User manual

Preventive Maintenance
ProMaster 2500 User Manual 5-35
Adjusting the ADC Optic
on the Thermal Printer
The ADC optic detects the leading edge of the label on the liner. When
using Auto ADC), the software calculates an ADC value and no manual
adjustment is required for variations in batches of labels. Auto ADC
turns on the ADC optic and reads the amount of light passing through
the label and liner to establish a reference level of light. When the ADC
optic detects a light level above that reference value, the 2500 assumes
that it is detecting a gap between labels where only the liner is blocking
the optic’s light beam.
You can manually check and adjust the ADC value using the 2500’s
Diagnostic tests. You may need to manually adjust the ADC optic if you
have trouble with label calibration, label position on the device, or
location of printed text on the label.
Figure 5-13
Adjusting the Dot Matrix Printer ADC Optic During Calibration
1770-2
LABELING STATION
PRINT HEAD
SPRING CLIP
(1 of 2)
RIBBON
ADVANCE
KNOB
RIBBON
CASSETTE
PRESS BEARINGS
PLATEN
APPLICATION PLATE (Raised)
LABEL DRIVER ROLLER
PINCH ROLLER 2
PINCH ROLLER 1
LABEL ADVANCE
KNOB
LABEL REEL COVER
LABEL
SENSING
OPTIC
ADC OPTIC (1 of 2)