Specifications

2.4.2 Shuttle Control Panel Interface (SCPI)
The SCPI is secured to the top cover. It provides the electrical connection
between the external and internal control panels.
There are no active components on this board.
2.4.3 Shuttle Matrix Display Panel (SMDP)
The SMDP board is secured beneath the inner control panel, which is
mounted on top of the shroud. This board contains the following:
• Three 7-segment displays
• An audio alarm
• A printer initialization switch
The SMDP board sends information to, and receives information from,
the SMSM board in the logic module. It is the interface for the 10 mem-
brane switches onthe inner control panel, and provides the electrical con-
nections to the three membrane switches in the external control panel.
2.4.3.1 Seven-Segment Displays
This display is used to indicate:
• Printing parameters
• Error Codes
• Font error codes
• Specific ‘‘not ready’’ reasons
Also included in each display is a period. This is used to indicate that
the code refers to a mode of operation or test pattern.
2.4.3.2 Audio Alarm
The audio alarm provides:
• Audible feedback to the operator when the membrane switches are
operated
• A warning when the printer log detects an alarm condition
THEORY OF OPERATION 2–9