Xerox Document Workcenter 150 Service Manual page 43

3 Image Quality Repair Analysis Procedures
Section Contents
Title
Page
lntro&ction.. _ _ _ _ _ _ . _ _ _ _ . _ _ _. _. _ _ 3.1
Measureme"ts . _. _ _ - - -. _ _ _ _ -. _. _ _ -3-1
Image Quality Test Pattern - - - - - - - - - - -3-2
IQ RAP 1 Entry Image Quality RAP - - - - - 3-3
IQ RAP 10 Blank or mostly blank print - - - - -3-4
IQ RAP 12 Vertical/horizontal deletionsllines 3.6
IQ RAP 14 Dark image 2 inches wide - - - - - - 3.7
IQ RAP 15 Black with thin deletions - - - - - -3-7
IQRAP16 Blackprint-----------------3-S
IQ RAP 17 MisregistrationlSkew- - - - - -3-9
lQRAP18 Printdensity---------------3-10
IQ RAP 23 Gray or mostly gray copy - - - - 3.11
IQRAP30 V-bars ___..____.______.._ 3-1,
IQ RAP 31 Blurry, Fuzzy I Smudged Image- 3-12
IQ RAP 32 Image quality is unacceptable - - 3-13
Introduction
The Image Quality (IQ) section is used to identify
image quality problems. It conlains the
Introduction, Image Quality samples, and Image
Quality RAPS.
The sample is a reproduction of the image quality
test pattern 82P151.
Compare the image quality of the samples
produced in section 1, System Checks, with the
82P151 test pattern in your kit. This will identify
any image quality defects which may have been
produced during Off-line or On-line System
Checks.
Use the Image Quality RAPS to further diagnose
machine problems.
In the YIN C/es/No) steps of the RAPS. a Yes
response will lead you to the next step. A No
response will indicate a corrective action, or will
direct you to another step. When the ihdicated
corrective action 'has been completed, go to
Section 1 and restart the Syste& Check to verify
that the problem has been corrected.
Measurements
Power and signal grounds are connected to frame
ground, therefore all circuit troubleshooting can
be performed using the metal frame (chassis) as
the grounding point.
If more information is
needed to locate connectors or test points, refer
to section 7.
NOTE: Make aft voltage measurements
to ground unless instructed to measure
from "W to "xx':
Unless specified otherwise. the following voltage
tolerances are used within this section:
St&d. __ _ _. . - - -. _. . _. _. . _ .,&as"&
+5.0VDC---------t4.75VDCto+5.25VDC
+12.0 VDC - - - - -+ 10.8 VDC to + 13.2 VDC
-12.0 VDC - - - - - - -10.8 VDC to -13.2 VDC
+ 42.3 VDC - - - -+37.8 VDC to +46.2 VDC
O,OV,,C .____..__._.. _ . ..__._ +O,s,,DC
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WorkCenter 150
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