I don't know of any way to operate them manually. You might try connecting 12 volts directly to the motor.
The steps can be released moved in and out by removing a cotter key from the pin holding the activating arm that connects the the steps and then removing the pin. That willow you to move the steps to see if they are binding. If they are, lubing them might solve the problem. The control board has a current sensor that stops the motor if they are too hard to move.
This is some info I have collected over the years from various threads for Kwikee steps. Maybe there is some info that will help.
Trouble shooting chart
HERE
There is a trouble shooting guide
HERE
If you need sources for motors or parts check the following:
Motor
PARTS 1
PARTS 2
PARTS 3
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" 1) AM Equipment 402 E. Hazel St Jefferson, OR 97352, (541) 327-1546 the motor is $29 plus $7 shipping.
2) Replacement step motor at AutoZone. It's a Siemens "Window Lift Motor", part number WL43003.
3) Autozone. The brand is "Siemens"
The ID tag lists the following numbers:
59720-20
121899
4) A 1986-1995 Ford Taurus left front window lift motor matched my motor. NAPA part # BK655-1395 $63.99 I ordered my motor from Auto-Zone Manufactured by Dorman part# 742-206. This has a lifetime Warranty and was $49.99. "
Also these guys rebuild the older unencapsulated circuit boards:
HERE
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New info in 2012
http://www.autozone.com/autozone/parts/Aci-Auto-Window-Lift-Motor/1995-Ford-F150-1-2-ton-P-U-2WD/_/N-j1z7uZ8ijybZ1z10l3u?itemIdentifier=972601_315519_1264_1356%2C78656
Aci Auto/Window Lift Motor
For your 1995 Ford Truck F150 1/2 ton P/U 2WD 5.0L EFI 8cyl
Enlarge Image
Part Number: 83094
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On disasembly of the motor I found the plastic plugs severly lopsided due to all the years of strain, new plugs cost $8.00 at Autozone or Amazon, other than that the Autozone Ford Mark VI would have worked $ $44, but I saved myself $38
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Just replaced my 25 series Kwikee step motor with a Dorman 742-277 window lift motor for a 1986 Ford Taurus driver side window lift motor. They said the Taurus had a high torque motor which is why the number ends with 277 meaning high torque. My steps zip in and out with this motor application. It was a special order item but only took one day for them to get it to my local AutoZone store. I also noticed AutoZone had rebuild kits for Dorman window lift gear boxes (plastic gears) in the Help section of the store.