7. Maintenance
This chapter describes how to maintain and operate the machine.
Restricting Machine Functions
This section explains how to lock keys on the control panel to prevent general users from changing
settings and performing certain functions.
By locking certain control panel keys, you can prevent users other than the administrator from doing the
following:
• Pressing the [
/Menu] key to display the menu
• Press the [Job Reset] and [Form Feed] keys at the same time to perform the no-fuss head cleaning
• Pressing the [Job Reset] key to cancel print jobs
• Pressing the [Power] key to turn the machine off
Locking the Keys
Use this procedure to lock the control panel keys.
1. Simultaneously press and hold down the [ /Menu], [Escape], and [#Enter] keys for 3
seconds, and then [#Enter] key two times.
• If you press a locked key, "Panel Locked/Cannot use" appears.
• If an error occurs while the keys are locked, certain keys are automatically unlocked to allow you
to clear the error.
Unlocking the Keys
Use this procedure to unlock the control panel keys.
1. Simultaneously press and hold down the [
/Menu], [Escape], and [#Enter] keys for 3
seconds, and then [#Enter] key two times.
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