ENCAD NovaJet 800 Series User manual

NovaJet®8-Head Family
Service Manual
NovaJet
800 Series

NOVAJET®
800 Series
Color Inkjet Printer
Service Manual
PartNumber216520-01
®

iii
NovaJet800SeriesServiceManual
Copyright Eastman Kodak Company, 2002
KODAK, ENCAD®, VinylJet®, VinylJet®, CADJET®,
ExtremeColorPrinting™,andGraphicOutdoorMatched
System™ (GO) are trademarks ofEastman Kodak
Company.
Othertrademarksandregisteredtrademarksarethe
propertyoftheirrespectiveowners.
No part of this manual may be copied or distributed,
transmitted, transcribed, stored in a retrieval system, or
translated in any human or computing language, in any
formor by anymeans, electronic, mechanical,magnetic
or otherwise, or disclosed to a third party without the
express written permission of:
Encad, Inc., 6059 Cornerstone Court West, San Diego,
CA92121,U.S.A.
CertainmanualsdevelopedbyENCADareinanelec-
tronic format to be distributed on CDs or over the
internet. The registered user of an ENCAD product
whose manual is distributed in this fashion may print one
copy for their personal use only.
Printing history
1st Edition RevADecember2000
2ndEdition RevB June 2002

iv
NovaJet800 Series ServiceManual
FCC Statement (U.S.A.)
TheUnited States Federal Communications Commision
has specified that the following notice be brought to the
attention of the users of theNOVAJET 800 series printers.
FEDERALCOMMUNICATIONSCOMMISIONRADIOAND
TELEVISIONINTERFERENCE FORCLASSBDEVICE
This equipment has been tested and found to comply with
the limits for a class A digital device, pursuant to part 15
ofthe FCC Rules. These limits are designed to provide
reasonableprotection against harmful interference in a
residentialinstallation. This equipment generates, uses,
andcanradiateradiofrequencyenergyand,if not in-
stalled and used in accordance with the instructions, may
causeharmful interference to radio communications.

v
NovaJet800 Series ServiceManual
User Instructions:
Iftheequipmentdoes cause harmful interference to radio
ortelevision reception, whichcan be determinedby
turning the equipment off and on, the user is encouraged
to try to correct the interference by one of the following
measures:
−Reorientorrelocatethe receiving antenna.
−Increasetheseparation between the equipmentand
receiver.
−Connect the equipment into an outlet on a circuit
differentfrom that to which the receiver is connected.
−Consultthedealer or an experienced radio/TV
technicianforhelp.
Changesormodifications not expressly approved by
ENCAD, Inc. could void the user’s authority to operate the
equipment.

vi
NovaJet800 Series ServiceManual
VDE Statement
Hiermit wird bescheinigt, daß dieNOVAJET 800 Serie
vonDruckerinÜbereinstimmungmitdenBestimmungen
der BMPT-AmstbIVfg 234/1991 funkentstört ist. Der
vorschriftsmäßigeBetrieb mancher Geräte (z.B.
Meßsender)kannallerdingsgewissenEinschränkungen
unterliegen. BeachtenSie deshalb die Hinweise in der
Bedienungsanleitung.
DemZentralamtfürZulassungenim Fernmeldewesen
würdedanInverkehrbringen dieses Gerätes angezeigt und
dieBerechtigungzurÜberprüfungder Serie auf die
Einhaltung der Bestimmungen eingeräumt.
ENCAD, Inc. U.S.A

vii
NovaJet800 Series ServiceManual
Material Safety Data Sheet
ENCAD QIS(QualityImaging Supplies) ink isnonhazard-
ous, requiring no special disposal handling. It can be
harmful if swallowed and should be kept away from
children.
To obtain a Material Safety Data Sheet, contactENCAD,
Inc. at:
6059CornerstoneCourt West
SanDiego, CA 92121-3734
[phone]
Internationalusers should contacttheir local dealeror
distributor.

viii
NovaJet800 Series ServiceManual
Warranty or Damage Claims
United States
ENCAD®, Inc., warrants itsprinters ("PRODUCT") to be free from defects in
workmanshipand materials for a period of one year from the date of
purchase. In order to submit a Warranty claim, please contact the
ENCADHelp Desk at [phone].
ENCADreserves the right to make changes or improvementsto Products,
without incurring any obligation to similarly alter Products previously
purchased.
Buyer's sole and exclusive rights pursuant to this Warranty shall be for the
repairor replacement of defective Product. ENCAD specifically disclaims
any and all other warranties, expressed or implied, including but not limited
to,implied warranties of merchantability and fitness for a particular pur-
pose. In no event shall ENCAD be liable for any loss of profit or other
commercialdamages, special, incidentalor consequential damages,or
anyotherdamagesorclaims, whatsoever.
This Warranty gives Buyer specific legal rights, and Buyer may also have
other rights that vary from state to state.
ThisWarranty applies only to printers purchased from ENCAD, or autho-
rized ENCAD distributors or dealers. The intent of this Warranty is to
repairor replace defective Products subjected to normal wearand tear,
when operated according to ENCAD instructions.

ix
NovaJet800 Series ServiceManual
Table of Contents
Chapter 1 General Description .......................................1-1
Introduction .................................................................................. 1-1
Overview ....................................................................................... 1-3
Related Publications ..................................................................... 1-3
Electrostatic Discharge (ESD) Sensitivity ...................................... 1-3
Warnings,Cautionsand Notes...................................................... 1-4
PrinterSpecifications .................................................................... 1-5
Contentsof this Service Manual .................................................... 1-6
Technical Support ......................................................................... 1-8
Chapter 2 Theory of Operation.......................................2-1
Introduction .................................................................................. 2-1
NovaJet800Series Printers General Block Diagram ...................... 2-2
Paper(Media)AxisDrive............................................................... 2-4
TheCarriageAxisDrive ................................................................. 2-5
MediaFeedand Take-Up System.................................................. 2-6
MainPWA(PrintedWiringAssembly) ........................................... 2-7
Main PWA LED Status Indicators............................................ 2-8
Microprocessor (CPU) ............................................................ 2-8
GateArray ............................................................................. 2-9
DigitalSignalProcessor (DSP) ............................................... 2-9
Memory Circuits ................................................................... 2-10
Flash EEPROM ............................................................. 2-10
SDRAM ......................................................................... 2-11
Serial EEPROM ............................................................. 2-11
StepperMotorController ....................................................... 2-11
ServoMotorController .......................................................... 2-13
InterfaceCircuits:Serial&Parallel ........................................ 2-15

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NovaJet800 Series ServiceManual
Table of Contents (cont)
Chapter 3 Maintenance ...................................................3-1
Introduction .................................................................................. 3-1
ScheduledMaintenance................................................................ 3-1
CleaningProcedures .............................................................. 3-2
External Cleaning ............................................................. 3-2
Slide Shaft Cleaning ......................................................... 3-2
Service Station Cleaning ................................................... 3-3
Linear EncoderStripCleaning ........................................... 3-4
TrailingCablesCleaning ................................................... 3-5
Platen/VacuumHoleCleaning........................................... 3-5
CartridgeDimplesCleaning .............................................. 3-6
Flex Cable Contact Cleaning ............................................ 3-7
Clean and Inspect Stepper Motor Gears ............................ 3-8
Clean and Inspect Main PWA........................................... 3-8
CleanandInspectCarriageAssembly............................... 3-8
DryerCleaning ................................................................. 3-9
Reseat Connectors on Main PWA and Carriage Boards ........... 3-9
ReplaceTrailingCables ........................................................ 3-12
ReplaceCarriageCover/CarriageBushings............................ 3-13
ServoMotor WindingResistance Check ...................................... 3-14
Stepper Motor WindingResistance Check ................................... 3-15
PowerFeedand Take-Up Motor Winding Resistance Check......... 3-16
Banding:Hardwarevs Software ................................................... 3-16
BandingDifferences.............................................................. 3-17
Banding Causes & Quick Analysis........................................ 3-19
HorizontalBandingProblems.......................................... 3-19
Vertical Banding Problems.............................................. 3-22
Line Quality Problems (Overspray) .................................. 3-23
Alignments/Adjustments............................................................. 3-24
Slide ShaftProfile Adjustment ............................................... 3-24
HeadHeightAlignmentProcedure ......................................... 3-27
ColorCalibration ................................................................... 3-31
DeadbandAlignments ........................................................... 3-34
ColorDeadbandAlignment.............................................. 3-37
PaperAxisCalibration .......................................................... 3-39
Diagnostics Menu ....................................................................... 3-40
FirmwareDownload/UpgradingforthePC .................................... 3-43
FirmwareDownload/Upgrading for theMAC ................................. 3-44
InternalCablingandSignalFlow Diagrams .................................. 3-45

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NovaJet800 Series ServiceManual
Table of Contents (cont)
Chapter 4 Troubleshooting.............................................4-1
Introduction .................................................................................. 4-1
NoPower ............................................................................... 4-1
NoPower ............................................................................... 4-2
Initialization Failure ................................................................. 4-2
MediaDoesNot Move............................................................. 4-3
InternalERROR“CarriageAxisFailure” ................................... 4-4
InternalERROR “Encoder SensorFailure” ............................... 4-5
Internal ERROR “Paper Sensor Failure” ................................... 4-6
InternalERROR...................................................................... 4-6
Auto-Load Paper Sensor Failure” ............................................ 4-6
InternalERROR“MPCBFailure” ............................................. 4-7
UnrecognizedCartridgesError ................................................ 4-7
MediaSen Ref. PtsNot Initialized (NJ880only) ....................... 4-8
ImageSkewsor Moves........................................................... 4-8
Does Not Print ....................................................................... 4-8
Ink Cartridge Misfiring ............................................................. 4-9
PaperSkewing ..................................................................... 4-10
PrinterOutput is Banding (Horizontal) ................................... 4-10
Printer Output is Banding (Vertical) ....................................... 4-12
Printer Output is Banding (Horizontally and Vertically) ........... 4-12
KeypadLocked-UporNot Functioning Properly..................... 4-13
NoisyOperation ................................................................... 4-13
LineQualityDegraded .......................................................... 4-14
Fan Does Not Power Up ....................................................... 4-16
MediaTake-UpMotor Not Operating, Sensor Works ............... 4-16
Media Feed Motor Not Operating, Sensor Works................... 4-17
MediaFeedand Take-Up Motors NotOperating,
BothSensorsWorking.......................................................... 4-17
MediaFeedor Take-Up Sensor(s) NotOperating ................... 4-17
Print Quality Issues .............................................................. 4-19
CartridgeMisfires(Intermittent Banding) ................................ 4-19
Failure Analysis - Print Misfires............................................ 4-20
CommonMisfireProblems.............................................. 4-25
ClearingCartridgeMisfires.............................................. 4-26
MultipleCartridgeFailures .............................................. 4-26

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NovaJet800 Series ServiceManual
Table of Contents (cont)
Chapter 4 Troubleshooting (cont)
Microbanding............................................................. 4-28
BandingDifferences................................................... 4-30
Horizontal Banding .................................................... 4-31
Vertical Banding ........................................................ 4-43
LineQualityProblems (Overspray) ............................. 4-46
CartridgeWarranty .................................................... 4-47
CartridgeMaintenance& Testing................................ 4-48
InkStarvation............................................................. 4-52
InkDropout ............................................................... 4-57
ColorTest Problems .................................................. 4-60
“UnrecognizedCartridge”Error Message .................... 4-63
PaperSensorError.................................................... 4-65
EncoderSensorError ................................................ 4-68
AutoLoadPaperSensor Error .................................... 4-69
CarriageAxisError .................................................... 4-70
Initialization Failure ................................................ 4-75
MediaSensorReference Points Not Initialized........... 4-79
HardwareFailures/DiagnosticTests............................ 4-79
DryerFailure/SensorError ......................................... 4-81
IntermittentProblems/Continuity ................................ 4-86
ReinitializingthePrinter ............................................. 4-95
Printer Hesitation/Networking Problems...................... 4-96
ParallelPortTest ..................................................... 4-100
FirmwareDownloadingProcedures........................... 4-101
NJ850Printer .......................................................... 4-101
NJ880Printer .......................................................... 4-102
Media Handling System Failure................................ 4-104

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NovaJet800 Series ServiceManual
Table of Contents (cont)
Chapter 5 Assembly\Disassembly................................5-1
Introduction .................................................................................. 5-1
RemovetheLeft,Top,andRightCovers......................................... 5-2
Removethe E-ConnectNetworkAssembly .................................... 5-6
InstalltheE-ConnectNetworkAssembly ....................................... 5-7
Remove the Keypadand Display ................................................... 5-8
Install the Keypad and Display ...................................................... 5-9
RemoveMemoryModule............................................................. 5-10
Install Memory Module................................................................ 5-11
RemovetheMainPrintedWiringAssembly(PWA) ...................... 5-11
InstalltheMain Printed Wiring Assembly (PWA) ......................... 5-14
RemovePower Supply, Cooling Fan, and AC Entry Module .......... 5-15
InstallthePower Supply, Cooling Fan, and ACEntry Module........ 5-17
RemoveServoMotor ................................................................... 5-18
Install Servo Motor ...................................................................... 5-20
RemovetheInkDeliverySystem ................................................. 5-21
Install the Ink Delivery System .................................................... 5-23
RemovetheCarriage Assembly, Carriage Belt, and theFrame
Tensioner.................................................................................... 5-23
Installthe Carriage Assembly, Carriage Belt, and the
FrameTensioner ......................................................................... 5-28
RemovetheCarriage PWA.......................................................... 5-31
Install the Carriage PWA............................................................. 5-33
Remove the Paper Sensor or the Encoder Sensor........................ 5-34
Install the Paper Sensor or the Encoder Sensor ........................... 5-36
Replacingthe Floating Carriage Cover Bushings .......................... 5-37
ReplacingtheCarriage Bushings................................................. 5-39
Remove the Service Station ......................................................... 5-40
Install the Service Station ............................................................ 5-41
RemovetheTrailingCableAssembly ........................................... 5-41
Installthe TrailingCableAssembly .............................................. 5-42
RemovetheStabilizer Bracket and Encoder Strip......................... 5-43
Installthe Stabilizer Bracket and Encoder Strip............................ 5-44
RemovetheY-ArmAssembly,PinchRollers,SlideShaft,and
AutoLoad Sensor ........................................................................ 5-44
Install the Y-Arm Assembly, Pinch Rollers, Slide Shaft,
andAutoLoadSensor.................................................................. 5-47
RemovetheGap Sensor (NovaJet 880only)................................. 5-48

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NovaJet800 Series ServiceManual
Table of Contents (cont)
Chapter 5 Assembly\Disassembly (cont)
RemovetheLowerRollerAssembly, Stepper Motor and
VacuumFan(NovaJet 850).......................................................... 5-48
Installthe Lower Roller Assembly, StepperMotor and
VacuumFan(NovaJet 850).......................................................... 5-51
RemovetheLowerRollerAssembly, Stepper Motor and
VacuumFan(NovaJet 880).......................................................... 5-54
LowerRollerInstallationTip(NovaJet880) ................................... 5-57
Y-ArmAssemblyInstallationTip(NovaJet880)............................. 5-57
RemovetheMediaTake-UpandFeedSensorBracketsand
Sensors ..................................................................................... 5-58
InstalltheMedia Take-Up and Feed Sensor Brackets and
Sensors ..................................................................................... 5-59
RemovetheMediaTake-UpandFeedMotors .............................. 5-60
InstalltheMedia Take-Up and Feed Motors ................................. 5-60
RemovetheThermalDryerAssembly .......................................... 5-61
InstalltheThermalDryerAssembly ............................................. 5-62
Removethe ThermalDryerRightEndcap Assembly..................... 5-62
InstalltheThermalDryerRightEndcapAssembly............................5-
64Assembly\Disassembly............................................................. 5-1
Introduction .................................................................................. 5-1
RemovetheLeft,Top,andRightCovers......................................... 5-2
Removethe E-ConnectNetworkAssembly .................................... 5-6
InstalltheE-ConnectNetworkAssembly ....................................... 5-7
Remove the Keypadand Display ................................................... 5-8
Install the Keypad and Display ...................................................... 5-9
RemoveMemoryModule............................................................. 5-10
Install Memory Module................................................................ 5-11
RemovetheMainPrintedWiringAssembly(PWA) ...................... 5-11
InstalltheMain Printed Wiring Assembly (PWA) ......................... 5-14
RemovePower Supply, Cooling Fan, and AC Entry Module .......... 5-15
InstallthePower Supply, Cooling Fan, and ACEntry Module........ 5-17
RemoveServoMotor ................................................................... 5-18
Install Servo Motor ...................................................................... 5-20
RemovetheInkDeliverySystem ................................................. 5-21
Install the Ink Delivery System .................................................... 5-23

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NovaJet800 Series ServiceManual
Chapter 5 Assembly\Disassembly (cont)
RemovetheCarriage Assembly, Carriage Belt, and theFrame
Tensioner.................................................................................... 5-23
Installthe Carriage Assembly, Carriage Belt, and the
FrameTensioner ......................................................................... 5-28
RemovetheCarriage PWA.......................................................... 5-31
Install the Carriage PWA............................................................. 5-33
Remove the Paper Sensor or the Encoder Sensor........................ 5-34
Install the Paper Sensor or the Encoder Sensor ........................... 5-36
Replacingthe Floating Carriage Cover Bushings .......................... 5-37
ReplacingtheCarriage Bushings................................................. 5-39
Remove the Service Station ......................................................... 5-40
Install the Service Station ............................................................ 5-41
RemovetheTrailingCableAssembly ........................................... 5-41
Installthe TrailingCableAssembly .............................................. 5-42
RemovetheStabilizer Bracket and Encoder Strip......................... 5-43
Installthe Stabilizer Bracket and Encoder Strip............................ 5-44
RemovetheY-ArmAssembly,PinchRollers,SlideShaft,and
AutoLoad Sensor ........................................................................ 5-44
Install the Y-Arm Assembly, Pinch Rollers, Slide Shaft, and
AutoLoad Sensor ........................................................................ 5-47
RemovetheGap Sensor (NovaJet 880only)................................. 5-48
RemovetheLowerRollerAssembly, Stepper Motor and
VacuumFan(NovaJet 850).......................................................... 5-48
Installthe Lower Roller Assembly, Stepper Motor and Vacuum
Fan (NovaJet850) ....................................................................... 5-51
RemovetheLowerRollerAssembly, Stepper Motor and
VacuumFan(NovaJet 880).......................................................... 5-54
LowerRollerInstallationTip(NovaJet880) ................................... 5-57
Y-ArmAssemblyInstallationTip(NovaJet880)............................. 5-57
RemovetheMediaTake-UpandFeedSensorBracketsand
Sensors ..................................................................................... 5-58
InstalltheMedia Take-Up and Feed Sensor Brackets and
Sensors ..................................................................................... 5-59
RemovetheMediaTake-UpandFeedMotors .............................. 5-60
InstalltheMedia Take-Up and Feed Motors ................................. 5-60
RemovetheThermalDryerAssembly .......................................... 5-61
InstalltheThermalDryerAssembly ............................................. 5-62
Removethe ThermalDryerRightEndcap Assembly..................... 5-62
InstalltheThermalDryerRightEndcapAssembly........................ 5-64
Table of Contents (cont)

xvi
NovaJet800 Series ServiceManual
Chapter 6 Parts List........................................................6-1
Table of Contents (cont)

xvii
NovaJet800 Series ServiceManual
List of Illustrations
Figure Page
Chapter 1 General Description
1-1. NovaJet800 Series InkjetPrinter ................................................. 1-1
Chapter 2 Theory of Operation
2-1. General Block Diagram. .............................................................. 2-3
2-2. Paper(Media) AxisDrive. ............................................................ 2-4
2-3. CarriageAxisDrive. ..................................................................... 2-5
2-4. PowerFeed and Take-Up System................................................ 2-6
2-5. MainPWA(Printed Wiring Assembly).......................................... 2-7
2-6. GateArray. ................................................................................. 2-9
2-7. StepperMotorController. ........................................................... 2-11
2-8. Servo Motor Controller. .............................................................. 2-13
2-9. QuadratureSignal Generation.................................................... 2-14
2-10. InterfaceCircuits. .................................................................... 2-15
2-11. Carriage AssemblyCircuits. ..................................................... 2-16
2-12. Main Menu. ............................................................................. 2-18
Chapter 3 Maintenance
3-1. Encoder Strip Cleaning. ............................................................... 3-4
3-2. Cartridge Dimple Region. ............................................................. 3-6
3-3. Flex Cable Contacts.................................................................... 3-7
3-4. MainPWA Connection Locations............................................... 3-10
3-5. Carriage PWA Connection Locations. ........................................ 3-11
3-6. Ribbon Connector Locking Mechanism. ..................................... 3-12
3-7. ServoMotor............................................................................... 3-14
3-8. Stepper Motor. .......................................................................... 3-15
3-9. PowerFeed and Take-Up Motor. ................................................ 3-16
3-10. Examples of Horizontal Banding. ............................................. 3-17
3-11. DialGaugeMicrometerAssembly. ........................................... 3-25
3-12. MeasurementPositionsfor Slide Shaft..................................... 3-26
3-13. SlideShaftProfileAdjustment.................................................. 3-27
3-14. CarriageHeadHeightTolerance. .............................................. 3-28
3-15. SettingUp Tools from Height Gauge Kit. ................................. 3-28
3-16. Zeroing theMicrometer Gauge. ................................................ 3-29
3-17. TestCartridgeInstalled. ........................................................... 3-29
3-18. Vert. andHoriz.Color Calibration. ............................................ 3-32
3-19. Utility Menu. ........................................................................... 3-33

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NovaJet800 Series ServiceManual
List of Illustrations (cont)
Figure Page
Chapter 3 Maintenance (cont.)
3-20. ColorCalib Menu..................................................................... 3-33
3-21. VerticalOptions Menu. ............................................................ 3-34
3-22. Slow Deadband. ...................................................................... 3-35
3-23. Service Menu. ......................................................................... 3-36
3-24. Calibration (Deadband) Menu. .................................................. 3-36
3-25. Calibration Menu. .................................................................... 3-37
3-26. Color Db Menu. ....................................................................... 3-38
3-27. Paper Axis Test....................................................................... 3-40
3-28. Diagnostics Menu. .................................................................. 3-41
3-29. Accessory Menu. .................................................................... 3-41
3-31. CarriagePWAConnectionsDiagram........................................ 3-46
3-32. LegHarnessConnections Diagram. ......................................... 3-47
Chapter 4 Troubleshooting
4-1. CartridgeMisfire. ..................................................................... 4-19
4-2. Excessive Ink Pressure. .......................................................... 4-20
4-3. DirtyServiceStation. ............................................................... 4-21
4-4. SeptumandValves. ................................................................. 4-21
4-5. UnseatedFlexDriver Cable. ..................................................... 4-22
4-6. SeptumConnector. .................................................................. 4-22
4-7. DamagedFlexDriverCable. ..................................................... 4-23
4-8. DefectiveTrailingCable. ........................................................... 4-23
4-9. Unseatedor Defective Trailing Cable......................................... 4-24
4-10. DefectiveCarriage PWA. ......................................................... 4-24
4-11. StallConfiguration.................................................................... 4-25
4-12. MagentaCartridge Misfires. ..................................................... 4-25
4-13. AdjacentJetMisfire(Cyan). ..................................................... 4-26
4-14. Service Station. ....................................................................... 4-27
4-15. DefectiveCartridgePowerLines. .............................................. 4-27
4-16. Catastrophic Jet Failure. ........................................................... 4-28
4-17. PowerLineFailure. .................................................................. 4-28
4-18. Address Line Failure. ............................................................... 4-28
4-19. MultipleAddressLineFailure. .................................................. 4-28
4-20. Microbanding. .......................................................................... 4-29
4-21. Quality Print Modes. ................................................................ 4-29
4-22. InkCartridgeConfigurations. .................................................... 4-30
4-23. DefectiveMagentaCartridge..................................................... 4-31
4-24. AutoWipeInterference. ............................................................ 4-32
4-25. ImproperGrounding. ................................................................ 4-32

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NovaJet800 Series ServiceManual
List of Illustrations (cont)
Figure Page
Chapter 4 Troubleshooting (cont)
4-26. Unseated orDefective TrailingCables. ...................................... 4-33
4-27. ESD Problems. ........................................................................ 4-34
4-28. DefectiveCarriagePWAs......................................................... 4-34
4-29.CarriageHead Strike. ............................................................... 4-35
4-31. LowDataTransfer Problem. ..................................................... 4-35
4-32.Test Print. ................................................................................ 4-36
4-33.MisfiringJet.............................................................................. 4-36
4-34.DefectiveCarriagePWA (Color Test). ........................................ 4-37
4-35.DefectiveStepperMotor. ........................................................... 4-37
4-36.DefectiveStepperMotor. ........................................................... 4-38
4-37.ServoSystemSynchronizationFailure. ..................................... 4-39
4-38.RIPError. ................................................................................. 4-39
4-39.ConnectivityProblem . .............................................................. 4-40
4-40. Dirty orDefective EncoderStrip. ............................................... 4-40
4-41.MainPWA Failures. ................................................................. 4-41
4-42.RIPProblem. ........................................................................... 4-42
4-4. BentServoMotor Pulley........................................................... 4-42
4-44. Dirty or Worn Carriage Bushings. ............................................. 4-43
4-45. Worn Bushings or Bushing Pads. ............................................ 4-43
4-46. DefectiveTrailingCable Examples............................................ 4-44
4-47. Dirty Encoder Strip. ................................................................. 4-45
4-48. DefectiveTeflonStrip. .............................................................. 4-45
4-49. RIP Error (Page Layout Violation)............................................. 4-46
4-50. ESDProblem. ......................................................................... 4-47
4-51. Jet Out Detection. ................................................................... 4-48
4-52. CartridgeCleaning. .................................................................. 4-50
4-53. ServiceStationCleaning. ......................................................... 4-51
4-54. Magenta Ink Pressure Failure. ................................................. 4-52
4-55. Ghosting. ................................................................................ 4-53
4-56. CartridgeTubing Needle andSeptum. ...................................... 4-54
4-57. 208Jet Cartridge. .................................................................... 4-55
4-58. EasyPrime Operation. ............................................................. 4-55
4-59. Reservoirsand Ink DeliverySystem.......................................... 4-56
4-60. Excessive Ink Pressure. .......................................................... 4-57
4-61. Excessive Ink PreHeat Settings. .............................................. 4-58
4-62. DirtyServiceStation Problem................................................... 4-60

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NovaJet800 Series ServiceManual
List of Illustrations (cont)
Figure Page
Chapter 4 Troubleshooting (cont)
4-63. Normal Color Test (3 Pass)...................................................... 4-61
4-64. AbnormalTest Examples. ........................................................ 4-61
4-65. Cartridge Tubing Needle and Septum. ...................................... 4-62
4-66. Ink Starvation. ......................................................................... 4-63
4-67. CartridgeIdentification Chip. .................................................... 4-64
4-68. Flex Driver Cable. .................................................................... 4-65
4-69. Paper Sensor. ......................................................................... 4-66
4-70. PaperSensor Location. ........................................................... 4-68
4-71. EncoderSensor. ..................................................................... 4-68
4-72. AutoLoadPaperSensor. .......................................................... 4-70
4-73. CarriageHeadAssembly. ......................................................... 4-71
4-74. ServoCycle/PWMMenu. ......................................................... 4-71
4-75. Dirty or Defective Encoder Strip................................................ 4-72
4-76. Main PWATrailingCable Connection. ...................................... 4-74
4-77. Boot ROM Access Function. ................................................... 4-75
4-78. Main PWA LED Operation. ...................................................... 4-76
4-79. Memory Module. ..................................................................... 4-76
4-80. Paper Sensor. ......................................................................... 4-78
4-81. Main PWA LED Operation. ...................................................... 4-79
4-82. FunctionalProblem................................................................. 4-80
4-83. ConnectivityProblem............................................................... 4-80
4-84. ESD Problem. ......................................................................... 4-81
4-85. Main PWA Humidity Sensor..................................................... 4-82
4-86. Dryer LEDs. ............................................................................ 4-85
4-87. DryerConnectivity. .................................................................. 4-85
4-88. InternalTest Print. ................................................................... 4-86
4-89. SEHActivated Test Pattern...................................................... 4-87
4-90. E-Connect LEDs. .................................................................... 4-87
4-91. Driver/RIPProblem. ................................................................. 4-88
4-92. InadaquateNetworkDataTransferRate................................... 4-88
4-93. ESD Problems. ....................................................................... 4-89
4-94. Servo Cycle/PWM Menu. ........................................................ 4-90
4-95. Carriage Bushings. ................................................................. 4-90
4-96. ServoSystem Synchronization Error. ...................................... 4-91
4-97. ProbableDefective Main PWA. ............................................... 4-91