulsion in low temperatures.
Higher voltages, on the other hand, can cause the generation of incorrect ink bubble control commands or
no command at all due to the possible deterioration of the heating element.
.
Cleaning and Servicing the Ink-Jet Print Head
The ink-jet print head demands special care as far as nozzle cleaning is concerned.
Given their particular structure, dust or the drying-out of exposed ink can easily clog the nozzles.
Fig.1-6 Activation Sequence of the Heating Elements
HEATINGELEMENTACTIVATION
COMMAND

681640J 1-11 JP 90 - Service Manual
Listed below are some useful tips that will guarantee the optimum use of the print head:
- Remove the print head from its sealed container only when you are about to install it in the printer. The
print head has an 18-month warranty if stored in a sealed container, otherwise the warranty is reduced
to about six months (both warranty periods are cumulative).
- Never rest the print head on its nozzle or electric contact sides. Never rest the head on heat sources, air
conditioners, nor on dirty or dusty surfaces.
- If necessary (when the nozzles are clogged), run the nozzle cleaning function (turn to section 7.1).
This function forces ink through the nozzles to clear the passages, and will have to be run whenever one
or more nozzles clog.
- After a print job, tightly seal the nozzle bay so the nozzles are protected against dust and to avoid the inlk
fromdrying-out when exposedfora certainperiodof time. Sinceonthe JP 90thisoperation iscarriedout
automaticallyafterafew minutes ofprinterinactivity,waitafewseconds before poweringoffthemachine
after a print job.
If a blackout occurs while the printer is on, power off the printer and manually push the print head to its
farthest right-hand position.
Note: Ifafter a printjobthepersonal computerispoweredoff before theprinter,the printer willresetitself.
If the printer is powered off during its reset phase, chances are that the print head may come to a
stop outside of its parking position.
It is therefore suggested to power off the printer before the personal computer.
1.8 COLOR INK-JET PRINT HEAD OPERATION
Color Ink-Jet Print Head
Thecolorink-jetprintheadismadeupofaninterchangeablesealedshellcontaining51printnozzles,three
liquid ink cartridges (one for each major color) and an electrical circuitry with 51 resistive heating elements
(see Fig. 1-7a).
The nozzles are divided among the three major colors as follows:
- Yellow: 18 nozzles
- Magenta: 17 nozzles
- Light blue: 16 nozzles
The nozzles are constructed in the same way as the ones on the monochrome ink-jet print head. They
are assembled on a nichel and gold compound referred to as electroformatted, and have a conical shape as
shown in figure 1-7b.
The ink is contained in three cartridges, one for each color.
A sponge inside each cartridge prevents the ink from being shaken during print head movements. This
avoidsproblemsduringcarriagetranslations,avoidstheinkfromleakingoutofthebleedholesandtheforming
of froth.
Theinkflowstothenozzlesthrough small channels inthe printhead'sresinlayer.Thislayeriselectrically
insulated from the heating elements.
Each heating element corresponds to a nozzle and is connected to the head's external electric contacts.

1-12 681640J
Fig. 1-7a - COLOR INK-JET
PRINT HEAD + CARTRIDGE
Fig. 1-7b - NOZZLE CROSS
SECTION
50µµ
µµ
µm
140-150µµ
µµ
µm
NOZZLE
HEATING ELEMENT -
NOZZLE PAD
FLEXIBLEELECTRIC
GRID
Fig. 1-7c - EXPLODED VIEW
OF THE PRINT HEAD
INK SPONGES
Fig. 1-7 Color Print Head
HEATING
ELEMENT
INK CARTRIDGE
SHELL
COVER

681640J 1-13 JP 90 - Service Manual
Ink-Jet Printing
Turn to section 1.8 for a full explanation on ink-jet printing.
Print Nozzles
A total of 51 print nozzles are arranged on two vertical rows of 25 and 26 nozzles and are divided
horizontally in three groups, one for each color.
Figure 1-8 shows how the nozzles are placed on each row.
YELLOWMAGENTABLUE
2
4
6
8
1
3
5
7
19
21
23
25
20
22
24
26
45
47
49
51
44
46
48
50
Fig.1-8 Nozzle Matrix
Information on the Heating Element Activation Circuitry
Theheatingelementsaredividedintofourgroups.Twogroupshave12elementsandtheothertwogroups
have 13. Only one element can be activated at each time in each group, and therefore no more than four
elements can be activated simultaneously.
To avoid induction between adjacent elements, each element will be activated according to a specific
sequence (see figure 1-9).
Each group of heating elements is controlled by an 18.8 V driver circuit. This voltage must be regulated
in order to guarantee correct print head operation.
The most typical faults that may occur with lower voltages are the following: lack of ink bubble expulsion
if the print head is not used for a determined period of time, lack of bubble expulsion in low temperatures.
Higher voltages, on the other hand, can cause the generation of incorrect ink bubble control commands
or no command at all due to the possible deterioration of the heating element.

1-14 681640J
Cleaning and Servicing the Color Ink-Jet Print Head
Also the color ink-jet print head demands special care as far as nozzle cleaning is concerned.
Given their particular structure, dust or the drying-out of exposed ink can easily clog the nozzles.
Listed below are some useful tips that will guarantee the optimum use of the print head:
- Remove the print head from its sealed container only when you are about to install it in the printer. The
printheadhasan18-monthwarrantyifstoredinitsownsealedcontainer,otherwisethewarrantyisreduced
to six months (both warranty periods are cumulative).
- Neverrestthe print headonitsnozzleor electric contactsides.Neverrestthe print headonheatsources,
air conditioners, nor on dirty or dusty surfaces.
- Afterinstallingthenewcolorprinthead,theprinterwillautomaticallyrunanozzlebleedcycleandtherefore
the nozzle cleaning procedure is not carried out on the color print head.
- After a print job, tightly seal the nozzle bay so the nozzles are protected against dust and to avoid the ink
from drying-out when exposed for a certain period of time.
Since on the JP 90 this operation is carried out automatically after a few seconds of printer inactivity, wait
a few seconds before powering off the machine after a print job.
Ifalinevoltagefailureoccurswhiletheprinterison,powerofftheprinterandmanuallypushtheprinthead
to its farthest right-hand position.
- Whenever removing the color print head from the printer, make sure to store it in the service container
supplied with the color kit. This will ensure that the ink on the print head does not dry-out.
51
49,50
Fig. 1-9 Activation Sequence of the Heating Elements
HEATINGELEMENTCOMMAND