Page 9 of 9 DTB-AV user manual issue 1.1
The display will now show ‘Serial Num Byte’ ignore this and press the ‘ENTER’ three more times.
The display will now show ’Reset pass word to all spaces’ and the words ‘Yes’ and ‘No’. Press the
button labelled F3 to select ‘Yes’. ( This will clear any pass word numbers/letters which may have been
previously stored and used to lock-out the use of the buttons on the front of the Control Panel ).
The unit will now reset showing the words ‘Crystal Vision’ followed by other start up messages.
Note if the selection ‘Other’ is made for the Rem1U unit then this could result in the display flashing
the following message every few seconds.
Warning Power Supply
or Fan Problem
Desktop box does not have any plug-in power supplies so this message does not apply .
To stop this message being shown, ensure that the correct selection is made for Front Panel Type.
Maintenance
CAUTION These servicing instructions are for use by qualified personnel only. To reduce risk of
electric shock, do not perform any servicing other than that contained in the Operating Instructions
U
nless you are qualified to do so. refer all servicing to qualified service personnel
.
Replacing the mains input fuses
The mains input fuse are fitted inside the IEC 320 connectors at the rear of the Desk Top Box. A spare
fuse is also stored inside the connector. The fuse can only be accessed when the power cord is
disconnected. The sequence is as follows: -
1.
Disconnect the power cords from the rear of the Desk Top Box.
2.
Using a flat bladed screwdriver or similar tool gently lever out the fuse drawer from the relevant
IEC connector using the tab visible at the bottom of the connector depression.
3.
Remove the defective fuse and replace with either the spare fuse or with a 2A, 250V time delay
fuse.
4.
Replace the fuse drawer and reconnect the power cords.
If a fuse blows repeatedly this indicates a fault either in the internal power supply or elsewhere. Return
the Desk Top Box to the manufacturer or dealer for repair.
End of document.
