Question about Printers & Copiers
Hi my expert ginko.
my problem is the keyboard in canon np 7161 and i comfirmed this after replacing the key board of the other machine also canon np 7161.
indication from the said key board (the bad one) is control card and the right door open at the same time once you switch on the machine.
as you know the key board has only the resistors, diodes,led, jumpers (wires), the 8 segment display, switches and 3 plugin connectors.
I measured all the components by digital multimeter and i found northing bad. Can you tell me the excactly components that can course this problem? may the 8 segment display the problem?
pls help me through my Email: khakhamis@yahoo,com
If You trust me ... then do it i had the same problem after too much hard work i found the LEDs was causing the problems just trust me and replace all the LEDs on the panel card ....
and remember me in ur prayers thanks and regards
contact me for further
Posted on Mar 27, 2009
I did not understand in deep what is wrong with the printer, if the conntrol board is malfunctioning then, often the touch buttons on control board are probably faulty.
We generally do not even bother to test them, when one or two button do not work we check the connector, usually a ribbon cable, then we replace the control panel assembly.
If you want to test the buttons, the easiest thing to do is checking signal at the ribbon cable connection cold solder joints.
Posted on Sep 15, 2008
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See Chapter 10 page 101 of the service manual You can download the service manual for the Canon NP 7161 from here See chapter 10 page 101
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