Envipco U48DFF, Service Manual

Page: 74 / 100

Chapter 5 Maintenance
5-4
5.3.4. RVM Controller Box
Follow these steps to check that the
RVM
Controller continues to function properly:
•
Check that the cover is securely closed.
•
Clean the screen on the exhaust fan. If the machine processes glass, remove the
screen and shake it out to remove the glass dust.
•
Make sure that all of the harnesses are securely connected to the
RVM
Controller
Box.
5.3.5. Display
Keep the display working well by calibrating it during each
PM
visit. Follow these steps:
1.
Go into the Diagnostic Program.
2.
Switch to the Misc tab.
3.
Tap on Calibrate .
4.
Follow the on-screen prompts.
5.3.6. Printer
Follow these tips to keep the printer in working order:
•
Keep the cover closed: It protects the print head from dirt.
•
Pull out the Print Head Lift Pin. Then, remove dirt, bits of paper, or other foreign
objects from the print head. Use canned air to blow out excess dust. Push the Print
Head Lift Pin back into position.
•
Make sure that the paper roll is level and that the paper feeds straight into the
printer.
•
You can test the printer by printing the last receipt. To do this, press the “Re-print
receipt” button as shown in Figure 5-1, “Open Door Screen,” on page 5-2.