Gp 4 Intermittent Problem Rap - Xerox DocuColor 2240 Service Manual

To execute: simultaneously press and hold the 3, the Stop, and the Power Save buttons on
the Control Panel while switching on the power. Hold the buttons down until the boot up screen
(5 circles) appears and the second circle starts to blink.
Initial issue
DC 3535/2240/1632

GP 4 Intermittent Problem RAP

The purpose of this RAP is to provide guidance for resolving an intermittent problem. This is
not an exact procedure, but a set of recommended actions that use the resources of the ser-
vice manual to help locate the cause of an intermittent problem.
Procedure
1. Check the service log. Recent service actions may provide information about the prob-
lem. For example, a component that was recently replaced to correct another problem
may be the cause of the new intermittent problem.
2. Run the machine in a mode that vigorously exercises the function that is suspected. The
machine may fail more frequently or may fail completely under these conditions. Look for
signs of failure or abnormal operation.
An intermittent problem can usually be associated with a RAP, since when it does fail, it
results in a fault code, a jam code, or some other observable symptom.
3. Using the RAP that is associated with the symptom of the intermittent problem, examine
all of the components that are referenced in the RAP. Look for:
• contamination, such as a feed roller that has a build up of dirt or toner
• wear, such as gear teeth that are rounded or have excessive backlash
• HFSI, even if they are not near or have not exceeded the SPEC LIFE or COPY
COUNT value
• wires chafing against components of the machine, especially against moving com-
ponents
• misaligned, misadjusted, or incorrectly installed components
• slow or slipping clutches; slow or binding solenoids
• damaged components
• excessive heat, or symptoms of excessive heat, such as the discoloration of a com-
ponent
• loose cables or wires
4. Using the RAP that is associated with the symptom of the intermittent problem, perform
all of the adjustments for the components or functions that are referenced in the RAP.
Check to ensure that the adjustment can be made and that there is an adequate range of
adjustment, and that it can be set to or near the nominal value. Any abnormality that is
observed may be an indication of the cause of the problem. For example, a component
can be adjusted to the nominal value, but it is at the limit of the adjustment range. This is
not normal and may be an indication of the cause of the problem.
5. Operate all of the components in the appropriate RAP that is associated with the symp-
tom of the intermittent problem with DC330 Component Control. Observe the components
for any symptoms of abnormal operation, such as a hesitation, or an unusual sound.
6. Check that the AC and DC power are within specification.
7. Get technical advice or assistance when it is appropriate. This will depend upon the situa-
tion and the established local procedures.
8. Examine the components that are not in the RAP, but are associated with the function that
is failing. Refer to the BSDs. Look for:
• contamination, such as a feed roller that has a build up of dirt or toner
• wear, such as gear teeth that are rounded or have excessive backlash
• HFSI, even if they are not near or have not exceeded the SPEC LIFE or COPY
COUNT value
02/03
6-107
General Procedures and Information
GP 3, GP 4