Brother 1240 Manuals

Manuals and User Guides for Brother 1240. We have 1 Brother 1240 manual available for free PDF download: Service Manual

Brother 1240 Service Manual (243 pages)

Brother Laser Printer SERVICE MANUAL HL-1030, 1240, 1250, 1270N

Brand: Brother | Category: Printer | Size: 5.21 MB

Service Manual1................................................................................................................................................................

Table Of Contents4................................................................................................................................................................

Regulation9................................................................................................................................................................

Safety Information11................................................................................................................................................................

Chapter 1 General13................................................................................................................................................................

Features13................................................................................................................................................................

Overview16................................................................................................................................................................

Specifications17................................................................................................................................................................

Printing17................................................................................................................................................................

Functions18................................................................................................................................................................

Electrical And Mechanical19................................................................................................................................................................

Network (for Hl-1270n Only)20................................................................................................................................................................

Paper20................................................................................................................................................................

Feedable Paper20................................................................................................................................................................

Paper Cassette Capacity22................................................................................................................................................................

Print Delivery22................................................................................................................................................................

Printing Area23................................................................................................................................................................

Effective Printing Area23................................................................................................................................................................

Print Guaranteed Area23................................................................................................................................................................

Chapter 2 Installation And Basic Operation25................................................................................................................................................................

Conditions Required For Installation25................................................................................................................................................................

Power Supply25................................................................................................................................................................

Environment25................................................................................................................................................................

System Requirements For Brother Printer Solution For Windows25................................................................................................................................................................

Unpacking26................................................................................................................................................................

Install The Printer27................................................................................................................................................................

For Windows Users27................................................................................................................................................................

For Windows Users With No Cd-rom Drive29................................................................................................................................................................

Install The Drum Unit29................................................................................................................................................................

Load Paper29................................................................................................................................................................

Print A Test Page29................................................................................................................................................................

Connect The Printer And The Computer30................................................................................................................................................................

Install The Printer Driver From Floppy Disk30................................................................................................................................................................

Using The Usb Interface31................................................................................................................................................................

Using The Usb Interface (for Windows 98 Only)31................................................................................................................................................................

Connect The Usb Interface Cable31................................................................................................................................................................

Install The Usb Driver31................................................................................................................................................................

Set The Pc Printer Port33................................................................................................................................................................

For Macintosh (imac And Power Macintosh) With Usb Users Only33................................................................................................................................................................

Paper Handling34................................................................................................................................................................

Load Paper Into The Paper Cassette34................................................................................................................................................................

Load Paper Manually34................................................................................................................................................................

Two Side Printing (manual Duplexing)35................................................................................................................................................................

To Print On Both Sides Of The Paper From The Paper Cassette35................................................................................................................................................................

To Print On Both Sides Of The Paper From The Manual Feed Slot36................................................................................................................................................................

Control Panel Operation37................................................................................................................................................................

Ready (paper) Led Indications37................................................................................................................................................................

Data (toner) Led Indications38................................................................................................................................................................

Drum Led Indications38................................................................................................................................................................

Alarm Led Indications38................................................................................................................................................................

Control Panel Button Operations39................................................................................................................................................................

Other Control Features39................................................................................................................................................................

Sleep Mode39................................................................................................................................................................

Test Print Mode40................................................................................................................................................................

Network Board Operation (for Hl-1270n Only)41................................................................................................................................................................

Preparing The Br-net Board41................................................................................................................................................................

Connect The Ethernet Cable41................................................................................................................................................................

Install The Bradmin32: Configuration Utility (for Windows 95/98/nt 4.0 Users Only)41................................................................................................................................................................

Print Configuration Page42................................................................................................................................................................

Led Functions42................................................................................................................................................................

Factory Default Setting42................................................................................................................................................................

Chapter 3 Theory Of Operation43................................................................................................................................................................

Electronics43................................................................................................................................................................

General Block Diagram43................................................................................................................................................................

Main Pcb Block Diagram46................................................................................................................................................................

Main Pcb49................................................................................................................................................................

Asic49................................................................................................................................................................

Rom52................................................................................................................................................................

Flash Rom54................................................................................................................................................................

Dram54................................................................................................................................................................

Optional Ram56................................................................................................................................................................

Optional Serial I/o57................................................................................................................................................................

Pci Bus57................................................................................................................................................................

Eeprom58................................................................................................................................................................

Reset Circuit58................................................................................................................................................................

Engine I/o59................................................................................................................................................................

Engine Pcb60................................................................................................................................................................

Br-net Pcb (for Hl-1270 Only)60................................................................................................................................................................

Low-voltage Power Supply61................................................................................................................................................................

High-voltage Power Supply62................................................................................................................................................................

Mechanics63................................................................................................................................................................

Overview Of Printing Mechanism63................................................................................................................................................................

Paper Transfer65................................................................................................................................................................

Paper Supply65................................................................................................................................................................

Paper Registration65................................................................................................................................................................

Paper Eject66................................................................................................................................................................

Sensors66................................................................................................................................................................

Cover Sensors A And B66................................................................................................................................................................

Toner Sensor67................................................................................................................................................................

Drum Unit67................................................................................................................................................................

Photosensitive Drum67................................................................................................................................................................

Primary Charger67................................................................................................................................................................

Transfer Roller67................................................................................................................................................................

Cleaner67................................................................................................................................................................

Toner Cartridge67................................................................................................................................................................

Print Process68................................................................................................................................................................

Charging68................................................................................................................................................................

Exposure Stage68................................................................................................................................................................

Developing69................................................................................................................................................................

Transfer70................................................................................................................................................................

Fixing Stage70................................................................................................................................................................

Chapter 4 Disassembly And Re-assembly71................................................................................................................................................................

Safety Precautions71................................................................................................................................................................

Disassembly Flow72................................................................................................................................................................

Disassembly Procedure73................................................................................................................................................................

Ac Cord73................................................................................................................................................................

Paper Cassette74................................................................................................................................................................

Network Board (for Hl-1270n Only)80................................................................................................................................................................

Front Cover81................................................................................................................................................................

Top Cover82................................................................................................................................................................

Main Cover83................................................................................................................................................................

Laser Unit85................................................................................................................................................................

Drive Unit86................................................................................................................................................................

Fixing Unit88................................................................................................................................................................

Base Plate99................................................................................................................................................................

Main Pcb Assy101................................................................................................................................................................

Lower Tray Relay Pcb Assy (for Hl-1250/1270n Only)101................................................................................................................................................................

Low-voltage Power Supply Pcb Assy102................................................................................................................................................................

Engine Pcb Assy / High-voltage Power Supply Pcb Assy104................................................................................................................................................................

Panel Pcb Assy106................................................................................................................................................................

Solenoid Assy106................................................................................................................................................................

Fan Motor Assy109................................................................................................................................................................

Toner Sensor Pcb Assy (light Emission)110................................................................................................................................................................

Toner Sensor Pcb Assy (light Reception)110................................................................................................................................................................

Paper Pick-up Roller Assy111................................................................................................................................................................

Paper Feed Roller Assy112................................................................................................................................................................

Outer Chute 1113................................................................................................................................................................

Packing114................................................................................................................................................................

Chapter 5 Periodic Maintenance115................................................................................................................................................................

Consumable Parts115................................................................................................................................................................

Periodical Replacement Parts118................................................................................................................................................................

Periodical Cleaning119................................................................................................................................................................

Cleaning The Printer Exterior119................................................................................................................................................................

Cleaning The Drum Unit119................................................................................................................................................................

Cleaning The Scanner Window120................................................................................................................................................................

Cleaning The Electrical Terminals120................................................................................................................................................................

Mtbf / Mttr121................................................................................................................................................................

Chapter 6 Troubleshooting123................................................................................................................................................................

Introduction123................................................................................................................................................................

Initial Check123................................................................................................................................................................

Warnings For Maintenance Work124................................................................................................................................................................

Identify The Problem125................................................................................................................................................................

Operator Calls & Service Calls126................................................................................................................................................................

Operator Calls126................................................................................................................................................................

Service Calls126................................................................................................................................................................

Error Messages128................................................................................................................................................................

Error Messages In The Status Monitor128................................................................................................................................................................

Error Message Printouts130................................................................................................................................................................

Paper Problems131................................................................................................................................................................

Paper Load Problems131................................................................................................................................................................

Paper Jams132................................................................................................................................................................

Clearing The Jammed Paper132................................................................................................................................................................

Causes & Countermeasures133................................................................................................................................................................

Paper Feeding Problems134................................................................................................................................................................

Software Setting Problems136................................................................................................................................................................

Malfunctions140................................................................................................................................................................

Image Defects145................................................................................................................................................................

Image Defect Examples145................................................................................................................................................................

Troubleshooting Image Defect146................................................................................................................................................................

Location Of Grounding Contacts163................................................................................................................................................................

Printer Body & Paper Cassette163................................................................................................................................................................

Incorrect Printout164................................................................................................................................................................

Network Problem (for Hl-1270n Only)167................................................................................................................................................................

Installation Problem167................................................................................................................................................................

Intermittent Problem168................................................................................................................................................................

Tcp/ip Troubleshooting169................................................................................................................................................................

Unix Troubleshooting169................................................................................................................................................................

Windows Nt/lan Server (tcp/ip) Troubleshooting170................................................................................................................................................................

Windows 95/98 Peer To Peer Print (lpr) Troubleshooting170................................................................................................................................................................

Windows 95/98 (or Later) Peer To Peer (hp Jetadmin Compatible Method) Troubleshooting171................................................................................................................................................................

Windows 95/98/nt 4.0 Peer To Peer Print (netbios) Troubleshooting171................................................................................................................................................................

Internet Print (tcp/ip) Troubleshooting171................................................................................................................................................................

Novell Netware Troubleshooting172................................................................................................................................................................

Appletalk Troubleshooting172................................................................................................................................................................

Apple Tcp/ip Printing (system 8.6 Or Later)173................................................................................................................................................................

Web Browser Troubleshooting (tcp/ip)173................................................................................................................................................................

Inspection Mode174................................................................................................................................................................

Serial No. Descriptions179................................................................................................................................................................

Diameter / Circumference Of Rollers181................................................................................................................................................................

Print Speeds With Various Settings182................................................................................................................................................................

How To Know Drum Unit Life & Page Counter183................................................................................................................................................................

How To Use The Self-diagnostics Tools189................................................................................................................................................................

Nvram Default Value193................................................................................................................................................................

Paper Cassette Information (for Europe Only194................................................................................................................................................................

Connection Diagram, Hl-1030/1240195................................................................................................................................................................

Connection Diagram, Hl-1250196................................................................................................................................................................

Connection Diagram, Hl-1270n197................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1030/1240 (1/2198................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1030/1240 (2/2199................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1250/1270n (1/5200................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1250/1270n (2/5201................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1250/1270n (3/5202................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1250/1270n (4/5203................................................................................................................................................................

Main Pcb Circuit Diagram, Hl-1250/1270n (5/5204................................................................................................................................................................

Engine Pcb Circuit Diagram (old205................................................................................................................................................................

Engine Pcb Circuit Diagram (new206................................................................................................................................................................

Network Board Circuit Diagram207................................................................................................................................................................

Low-voltage Power Supply Pcb Circuit Diagram (110 - 120v)208................................................................................................................................................................

Low-voltage Power Supply Pcb Circuit Diagram (220 - 240v)209................................................................................................................................................................

High-voltage Power Supply Pcb Circuit Diagram (old210................................................................................................................................................................

High-voltage Power Supply Pcb Circuit Diagram (new211................................................................................................................................................................

Differences Between Old & New Versions Of Hvps & Engine Pcb212................................................................................................................................................................

Parts Reference List219................................................................................................................................................................

Frame / Drive Unit222................................................................................................................................................................

Paper Feeder224................................................................................................................................................................

Covers231................................................................................................................................................................

Low-voltage Power Supply Pcb235................................................................................................................................................................

High-voltage Power Supply Pcb237................................................................................................................................................................

Ac Cords237................................................................................................................................................................

Accessories239................................................................................................................................................................

Packing Materials241................................................................................................................................................................

Network Board241................................................................................................................................................................

Adjusting Tool243................................................................................................................................................................