User Guide
Table Of Contents
- Definitions of Warnings, Cautions, and Notes
- To Use the Printer Safely
- Printer Do's and Don'ts for Optimum Print Quality
- TABLE OF CONTENTS
- IMPORTANT INFORMATION: REGULATIONS
- CHAPTER 1 INTRODUCTION
- ABOUT THIS USER’S GUIDE
- ABOUT THIS PRINTER
- Checking the Components
- General View
- Features
- 2400 DPI Class Resolution
- High Speed and Color Laser Printing
- Color Advanced Photoscale Technology (CAPT)
- High Resolution Control (HRC)
- Maintenance-Free and Economical Toner Cartridge
- Universal Paper Cassette
- Three Interfaces
- Automatic Interface Selection
- Five Emulation Modes
- Automatic Emulation Selection
- Data Compression Technology
- Various Fonts
- CCITT G3/G4
- Panel Lock Function
- Power Save Mode
- Toner Save Mode
- Reprint Function
- PANTONE® Calibrated
- Network
- Options
- Compact Flash Card
- RAM
- Operating and Storage Environment
- CHAPTER 2 DRIVER AND SOFTWARE
- CHAPTER 3 BEFORE WORKING WITH THE PRINTER
- CHAPTER 4 CONTROL PANEL OPERATION
- CHAPTER 5 MAINTENANCE
- CHAPTER 6 OPTIONS
- CHAPTER 7 TROUBLE SHOOTING
- APPENDIX
- INDEX
![](/manual/brother/hl-3450cn/1-user-guide-english/images/img-179.png)
CHAPTER 7 TROUBLE SHOOTING
7-25
Question Recommendation
Black vertical streaks
or bands
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
1) Identify the missing color and replace that toner
cartridge.
2) Replace the OPC belt cartridge.
Black (colored)
horizontal lines
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Identify the missing color and replace that toner
cartridge.
White spots or hollow
print
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
1) Change the
paper to freshly unpacked paper, and then check
that the problem was solved.
2) Check that the specified paper was used.
3) Check that the room temperature is higher than
10°C (50°F)
Completely blank or
some colors are
missing
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
1) Identify the missing color and that the toner
cartridge is installed correctly.
2) Replace the toner cartridge.
3) Replace the OPC belt cartridge.
Black (colored) spots
or Toner stain
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
Contact your dealer or Brother Authorized Service
Representative.