Oki ES 1624n MFP - Manual (Page 135)

Troubleshooting • 135
Faint shading on unprinted sections
Possible cause Remedy
Paper has been
affected by static
electricity. Store paper within specified temperature and
humidity levels (see “Specifications” on
page 142).
Paper is too thick. Use recommended paper (see “Media
Recommendations” on page 10).
Toner is low. Replace toner cartridge (see “Toner Cartridge
Replacement” on page 72).