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Problems/Solutions For Okidata OkiLaser 400 A
DocumentID: 637928
Revision Date: 29-Feb-96 3:04:46 PM

The information in this document applies to:
WordPerfect® 5.1 for DOS

Problem

Symptoms: Error: Page Buffer Overflow

Cause:
A page buffer overflow occurs when:
1.      The printer has received too much data for a single page.
2.      A high resolution graphic is too large (over one half page at 300dpi for a 512K memory printer).
3.      Too many high resolution graphics are printed.
4.      High resolution graphics are combined with downloadable soft fonts.

Work around:
1.      Change the graphics and text quality to draft.
      On a stand-alone PC, turn the Print to Hardware Port On. (Shift-F7,S,3,7) (WP 5.1 DOS only)
2.      Change the complexity of the graphics. For example, since lines in a table are graphically created, remove as many lines as needed.
3.      Check to see if the customer is using soft fonts. If so, check the downloading method (for WP 5.0 DOS, Shift-F7, S, 3, 5, highlight Soft Fonts and press Enter, and look for the fonts in the list) (for WP 5.1 DOS, Shift-F7, S, 3, 4, highlight Soft Fonts and press Enter, highlight the font group and press Enter) (for WP 5.1 Win using a WP driver, File|Select Printer|Setup|Cartridges/Soft Fonts|Soft Fonts, click on the font group). If marked with a + (plus), it's OK. If marked with an * (asterisk), mark the font with both an * and a +. This will kick * fonts out of the printer memory if the font is not needed for the print job, which frees up extra memory. Then reload the fonts after the print job is done.
4.      Separate the document into smaller files.

Problem:
Error: Receive Buffer Overflow

Cause:
A receive buffer overflow error occurs when the computer continues to send data after the printer's receive buffer is full.

Work Arounds:
1.      Change the graphics and text quality to draft.
2.      Check for soft fonts. If the soft fonts are marked with an * (asterisk), mark those same fonts with the * and a + and reinitialize the printer. This way fonts which are not needed for the print job are released from the printer memory for the print job and then reloaded.
3.      If working on a stand-alone machine (for later releases of WP 5.1 DOS only), set the Print to Hardware Port to Yes (Shift-F7, S, 3, 7). Some machines may not allow WP to address the printer port directly, so this may or may not help.
4.      Reduce the complexity of the document (unnecessary font changes, graphics, etc.).

Problem:
Error: DLL Buffer Overflow

Cause:
A DLL buffer overflow occurs when too much memory is required by downloaded fonts. This happens because too many large fonts are requested, or because the buffer size has been reduced by high resolution graphics, which must share the total available (printer) memory.

Work Arounds:
1.      Check the soft fonts, and all fonts which are marked with an *, mark with an * and + and reinitialize the printer. That way if a print job requires more memory than what is available, the printer can then unload fonts not needed for the print job, free up additional printer memory, then reload the fonts after the print job.
2.      If the fonts are marked with a +, select a slightly smaller font for each occurrence.
3.      Reduce the graphics and text quality to draft.

Problem:
Error: Font Card Font Not Found

If the Font Card Font Not Found message appears, customers should press the On-Line button until the printer is off-line. Then place the correct font card in the correct slot and press the On-Line button again. If they do not have the correct font card, take the printer off-line and press the Recover button. The page will print in the closest available font. On the OL 800 printer, this message would be preceded by either Upper or Lower.

Problem:
Error: Font Card Removed On-Line

If the Font Card Removed On-Line message appears, a font card has been removed while the printer was running. The font card should be replaced and the printer should be put back on-line.

Problem:
Error: Font Card Check

If the Error Font Card Check message appears, the printer is unable to read the font card. The font card should be reinserted and the printer put back on-line. If the error continues, customers may have a faulty font card. Remove the card and contact the service representative.

Problem:
Blank sheets or sheets with black stripes print.

Cause:
The image drum cartridge may have been exposed to light. Solutions: Leave the drum cartridge in total darkness for several hours. If this fails to restore it, see your local service representative.

Problem:
Pages print blank.

Causes:
1.      The transfer wire is broken, dirty or defective, so no charge is delivered to the drum.
2.      Empty toner cartridge.
3.      Entire page prints faintly.

Solutions:
1.      Clean transfer wire. If broken or defective, have unit serviced.
2.      Replace the toner cartridge.
3.      Toner cartridge is empty. Change toner cartridge. Pages get fainter and fainter after toner is used up.

Problem:
Page has a gray background.

Cause:
Static electricity, generally from dry, cotton fiber papers, causes toner to stick to background.

Answer:
Change papers to an acceptable laser bond or use a humidifier.

Problem:
The page prints solid black.

Cause:
Corona wire is broken or defective, so no charge is applied to the drum.

Answer:
Contact your local service representative.

Problem:
Page prints with repetitive marks.

Causes:
1.      Defective image drum cartridge causes repetitive marks every 3.7 inches due to surface nicks and scratches.
2.      The rollers are dirty, creating "pockmarks".

Answer:
Contact your local service representative.

Problem:
An oblong area of faint print appears on each page.

Causes:
1.      "Dropout" caused by using cotton bonds in high humidity.
2.      A dirty transfer wire.
3.      The toner is low.

Solutions:
1.      Change paper stocks.
2.      Use a dehumidifier.
3.      Clean the transfer wire.
4.      Check the toner.

Problem:
Vertical white streaking or faint areas on page.

Cause:
1.      Toner is low and does not distribute properly
2.      The LED head is dirty or the drum needs replacing.

Answer:
1.      Replace the toner cartridge.
2.      Clean the LED head.
3.      See your local service representatives about the drum.

Problem:
Printing horizontal black lines on the page.

Cause:
The fusing unit is dirty.

Answer:
Replace the fuser pad.

Problem:
Printing vertical black lines.

Cause:
Scratched image drum or other hardware problem.

Answer:
Consult with your local service representative for advice.

Problem:
Printing smeared, vertical black lines.

Cause:
Dirty or worn fuser roller cleaner.

Answer:
Replace the fuser cleaner.

Problem:
Printing distorted print.

Causes:
Paper path, LED assembly, or fusing unit problem.

Solutions:
Contact your local service representative.

Problem:
Smeared or blotched print.

Cause:
Defective fuser assembly or other hardware problems.

Answer:
See your local service representative.

*This information is given as a troubleshooting option.

Answer:

Details:


Product specifications, packaging, technical support and information (*Specifications*) refer to theUnited States retail English version only. Specifications for other versions may vary. All Specifications, claims, features, representations, and/or comparisons provided are correct to the best of our knowledge of the date of publication, but are subject to change without notice.OUR MAXIMUM AGGREGATE LIABILITY TO YOU AND THAT OF OUR DEALERS AND SUPPLIERS IS LIMITED. IT SHALL NOTEXCEED THE AMOUNT YOU PAID TO ACCESS THE INFORMATION. SEE LEGAL DISCLAIMER.