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Brother HL-820 - User Manual

Brother HL-820
116 pages
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SERVICE MANUAL
MODEL:HL-820/1020/1040/1050
R
LASER PRINTER
Apr. ‘98
84U006BE0

Table of Contents

Questions and Answers

  • J
    jeffreybuckleySep 23, 2025
    How to fix ghost images on my Brother Printer?
    • W
      Wanda PenaSep 23, 2025
      To fix ghost images on your Brother Printer, change the driver setting from the current mode to the normal mode.
  • D
    derek75Aug 25, 2025
    What causes my Brother Printer to print all black?
    • J
      Jessica Lewis DVMAug 25, 2025
      If your Brother Printer is printing all black, it could be due to: * Corona failure, which may require replacing the drum unit or cleaning the terminals in the printer and on the drum. * A harness connection issue between the scanner unit and the panel sensor PCB, which would need checking. * Failure of the high-voltage power supply PCB, main PCB, or panel sensor PCB, all requiring replacement.
  • J
    Jason DelgadoAug 25, 2025
    How to fix a Brother HL-820 Printer that is printing too faintly?
    • J
      John JonesAug 26, 2025
      If your Brother Printer is printing too faintly, consider the following: * Ensure the printer is on a flat surface. * Remove and gently shake the drum unit horizontally. * Clean the scanner window with a dry tissue. * If problems persist, the scanner unit may need replacement.
  • A
    Anita McguireAug 27, 2025
    Why is my Brother Printer printing too light?
    • A
      Allison FloresAug 27, 2025
      If your Brother Printer is printing too lightly, it could be due to several reasons: * Toner sensing failure on the printer side, which may require cleaning the toner sensor and checking its connection. * Toner sensing failure on the toner cartridge side, which suggests replacing the toner cartridge. * Drum connection failure, which needs cleaning the contact electrodes in both the printer body and on the drum unit. * High-voltage power supply PCB failure, panel sensor PCB or main PCB failure, or scanner unit failure, all requiring replacement of the respective parts.
  • A
    andrew60Aug 27, 2025
    What to do if the toner lamp is lit on my Brother Printer after installing a new toner cartridge?
    • E
      erickiddAug 27, 2025
      If the toner lamp is lit after installing a toner cartridge in your Brother Printer, replace the cartridge with a new one.
  • T
    Troy BrownSep 15, 2025
    What causes downward fogging of solid black on my Brother HL-820?
    • R
      rjohnsonSep 15, 2025
      If you observe downward fogging of solid black on your Brother Printer, it may be necessary to replace the drum unit or the high-voltage power supply PCB.
  • L
    Laura GarnerSep 12, 2025
    How do I remove black vertical streaks in a gray background on my Brother HL-820?
    • R
      robertrodriguezSep 13, 2025
      If you're seeing black vertical streaks in a gray background on your Brother Printer, clean the scanner window to remove any translucent stains.
  • T
    Todd PattersonSep 14, 2025
    How to fix horizontal lines on Brother HL-820 Printer output?
    • O
      ofowlerSep 14, 2025
      To fix horizontal lines on your Brother Printer output: * Clean both SR electrodes. * Check the SR connection. * Check the connection between the shaft and the ground contact of the feed roller.
  • E
    Elizabeth McbrideSep 5, 2025
    Why is there dirt on the back of paper from my Brother HL-820 Printer?
    • D
      durhamjeffreySep 5, 2025
      If you notice dirt on the back of paper from your Brother Printer, clean the pressure roller of the fixing unit. If the dirt is from within the drum unit, replace the drum unit.
  • E
    Emily HerreraSep 3, 2025
    How to resolve black spots on printouts from my Brother HL-820 Printer?
    • M
      Megan RobertsonSep 3, 2025
      To resolve black spots on printouts from your Brother Printer: * If toner remains stuck on the drum unit, gently wipe it off with a cotton swab. * Check and clean the heat roller with a cloth dampened with alcohol; consider replacing the fixing unit. * Replace the high-voltage power supply PCB if necessary.

Brother HL-820 Specifications

General IconGeneral
BrandBrother
ModelHL-820
CategoryPrinter
LanguageEnglish

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