Definition of the Chain-Link Codes
A chain-link is a numeric code represented as a pair with the chain first and the link
second. The “chain” is a 2-digit identifier representing a major or higher level sub-
assembly. The “link” is a 3-digit identifier representing a specific failure mode.
The chain-link is used to identify or address a specific component within the printer.
The chain points to a counter or component assembly, and the link points to a specific
item in that assembly.
All chain-link codes and their respective definitions can be found in the Appendix
under "Missing Chain Link Codes Definitions" on page A-11.
Using the Troubleshooting Procedures
1. Each Step in a troubleshooting procedure instructs you to perform a certain
action or test. The steps are to be followed in the order given until the problem is
fixed or resolved.
2. The Actions and Questions box contains the procedures to perform and the
resulting actions you must follow to isolate the problem.
■ When a procedure instructs you to test a component using service
diagnostics, go to the "Service Diagnostic Tests Table" on page 4-3 for a
detailed description for testing printer components.
■ Troubleshooting procedures may ask you to take voltage readings or test for
continuity at certain test points within the printer. For detailed diagrams, see
"Wiring Diagrams" on page 10-1 for complete information on test point
locations and signal names.
3. The Actions are followed by a Question. If your response to the question is
“Yes”, then follow the instructions for the “Yes” reply. If your response to the
question is “No”, then follow the instructions for the “No” reply.
4. The problem will be isolated to an adjustment, calibration or a printer component
that needs replacement, see the following chapters for more information.
■ Chapter 6 "Adjustments and Calibrations" on page 6-1.
■ Chapter 8 "Service Parts Disassembly" on page 8-1 provides detailed steps
for removing and replacing all major parts of the printer.
■ Chapter 9, "Service Parts Lists" on page 9-1 details the location, quantity
and part number for all spared parts of the printer.
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