I have a Gestetner Dsc224 and have a sc672 error message

SOURCE: Gestetner DSm615 giving error SC:552,How do i clear it

Are you sure of the code? I don't have the exact manual for that, machine but the number seems strange. "5xx" errors are usually related to the fuser, so could be a bad lamp, thermistor, or fuse. see note to reset (if there is not a problem) as follows:
There are 2 levels of service call conditions.
Level Definition Reset Procedure
"A"
To prevent the machine from being
damaged, the SC can only be reset by a
service representative.
The copier cannot be operated at all.
Enter SP 5-810 (SC code reset) and
select “1”. Then hold down the Original
type key and the OK or ! key at the
same time (this does not require the
main switch to be turned off and on).

SOURCE: Gestetner DCS424 error message: replace used toner bottle

There are 2 waste toner cartridges, be sure to empty these 2 cartridges . If you remove the waste toner in both cartridge it will automatically clear the error message.

SOURCE: Reset admin password for web-interface

If you're 'ok' with resetting all the network info such as Ip address, Etc - not to mention the scanner locations, fax speed dials etc. then you can email me. I will give you the instructions to reset "NCS" which will set all network settings to default, but I haven't got the time to walk you through all of the reconfiguration settings - - you're on your own there.
[email protected]

I don't post service mode adjusmtents here

SOURCE: Gestetner DSC224 Scanning and Fax Issues

scanrouter? disable delivery server from scanner menu

SOURCE: I HAVE PROBLEME OF GESTETNER DSC224 ERROR COPIER

Fuser oil end On the rear of the copier is a cover that is near the lower center of rear cover you need to add silicone oil (fuser oil) to the copier and cycle power. Oil P/N A2579550

-Carl, please let me know if this helps.