Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Roger,

Sorry about the resistor. The 30K was used in a previous version thatused a reflective sensor - It should be about 5K. The higher resistorshould work (I think), but it will be more susceptible to noise. If yousend it back I will be happy to replace the resistor. If you prefer I canjust send you a new resistor and you can replace it yourself.

To see if it is the resistor,  turn the machine on and put avoltmeter from ground to the sensor's collector (the end of the resistorNOT connected to the 5 volt supply). With the carrier  blocking thesensor, it should read 5 volts. When the hole reaches the sensor itshould drop to near 0 volts, then go back up after the hole passesthrough. Do this by manually moving the carrier because it might be hardto see without a scope in real time.

Mark

At 12:07 AM 4/6/2015, you wrote:

Mark,
I have resolved one issue... Cleaning with Acetone didn't do good enoughof a job. After re-cleaning the carrier with mild detergent andscotchbrite, Drying with fresh clean cotton dish towel, I am not gettingthe paper jam indication upon the first pull, and am not getting residualtoner on the sheet. Poor conductivity at first, I think. However now,when I print from the PC, the carrier pulls in to about.75 past thetrigger hole, and stops with a jam. Is this likely due to the highresistance of the pullup resistor (30.1k) preventing the trigger fromworking?
Thanks,
Roger


On 4/5/2015 5:31 PM, Markmlerman@...[Homebrew_PCBs] wrote:

 

Roger,

This usually happens if the NPIS doesn't see the hole in the carrier. Didyou remember to drill one?

Mark

-----Original Message-----

From: "Roger BlairRoger.Blair@...[Homebrew_PCBs]"

Sent: Apr 5, 2015 10:33 AM

To:Homebrew_PCBs@yahoogroups.com

Subject: Re: [Homebrew_PCBs] Re: DLP MCU version troubleshooting,help needed

Hi Mark (& Marc), again...

I found a few overlooked corresponding emails from earlier in time,and with a little more information... I have just completed wiring theprinter as follows, and have a fault:

E260dn DLP Hookup