Brother HL-4050CDN Service-Handbuch - Seite 7

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9. DISASSEMBLY PROCEDURE (LT-100CL) (HL-4050CDN/ 4070CDW ONLY)......3-134

9.1 LT Paper Tray ................................................................................................................ 3-134

9.2 LT Cover Rear................................................................................................................ 3-138

9.3 LT Cover Left.................................................................................................................. 3-139

9.4 LT Cover Right ............................................................................................................... 3-140

9.5 LT Relay PCB ASSY ...................................................................................................... 3-141

9.6 LT Solenoid ASSY.......................................................................................................... 3-142

9.7 Collar 6 ........................................................................................................................... 3-143

9.8 Cassette Switch ASSY................................................................................................... 3-143

9.9 LT Paper Feed Frame Unit ............................................................................................ 3-145

CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTING,

REQUIRED AFTER PARTS REPLACEMENT ................... 4-1

1. IF YOU REPLACE THE MAIN PCB ............................................................................4-1

2. IF YOU REPLACE THE ENGINE PCB......................................................................4-12

3. IF YOU REPLACE THE TRANSFER HVPS PCB UNIT OR REGISTRATION-

MARK SENSOR PCB ASSY 1, 2..............................................................................4-15

4. IF YOU REPLACE THE LASER UNIT.......................................................................4-16

CHAPTER 5 SERVICE FUNCTIONS ....................................................... 5-1

1. MAINTENANCE MODE...............................................................................................5-1

1.1 How to Enter the Maintenance Mode................................................................................. 5-1

1.2 How to Enter the End User-accessible Maintenance Mode .............................................. 5-1

1.3 List of Maintenance-mode Functions ................................................................................. 5-2

1.4 Detailed Description of Maintenance-mode Functions ...................................................... 5-3

1.4.1 EEPROM Parameter Initialization (Function code 01, 91) ...................................... 5-3

1.4.2 Test Pattern (Function code 09) .............................................................................. 5-4

1.4.3 Worker Switch (WSW) Setting and Printout ............................................................ 5-5

1.4.4 Operational Check of LCD (Function code 12)........................................................ 5-7

1.4.5 Operational Check of Control Panel PCB (Function code 13) ................................ 5-8

1.4.6 ROM Version Check (Function code 25) ................................................................. 5-9

1.4.7 "One Push Demo" Setting (Function code 28) ...................................................... 5-10

1.4.8 Drum Unit Cleaning (Function code 31) ................................................................ 5-10

1.4.9 Operational Check of Sensors (Function code 32)................................................ 5-11

1.4.10 Printout of EEPROM Log (Function code 40)...................................................... 5-14

1.4.11 USB Transfer Speed Change in the PictBridge Mode (Function code 45) ......... 5-15

1.4.12 Adjustment of Color Registration (Function code 66).......................................... 5-16

1.4.13 Paper Feeding and Ejecting Test (Function code 67) ......................................... 5-18

1.4.14 Sensitivity Adjustment of Density Sensor (Function code 72) ............................ 5-18

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