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pls clear cmos jumper first. after power on and go to bios by press the key board key. if worked, pls check the O/S setup or recovery setup . pls select select system restore and press restore previous date.
if not working usb key board and install PCI or PCI X usb adapter and plug to key board and mouse to it and go to bios and disable on board usb controller.
The PF-85 action works by having the hammers strike the contact strip, which in turn connects the trace patterns on the circuit boards you're looking at together.
Any dirt between the contact strip and the circuit board will cause the keys to not function correctly. You can remove dirt with rubbing alcohol (iso-propanol) and a cotton swab. The only thing on these boards is traces, contacts, and diodes so they are safe to handle...just don't get finger prints on the contacts.
You should also make sure that the white wires are plugged in all the way on the back of these boards. A loose connection will cause the problem you've described. As would missing screws!
What those keys on the membrane pad have in common is pin 18 of the keypad matrix.See page 20 of the Service ManualMembrane Pad Continuity Checks.Do you know how to make continuity readings with an ohm meter?Follow the SM to power down the machine and remove the console to get to the console ribbon cable plugged into the Control Board. Very carefully remove the ribbon cable by squeezing the ribbon cable retainer plug ends to release the retaining plug which will then slide up the ribbon cable as in the pic's. Don't pull on the ribbon cable until you slide the retaining clip up the cable.I would check for any corrosion path issues between the pins on the ribbon cable and the mating socket on the Control Board.Follow the service manual for the continuity checks for the keys mentioned.The ribbon cable has black conductive pads on one side of the cable and you may need helper to make these measurements.With no keypad press you will read an open.Between a few of the keys I pressed for measurements I measured 30 ohms to 90 OHMS. Do not make any measurements on the control board with the OHM meter.Here is a pic of the retraining clip that latches to the socket on the control board. If the key press readings are similar to my readings for the effected keys I would try reseating the ribbon cable back in the socket on the control board then latch the retaining clip into the socket on the control board, power up the washer and give it a try.If the community checks on the keys in question read similar to mine not open under key press and the ribbon cable socket looks clean with no corrosion then I would suspect a Control Board issue. If you feel uncomfortable with this I would call in a authorized repair service.Good Luck.
use a ps2 to usb convertor, ps2 ports are not plug and play, you can damage the board by unplugging and plugging in PS2 devices with the power on, that may be what happened to yours, if thats the only thing, use an adapter
Could you explain some more of what you are looking to do. Is it get a key board and mouse working on a laptop, If so when you plug the key board or mouse into the system while the system is on it should recognize the device and install what is needed, If not plug in your items and go into control panel and add hardware button and follow directions. I hope that Help You out If not try a little more info and I will be back to check it out later. Sorry Your having problems and let me know Ok Thanks
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