User's Manual
36
Chapter 2 Control Panel
LCD
The LCD is a 2 line by 16 character per line reflective display with a light 
emitting diode (LED) backlight. The LCD displays system information on the 
SLPA when performing system set-up procedures, print batch status during 
operation, and system information in a fault condition.
Keypad
The keypad is used to place the SLPA in operation, to perform calibration or 
testing, or to modify the systems operating parameters.
The keypad functions as two key groups: SLPA control when the SLPA is 
online, and menu option setting when the SLPA is offline. The use of one key 
group will not interfere with the use of the other key group. The function of 
each indicator and key is defined in Table 1.
Table 1. Control Panel Keys
Indicator or 
Key
Description Online Mode Offline Mode Menu Mode
Online Status 
indicator
Indicates when 
SLPA is online, 
offline, or in fault 
condition.
Light is on when 
online, ready to 
print, and accept 
data from host.
Flashes during 
fault condition.
Light is off when 
SLPA is offline.
Flashes during 
fault condition.
Light is off.
Flashes during 
fault condition.
Liquid Crystal 
Display (LCD)
A 2 line by 16 
character per 
line reflective 
display with a 
light emitting 
diode (LED) 
backlight.
Displays 
ONLINE, the 
interface type, 
and emulation in 
use.
During a fault 
condition, 
displays specific 
fault message 
and required 
action.
OFFLINE
During a fault 
condition, 
displays specific 
fault message 
and required 
action.
Displays 
OFFLINE, a 
Main menu and 
submenu, or 
option.
During a fault 
condition, 
displays a 
specific fault 
message and 
required action.
Pause key Switches the 
SLPA between 
online and 
offline modes.
Pressing this 
key when the 
SLPA is online 
takes the SLPA 
offline.
Pressing this 
key when the 
SLPA is offline 
places the SLPA 
online.
Takes the SLPA 
offline.










