Sorry about the resistor. The 30K was used in a previous version that used a reflective sensor - It should be about 5K. The higher resistor should work (I think), but it will be more susceptible to noise. If you send it back I will be happy to replace the resistor. If you prefer I can just send you a new resistor and you can replace it yourself.
To see if it is the resistor, turn the machine on and put a voltmeter from ground to the sensor's collector (the end of the resistor NOT connected to the 5 volt supply). With the carrier blocking the sensor, it should read 5 volts. When the hole reaches the sensor it should drop to near 0 volts, then go back up after the hole passes through. Do this by manually moving the carrier because it might be hard to 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 enough of a job. After re-cleaning the carrier with mild detergent and scotchbrite, Drying with fresh clean cotton dish towel, I am not getting the paper jam indication upon the first pull, and am not getting residual toner 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 the trigger hole, and stops with a jam. Is this likely due to the high resistance of the pullup resistor (30.1k) preventing the trigger from working?
Thanks,
Roger
On 4/5/2015 5:31 PM, Mark mlerman@...tcom.com [Homebrew_PCBs] wrote:
Â
Roger,
This usually happens if the NPIS doesn't see the hole in the carrier. Did you remember to drill one?
Mark
-----Original Message-----
From: "Roger Blair Roger.Blair@Comcast.net [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 the printer as follows, and have a fault:
E260dn DLP Hookup
Device
Function
Conn
Color
ATtiny13 MCU
Function
Operator Panel
3.3V
J5-5
BL
2
Pad no.âs = Pin no.âs
PB3
Cover Open
Switch Wires
5V
J7-1
YE
8
VCC
5V
J7-2
RD
GND
J7-3
BK
4
GND
Thermistor Substitute
5V
J12-1
BK
(J12-1>2.7k>J12-2)
(RD-VI-RD)
Fuser Temp
GND
J12-2
BK
New Paper In Sensor
(was narrow sensor)
0-5V
J14-1
RD
(Splice J14-1 wire to Sensor)
Â
5V
J14-2
WT
7
Pad no.âs = Pin no.âs
SCK
GND
J14-3
BK
4
GND
Â
Sensor
RD
(Splice Sensor wire to J14-1)
Â
Â
Sensor
BL
5
(4.99k to PAD 8 VCC)
MOSI
GND
Sensor
BK
4
Pad no.âs = Pin no.âs
GND
Manual Feed
Paper Sensor
5V (1.1V)
J23-1
BL
Open
Â
5V
J23-2
WT
6
MISO
GND
J23-3
BK
4
GND
Duplex Sensor
5V (1.1V)
J27-1
RD
Cut
Â
5V
J27-2
WT
Cut
Â
GND
J27-3
BK
Cut
Â
Exit Sensor
5V (>0V)
J27-4
BL
Open
Â
5V
J27-5
WT
3
PB4
GND
J27-6
BK
4
GNDOn power up with cartridge in place, the printer initializes OK. When I insert a carrier and press X, the carried is pulled in about half an inch or more (variable), stopping with a paper jamb indicated. Pressing continue a number of times eventually pulls the carrier clear of the drum, while still indicating a jamb. If I cycle the power switch with the carrier in position, upon initialization the carrier is automatically pulled through completely. There is a light dusting of toner on both sides of the carrier whenever it goes through the machine.. It appears that I have something amiss...
Being near the bottom of the electronics food chain, I could use some guidance.
Thanks,
Roger