Brother MFC-J4420DW Service-Handbuch - Seite 9

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3.2

Acquire white level data (Maintenance mode 55) (Not required after

replacement of the ADF unit)............................................................................... 4-16

3.3

Check scanning ................................................................................................... 4-16

IF YOU REPLACE THE CONTROL PANEL ASSY..................................................... 4-17

4.1

Adjust the touch panel (Maintenance mode 78) .................................................. 4-17

4.2

Check LCD operation (Maintenance mode 12) ................................................... 4-17

4.3

Check the operation of the control panel keys (Maintenance mode 13) ............. 4-17

IF YOU REPLACE THE INK ABSORBER BOX OR FLUSHING BOX ....................... 4-17

5.1

Reset purge and flushing counts ......................................................................... 4-17

IF YOU REPLACE THE PAPER FEEDING RELATED PARTS and MAINTENANCE

UNIT .................................................................................................................................. 4-18

6.1

Check head nozzles (Maintenance mode 09) ..................................................... 4-19

6.2

Adjustment of software correction for inclination/corrugation/ruled lines

(Maintenance mode 65)....................................................................................... 4-19

6.3

Update paper feeding correction values (Maintenance mode 58)....................... 4-19

6.4

Adjust margins in borderless printing (Maintenance mode 66) ........................... 4-19

6.5

Check printing...................................................................................................... 4-19

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

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

1.1

Entry to the Maintenance Mode............................................................................. 5-1

1.1.1

How to Enter the Maintenance Mode for Service Personnel ........................ 5-1

1.1.2

How to Enter the End User-accessible Maintenance Mode.......................... 5-3

1.2

List of Maintenance-mode Functions..................................................................... 5-4

1.3

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

1.3.1

EEPROM Parameter Initialization (Maintenance mode 01, 91) .................... 5-5

1.3.2

Creating of Head Calibration Data and Writing it into Flash ROM

(Maintenance mode 02) ................................................................................ 5-6

1.3.3

Printout of Scanning Compensation White/Black Level Data

(Maintenance mode 05) .............................................................................. 5-11

1.3.4

ADF Performance Test (Maintenance mode 08) ........................................ 5-14

1.3.5

Printout of Test Pattern (Maintenance mode 09) ........................................ 5-14

1.3.6

Worker Switch Setting and Printout (Maintenance modes 10 and 11)........ 5-16

1.3.7

Operational Check of LCD (Maintenance mode 12) ................................... 5-19

1.3.8

Operational Check of Keys on Control Panel (Maintenance mode 13)....... 5-21

1.3.9

EEPROM Dump and Log Information Saving (Maintenance mode 17) ...... 5-22

1.3.10 Updating of Firmware Using an External Memory (Maintenance mode 28) ..... 5-23

1.3.11 Sensor Operational Check (Maintenance mode 32) ................................... 5-24

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