It is not possible to enter the password using the controls on the front of the unit.
What you could try is removing the aerial. Humax recommend that you only remove or connect the aerial while the 9150T is switched off (i.e. with the power off).
E.g. if you want to reset the settings but the 9150T is not responding very well to the remote:
1. Power OFF the Humax box
(Preferably from stand-by remove the plug from the mains or switch off at the rear of the Humax box)
2. Disconnect the Aerial cable (Labelled Antenna In)
3. Power ON the Humax box (Reverse of step 1.)
4. Press the MENU button on the remote
5. Select INSTALLATION
6. Enter your password (Default = 0000)
7. Select DEFAUT SETTING from the menu
8. You will now see a message: “All Setting values will be returned to the initial values. Do you want to reset all setting values?” - Select YES
9. Enter your password (Default = 0000)
NS
November 2012