Microcom 438 - Manual (Page 170)

Chapter 10 Printer Maintenance
438 Operator’s Manual - 880052-0100 10-5
Figure 10-5 Internal Cleaning
10.4 Print head Maintenance
If print quality has not improved after cleaning using a thermal cleaning card or if one is not
available, foam or cotton tipped swabs dampened in isopropyl alcohol may be used. Follow
the steps below for the proper cleaning procedure:
1. Remove any installed media.
2. Turn the power to the printer “OFF.”
3. Remove the Top Cover from the printer (Figure 10-3).
4. Unlatch and raise the Print Head (See Figure 10-4).
5. With a foam or cotton tipped swab dampened in isopropyl alcohol, clean the thermal
elements by gently rubbing the swab down the length of the Print Head. Allow for the
alcohol to evaporate then repeat if necessary.
6. The Drive Roller, Peel Edge, and other basic internal cleaning may also be performed at
this time, see the appropriate sections for more information.
7. Latch the Print Head completely and reinstall the Top Cover and media.
8. Turn the power to the printer “ON.”
Print Head
Elements
Drive Roller
Peel Edge
Media Path