24
Operator’s Manual
Edition 7/06
Cleaning and Maintenance
MACH4
8.4
Cleaning Label Sensors
The label sensors can be soiled by paper dust. This can impair the detection of the start of the label or
the print marks (see section 6.3 on page 20).
⇒
Clean the label sensors with a brush, or with a cotton swab dipped in isopropyl alcohol.
8.5
Changing the Printhead
Fig. 10:
Changing the printhead
1. Open the cover, fig. 1 (9) and hinge down the control panel, fig.1 (16), press the release button, fig.1
(14) and hinge the print module up.
2. Press against the printhead holder (5) from below, and pull the holding lug (1) over the web (2) and
through the slit (3). The printhead holder (5) is held down by two springs (10).
3. Pull the printhead holder (5) out of the guide (8) on the print module.
4. Disengage the printhead (11) by unscrewing the screws (4) from the printhead holder (5).
5. Detach the printhead cables (6) and (7) from the printhead (11).
6. After exchanging the printhead (11), attach the printhead cables (6) and (7) to the new
printhead (11).
7. Attach the printhead (11) to the printhead holder (5) by screws (4).
CAUTION!
Do not damage the light barrier!
⇒
Do not use sharp objects or solvents for cleaning the light barrier.
2
3
5
8
6
4
10
9
7
11
4
1
9
1
CAUTION!
Protect the printhead against damage by electrostatic dischargement !
⇒
Put the printer on to a grounded conductive surface!
⇒
Ground yourself during printhead replacement for example using a grounded wrist-strap!
⇒
Do not touch the connector pins of the printhead by naked hands !