v
Confidential
1.5 Inputting the Adjusted Value of the Laser Unit  ...................................................................  4-4
1.6 Acquisition of White Level Data (Maintenance Mode: Code 55)  ........................................  4-5
1.7 Operation Check of Sensors (Maintenance Mode: Code 32) .............................................  4-5
2. IF YOU REPLACE THE LASER UNIT .....................................................................................  4-6
2.1 Inputting the Adjusted Value of the Laser Unit  ...................................................................  4-6
3. IF THE IRREGULAR SUPPLY DETECTION ERROR IS DETECTED 
AND THE LOW VOLTAGE POWER SUPPLY PCB ASSY IS REPLACED  ...........................  4-7
3.1 Reset of Irregular Power Supply Detection Counter ...........................................................  4-7
3.1.1 Reset of irregular power supply detection counter using the PJL file .....................  4-7
3.1.2 Reset of irregular power supply detection counter using the maintenance tool  .....  4-7
4. IF YOU REPLACE THE DOCUMENT SCANNER UNIT  .........................................................  4-9
4.1 Acquisition of White Level Data (Maintenance Mode: Code 55)  ........................................  4-9
4.2 Scanning and Printing Check  .............................................................................................  4-9
4.3 Placement of Scanner Unit in Position for Transportation (Maintenance Mode: Code 06)   4-9
5. IF YOU REPLACE THE PANEL UNIT .....................................................................................  4-9
5.1 Operation Check of LCD (Maintenance Mode: Code 12)  ...................................................  4-9
5.2 Operation Check of Control Panel Button (Maintenance Mode: Code 13) .........................  4-9
6. IF YOU REPLACE THE LCD UNIT ........................................................................................  4-10
6.1 Operation Check of LCD (Maintenance Mode: Code 12)  .................................................  4-10
CHAPTER 5 SERVICE FUNCTIONS
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 Printout of scanning compensation data (Function code 05)  .................................  5-4
1.4.3 Placement of scanner unit in position for transportation (Function code 06)  .........  5-6
1.4.4 ADF performance test (Function code 08)  .............................................................  5-6
1.4.5 Monochrome image quality test pattern (Function code 09) ..................................  5-7
1.4.6 Worker switch (WSW) setting and printout (Function code 10, 11) ........................  5-8
1.4.7 Operational check of LCD (Function code 12)  .....................................................  5-12
1.4.8 Operational check of control panel button (Function code 13)  .............................  5-13
1.4.9 Adjustment of Handset Volume (Function code 16)
(Only for handset models)  ....................................................................................  5-14
1.4.10 Software version check (Function code 25) .........................................................  5-15
1.4.11 Operational check of sensors (Function code 32)  ................................................  5-16
1.4.12 LAN connection status display (Function code 33)  ..............................................  5-18
1.4.13 PC print function (Function code 43) ....................................................................  5-19
1.4.14 Not-disclosed-to-users functions (Function code 45)  ...........................................  5-22
1.4.15 EEPROM customizing (User-accessible) (Function code 52) ..............................  5-23
1.4.16 Received data transfer function (Function code 53) (FAX model only)  ................  5-24