96 Chapter 6 Troubleshooting C4170-90959
Troubleshooting with Control Panel Messages
Control Panel LED Messages
LED patterns provide both status and error messages. The LEDs can be in any one of the
following states:
The following Control Panel LED patterns indicate various conditions of the printer in
preparation for, or during, printing. If the Attention LED is on, the printer is experiencing an
error. The messages are grouped according to error type - status, attendance, continuable,
service, and accessory errors. In many cases the error will provide direct information about
the defective component.
If the printer’s LEDs indicate a continuable, service, or accessory error, secondary
information is available by pressing the Go and Job Cancel buttons simultaneously.
Releasing the keys will return to the original error state. Transitions in error states are
marked by the LEDs flashing off briefly before displaying the next pattern.
NOTE: Secondary information about 79 service errors (unrecoverable firmware errors) is not included
in the scope of this document. If a 79 Service error occurs, replace the Formatter.
See “Continuable, Service, and Accessory Errors” (page 100) for secondary information
about each of these three types of errors.
Job Cancel
Button
Attention LED
Ready LED
Go LED and
Button
OnOff Blinking
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