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When the printer is in the special diagnostics mode, the four tests listed above appear in the
menu and are available to be run. To access other diagnostic tests or to leave the special
state, press the S
TOP
button, and then select Exit diagnostics. The printer will reset itself,
and then return to the normal state.
NOTE
A good understanding of how the printer operates is required to use the engine diagnostics
successfully. Before proceeding with these diagnostic tests, be sure you understand the
information in Chapter 5 of this manual.
Diagnostics tests
Different tests can be used to isolate different types of issues. For component or noise
isolation, you can run the diagnostics with the left, right, and rear covers removed. Do not
operate the printer with the front door open. Operating the printer with the front door open
will cause the gears on the right side of the printer to become out of sync with the front door.
Upon closing the front door, the gears on the right side and print cartridges can be damaged.
WARNING!
Take caution when performing printer diagnostics to avoid risk of injury. Only trained service
personnel should access and run the diagnostics with the covers removed. Never touch any
of the power supplies with the printer turned on.
ENWW Diagnostics 435