Confidential
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CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, 
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB...........................................................4-1
1.1 Configure for Country/Region and Model (Function code 74) .................................... 4-2
1.2 Installing the Firmware (Sub Firmware and Main Firmware) ...................................... 4-2
1.2.1 Checking firmware version ................................................................................ 4-2
1.2.2 Installing firmware.............................................................................................. 4-3
1.3 Initializing the EEPROM of the Main PCB (Function code 01) ...................................4-3
1.4 Adjusting Touch Panel (Function code 61) (Touch panel models only) ...................... 4-3
1.5 Continuous Adjustments of Density and Registration Sensor (Function code 73) ..... 4-4
1.6 Setting the Serial Number (Function code 80) ........................................................... 4-4
2. IF YOU REPLACE THE 
REGISTRATION MARK SENSOR ASSY OR LED ASSY.........................4-7
2.1 Continuous Adjustments of Density and Registration Sensor (Function code 73) ..... 4-7
3. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ............4-8
3.1 Resetting Irregular Power Supply Counter of the Low-voltage Power Supply PCB 
(Reset counters for consumable parts (Function code 88))........................................4-8
4. IF YOU REPLACE THE TOP COVER ASSY, 
LCD, LCD PANEL ASSY OR PANEL PCB................................................4-9
4.1 Adjusting Touch Panel (Function code 61) (Touch panel models only) ...................... 4-9
4.2 Checking LCD Operation (Function code 12)............................................................. 4-9
5. IF YOU REPLACE THE FUSER UNIT.....................................................4-10
5.1 Resetting Printed Pages Counter of the Fuser Unit 
(Reset counters for consumable parts (Function code 88))......................................4-10
6. IF YOU REPLACE A PF KIT....................................................................4-11
6.1 Resetting Printed Pages Counter of a PF Kit
(Reset counters for consumable parts (Function code 88))...................................... 4-11
CHAPTER 5 SERVICE FUNCTIONS
1. MAINTENANCE MODE..............................................................................5-1
1.1 How to Enter Maintenance Mode ............................................................................... 5-1
1.1.1 Method of entering maintenance mode for service personnel........................... 5-1
1.1.2 Method of entering end-user accessible maintenance mode ............................ 5-2
1.2 List of Maintenance Mode Functions.......................................................................... 5-3
1.3 Details of Maintenance Mode Functions..................................................................... 5-4
1.3.1 Initialize EEPROM parameters (Function code 01, 91)..................................... 5-4