Kirk

asked Apr 3, 2003 at 4:52am
Nec NEC SuperScript 860

NEC SS 860

I have 4 of these in my building all with the same paper out error and found your posted articles mentioning the paper sensor.
I found the paper sensor, but can not see any way to jumper it. It has 3 wires (black, blue and red) that go into the black switch. Can I cut and splice these together? If so which ones?
Thanks,
Kirk

i do not understand how to "use jumpers" or how to dissasemble...could someone clarify or point me to some technical manual or ???

thank you in advance.
by johnchi on May 6, 2005 at 12:34am Add comment
I tried all 3 together, and then just tried pairing them up with one wire left out (all combinations). I got either an imeadiate error light or the paper out light when attempting a test page. Almost ready to make them boat anchors... grrrr
by Kirk on Apr 3, 2003 at 5:17am Add comment
I just had the "paper sensor" go out in my old NEC 860 superscript printer.

The paper supply hopper comes off easily by pressing two buttons where your hands naturally grab the supply hopper. With the hopper removed you can see the only white lever amidst the black on the left side, that is the "user flipped open the paper hopper" switch (not a true "paper supply" switch). (Playing with the paper hopper by itself you can see a hopper lever that moves in and out as you open and close the paper cover).

The printer's cover comes off with two screws in the back and two hidden screws in the front (carefully torque a front corner to remove the front "paper tray" to see them).

I saw the archived posting
http://www.fixyourownprinter.com/printer/1/218.html
advising "foolishly disassembled the printer far enough to get the switch off" and another NEC technicians suggestion of "jumpering" the paper sensor.

In the back circuit board it has the printing "CN7" and two wires (black and white). I pulled the connector out of CN7 and made sure the wires connected to the (back) printer "hopper/paper" switch. (It is not "CN9" with Black, Red, and Blue wires... those wires go to the printer front).

I simply inserted a plain old motherboard/hard drive jumper into CN7 (in place of the original connector, and left the Black and White wires/connector hang loose). I put all the covers back on and the printer works fine... the only thing is WHEN the paper runs out! The printer never gets to "see" that you opened the hopper cover to "know" that you put paper in! So you have to make sure that you keep your hopper full, or expect to power off the printer to reset and start over. An alternative would be to wire a simple toggle switch into the CN7 connector so your could "manually" tell the printer that you have opened the hopper cover (and the printer would then retry).

For now, I'm simply leaving the jumper in and keeping the hopper full!

Good luck.


by unknown on Jul 31, 2003 at 9:36am Add comment
Curt, you are GREAT!!
I had the paper sensor go out last year on my 860, and the only NEC Auth Repair Fac in the area told me they couldn't replace the sensor cost effectively, but would sell me a refurbished model for $100. (!) Since I wanted a laser, and liked the features on this one, I bought it.
The sensor just went out on this one, and your VERY clear directions just saved me much money. I fixed it in less than 15 minutes--the hardest part was getting the screws back in!! THANK YOU!!!
by unknown on Sep 16, 2003 at 10:53am Add comment
My sister just had the same thing happen to her printer. After talking to NEC, she picked up another paper feeder on ebay, which worked for a while, then the same thing happened again. Then she ordered a new feeder from NEC, which did not help at all. We figured, and NEC confirmed, that the real problem was probably the switch to which Curt referred in his 7/31/03 post.

NEC referred us to a company called Good Impressions, Inc. (www.goodimp.com) that has replacement switches for this machine. The switch, which is electronic and not mechanical, can be purchased for about $25. We installed the thing this morning and it fixed the problem.

The switch itself clips in under the black cowling mentioned and parallel to the printer's sides so that only the white lever style switch appears in the cut-out window where the paper feeder door can depress it. It's tough to get the old switch out without removing this cowling, but we managed to do so. We also managed to break the old switch in the process, but it wasn't working anyway. Just be careful that you don't break anything you actually need to keep. Since we did not remove the cowling, which would have also required removing the the main door where you replace the toner cartridges, it became apparent that the end pieces (new switch on one end and jumper style plug on the other) were too large to feed along the same path as the other wires that run to the circuit board in the back. Rather than try to feed the wires along the same route as all the other wires, which we did not have room to do with the cowling in place, we fed it through the small gap between the circuit board and the metal cover that protects that board from damage when the plastic printer cover is removed, and plugged it into the same spot the old switch was plugged into (see jumper info in Curt's post). If you take this route, however, you'll want to be careful and make sure the wires have plenty of clearance or you could cut or damage them.

If you want to skip the hassle of having to watch your print jobs, you may want to contact the company above and just replace the stupid switch.
by TLM on Sep 17, 2003 at 11:56am Add comment
I am on my 5th (and last) printer with this problem. When I spoke with a NEC tech, he advised me that the main processor board would have to be replaced. A service center wanted $150 to fix it. I have purchased several of these on e-bay for less than $20 ea, but they soon get the problem. I will try to jumper the switch to see if it fixes it.
by Mike on Sep 23, 2003 at 4:33pm Add comment
Well...an hour later and I fixed it. It seems that the white plastic lever is "supposed" to be attached to a very small metal contact wiper. I looked at two of these and both had the wiper separated from the white lever. All it took was a small dab of super glue and a lenghty reassembly. IT WORKED!!! I'll have to get to the other 2 later. This is a lot better than a $150 circuit board!

One would think that if sooo many people had this same problem, NEC would have done something about it 3-4 years ago.

Thanks all for your input!
by Mike on Sep 23, 2003 at 5:34pm Add comment