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Brother Manuals
Printer
1240
Service manual
Brother 1240 Service Manual
Brother laser printer service manual hl-1030, 1240, 1250, 1270n
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Service Manual
Regulation
Safety Information
Chapter 1 General
Features
Overview
Specifications
Printing
Functions
Electrical and Mechanical
Feedable Paper
Network (for HL-1270N Only)
Paper
Paper Cassette Capacity
Print Delivery
Effective Printing Area
Print Guaranteed Area
Printing Area
Chapter 2 Installation and Basic Operation
Conditions Required for Installation
Environment
Power Supply
System Requirements for Brother Printer Solution for Windows
Unpacking
Install the Printer
For Windows Users
For Windows Users with no CD-ROM Drive
Install the Drum Unit
Load Paper
Print a Test Page
Connect the Printer and the Computer
Install the Printer Driver from Floppy Disk
Connect the USB Interface Cable
Install the USB Driver
Using the USB Interface
Using the USB Interface (for Windows 98 Only)
For Macintosh (Imac and Power Macintosh) with USB Users Only
Set the PC Printer Port
Paper Handling
Load Paper into the Paper Cassette
Load Paper Manually
To Print on both Sides of the Paper from the Paper Cassette
Two Side Printing (Manual Duplexing)
To Print on both Sides of the Paper from the Manual Feed Slot
Control Panel Operation
Ready (Paper) LED Indications
Alarm LED Indications
Data (Toner) LED Indications
Drum LED Indications
Control Panel Button Operations
Other Control Features
Sleep Mode
Test Print Mode
Network Board Operation (for Hl-1270N Only)
Connect the Ethernet Cable
Install the Bradmin32: Configuration Utility (for Windows 95/98/NT 4.0 Users Only)
Preparing the BR-Net Board
Factory Default Setting
Functions
LED Functions
Print Configuration Page
Chapter 3 Theory of Operation
Electronics
General Block Diagram
Main PCB Block Diagram
Asic
Main PCB
Rom
Dram
Flash ROM
Optional RAM
Optional Serial I/O
PCI Bus
Eeprom
Reset Circuit
Engine I/O
BR-Net PCB (for HL-1270 Only)
Engine PCB
Low-Voltage Power Supply
Power Supply
High-Voltage Power Supply
Mechanics
Overview of Printing Mechanism
Paper Registration
Paper Supply
Paper Transfer
Cover Sensors a and B
Paper Eject
Sensors
Cleaner
Drum Unit
Photosensitive Drum
Primary Charger
Toner Cartridge
Toner Sensor
Transfer Roller
Charging
Exposure Stage
Print Process
Developing
Fixing Stage
Transfer
Chapter 4 Disassembly and Re-Assembly
Safety Precautions
Disassembly Flow
Disassembly Procedure
AC Cord
Drum Unit
Paper Cassette
Network Board (for HL-1270N Only)
Front Cover
Top Cover
Main Cover
Laser Unit
Drive Unit
Fixing Unit
Base Plate
Lower Tray Relay PCB ASSY (for HL-1250/1270N Only)
Main PCB ASSY
Low-Voltage Power Supply PCB ASSY
Engine PCB ASSY / High-Voltage Power Supply PCB ASSY
Panel PCB ASSY
Solenoid ASSY
Fan Motor ASSY
Toner Sensor PCB ASSY (Light Emission)
Toner Sensor PCB ASSY (Light Reception)
Paper Pick-Up Roller ASSY
Paper Feed Roller ASSY
Outer Chute 1
Packing
Chapter 5 Periodic Maintenance
Consumable Parts
Drum Unit
Toner Cartridge
Periodical Replacement Parts
Periodical Cleaning
Cleaning the Drum Unit
Cleaning the Printer Exterior
Cleaning the Electrical Terminals
Cleaning the Scanner Window
Mtbf / Mttr
Chapter 6 Troubleshooting
Introduction
Initial Check
Section 1 'Consumable Parts' in
Warnings for Maintenance Work
Identify the Problem
Operator Calls & Service Calls
Operator Calls
Service Calls
Error Messages
Error Messages in the Status Monitor
Error Message Printouts
Paper Problems
Paper Load Problems
Paper Loading Problems
Clearing the Jammed Paper
Paper Jams
Causes & Countermeasures
Double Feeding
Paper Feeding Problems
Wrinkles or Creases
Software Setting Problems
Malfunctions
Fuser Failure
Image Defects
Image Defect Examples
Troubleshooting Image Defect
Completely Blank
All Black
White Vertical Streaks
Faulty Registration
Poor Fixing
Faint Print
Image Distortion
White Spots
Black Band
Black Spots
Gray Background
Downward Fogging of Solid Black
Horizontal Lines
Toner Specks
Drum Unit
Location of Grounding Contacts
Printer Body & Paper Cassette
Incorrect Printout
Network Problem (for Hl-1270N Only)
Installation Problem
Intermittent Problem
TCP/IP Troubleshooting
UNIX Troubleshooting
Windows 95/98 Peer to Peer Print (LPR) Troubleshooting
Windows NT/LAN Server (TCP/IP) Troubleshooting
Internet Print (TCP/IP) Troubleshooting
Windows 95/98 (or Later) Peer to Peer (HP Jetadmin Compatible Method) Troubleshooting
Windows 95/98/NT 4.0 Peer to Peer Print (Netbios) Troubleshooting
Appletalk Troubleshooting
Novell Netware Troubleshooting
Apple TCP/IP Printing (System 8.6 or Later)
Web Browser Troubleshooting (TCP/IP)
Inspection Mode
Test Print Mode
Inspection Mode
Serial No. Descriptions
Diameter / Circumference of Rollers
Print Speeds with Various Settings
How to Know Drum Unit Life & Page Counter
Section 2 'How to Read the Drum Unit
How to Use the Self-Diagnostics Tools
Troubleshooting for Printer Won't Print
Printer Information
Nvram Default Value
Paper Cassette Information (for Europe Only
Connection Diagram, Hl-1030/1240
Connection Diagram, Hl-1250
Connection Diagram, Hl-1270N
Main Pcb Circuit Diagram, Hl-1030/1240 (1/2
Main Pcb Circuit Diagram, Hl-1030/1240 (2/2
Main Pcb Circuit Diagram, Hl-1250/1270N (1/5
Main Pcb Circuit Diagram, Hl-1250/1270N (2/5
Main Pcb Circuit Diagram, Hl-1250/1270N (3/5
Main Pcb Circuit Diagram, Hl-1250/1270N (4/5
Main Pcb Circuit Diagram, Hl-1250/1270N (5/5
Engine Pcb Circuit Diagram (Old
Engine Pcb Circuit Diagram (New
Network Board Circuit Diagram
Low-Voltage Power Supply Pcb Circuit Diagram (110 - 120V)
Low-Voltage Power Supply Pcb Circuit Diagram (220 - 240V)
High-Voltage Power Supply Pcb Circuit Diagram (Old
High-Voltage Power Supply Pcb Circuit Diagram (New
Differences between Old & New Versions of Hvps & Engine Pcb
Parts Reference List
Table of Contents
Frame / Drive Unit
Laser Unit
Paper Feeder
Fixing Unit
Paper Cassette
Covers
Main Pcb
Engine Pcb
Low-Voltage Power Supply Pcb
Ac Cords
High-Voltage Power Supply Pcb
Accessories
Network Board
Packing Materials
Adjusting Tool
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MODEL: HL-1030/1240/1250/1270N
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
September, 1999
SM-PRN001
Brother Laser Printer
SERVICE MANUAL
R
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Chapters
Table of Contents
4
Table of Contents
221
Table of Contents
Troubleshooting
CHAPTER 6 TROUBLESHOOTING
123
Troubleshooting Image Defect
146
TCP/IP Troubleshooting
169
Windows NT/LAN Server (TCP/IP) Troubleshooting
170
Windows 95/98 (or later) Peer to Peer (HP JetAdmin Compatible Method) Troubleshooting
171
Novell Netware Troubleshooting
172
Apple TCP/IP Printing (System 8.6 or later)
173
HOW TO USE THE SELF-DIAGNOSTICS TOOLS
189
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This manual is also suitable for:
1270n
Hl-1030
Hl-1240
Hl-1250
Hl-1270n
1250
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