Konica Minolta C450

[djsayan]

I just had a C450 but when I turn on the machine I have a message that appears "light unit modem "

[joneze]

Sound like there is an option set to "installed" in service mode. Boot copier into service mode and unset all option boards that are not needed.

[djsayan]

sorry but I did not understand what you mean. Can you given more details

[joneze]

Sorry, It sounds to me that there is an option installed on the machine such as a modem or fax kit. When you install such items on the machine you need to enable it in service mode, i think its under "state confirmation" -> "options". If in your case this option has been physically taken off the machine but not disabled in service mode then the machine may well give you the message your getting as the option is not starting when the machine is turned on.

Hope this makes more sense

[djsayan]

agree even if I do not find what you tell me. I have another problem but my screen does not turn on C450?

[mrwho]

agree even if I do not find what you tell me. I have another problem but my screen does not turn on C450?

If the screen's not working, where are you reading that message?

[djsayan]

If the screen's not working, where are you reading that message?

I see the menu and the option of the machine but there is no light or illumination

[djsayan]

is there an option to adjust the lighting in the machine C450

[joneze]

There is a brighness wheel on the control panel, which if turned can make the screen un-readable.

[djsayan]

not. I want a option of lighting and no contrast because my touch screen as if it is eco-energy mode

[johskar]

You mean there is picture on the display but no lightning? if so the Backlight for the display or the backlight inverter might be faulty.

[djsayan]

so there is no solution to this problem. and for the message to turn the modem unit I have to do what.?

[johskar]

solution for the display is to first find out wether it's the inverter or the actual backlight that's broken, if it's the backlight the display has to be replaced, if it's the inverter it can ither be repaired or replaced.

as for enabling the modem unit (fax modem?): enter tech-rep mode -> system2 -> option board status -> set Fax(main) to enabled.

[mrwho]

AFAIK there's no such thing. Your panel's backlight might be broken. Check and/or replace the LCD or the inverter board.

[ddude]

not. I want a option of lighting and no contrast because my touch screen as if it is eco-energy mode

When you can see the screen, enter the utility mode-user settings- and adjust settings for timers.