You may be better off posting in one of the dedicated Humax forums.
I did find this, which may be useful:
http://www.redeyedmonster.co.uk/humax-pvr-9200t-freezing-locking/
http://forums.digitalspy.co.uk/forumdisplay.php?f=119
https://www.scribd.com/document/29693633/Humax-9200T-Replacing-the-Clock-Module
XXX
November 2016