Grainy Image - Printronix L7032 User Manual

6.2.12 Grainy Image

1. Make sure that all consumables are installed in the printer.
2. Make sure that all consumables are within their expected lifespan by checking the
information in the maintenance & service log. Replace any consumable that has been in use
longer than its expected lifespan. Follow the instructions in Chapter 4, Replacing
Consumables.
3. Clean the printer. Follow the instructions in 5.5 Weekly Cleaning Procedure and 5.6 Monthly
Cleaning Procedure.
4. Check the surface of the paper. Paper with a rough surface may reduce print quality. To
determin e whether rough paper is causing the problem, print on smooth 20 lb. (75 gsm) bond
and see if the print quality improves.
5. Check to s ee whether the paper is damp.
If the pape r is damp, replace it with dry paper.
Note: For information about proper storage conditions for paper, see Section 3.3 Stori
Paper.
6. Replace the transfer charger unit with a new transfer charger unit.
If replacing the transfer charger unit does not fix the problem, reinstall the old transfer
charger unit in the printer.
7. R eplace the OPC module by following the instructions in Section 4.8 Replacing the OPC
Module.
Note: Because the OPC module may not be the cause of the problem, cover the O
m odule with an opaque covering (such as a cardboard box, a large sheet of paper,
or a large cloth) when you remove it from the printer. The covering protects the
OPC module from damage by exposure to light.
If replacing the OPC module does not fix the problem, reinstall the old OPC module in the
printer.
8. Call a service technician.
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