Brother MFC-9840CDW Instrukcja serwisowa - Strona 8

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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 ..................................................................... 4-10

3. IF YOU REPLACE THE FB UNIT ............................................................................. 4-13

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 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 Printout of Scanning Compensation Data (Function code 05).................................5-4

1.4.3 Placement of Scanner Unit Position for Transportation (Function code 06)............5-6

1.4.4 ADF Performance Test (Function code 08) .............................................................5-6

1.4.5 Test Pattern (Function code 09)...............................................................................5-7

1.4.6 Worker Switch (WSW) Setting and Printout.............................................................5-8

1.4.7 Operational Check of LCD (Function code 12) ......................................................5-11

1.4.8 Operational Check of Control Panel Button (Function code 13) ............................5-12

1.4.9 ROM Version Check (Function code 25) ...............................................................5-13

1.4.10 Drum Unit Cleaning (Function code 31)...............................................................5-14

1.4.11 Operational Check of Sensors (Function code 32) ..............................................5-15

1.4.12 Switching of the USB Transfer Speed in the PictBridge Mode/

(Function code 45) ...............................................................................................5-19

1.4.13 EEPROM Customizing (User-accessible) (Function code 52) ............................5-20

1.4.14 Received Data Transfer Function (Function code 53) (MFC-9840CDW only) ....5-21

1.4.15 Fine Adjustment of Scan Start/End Positions (Function code 54) .......................5-23

1.4.16 Acquisition of White Level Data and CCD Scanner Area Setting

(Function code 55) ...............................................................................................5-25

1.4.17 Paper Feeding and Ejecting Test (Function code 67)..........................................5-26

1.4.18 Sensitivity Adjustment of Density Sensor (Function code 72)

1.4.19 EEPROM Customizing (Function code 74)..........................................................5-27

1.4.20 Sensitivity Adjustment of Registration-mark Sensor (Function code 75).............5-28

1.4.21 Operational Check of Fans (Function code 78) ...................................................5-30

1.4.22 Display of the Machine's Log Information (Function code 80) .............................5-32

1.4.23 Error Code Indication (Function code 82) ............................................................5-34

1.4.24 Developing Bias Voltage Correction (Function code 83) .....................................5-34

1.4.25 Output of Transmission Log to the Telephone Line (Function code 87)..............5-35

1.4.26 Exit from the Maintenance Mode (Function code 99) ..........................................5-35

(Don't

use)...........5-26

Confidential