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djsayan
03-30-2011, 10:27 PM
I just had a C450 but when I turn on the machine I have a message that appears "light unit modem "

joneze
03-30-2011, 10:31 PM
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
03-30-2011, 10:50 PM
sorry but I did not understand what you mean. Can you given more details

joneze
03-30-2011, 10:57 PM
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
03-30-2011, 11:52 PM
agree even if I do not find what you tell me. I have another problem but my screen does not turn on C450?

mrwho
03-31-2011, 12:00 AM
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
03-31-2011, 12:08 AM
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
03-31-2011, 11:50 AM
is there an option to adjust the lighting in the machine C450

joneze
03-31-2011, 11:58 AM
There is a brighness wheel on the control panel, which if turned can make the screen un-readable.

djsayan
03-31-2011, 12:14 PM
not. I want a option of lighting and no contrast because my touch screen as if it is eco-energy mode

johskar
03-31-2011, 02:18 PM
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
03-31-2011, 02:31 PM
so there is no solution to this problem. and for the message to turn the modem unit I have to do what.?

johskar
03-31-2011, 02:41 PM
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
03-31-2011, 11:08 PM
AFAIK there's no such thing. Your panel's backlight might be broken. Check and/or replace the LCD or the inverter board.

ddude
04-01-2011, 05:15 AM
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.

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