Avery Berkel CX20 SERIES, Service Manual

Page: 84 / 353

8 — Testing
8–10 CX20/CX30/CX34 Service Manual
8.3.5 Display test (menu option)
This test has two parts: first part checks display function; second part provides
display burn–in at manufacture. Display burn–in is not required in the field as all
new display units are supplied already burned–in. First part energizes
sequentially every display panel (and LED, if applicable) at one–second
intervals, then all panels indicate sequence 0, 1, 2, 3, 4, 5, 6, 7, 8, 9. Test runs
in continuous loop until keyswitch is set temporarily to SUPERVISOR position.
What You Do What You See
1 Select function.
DISPLAY TEST
2 Press ENTER.
BURN TIME = 2880
3 Press ENTER: Display Test cycle
begins. Each digit in the first panel
will energise in sequence. This is
repeated for each panel (left to right).
8.
4 Indicators will illuminate then
extinguish in sequence. (Top
downwards, then left to right.)
5 All the digits of each display will show
noughts, then ones, twos etc. up to
nines, in sequence.
000000 000000 000000
000000 0000000000000000
6 The Display Test cycle (in Steps 3 to
5) will continue indefinitely. To exit,
turn key temporarily to SUPERVISOR
position (all display segments are
displayed), then turn key back again
(a ’DISPLAY TEST’ report is
simultaneously printed).
DISPLAY TEST