Brother HL-1240 Manuale di servizio - Pagina 5

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4.2

Load Paper Manually ......................................................................................................2-10

4.3

Two Side Printing (Manual Duplexing)............................................................................2-11

4.3.1 To print on both sides of the paper from the paper cassette ............................................ 2-11

4.3.2 To print on both sides of the paper from the manual feed slot.......................................... 2-12

CONTROL PANEL OPERATION................................ ................................ ...........2-13

5.1

Ready (Paper) LED Indications ......................................................................................2-13

5.2

Data (Toner) LED Indications .........................................................................................2-14

5.3

Drum LED Indications .....................................................................................................2-14

5.4

Alarm LED Indications ....................................................................................................2-14

5.5

Control Panel Button Operations ....................................................................................2-15

5.6

Other Control Features ...................................................................................................2-15

5.6.1 Sleep mode....................................................................................................................... 2-15

5.6.2 Test print mode ................................................................................................................. 2-16

NETWORK BOARD OPERATION (FOR HL-1270N ONLY) ................................ ..2-17

6.1

Preparing the BR-net Board............................................................................................2-17

6.1.1 Connect the Ethernet cable .............................................................................................. 2-17

6.1.2 Install the BRAdmin32: configuration utility (for Windows 95/98/NT 4.0 users only) ........ 2-17

6.1.3 Print configuration page .................................................................................................... 2-18

6.2

Functions ........................................................................................................................2-18

6.2.1 LED functions.................................................................................................................... 2-18

6.2.2 Factory default setting....................................................................................................... 2-18

CHAPTER 3 THEORY OF OPERATION .................................................3-1

ELECTRONICS ................................ ................................ ................................ .......3-1

1.1

General Block Diagram.....................................................................................................3-1

1.2

Main PCB Block Diagram .................................................................................................3-4

1.3

Main PCB..........................................................................................................................3-7

1.3.1 ASIC.................................................................................................................................... 3-7

1.3.2 ROM.................................................................................................................................. 3-10

1.3.3 Flash ROM ........................................................................................................................ 3-12

1.3.4 DRAM................................................................................................................................ 3-12

1.3.5 Optional RAM.................................................................................................................... 3-14

1.3.6 Optional serial I/O ............................................................................................................. 3-15

1.3.7 PCI bus ............................................................................................................................. 3-15

1.3.8 EEPROM........................................................................................................................... 3-16

1.3.9 Reset circuit ...................................................................................................................... 3-16

1.3.10 Engine I/O ......................................................................................................................... 3-17

1.4

Engine PCB ....................................................................................................................3-18

1.5

BR-net PCB (for HL-1270 only) ......................................................................................3-18

1.6

Power Supply..................................................................................................................3-19

1.6.1 Low-voltage Power Supply ............................................................................................... 3-19

1.6.2 High-voltage Power Supply............................................................................................... 3-20

MECHANICS ................................ ................................ ................................ .........3-21

2.1

Overview of Printing Mechanism ....................................................................................3-21

2.2

Paper Transfer ................................................................................................................3-23

2.2.1 Paper supply ..................................................................................................................... 3-23

2.2.2 Paper registration.............................................................................................................. 3-23

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