PREFACE- Page 4

 ii 

Confidential

CHAPTER 8  MAINTENANCE MODE 

Describes the maintenance mode which is exclusively designed for the purpose of checks, settings  
and adjustments using the keys on the control panel. 
In the maintenance mode, you can update memory (EEPROM: electrically erasable programmable  
read-only memory) contents for optimizing the drive conditions of the head/carriage unit, paper  
feed roller or paper ejection roller (if they have been replaced) or for setting the CIS scanner area,  
for example.  You can also customize the EEPROM according to the shipment destination of the  
machine concerned. In addition, you can perform operational checks of the LCD, control panel  
PCB or sensors, perform a print test, display the log information or error codes, and modify  
firmware switches (WSW). 

CHAPTER 9  ERROR INDICATION AND TROUBLESHOOTING 

Details error messages and codes that the incorporated self-diagnostic functions display if any  
error or malfunction occurs.  If any error message appears, refer to this chapter to find which  
components should be checked or replaced. 
The latter half of this chapter provides sample problems that could occur in the main sections of  
the machine and related troubleshooting procedures.  This will help service personnel pinpoint and  
repair defective components. 
 

APPENDIX 1  SERIAL NUMBERING SYSTEM 

Shows the location of serial number labels put on some parts and lists the coding information  
pertaining to the serial numbers. 

APPENDIX 2  FIRMWARE INSTALLATION

Provides instructions on how to update firmware stored in the flash ROM on the main PCB or load  
firmware to a new main PCB from the host PC. 
No hardware replacement is required for updating. 

APPENDIX 3  CUSTOMIZING CODES ACCORDING TO SHIPPING DESTINATION 

Lists the customizing codes for the various preferences exclusively designed for each destination  
(e.g. language).  Those codes are stored in the memory (EEPROM) mounted on the main PCB.  If  
the main PCB is replaced with a new one, therefore, you will need to set the proper customizing  
codes with the machine in the maintenance mode. 

APPENDIX 4  FIRMWARE SWITCHES (WSW) 

Describes the functions of the firmware switches, which can be divided into two groups: one is for  
customizing preferences designed for the shipping destination (as described in 

Appendix 3

) and  

the other is for modifying preferences that match the machine to the environmental conditions. 
Use the latter group if the machine malfunctions due to mismatching. 

APPENDIX 5  WIRING DIAGRAM 

Provides the wiring diagram that helps you understand the connections between PCBs. 

APPENDIX 6  CIRCUIT DIAGRAMS 

Provides the circuit diagrams of the NCU PCB and power supply PCB. 

This manual describes the models and their versions destined for major countries. 
The specifications and functions are subject to change depending upon each destination.