OKIDATA OL400e Series, Service Manual

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Service Manual for OL400e/OL410e/OL410e-PS
Chapter 3 Maintenance & Disassembly
3.4.04 LED Head Unit
Note: The information in this section is also covered in TSB 5616( ).
Refer to Section 4 of this Service Handbook for additional troubleshooting information.
The LED head unit should be cleaned when any of the following occur.
- A new toner cartridge is installed.
- Vertical white lines or stripes (voids and/or light printing) appear on the output.
- Light print
- "Splotchy" print
- Fuzzy print
- White "spots" where there should be black
To clean the LED head, follow either of these procedures.
LED Lens Cleaner Pad
- Use the cleaning pad supplied in the toner cartridge kit.
- Slide the cleaner pad across the lens array several times to clean
the head. Use a clean portion of the pad each pass.
- Discard the used pad.
Isopropyl Alcohol
- Locate a soft cotton swab.
- Locate isopropyl alcohol (90%). Follow all direction and cautions
for use on the container.
- Apply a small amount of alcohol to the cotton swab.
- Gently move the swab across the face of the LED lens.
- Use a clean section of the swab on each pass.
- Move the swab in one direction.
- Lift the swab from the lens surface between each pass.
- Apply ONLY enough pressure to remove loose toner. DO NOT scrub or scratch the LED.
DO NOT allow alcohol to spill or drip inside the printer, on any components, or onto the image drum.
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business
Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)