How it Works
Kodak
Loading...
800
User Manual
288 pgs7.73 Mb0
User Manual
16 pgs235.28 Kb0
Instruction Manual [fr]
10 pgs3.17 Mb1
Table of contents
Loading...

Kodak 800 User Manual

NovaJet® 8-Head Family
NovaJet 800 Series
Service Manual
®
NOVAJET®
800 Series
Service Manual
Part Number 216520-01
NovaJet 800 Series Service Manual
Copyright Eastman Kodak Company, 2002
®
KODAK, ENCAD
, VinylJet®, VinylJet®, CADJET®, Extreme Color Printing™, and Graphic Outdoor Matched System™ (GO) are trademarks of Eastman Kodak Company. Other trademarks and registered trademarks are the property of their respective owners. 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 form or by any means, 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, CA 92121, U.S.A.
Certain manuals developed by ENCAD are in an elec­tronic 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 Rev A December 2000 2nd Edition Rev B June 2002
iii
FCC Statement (U.S.A.)
The United States Federal Communications Commision has specified that the following notice be brought to the attention of the users of the NOVAJET 800 series printers.
FEDERAL COMMUNICATIONS COMMISION RADIO AND TELEVISION INTERFERENCE FOR CLASS B DEVICE
This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not in­stalled and used in accordance with the instructions, may cause harmful interference to radio communications.
NovaJet 800 Series Service Manual
iv
User Instructions:
If the equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one of the following measures:
− Reorient or relocate the receiving antenna.
− Increase the separation between the equipment and
receiver.
− Connect the equipment into an outlet on a circuit
different from that to which the receiver is connected.
− Consult the dealer or an experienced radio/TV
technician for help.
Changes or modifications not expressly approved by ENCAD, Inc. could void the user’s authority to operate the equipment.
NovaJet 800 Series Service Manual
v
VDE Statement
Hiermit wird bescheinigt, daß die NOVAJET 800 Serie von Drucker in Übereinstimmung mit den Bestimmungen der BMPT-AmstbIVfg 234/1991 funkentstört ist. Der vorschriftsmäßige Betrieb mancher Geräte (z.B. Meßsender) kann allerdings gewissen Einschränkungen unterliegen. Beachten Sie deshalb die Hinweise in der Bedienungsanleitung.
Dem Zentralamt für Zulassungen im Fernmeldewesen würde dan Inverkehrbringen dieses Gerätes angezeigt und die Berechtigung zur Überprüfung der Serie auf die Einhaltung der Bestimmungen eingeräumt.
ENCAD, Inc. U.S.A
NovaJet 800 Series Service Manual
vi
Material Safety Data Sheet
ENCAD QIS (Quality Imaging Supplies) ink is nonhazard­ous, 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, contact ENCAD, Inc. at:
6059 Cornerstone Court West San Diego, CA 92121-3734 (619) 452-4350
International users should contact their local dealer or distributor.
NovaJet 800 Series Service Manual
vii
NovaJet 800 Series Service Manual
Warranty or Damage Claims
United States
ENCAD®, Inc., warrants its printers ("PRODUCT") to be free from defects in workmanship and materials for a period of one year from the date of purchase. In order to submit a Warranty claim, please contact the ENCAD Help Desk at (858) 452-4350.
ENCAD reserves the right to make changes or improvements to 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 repair or 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 pur­pose. In no event shall ENCAD be liable for any loss of profit or other commercial damages, special, incidental or consequential damages, or any other damages or claims, whatsoever.
This Warranty gives Buyer specific legal rights, and Buyer may also have other rights that vary from state to state.
This Warranty applies only to printers purchased from ENCAD, or autho­rized ENCAD distributors or dealers. The intent of this Warranty is to repair or replace defective Products subjected to normal wear and tear, when operated according to ENCAD instructions.
viii
NovaJet 800 Series Service Manual
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, Cautions and Notes......................................................1-4
Printer Specifications .................................................................... 1-5
Contents of this Service Manual .................................................... 1-6
Technical Support ......................................................................... 1-8
Chapter 2 Theory of Operation.......................................2-1
Introduction .................................................................................. 2-1
NovaJet 800 Series Printers General Block Diagram ......................2-2
Paper (Media) Axis Drive............................................................... 2-4
The Carriage Axis Drive ................................................................. 2-5
Media Feed and Take-Up System..................................................2-6
Main PWA (Printed Wiring Assembly) ...........................................2-7
Main PWA LED Status Indicators............................................ 2-8
Microprocessor (CPU) ............................................................ 2-8
Gate Array ............................................................................. 2-9
Digital Signal Processor (DSP) ............................................... 2-9
Memory Circuits................................................................... 2-10
Flash EEPROM ............................................................. 2-10
SDRAM ......................................................................... 2-11
Serial EEPROM ............................................................. 2-11
Stepper Motor Controller ....................................................... 2-11
Servo Motor Controller .......................................................... 2-13
Interface Circuits: Serial & Parallel ........................................ 2-15
ix
NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 3 Maintenance ...................................................3-1
Introduction .................................................................................. 3-1
Scheduled Maintenance................................................................ 3-1
Cleaning Procedures ..............................................................3-2
External Cleaning ............................................................. 3-2
Slide Shaft Cleaning ......................................................... 3-2
Service Station Cleaning ................................................... 3-3
Linear Encoder Strip Cleaning ........................................... 3-4
Trailing Cables Cleaning ................................................... 3-5
Platen/Vacuum Hole Cleaning........................................... 3-5
Cartridge Dimples Cleaning .............................................. 3-6
Flex Cable Contact Cleaning ............................................3-7
Clean and Inspect Stepper Motor Gears ............................ 3-8
Clean and Inspect Main PWA...........................................3-8
Clean and Inspect Carriage Assembly............................... 3-8
Dryer Cleaning ................................................................. 3-9
Reseat Connectors on Main PWA and Carriage Boards ........... 3-9
Replace Trailing Cables ........................................................ 3-12
Replace Carriage Cover/Carriage Bushings............................ 3-13
Servo Motor Winding Resistance Check ...................................... 3-14
Stepper Motor Winding Resistance Check ................................... 3-15
Power Feed and Take-Up Motor Winding Resistance Check......... 3-16
Banding: Hardware vs Software ................................................... 3-16
Banding Differences.............................................................. 3-17
Banding Causes & Quick Analysis........................................ 3-19
Horizontal Banding Problems.......................................... 3-19
Vertical Banding Problems.............................................. 3-22
Line Quality Problems (Overspray) .................................. 3-23
Alignments/Adjustments............................................................. 3-24
Slide Shaft Profile Adjustment ............................................... 3-24
Head Height Alignment Procedure ......................................... 3-27
Color Calibration ................................................................... 3-31
Deadband Alignments ........................................................... 3-34
Color Deadband Alignment.............................................. 3-37
Paper Axis Calibration .......................................................... 3-39
Diagnostics Menu....................................................................... 3-40
Firmware Download/Upgrading for the PC .................................... 3-43
Firmware Download/Upgrading for the MAC ................................. 3-44
Internal Cabling and Signal Flow Diagrams .................................. 3-45
x
NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 4 Troubleshooting.............................................4-1
Introduction .................................................................................. 4-1
No Power ............................................................................... 4-1
No Power ............................................................................... 4-2
Initialization Failure................................................................. 4-2
Media Does Not Move............................................................. 4-3
Internal ERROR “Carriage Axis Failure” ...................................4-4
Internal ERROR “Encoder Sensor Failure” ............................... 4-5
Internal ERROR “Paper Sensor Failure” ................................... 4-6
Internal ERROR...................................................................... 4-6
Auto-Load Paper Sensor Failure” ............................................4-6
Internal ERROR “MPCB Failure” ............................................. 4-7
Unrecognized Cartridges Error ................................................4-7
Media Sen Ref. Pts Not Initialized (NJ880 only) ....................... 4-8
Image Skews or Moves........................................................... 4-8
Does Not Print ....................................................................... 4-8
Ink Cartridge Misfiring ............................................................. 4-9
Paper Skewing ..................................................................... 4-10
Printer Output is Banding (Horizontal) ................................... 4-10
Printer Output is Banding (Vertical) ....................................... 4-12
Printer Output is Banding (Horizontally and Vertically) ........... 4-12
Keypad Locked-Up or Not Functioning Properly..................... 4-13
Noisy Operation ................................................................... 4-13
Line Quality Degraded .......................................................... 4-14
Fan Does Not Power Up ....................................................... 4-16
Media Take-UpMotor Not Operating, Sensor Works ............... 4-16
Media Feed Motor Not Operating, Sensor Works................... 4-17
Media Feed and Take-Up Motors Not Operating,
Both Sensors Working.......................................................... 4-17
Media Feed or Take-Up Sensor(s) Not Operating ................... 4-17
Print Quality Issues .............................................................. 4-19
Cartridge Misfires (Intermittent Banding) ................................ 4-19
Failure Analysis - Print Misfires............................................ 4-20
Common Misfire Problems.............................................. 4-25
Clearing Cartridge Misfires.............................................. 4-26
Multiple Cartridge Failures .............................................. 4-26
xi
Table of Contents (cont)
Chapter 4 Troubleshooting (cont)
Microbanding............................................................. 4-28
Banding Differences................................................... 4-30
Horizontal Banding .................................................... 4-31
Vertical Banding ........................................................ 4-43
Line Quality Problems (Overspray) ............................. 4-46
Cartridge Warranty .................................................... 4-47
Cartridge Maintenance & Testing................................ 4-48
Ink Starvation............................................................. 4-52
Ink Dropout ............................................................... 4-57
Color Test Problems .................................................. 4-60
“Unrecognized Cartridge” Error Message .................... 4-63
Paper Sensor Error.................................................... 4-65
Encoder Sensor Error ................................................ 4-68
AutoLoad Paper Sensor Error .................................... 4-69
Carriage Axis Error .................................................... 4-70
Initialization Failure................................................ 4-75
Media Sensor Reference Points Not Initialized........... 4-79
Hardware Failures/Diagnostic Tests............................ 4-79
Dryer Failure/Sensor Error ......................................... 4-81
Intermittent Problems/Continuity ................................ 4-86
Reinitializing the Printer ............................................. 4-95
Printer Hesitation/Networking Problems...................... 4-96
Parallel Port Test ..................................................... 4-100
Firmware Downloading Procedures........................... 4-101
NJ850 Printer .......................................................... 4-101
NJ880 Printer .......................................................... 4-102
Media Handling System Failure................................ 4-104
NovaJet 800 Series Service Manual
xii
NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 5 Assembly\Disassembly................................5-1
Introduction .................................................................................. 5-1
Remove the Left, Top, and Right Covers......................................... 5-2
Remove the E-Connect Network Assembly .................................... 5-6
Install the E-Connect Network Assembly ....................................... 5-7
Remove the Keypad and Display ................................................... 5-8
Install the Keypad and Display ...................................................... 5-9
Remove Memory Module............................................................. 5-10
Install Memory Module................................................................ 5-11
Remove the Main Printed Wiring Assembly (PWA) ...................... 5-11
Install the Main Printed Wiring Assembly (PWA) ......................... 5-14
Remove Power Supply, Cooling Fan, and AC Entry Module .......... 5-15
Install the Power Supply, Cooling Fan, and AC Entry Module........ 5-17
Remove Servo Motor ................................................................... 5-18
Install Servo Motor ...................................................................... 5-20
Remove the Ink Delivery System ................................................. 5-21
Install the Ink Delivery System .................................................... 5-23
Remove the Carriage Assembly, Carriage Belt, and the Frame
Tensioner.................................................................................... 5-23
Install the Carriage Assembly, Carriage Belt, and the
Frame Tensioner ......................................................................... 5-28
Remove the Carriage 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
Replacing the Floating Carriage Cover Bushings .......................... 5-37
Replacing the Carriage Bushings................................................. 5-39
Remove the Service Station......................................................... 5-40
Install the Service Station ............................................................ 5-41
Remove the Trailing Cable Assembly ........................................... 5-41
Install the Trailing Cable Assembly .............................................. 5-42
Remove the Stabilizer Bracket and Encoder Strip......................... 5-43
Install the Stabilizer Bracket and Encoder Strip............................ 5-44
Remove the Y-Arm Assembly, Pinch Rollers, Slide Shaft, and
AutoLoad Sensor........................................................................ 5-44
Install the Y-Arm Assembly, Pinch Rollers, Slide Shaft,
and AutoLoad Sensor.................................................................. 5-47
Remove the Gap Sensor (NovaJet 880 only)................................. 5-48
xiii
NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 5 Assembly\Disassembly (cont)
Remove the Lower Roller Assembly, Stepper Motor and
Vacuum Fan (NovaJet 850).......................................................... 5-48
Install the Lower Roller Assembly, Stepper Motor and
Vacuum Fan (NovaJet 850).......................................................... 5-51
Remove the Lower Roller Assembly, Stepper Motor and
Vacuum Fan (NovaJet 880).......................................................... 5-54
Lower Roller Installation Tip (NovaJet 880) ................................... 5-57
Y-Arm Assembly Installation Tip (NovaJet 880)............................. 5-57
Remove the Media Take-Up and Feed Sensor Brackets and
Sensors ..................................................................................... 5-58
Install the Media Take-Up and Feed Sensor Brackets and
Sensors ..................................................................................... 5-59
Remove the Media Take-Up and Feed Motors .............................. 5-60
Install the Media Take-Up and Feed Motors ................................. 5-60
Remove the Thermal Dryer Assembly .......................................... 5-61
Install the Thermal Dryer Assembly ............................................. 5-62
Remove the Thermal Dryer Right Endcap Assembly..................... 5-62
Install the Thermal Dryer Right Endcap Assembly............................ 5-
64Assembly\Disassembly............................................................. 5-1
Introduction .................................................................................. 5-1
Remove the Left, Top, and Right Covers......................................... 5-2
Remove the E-Connect Network Assembly .................................... 5-6
Install the E-Connect Network Assembly ....................................... 5-7
Remove the Keypad and Display ................................................... 5-8
Install the Keypad and Display ...................................................... 5-9
Remove Memory Module............................................................. 5-10
Install Memory Module................................................................ 5-11
Remove the Main Printed Wiring Assembly (PWA) ...................... 5-11
Install the Main Printed Wiring Assembly (PWA) ......................... 5-14
Remove Power Supply, Cooling Fan, and AC Entry Module .......... 5-15
Install the Power Supply, Cooling Fan, and AC Entry Module........ 5-17
Remove Servo Motor ................................................................... 5-18
Install Servo Motor ...................................................................... 5-20
Remove the Ink Delivery System ................................................. 5-21
Install the Ink Delivery System .................................................... 5-23
xiv
NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 5 Assembly\Disassembly (cont)
Remove the Carriage Assembly, Carriage Belt, and the Frame
Tensioner.................................................................................... 5-23
Install the Carriage Assembly, Carriage Belt, and the
Frame Tensioner ......................................................................... 5-28
Remove the Carriage 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
Replacing the Floating Carriage Cover Bushings .......................... 5-37
Replacing the Carriage Bushings................................................. 5-39
Remove the Service Station......................................................... 5-40
Install the Service Station ............................................................ 5-41
Remove the Trailing Cable Assembly ........................................... 5-41
Install the Trailing Cable Assembly .............................................. 5-42
Remove the Stabilizer Bracket and Encoder Strip......................... 5-43
Install the Stabilizer Bracket and Encoder Strip............................ 5-44
Remove the Y-Arm Assembly, Pinch Rollers, Slide Shaft, and
AutoLoad Sensor........................................................................ 5-44
Install the Y-Arm Assembly, Pinch Rollers, Slide Shaft, and
AutoLoad Sensor........................................................................ 5-47
Remove the Gap Sensor (NovaJet 880 only)................................. 5-48
Remove the Lower Roller Assembly, Stepper Motor and
Vacuum Fan (NovaJet 850).......................................................... 5-48
Install the Lower Roller Assembly, Stepper Motor and Vacuum
Fan (NovaJet 850) ....................................................................... 5-51
Remove the Lower Roller Assembly, Stepper Motor and
Vacuum Fan (NovaJet 880).......................................................... 5-54
Lower Roller Installation Tip (NovaJet 880) ................................... 5-57
Y-Arm Assembly Installation Tip (NovaJet 880)............................. 5-57
Remove the Media Take-Up and Feed Sensor Brackets and
Sensors ..................................................................................... 5-58
Install the Media Take-Up and Feed Sensor Brackets and
Sensors ..................................................................................... 5-59
Remove the Media Take-Up and Feed Motors .............................. 5-60
Install the Media Take-Up and Feed Motors ................................. 5-60
Remove the Thermal Dryer Assembly .......................................... 5-61
Install the Thermal Dryer Assembly ............................................. 5-62
Remove the Thermal Dryer Right Endcap Assembly..................... 5-62
Install the Thermal Dryer Right Endcap Assembly........................ 5-64
xv
NovaJet 800 Series Service Manual
Table of Contents (cont)
Chapter 6 Parts List........................................................6-1
xvi
NovaJet 800 Series Service Manual
List of Illustrations
Figure Page
Chapter 1 General Description
1-1. NovaJet 800 Series Inkjet Printer .................................................1-1
Chapter 2 Theory of Operation
2-1. General Block Diagram. .............................................................. 2-3
2-2. Paper (Media) Axis Drive. ............................................................2-4
2-3. Carriage Axis Drive. ..................................................................... 2-5
2-4. Power Feed and Take-Up System................................................ 2-6
2-5. Main PWA (Printed Wiring Assembly).......................................... 2-7
2-6. Gate Array. ................................................................................. 2-9
2-7. Stepper Motor Controller. ........................................................... 2-11
2-8. Servo Motor Controller. .............................................................. 2-13
2-9. Quadrature Signal Generation.................................................... 2-14
2-10. Interface Circuits. .................................................................... 2-15
2-11. Carriage Assembly Circuits. ..................................................... 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. Main PWA Connection Locations............................................... 3-10
3-5. Carriage PWA Connection Locations. ........................................ 3-11
3-6. Ribbon Connector Locking Mechanism. ..................................... 3-12
3-7. Servo Motor............................................................................... 3-14
3-8. Stepper Motor. .......................................................................... 3-15
3-9. Power Feed and Take-Up Motor. ................................................ 3-16
3-10. Examples of Horizontal Banding. ............................................. 3-17
3-11. Dial Gauge Micrometer Assembly. ........................................... 3-25
3-12. Measurement Positions for Slide Shaft..................................... 3-26
3-13. Slide Shaft Profile Adjustment.................................................. 3-27
3-14. Carriage Head Height Tolerance. .............................................. 3-28
3-15. Setting Up Tools from Height Gauge Kit. ................................. 3-28
3-16. Zeroing the Micrometer Gauge. ................................................ 3-29
3-17. Test Cartridge Installed. ........................................................... 3-29
3-18. Vert. and Horiz. Color Calibration. ............................................ 3-32
3-19. Utility Menu. ........................................................................... 3-33
xvii
NovaJet 800 Series Service Manual
List of Illustrations (cont)
Figure Page
Chapter 3 Maintenance (cont.)
3-20. Color Calib Menu..................................................................... 3-33
3-21. Vertical Options 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. Carriage PWA Connections Diagram........................................ 3-46
3-32. Leg Harness Connections Diagram. ......................................... 3-47
Chapter 4 Troubleshooting
4-1. Cartridge Misfire. ..................................................................... 4-19
4-2. Excessive Ink Pressure. .......................................................... 4-20
4-3. Dirty Service Station. ............................................................... 4-21
4-4. Septum and Valves. ................................................................. 4-21
4-5. Unseated Flex Driver Cable. ..................................................... 4-22
4-6. Septum Connector. .................................................................. 4-22
4-7. Damaged Flex Driver Cable. ..................................................... 4-23
4-8. Defective Trailing Cable. ........................................................... 4-23
4-9. Unseated or Defective Trailing Cable......................................... 4-24
4-10. Defective Carriage PWA. ......................................................... 4-24
4-11. Stall Configuration.................................................................... 4-25
4-12. Magenta Cartridge Misfires. ..................................................... 4-25
4-13. Adjacent Jet Misfire (Cyan). ..................................................... 4-26
4-14. Service Station. ....................................................................... 4-27
4-15. Defective Cartridge Power Lines. .............................................. 4-27
4-16. Catastrophic Jet Failure. ........................................................... 4-28
4-17. Power Line Failure. .................................................................. 4-28
4-18. Address Line Failure. ............................................................... 4-28
4-19. Multiple Address Line Failure. .................................................. 4-28
4-20. Microbanding. .......................................................................... 4-29
4-21. Quality Print Modes. ................................................................ 4-29
4-22. Ink Cartridge Configurations. .................................................... 4-30
4-23. Defective Magenta Cartridge..................................................... 4-31
4-24. AutoWipe Interference. ............................................................ 4-32
4-25. Improper Grounding. ................................................................ 4-32
xviii
NovaJet 800 Series Service Manual
List of Illustrations (cont)
Figure Page
Chapter 4 Troubleshooting (cont)
4-26. Unseated or Defective Trailing Cables. ...................................... 4-33
4-27. ESD Problems. ........................................................................ 4-34
4-28. Defective Carriage PWAs. ........................................................ 4-34
4-29. Carriage Head Strike. ............................................................... 4-35
4-31. Low Data Transfer Problem. ..................................................... 4-35
4-32. Test Print. ................................................................................ 4-36
4-33. Misfiring Jet.............................................................................. 4-36
4-34. Defective Carriage PWA (Color Test). ........................................ 4-37
4-35. Defective Stepper Motor. ........................................................... 4-37
4-36. Defective Stepper Motor. ........................................................... 4-38
4-37. Servo System Synchronization Failure. ..................................... 4-39
4-38. RIP Error. ................................................................................. 4-39
4-39. Connectivity Problem . .............................................................. 4-40
4-40. Dirty or Defective Encoder Strip. ............................................... 4-40
4-41. Main PWA Failures. ................................................................. 4-41
4-42. RIP Problem. ........................................................................... 4-42
4-4. Bent Servo Motor Pulley........................................................... 4-42
4-44. Dirty or Worn Carriage Bushings. ............................................. 4-43
4-45. Worn Bushings or Bushing Pads. ............................................ 4-43
4-46. Defective Trailing Cable Examples. ........................................... 4-44
4-47. Dirty Encoder Strip. ................................................................. 4-45
4-48. Defective Teflon Strip. .............................................................. 4-45
4-49. RIP Error (Page Layout Violation)............................................. 4-46
4-50. ESD Problem. ......................................................................... 4-47
4-51. Jet Out Detection. ................................................................... 4-48
4-52. Cartridge Cleaning. .................................................................. 4-50
4-53. Service Station Cleaning. ......................................................... 4-51
4-54. Magenta Ink Pressure Failure. ................................................. 4-52
4-55. Ghosting. ................................................................................ 4-53
4-56. Cartridge Tubing Needle and Septum. ...................................... 4-54
4-57. 208 Jet Cartridge. .................................................................... 4-55
4-58. EasyPrime Operation. ............................................................. 4-55
4-59. Reservoirs and Ink Delivery System.......................................... 4-56
4-60. Excessive Ink Pressure. .......................................................... 4-57
4-61. Excessive Ink PreHeat Settings. .............................................. 4-58
4-62. Dirty Service Station Problem................................................... 4-60
xix
NovaJet 800 Series Service Manual
List of Illustrations (cont)
Figure Page
Chapter 4 Troubleshooting (cont)
4-63. Normal Color Test (3 Pass)...................................................... 4-61
4-64. Abnormal Test Examples. ........................................................ 4-61
4-65. Cartridge Tubing Needle and Septum. ...................................... 4-62
4-66. Ink Starvation. ......................................................................... 4-63
4-67. Cartridge Identification Chip. .................................................... 4-64
4-68. Flex Driver Cable. .................................................................... 4-65
4-69. Paper Sensor. ......................................................................... 4-66
4-70. Paper Sensor Location. ........................................................... 4-68
4-71. Encoder Sensor. ..................................................................... 4-68
4-72. AutoLoad Paper Sensor. .......................................................... 4-70
4-73. Carriage Head Assembly. ......................................................... 4-71
4-74. Servo Cycle/PWM Menu. ......................................................... 4-71
4-75. Dirty or Defective Encoder Strip................................................ 4-72
4-76. Main PWA Trailing Cable 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. Functional Problem................................................................. 4-80
4-83. Connectivity Problem............................................................... 4-80
4-84. ESD Problem.......................................................................... 4-81
4-85. Main PWA Humidity Sensor..................................................... 4-82
4-86. Dryer LEDs. ............................................................................ 4-85
4-87. Dryer Connectivity. .................................................................. 4-85
4-88. Internal Test Print. ................................................................... 4-86
4-89. SEH Activated Test Pattern...................................................... 4-87
4-90. E-Connect LEDs. .................................................................... 4-87
4-91. Driver/RIP Problem. ................................................................. 4-88
4-92. Inadaquate Network Data Transfer Rate................................... 4-88
4-93. ESD Problems. ....................................................................... 4-89
4-94. Servo Cycle/PWM Menu. ........................................................ 4-90
4-95. Carriage Bushings. ................................................................. 4-90
4-96. Servo System Synchronization Error. ...................................... 4-91
4-97. Probable Defective Main PWA. ............................................... 4-91
xx
NovaJet 800 Series Service Manual
List of Illustrations (cont)
Figure Page
Chapter 4 Troubleshooting (cont)
4-98. Probable Defective Carriage PWA........................................... 4-92
4-99. Defective Main PWA. ............................................................. 4-92
4-100. Corrupted Code - Main PWA................................................... 4-93
4-101. Microbanding.......................................................................... 4-93
4-102. Apparent Ink Overspray. ......................................................... 4-94
4-103. True Type Font Problem.......................................................... 4-94
4-104. Print Settings Not Printing in Black. ........................................ 4-94
4-105. Text Field Problem. ................................................................ 4-95
4-106. Dirty or Defective Encoder Strip. .............................................. 4-95
4-107. Initialization Menu Location. .................................................... 4-96
4-108. Printer Hesitation Causes. ...................................................... 4-97
4-109. E-Connect LEDs. ................................................................... 4-99
4-110. Semi-Circular Nook Test Pattern. ............................................ 4-99
4-111. Loopback Test Cable............................................................ 4-100
4-112. Demo Print. ......................................................................... 4-101
4-113. Firmware Download Procedures. .......................................... 4-102
4-114. Media Handling System. ...................................................... 4-104
Chapter 5 Assembly/Disassembly
5-1. Right Cover Assembly Removal/Installation. .............................. 5-3
5-2. Left Cover Removal/Installation. ................................................ 5-4
5-3. E-Connect Assembly Installation/Removal. ............................... 5-7
5-4. Keypad and Display Installation/Removal. ................................. 5-8
5-5. Keypad and Display Grounding Connections. ............................ 5-9
5-6. Memory Module Removal/Installation. ..................................... 5-10
5-7. Main PWA Removal. .............................................................. 5-13
5-8. Power Supply Removal........................................................... 5-16
5-9. Cooling Fan/AC Entry Module Removal................................... 5-17
5-10. Using the Belt Removal Tool. .................................................. 5-19
5-11. Chain Guide Removal. ............................................................ 5-21
5-12. Left Side of Ink Delivery System. ............................................ 5-22
5-13. Floating Carriage Cover Removal. ........................................... 5-22
5-14. Using the Belt Removal Tool. .................................................. 5-24
5-15. Electronics Covers Removal. .................................................. 5-25
5-16. Strain Relief Removal/Installation. ............................................ 5-26
5-17. Carriage Belt Clamp. ............................................................... 5-27
xxi
NovaJet 800 Series Service Manual
List of Illustrations (cont)
Figure Page
Chapter 5 Assembly/Disassembly (cont.)
5-18. Carriage Coupler Installation. ................................................... 5-28
5-19. Left Carriage Installation. ......................................................... 5-29
5-20. Carriage PWA Removal/Installation. ......................................... 5-32
5-21. Paper and Encoder Sensor Removal. ....................................... 5-34
5-22. Paper and Encoder Sensor Installation..................................... 5-36
5-23. Floating Carriage Cover Bushing Removal. ............................... 5-38
5-24. Carriage Bushing Removal. ...................................................... 5-39
5-25. Carriage Bushing Installation. .................................................. 5-40
5-26. Service Station Removal. ......................................................... 5-40
5-27. Stabilizer Bracket Installation/Removal. .................................... 5-43
5-28. Y-Arm Installation/Removal. ..................................................... 5-45
5-29. Pinch Roller. ........................................................................... 5-46
5-30. Stepper Motor Removal/Installation. ......................................... 5-51
5-31. Inside Platen, Right Side. ........................................................ 5-53
5-32. Media Take-Up and Feed Sensor Removal. .............................. 5-59
5-33. Media Take-Up and Feed Motor Removal.................................. 5-61
5-35. Dryer Right Endcap Removal/Installation. ................................. 5-63
5-36. Right Endcap Connector Locations. ......................................... 5-65
Chapter 6 Parts List
6-1. Left Side Parts Breakdown. ......................................................... 6-3
6-2. Platen and Above Parts Breakdown. ............................................ 6-5
6-3. Right Side Parts Breakdown. ....................................................... 6-7
6-4. Inner Platen Parts Breakdown. .................................................... 6-9
6-5. Carriage Assembly Parts Breakdown. ........................................ 6-11
6-6. Floating Carriage Cover Parts Breakdown................................... 6-13
6-7. Service Station Parts Breakdown. .............................................. 6-15
6-8. Power Feed and Take-Up Parts Breakdown................................ 6-17
xxii
NovaJet 800 Series Service Manual
List of Tables
Table Page
Chapter 3 Maintenance
3-1. Main PWA Connections. ............................................................ 3-10
3-2. Carriage PWA Connections. ....................................................... 3-11
Chapter 4 Troubleshooting
4-1. Troubleshooting Table.................................................................. 4-1
Chapter 5 Assembly/Disassembly
5-1. Thermal Dryer PWA Connections................................................ 5-65
xxiii
NovaJet 800 Series Service Manual
General Description 1

Introduction

Figure 1-1. NovaJet 800 Series Inkjet Printer.
This manual provides service information for the ENCAD®, Inc. NovaJet® 800 Series Color Inkjet Printers. The NovaJet 850
printer is available in two sizes: a 42 inch model and a 60 inch model. The NovaJet 880 printer is available in a 60 inch model.
It is written for service personnel who possess analog and digital circuitry experience. Chapter 2, Theory of Operation, should be read and thoroughly understood before troubleshooting/calibrating the printers.
The printers support pre-cut and roll media. Media size is automatically determined and hardclip limits are set accordingly. Pre-cut media uses different maximum plotting areas than roll media. See the Printer Specifications in the User Reference Guide for more details on the media size printable area.
General Description 1-1
NovaJet 800 Series Service Manual
A Centronics parallel connection is provided to interface with the host computer. Commands sent from the host computer can be in several forms including HP-GL/2, HP-RTL and Encad RTL formats.
Drivers are supplied to support Windows®-based PCs (95, 98, ME, NT and 2000) as well as Macintosh and Power PC computers.
These printers expand upon ENCAD’s tradition of delivering fast, high-quality color or monochrome graphics for a variety of applications. ENCAD has made significant advances in designing these printers to respond to and anticipate our customers’ needs. Principal features are summarized below.
Locally or Remotely Configured via Host Computer Powered Media Handling System Dynamic Thermal Drying System V8 12-Ink Line Delivery System Quick Ink Changeover Anti-Skew Pinch Rollers PowerPC 50 MHz Microprocessor 8 User Configurable Settings 208 Jet Ink Cartridges Ink Priming System 500ml Ink Reservoirs Smart Cartridges Media Tracking Function 10/100BaseT Network Interface Rigid Media Handling System (NJ880 only)
General Description 1-2

Overview

Related Publications

NovaJet 800 Series Service Manual
Printers draw according to instructions issued from a “host” computer. Every printer is engineered to understand a specific set of instructions and to execute each instruction in a precise manner. In addition, most printers are designed to execute predetermined characters automatically without a specific line-by-line instruction from the program. These characters are part of the printer’s permanent memory.
The following publication contains additional information which may be useful in servicing the NovaJet 800 Series Color Inkjet Printers:
? ENCAD NovaJet 800 Series Quick Start Guide,
P/N 215360-XX
? ENCAD NovaJet 800 Series System CD-ROM,
P/N 215363-XX
Copies of these and other ENCAD, Inc. publications may be obtained by contacting your nearest authorized ENCAD, Inc. dealer or by contacting ENCAD’s Technical Support and Service Department.

Electrostatic Discharge (ESD) Sensitivity

All PCBs (Printed Circuit Boards) associated with these printers have components sensitive to ESD (electrostatic discharge). Care must be taken to avoid damage to any of the components by following current ESD handling procedures and practices.
Always use an approved ESD grounding strap when handling or working with PCBs.
General Description 1-3

Warnings, Cautions and Notes

Warnings, cautions and notes are used when additional information, instructions or care should be observed. In this manual warnings, cautions and notes precede the text to which each applies. The definition of each is provided below.
WARNINGS - Warnings are used to stress that the following steps or procedures has the potential to cause serious harm or death to service personnel. Extreme care should be observed when following the procedures and to exercise standard safety procedures. They are indicated by:
Followed by a paragraph describing the concern.
NovaJet 800 Series Service Manual
CAUTION - Cautions depict that the following steps or procedures can cause damage to the equipment if not properly followed. Extreme care should be observed when following the procedures and to exercise standard safety procedures. They are indicated by:
Followed by a paragraph describing the concern.
NOTE - Notes are placed before a procedure to inform the service personnel of specific details to improve quality, to give reminders of interrelated parts and to provide other helpful information. They are indicated by:
NOTE
Followed by a paragraph describing the concern.
General Description 1-4

Printer Specifications

The specifications and performance characteristics of the NovaJet 800 Series Color Inkjet Printers are as follows:
NovaJet 800 Series Service Manual
Max Printing Area:
42 inch 60 inch
Norm 40.8” 58.8”
1.04m 1.49m
Extend 41.61” 59.61”
1.06m 1.51m
Language Emulation:
HP-RTL ENCAD RTL HP GL/2
Buffer:
64 MB installed upgradeable to 256 MB
Power Requirements:
Input Voltage:
90-246 VAC 47-63 Hz
Output Power:
20 W idle 185 W typical 285 W maximum 1485 W maximum (with
dryer on)
Resolution:
600x600 dpi or 300x300 dpi RTI
Accuracy:
+/- 0.2% line length using ROLL feed and 4 mil drafting matte film
Interface:
Centronics parallel
(IEEE 1284)
Network: via
100BaseT Interface
Certifications:
Safety
CSA, CSE/NRTL (equivalent to UL1950) TUV GS EN 50 082-1 EN 60 950 UL1950 NOM-019-SCFI-1993 IEC 950 AS/NZS 3260
EMI
FCC Class A CSA C108.8 EN 55 022 Class A CE Mark CISPR 22- Class A AS/NZS 3548
General Description 1-5
NovaJet 800 Series Service Manual
Environment:
Operating:
65° to 85° F
Weight: NJ850 NJ880
60” 165 lbs 235 lbs
42” 150 lbs (18° to 30° C) 5% to 80% RH non-condensing
Storage:
Dimensions:
Height 44”(1.12m) 48” (1.22m)
Width 93” (2.37m) 40° to 95° F (4° to 35° C) 5% to 80% RH non-condensing
Depth 28” (0.71m)

Contents of this Service Manual

Figures are used in this manual to clarify procedures. They are for illustrative purposes only and may not necessarily be drawn to scale.
Material in this manual may be repeated in various chapters so that each chapter can “stand alone”. This allows information to be located without having to refer back and forth between chapters.
42 inch
111” (2.82m) 111” (2.82m) 60 inch
Figures and tables are easily located and cross-referenced, and are listed in the front of the manual under List of Illustrations and List of Tables.
This manual is divided into six chapters as follows:
Chapter 1 GENERAL DESCRIPTION - Contains a general
description of the ENCAD NovaJet 800 Series printer. This includes printer specifications, and related materials. Also included is a description of the use of Warnings, Cautions and Notes as used in this manual and chapter contents.
Chapter 2 THEORY OF OPERATION - Functional descriptions
of the overall printer and major assemblies are contained in this chapter.
General Description 1-6
NovaJet 800 Series Service Manual
Chapter 3 MAINTENANCE - This chapter covers the scheduled maintenance,
cleaning procedures and alignment/adjustments recommended to perform on the printers. Diagnostics and a signal flow diagram are also listed.
Chapter 4 TROUBLESHOOTING - A table containing problems that could occur
and possible causes and repairs is found in this chapter. This table is not intended to be a complete listing of troubleshooting procedures. It will isolate the problem down to the lowest replacable assembly. If the problem happens to be the wiring between assemblies, standard troubleshooting techniques will have to be implemented to correct the problem.
Chapter 5 ASSEMBLY/DISASSEMBLY - Contains detailed procedures to
remove and replace printer parts and assemblies.
Chapter 6 PARTS LIST - Contains a complete listing of all field replacable parts
and assemblies for the color inkjet printers. Illustrated parts breakdown drawings are included to help clarify and identify parts for ordering. Special kits and adjustment jigs may also be required.
ORIENTATION - Instructions in this manual are based on the assumption that the service person is facing the front of the printer. References to top view, back view, and so forth are consistent with this engineering standard. References to the X Axis and Y Axis (Paper Axis and Carrier Axis, respectively) follow the standard of AutoCAD™ absolute coordinates: up and down for X, left to right for Y.
General Description 1-7
Loading...
+ 258 hidden pages
Buy Points How it Works FAQ Contact Us Questions and Suggestions Privacy Policy Cookie Policy Terms of Use