Introduction
The Xerox 7356 Scanner is designed to function
as an Information input Terminal (IIT) for
several modular systems, as well as to scan
images into a standalone host computer for
storage and later disposition. The scanner
relies on software in a host computer to provide
a user interface (Ul) and the display of fault
indicators.
In the case of the ES8150 or XPC, this Ul
resides in the host Personal Computer (PC)
inside the System Interconnection Module (SIM)
or Xerox Productivity Centre (XPC).
in the case of the 8830 DDS, the software
resides in the 8830 Controller. A control panel,
connected to the Controller and mounted on the
top cover of the Scanner, acts as the user
interface.
The Service Call Procedures, Section 1, are
designed to assist the Service Representative to
identify faults, perform the necessary corrective
action, and perform the correct Maintenance
Procedures. The Service Call Procedures are
designed to be used with the 7356 Service
Manual and are the entry level for all service
calls.
The Service manual for the product is the entry
point for the fault isolation process at the
systems level. Begin the service call with the
Systems Level Call Flow Diagram within the
Service Call Procedures, Section 1. The Call
Flow Diagram will help you isolate the problem
down to the system module. The diagram may
direct you to a section in the 7356 service
manual or direct you to other service manuals to
continue identify and repair the problem.
In the case of a standalone host computer/7356
configuration, the Customer Service
Representative must isolate the fault to the 7356
Scanner and then refer to the Call Flow Diagram
in the 7356 Service Manual.
• Call Flow Diagram - This diagram outlines
the major activities that are performed when
a service call is made. The Initial Actions
assist the Service Representative through
the customer interface and help to identify
the problem. The diagram also directs the
Representative to verify, classify, repair the
problem, and perform the correct
Maintenance Procedure.
« Message Display Entry Chart - This chart
contains a list of Messages, their Cause,
the corresponding Clearance Procedure,
and the Go to reference. The charts are
designed to direct the Representative to the
appropriate Clearance Procedure. If the
Procedure does not clear the Status Code,
the Representative refers to the Go to
column. This column contains the
information to be followed in order to repair
the problem. When the problem has been
repaired, refer to the Call Flow Diagram
and continue the Service Call.
• Call Back - After correcting the problem
that resulted in the call back, go to the Final
Action and perform the activities indicated.
• Maintenance Procedure • This procedure
contains the tasks that are performed after
the main cause for the service call has been
corrected. This tasks identified in the
procedure are performed at the Interval
indicated. The Interval may be after a
specific number of feet, for example, 10K.
The Interval may also be specified as a
Normal Call (NC).
Normal Call activities are designed to be
performed on all service calls. The specific
interval and Normal Call activities include
cleaning and replacing parts that require
more frequent service and inspections. The
Maintenance Procedure activities are
designed to restore the device to an initially
clean and functional condition.
• Final Action - The purpose of this
procedure is to record the media feet count
and to make a record in the machine log
book of the service activities that were
performed. Final Action is designed to test
the image quality under stress and repair
any image quality problems. A copy of test
pattern 82E5980 or 499T286 is made and
compared with the image copy quality
specifications located in Section 3 of the
manual.
Introduction
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7356 Scanner
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