Jam code j-7550 C8000

[sasa12u]

Hi all,
any idea for this jam code,from the services manual is locate jam at RU 508 .any idea to solve this problem.
Thanks

[Konicoz]

Re: Jam code j-7550 C8000

Extract from trouble shooting guide

J 7550.jpg
Temporary countermeasure: Paint edges of sensor light axishole by black marker and change the direction of the fan. (See attacheddocument)

Permanentcountermeasure: The clearance hole for sensor light axiswill be enlarged. Change the installation direction of the fan. Change therelay wirings.
Serial number cut in:
[RU-509]
A2A2W01000103
A2A2W11000497
A2A2WY1000709
[RU-508]
A1TTW01000056
A1TTW11000305
A1TTWY1000312
* Please apply temporary countermeasure ifJ-7550 occurs before applying the permanent countermeasure.

[sasa12u]

Re: Jam code j-7550 C8000

Hi konicoz,
i try this method before unfortunately,the jam code still appear.actually my customer use A3-80gms to print their jobs.any other solution.thanks

[blazebusiness]

Re: Jam code j-7550 C8000

Hi konicoz,
i try this method before unfortunately,the jam code still appear.actually my customer use A3-80gms to print their jobs.any other solution.thanks

From Tech bulletins: RU-508 /HM-1021. J-7551 or J-7552 occurs if the guide plate under the entrance is not fully locked2. Water leakage of HM-101/1023. J-7550 occurs due to misdetection of the entrance sensor. OR------------------------Description
J-7550. When a copy/print cycle is started, the paper will jam as it enters the external fuser unit.
Solution
CAUSE: Sensor PS13 (paper entrance to EF-101) is knocked out of place and may have shorted 5V DCto metal guide plate. ICP15 isOPEN on EFCB.
Note : There is no indication on themain body that could indicate any fault with the external fusing unit (EF-101). The jam codereferences the
RU-508Entrance sensor (PS1)not turning ON within a specified period of time.Usually when ICP15 is OPEN, C-5024 error code is indicated.
SOLUTION: Reposition PS13 and replace EFCB (p/n A1RJ H010 03).