HP 3600N error 13.20.00

[bluechip printers]

Hi
Please can anyone help with following problem, bullet points as follows.
Magnta dropped a lot of toner onto paper pickup ***'y.
***'y removed for cleaning.
Ingress of toner in sensors, rollers and every else in ***'y.
Cleaned out all components with brush and sprayed isoclean on one of very contaminated sensors.
Reassembled unit and replaced in machine.
Switched on, machine goes through power up check and in the first case pulled through a sheet of paper to transfer unit where it stopped, error 13.20.00 shows.
Removed paper, and startup cycle started again, this time no paper but error showed again.
Checked paper path and found a stickey sensor arm ( one with long metal cover under transfer unit when door closed).
Took out ***'y realigned unit checked all sensors in area.
Power up and the same thing happens, sometimes paper is picked up other times not but always same error.
The unit has been checked and re checked in and out of the machine.
Because the paper stops just before the fuser the sensor on fuser was checked but appears ok.
The only consistent thing is error 13.20.00.
Changed out magenter toner which was nearly finished as a last resourt but still error.
The sensor diagnostics result shows ABCDEFG when above mentioned sensor
1000110
was togled A switched 1 to 0 and back, but the others seemed constant.
Is this a rouge problem or have I messed up?
Have spent a lot of time on this and keep coming back to the same result and have now run out of idears.
I did get a config, etc, printout before I cleaned but not since!!
Help anyone!
Tony

[prntrfxr]

Your best method of troubleshooting is the manual sensor test as this is a generic paper jam error.

on your sensor tests:

0 = off
1 = on

A = TOP OF PAGE SENSOR
B = PAPER LOOP SENSOR
C = N/A
D = FUSER PAPER SENSOR
E = DELIVERY-TRAY PAPER-FULL SENSOR
F = FUSER PRESSURE-RELEASE SENSOR
G = MEDIA SENSOR
H = N/A
I = MP TRAY SENSOR
J = CASSETTE SENSOR
K = DOOR OPEN DETECTION SWITCH
L = DEVELOPING ESTRANGEMENT SENSOR - CLR
M = DEVELOPING ESTRANGEMENT SENSOR - BLK
N = MP TRAY MEDIA POSITION SENSOR


A-F are paper path sensors - you can toggle them and watch if they change from 0 to 1. If they do, the problem is not in that area.

G can have states from 0-7 each one representing a different type of paper - shouldn't have anything to do with jamming.

hope this helps. probably a tiny piece of paper or toner somewhere. could also be a torsion spring out of position on a flag.

[bluechip printers]

Hi
Thanks for that it clarifies the sensor and i guess they should all be at 0 when the machine is at rest, and 1 when the media is moving through its path.
I will recheck all to see if there are any problems. Thank you once again.
Regards
Tony

[bluechip printers]

Hi just an update on this problem which has now been finally resolved.
After a lot of cleaning and taking apart and putting back together again, I finally tied the problem down to the top of paper sensor (SR710) which was switching on and off at the wrong times, thus throwing up the paper jam message. The inconsistency was caused by contamination from the spilt toner that had deposited on the sensor. Once completely cleaned the machine worked.
Tony