Chapter 3 Theory Of Operation - Brother HL-6050 Service Manual

4.3.1 Backlights.......................................................................................................................... 2-15
4.3.2 Printer status messages.................................................................................................... 2-15
4.4 How to Use the Control Panel........................................................................................ 2-16
4.5 Control Panel Setting Menu ........................................................................................... 2-17
4.5.1 Information ........................................................................................................................ 2-18
4.5.2 Paper ................................................................................................................................ 2-19
4.5.3 Quality............................................................................................................................... 2-19
4.5.4 Setup................................................................................................................................. 2-20
4.5.5 Print menu......................................................................................................................... 2-21
4.5.6 Network (HL-6050DN only) ............................................................................................... 2-25
4.5.7 Interface ............................................................................................................................ 2-26
4.5.8 Reset menu....................................................................................................................... 2-26
4.5.9 Set IP address .................................................................................................................. 2-27
4.5.10 About emulation modes .................................................................................................... 2-28
4.5.11 List of factory settings ....................................................................................................... 2-28
4.6 Other Control Features .................................................................................................. 2-32
4.6.1 Sleep mode....................................................................................................................... 2-32
4.6.2 Inspection mode................................................................................................................ 2-32
5. NETWORK BOARD OPERATION ..........................................................................2-33
5.1 Installing the Network Board .......................................................................................... 2-33
5.2 Functions........................................................................................................................ 2-35
5.2.1 LED functions.................................................................................................................... 2-35
5.2.2 Factory default setting....................................................................................................... 2-35
6. PAPER TRAY INFORMATION (FOR EUROPE ONLY) ..........................................2-36

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

1. ELECTRONICS .........................................................................................................3-1
1.1 General Block Diagram.................................................................................................... 3-1
1.2 Main PCB Block Diagram ................................................................................................ 3-2
1.3 Main PCB ......................................................................................................................... 3-3
1.3.1 CPU .................................................................................................................................... 3-3
1.3.2 USB..................................................................................................................................... 3-4
1.3.3 IEEE1284............................................................................................................................ 3-4
1.3.4 Network Interface ................................................................................................................ 3-5
1.3.5 ROM.................................................................................................................................... 3-6
1.3.6 Flash ROM.......................................................................................................................... 3-7
1.3.7 SDRAM ............................................................................................................................... 3-8
1.3.8 Optional RAM...................................................................................................................... 3-9
1.3.9 Compact Flash .................................................................................................................. 3-10
1.3.10 EEPROM .......................................................................................................................... 3-10
1.3.11 Reset Circuit ..................................................................................................................... 3-11
1.3.12 Engine I/O ......................................................................................................................... 3-11
1.3.13 Panel I/O ........................................................................................................................... 3-11
1.3.14 Video I/O ........................................................................................................................... 3-12
1.3.15 Sensor I/O......................................................................................................................... 3-13
1.3.16 Power Supply .................................................................................................................... 3-13
1.4 Engine PCB.................................................................................................................... 3-14
1.5 Power Supply ................................................................................................................. 3-15
1.5.1 Low-voltage Power Supply................................................................................................ 3-15
HL-6050/6050D/6050DN SERVICE MANUAL
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