Micros Systems Workstation 5, Руководство по обслуживанию

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2-24 Workstation 5 Field Service Guide
Workstation 5 System Board Technical Descriptions
Point Of Sale Interfaces
Receiving Data from the Rear Display
To selectively receive data from a Rear Display attached to J2, the API sets
GPIO output
REAR_OE#
low at U10-3 to gate
REAR_RX
from J2-2 onto
U10-2, F_RXD4 .
Receiving Data from the Pole Display
To selectively receive data from a Pole Display attached to CN4, the API
sets GPIO output
POLE_OE# low at U10-4 to gate POLE_RX from CN4-3
onto U10-6, F_RXD4 .
Customer Display VCC Switch
The VCC supply to customer display connectors J2 and CN4 is controlled
by a switch consisting of Q15 and Q27.
VCC5 is fed through F2 to the
switch, controlled by the GPIO signal
VCC5_DISP
.
Normally,
VCC5_DISP
is high enabling the switch and supplying
VCC5
to
the customer display connectors. In the WS5 Diagnostics Utility LCD tab,
the [Reset] button toggles
VCC5_DISP low, then high to provide a true
hardware reset for the LCD Display. The [Reset] button is intended to reset
the LCD customer display after it receives a firmware update.
The LCD Customer Display
The MICROS LCD Customer Display is a graphics capable display that
interfaces to the host workstation through a 115Kbaud serial interface. The
display is an intelligent device, using an 8-bit controller with
programmable firmware.
Two versions of the LCD Customer Display are available for the
workstation 5.
o
A Rear or Integrated version that physically attaches to the workstation
through a cut-out in the IO door. Power and data are supplied through a
IO panel connector, attached to system board connector J2. The Rear
and Pole version share a common housing. The Workstation 5 version
uses a bracket that is not physically compatible with the Workstation 4
and Workstation 4 LX.
o
A Pole Mount version that receives power and data from IO Panel
connector CN4. When used with the Workstation 5 Stand, the pole is 6”
and can be mounted to the left, right or rear of the stand. An 18” pole
mounted to a counter surface is also available.