Push the front to open. To remove the tray, open fully, then press down on the release plate (arrowed in illustration) and pull to remove.
The digital clock display illuminates constantly and dims automatically for night time viewing, when the side lights are illuminated.
To adjust the time, use a ballpoint pen or similar probe to press the hour (left hand) and minute (right hand) controls, until the correct time is displayed.
NOTE: The clock will need to be reset if the battery is disconnected.
Pressing both hour and minute controls simultaneously ‘zeroes’ the display.