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Print Defects
Print quality refers to the entire print. Defects
can occur anywhere on the print. These defects
could be damaged media or print quality defects.
Always eliminate problems that cause the
damaged media before attempting to fix print
quality problems. Some damaged media
problems could cause print quality problems.
Compare the print defect to the definitions on
this page and the next page. After you have
determined the definition that best describes the
print defect, go to the Section Contents page.
The Section Contents page will direct you to a
Print Quality Problem / Cause Table. The
Problem / Cause Table lists the probable causes
and corrective actions.
The PROBABLE CAUSES are arranged in order
of most probable cause to least probable cause
or the ease of the check. CORRECTIVE
ACTIONS are given for each cause. Read all of
the probable causes before taking any corrective
action.
a. Start with the first PROBABLE CAUSE
and continue through the list until you
come to the cause that best applies to
the image defect.
b. Perform the CORRECTIVE ACTION.
c. If the defect has been corrected, go to
the Maintenance Activities in the Service
Call Procedures in Section 1. If the
defect is still present, continue with the
other PROBABLE CAUSES.
Print Quality Definitions
The following terms are some of the most
commonly used terms that describe image
quality problems.
Background
Background occurs as darkness or dirtiness on
the non-image areas of the print.
Black Print
This is a print that is entirely black except for the
lead edge, trail edge and possibly the left and
right edges.
Blank Print
This is a print entirely without an image.
Deletions
An area of the image where information has
been lost. The areas of deletions could be
localized or bands from top to bottom or side to
side.
Density
The relative blackness between the image and
non-image areas.
Fuser Fix
This is a measure of how the toner particles
adhere to the media as a result of the fusing
process.
Print Displacement
Part of the image information is being placed
elsewhere on the print or it is completely
missing. The area of the missing information is
sharply defined. This is unlike deletions where
the image is not sharply defined or clear.
Print Distortion or Skew
The Image is skewed on the media. The image
from side to side or lead edge to trail edge is not
parallel to the edges of the print. There is also
distortion of the image from one side of the copy
to the other. These defects are a result of a
misadjustment of the media transportation
system components.
Light Image
These are prints where the density is lighter than
the specified density for the printer.
Line Darkness
This is the darkness and uniformity for a line.
Misregistration
This is when the distance from the lead edge of
the image to the lead edge of the media is not
within specification.
Offsetting
This is the transfer of toner from the print to the
heat roll. Sometimes the toner is transferred
back to the print or consecutive prints.
Media Damage
This is any physical distortion to the media that Is
used in making a print. This distortion may
include folds, wrinkles, etc.
8830
1/98
3-3
Print Quality Definitions
Summary of Contents for Synergix 8830
Page 2: ......
Page 8: ...1 98 Introduction viii 8830...
Page 11: ...Call Flow Diagram 8830 1 98 1 3 Call Flow Diagram...
Page 13: ...Print Defect Isolation Procedure 8830 1 98 1 5 Print Defect Isolation Procedure...
Page 14: ...Workstation Checkout Procedure Workstation Checkout Procedure 1 98 1 6 8830...
Page 34: ...Notes 1 98 1 26 8830...
Page 52: ...Notes 1 98 2 18 8830...
Page 84: ...Notes 1 98 3 32 8 8 3 0...
Page 86: ...Notes 1 98 4 2 8830...
Page 100: ...Notes 1 98 4 16 8 8 3 0...
Page 112: ...Notes 1 98 4 28 8830...
Page 126: ...Notes 1 98 4 42 8830...
Page 184: ...Notes 1 98 4 100 8830...
Page 191: ...8830 1 98 4 109 ADJ 10 2...
Page 192: ...ADJ 10 1 1 98 4 108 8830...
Page 193: ...Notes 1 98 8830 4 111...
Page 194: ...1 98 4 112 8830...
Page 287: ...8830 1 98 7 3 Level 1 BSD...
Page 288: ...Level 1 BSD 1 98 7 4 8830 LEVEL 1 BSD SHEET 2 OF 4...
Page 291: ...1 98 7 7 PAGE INTENTIONALLY BUNK...
Page 299: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 15 Chain 1 Standby Power...
Page 303: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 19 Chain 2 Mode Control...
Page 306: ...PAGE INTENTIONALLY BLANK 1 98 Chain 2 Mode Control 7 22 8830...
Page 307: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 23 Chain 3 Machine Run Control...
Page 310: ...PAGE INTENTIONALLY BLANK 1 98 Chain 3 Machine Run Control 7 26 8830...
Page 311: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 27 Chain 4 Print Power...
Page 317: ...4 3 DRUM DRIVE 2 OF 2 LEFT SIDE FRONT 07012 8830 1 98 7 33 Chain 4 Print Power...
Page 318: ...PAGE INTENTIONALLY BLANK 1 98 Chain 4 Print Power 7 34 8830...
Page 319: ...PAGE INTENTIONALLY BUNK 1 98 8830 7 35 Chain 6 Imaging...
Page 320: ...Chain 6 Imaging 1 98 7 36 8830...
Page 324: ...PAGE INTENTIONALLY BLANK 1 98 Chain 6 Imaging 7 40 8 8 3 0...
Page 325: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 41 Chain 7 Paper Supplying...
Page 328: ...Chain 7 Paper Supplying 1 98 7 44 8830...
Page 330: ...Chain 7 Paper Supplying 1 98 7 46 8830...
Page 332: ...Chain 7 Paper Supplying 1 98 7 48 8830...
Page 334: ...7 5 MEDIA CUTTING 1 OF 2 CUTTER DRIVE MOTOR A6MOT1 Chain 7 Paper Supplying 1 98 7 50 8830...
Page 335: ...8830 1 98 7 51 Chain 7 Paper Supplying...
Page 336: ...PAGE INTENTIONALLY BLANK 1 98 Chain 7 Paper Supplying 7 52 8830...
Page 337: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 53 Chain 8 Paper Feeding...
Page 338: ...Chain 8 Paper Feeding 1 98 7 54 8830...
Page 341: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 57 Chain 9 Xerographies...
Page 342: ...Chain 9 Xerographics 1 98 7 58 8830...
Page 344: ...9 2 EXPOSURE 1 OF 1 IMAGE MODULE Chain 9 Xerographics 1 98 7 60 8830...
Page 345: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 61 Chain 9 Xerographies...
Page 349: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 65 Chain 9 Xerographics...
Page 352: ...Chain 9 Xerographics 1 98 7 68 8830...
Page 354: ...Chain 9 Xerographics 1 98 7 70 8830...
Page 356: ...Chain 9 Xerographics 1 98 7 72 8830...
Page 358: ...PAGE INTENTIONALLY BLANK 1 98 Chain 9 Xerographics 7 74 8830...
Page 359: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 75 Chain 10 Fusing...
Page 361: ...8830 1 98 7 77 Chain 10 Fusing...
Page 362: ...Chain 10 Fusing 1 98 7 78 8830...
Page 363: ...PAGE INTENTIONALLY BLANK 1 98 8830 7 79 Chain 10 Fusing...
Page 364: ...Chain 10 Fusing 1 98 7 80 8830...
Page 366: ...1 98 Chain 10 Fusing 7 82 8830...
Page 368: ...Chain 10 Fusing 1 98 7 84 8830...
Page 374: ...Revision Control List Product 8830 DDS Title Service Manual Part Number 701P11550 Date 3 98...
Page 378: ...3 98 VI 8830 DDS...
Page 386: ...Introduction Reference Symbology xiv 8830 DDS...
Page 388: ...Service Call Procedures 3 98 8830 DDS...
Page 396: ...Repair Analysis Procedures 3 90 2 2 8830 DDS...
Page 401: ...3 Image Quality RAP Image Quality RAP 3 3 3 98 Image Quality RAP 8830 DDS 3 1 Section Contents...
Page 402: ...Image Quality RAP 3 98 3 2 8830 DDS...
Page 404: ...Image Quality Repair Analysis Procedures 3 4 8830 POS...
Page 406: ...Repair and Adjustment Procedures 4 2 8830 DOS...
Page 414: ...Repairs Adjustments REP 4 1 6 4 10 8830 DDS...
Page 428: ...General Procedures 6 2 8830 DDS...
Page 430: ...Figure 1 Main Menu Tree Structure General Procedures Diagnostics 3 08 6 4 6830 DDS...
Page 442: ...General Procedures 3 9 8 l Diagnostics 6 16...
Page 452: ...General Procedures 3 f l f l Repack Procedure 6 2 6 883ODDS...
Page 464: ...General Procedures Change Tag Mod Index 6 38...
Page 466: ...Wiring Data 7 2 8830 DDS...
Page 467: ...1 1 AC Power Figure 1 8830 DDS Control Panel 8830 DDS 3 98 7 3 Wiring Data 1 1 AC Power...
Page 468: ...Wirlng Data 1 1 AC Power 7 4 8830DDs...
Page 470: ...9 19 96...
Page 471: ...Analyst may complete page 3 9 19 96...
Page 474: ...implementation Plan THE DOCUMENT COMPANY XEROX 9 19 96...
Page 497: ...Notes 4 97 2 2 7356 Scanner...
Page 501: ...Figure 2 AC Power Circuits 1 1 AC Power RAP 4 97 2 6 7356 Scanner...
Page 505: ...Figure 4 DC Power Circuits Sheet 1 of 2 1 2 DC Power RAP 4 97 7356 Scanner...
Page 506: ...Figure 4 DC Power Circuits Sheet 2 of 2 7356 Scanner 2 98 2 11 1 2 DC Power RAP...
Page 509: ...Figure 3 Document Illumination Circuits 1 3 Exposure Lamp RAP 4 97 2 14 7356 Scanner...
Page 518: ...Notes 4 97 3 2 7356 Scanner...
Page 526: ...Notes 4 97 NOTES 4 2 7356 SCANNER...
Page 572: ...Notes 4 97 NOTES 4 48 7356 SCANNER...
Page 586: ......
Page 596: ...Figure 6 10 Memory Tests Screen Diagnostics 4 97 6 10 7356 Scanner...
Page 620: ...Notes 4 97 7 2 7356 Scanner...
Page 621: ...1 1 AC Power Distribution 7356 Scanner 4 97 7 3 1 1 AC Power Distribution BSD...
Page 622: ...1 2 DC Power Generation 1 2 DC Power Generation BSD 4 97 7 4 7356 Scanner...
Page 623: ...7356 Scanner 4 97 7 5 1 2 DC Power Generation BSD...
Page 624: ...4 1 Main Drive Motor Control 4 1 Main Drive Motor Control BSD 4 97 7 6 7356 Scanner...
Page 625: ...4 2 Mechanical Power 7356 Scanner 4 97 7 7 4 2 Mechanical Power BSD...
Page 627: ...6 1 Document Illumination 7356 Scanner 4 97 7 9 6 1 Document Illumination BSD...
Page 628: ...6 2 Image Projection 6 2 Image Projection BSD 4 97 7 10 7356 Scanner...
Page 629: ...14 1 Communication 7356 Scanner 4 97 7 11 7 12 14 1 Communications BSD...