2500_Users_Manual - 第190页

Preven tive Maint enance 5-36 ProMa ster 25 00 U ser Ma nual Always calibrate the labels (refer to the procedure on page 5-25) afte r performing either one of the following operations: • Instal ling a ne w roll of la bel…

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)

Preventive Maintenance

5-36 ProMaster 2500 User Manual

Always calibrate the labels (refer to the procedure on page 5-25) after

performing either one of the following operations:

• Installing a new roll of labels

• Changing the ribbon

• Adjusting the ADC reference value

• Manually moving the labels

To check and manually adjust the ADC value, follow the steps below:

1. Put the 2500 in local mode.

2. Select OPTIC TEST from the DIAGNOSTIC MENU and load labels.

3. Locate the ADC optic and ensure that a label is blocking the optic’s

beam to obtain the highest ADC optic value. The 2500 should

display:

4. If a label is not blocking the ADC optic, slowly turn the label advance

knob in the counterclockwise direction to advance the liner. The

value on the display fluctuates until the label blocks the optic and the

highest value appears. Do not begin the adjustment procedure until

you are certain that a label is blocking the optic.

If the ADC value is not in the range of 190 to 200, press

LOWER CASE

while in the Optic diagnostics menu. Press

↑

↓

until the displayed value reaches 200.

5. Turn the label advance knob until the ADC optic is reading only the

liner (it should read between 120 and 170, if the liner is opaque). The

liner reading is not adjustable because the range is variable.

Return to the Main Menu by pressing

RESET

. Press

CAL

to have the 2500

run a label calibration to adjust to the new setting.

Note: Adjust the ADC reference value for the label material you are using. If

you are using both Kapton and thermal poly label material, adjust the

ADC reference value for Kapton. If you are using thermal poly label

material exclusively, you may need to make only minor adjustments.

OPTIC TEST - ADC = 200 - VAC = 23

11100000001111101111111100 ENC = 13107

5 10 15 20 25 U43 REV 1.00

Preventive Maintenance

ProMaster 2500 User Manual 5-37

Figure 5-14

Thermal Printer, Front View, Showing the ADC Label Optic

2303-1

LABEL DRIVE ROLLER (hidden)

LABEL PINCH ROLLER

LABEL ADVANCE KNOB

LABEL ALIGNMENT ROLLER

LABEL DETECTION OPTIC

LABEL ROLL

(cover removed)

APPLICATION PLATE (raised)

PLATEN

PRINT HEAD

(retracted position)

LABEL ADC OPTIC

PLATEN PINCH ROLLER