Avery Berkel CX20 SERIES, Service Manual

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12 — Displays (CX20)
12–3 CX20/CX30/CX34 Service Manual
12.1 Description
There are two displays used on the CX20 unit, one on the vendor side (front) of
the unit and one on the customer side (rear). The two display units are identical
but, by software control, operator–prompt data is not displayed on the customer
display.
The CX20 W has only one display, which is on the vendor side.
The display on the vendor side is supplemented by an LCD unit (refer to
Section 2).
Figure 12.1 Display – FIP Type (CX20)
Each display is a fluorescent indicator panel (FIP) manufactured as a strip–line
unit. It has 20 numeric character positions arranged in a single, horizontal line.
The characters are 12,7 mm (0.5 in) high. When a character segment is
energized, it is displayed in a bright green colour; when a character segment is
not energized, it is almost invisible.
Each display is clipped to the main PCB by two plastic display brackets. The
brackets are different for the front and rear positions. The display face is visible
through an aperture in the unit case.
On the tower mounted version the customer display is fitted inside a housing
which is mounted on two columns. The columns are fitted at the rear of the
machine.
Each display has an integral ribbon cable terminated by a flying in–line
connector at the free end. The main PCB has two electrical connectors, one for
each display.
Each display is driven by display driver circuitry on the main PCB. The display is
strobe–scanned by the same scanning source as that which scans the
keyboard.