IBM 1220 - Manual (Page 78)

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Change
What this message means:
The printer is requesting that a different type of paper be loaded in one of the input sources.
What you can do:
Change the paper type in the specified source.
See also:
Loading the trays ; Setup Guide
Change Invalid Refill
What this message means:
The printer has detected a refilled Prebate cartridge.
What you can do:
Remove the indicated print cartridge and install a new one.
See also:
Replacing print cartridges
Check
Connection
What this message means:
The specified device is either not fully connected to the printer or is experiencing a hardware
failure.
What you can do:
• Reestablish communication by removing the specified device and reattaching it to the printer.
• Press Go to clear the message and continue printing.
• In the case of a hardware failure, turn the printer off and back on. If the error recurs, turn the
printer off, remove the specified device, and call for service.