[Jamming] Ricoh PRO 8120s - J032 Sensor Dead.

[Lucas CÃcero]

Ricoh PRO 8120s - J032 Sensor Dead.

Hello everyone.
(I am starting my first topic. If by chance I am not being so clear in my posts, I will strive to improve with each new post).

The problem I have today is in a constant jam in the sensor J032 - PTB SENSOR. (Sensor located between the conveyor belts. Located between the PTR and the FUSING).

What precedes this problem.
Preventive maintenance was carried out on the transport set and the registration set. This maintenance was just cleaning. Nothing was changed.

When turning on the equipment, no errors or codes are reported on the screen. Until that moment, I was calm and started to print the works. But when the sheet reaches the PTB sensor, code J032 appears on the screen. At that moment the nightmare begins.
When I remove the paper and close the front doors, the J032 disappears from the screen and printing starts again, until the sheet stops in the same place and remains in this infinite cycle of jams.

TESTS:
Unfortunately I couldn't find the test for J032 in any SP. I soon decided to cause a deliberate jam, and to my surprise the sensor cannot read the paper standing there. My first thought was that the J032 sensor had burned out. I changed this sensor with the sensor of another PRO 8120s. And the result was the same.
The J032 follows with 12 wires for the CN276 LOCATED ON THE DRB BOARD.
I did a continuity test for the 12 wires. NO WIRE WAS BROKEN. I soon imagined that the plaque might have burned. But before changing the board, there are 3 other sensors that are together with the JO32 on the CN276. Of the 4 sensors only J032 is not working.
* Would it be possible for a single sensor (J032) inside the CN276 to have such a defect? At first I imagined that if there was anything burned on the board, the CN276 would leave all the sensors that are in this defective harness.

To answer the question about the board, I mounted the DRB on another machine. And that card on other equipment worked correctly.
(RESULT: THE ERROR IS NOT ON THE PLATE, NOT ON THE WHIP, NOT ON THE SENSOR J032) But it still seems to be "dead".

* Another test
I changed the complete set. (Set that needs two people to remove from the machine)
In this test I noticed that SENSOR J032 was dead on the other machine as well.
(This defect that may have been placed unintentionally during maintenance, is fixed in this SET)

I carried out a thorough check of an inverted whip, or something that could bring about this problem. I haven't identified anything so far.

NOTE: Only this J032 sensor is "dead".

I will be cheering for help.

Thank you very much.

[Phil B.]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

Olá a todos.
(Estou iniciando meu primeiro tópico. Se por acaso eu não estiver sendo tão claro nas minhas colocações, vou me esforçar para melhorar a cada nova postagem).

O problema que tenho hoje é um atolamento constante no sensor J032 - PTB SENSOR. (Sensor que fica entre as correias de transporte. Localizados entre o PTR e a FUSÃO).

Ações que antecederam esse problema.AÇÕES E TESTES:

how about you translate that for us that only speak ENGLISH

[Lucas CÃcero]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

how about you translate that for us that only speak ENGLISH

Thanks for the tip

[Phil B.]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

Thanks for the tip

And still didn't do it [emoji850][emoji1785]

Sent from my SM-G960U using Tapatalk

[slimslob]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

The PTB sensor should be a photo reflective sensor located in the bottom of the PTB assembly between the 2 belts just after the PTB entry roller. There is a single 3 lead connector at the front of the PTB assembly that goes to it. The input check table for this model links various sensors together but with no reference as to exactly what SP each sensor will be found on. Each one of the SP codes will be an 8 bit binary with each bit being a different sensor. Whether is it Paper Feed 1 to Paper Feed 10, your guess is as good as mine. I would look for the sensor being loose from its mount or on of the belts out of position.

[anothertech]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

If you place a sheet of paper over the sensor and then turn the power on, does the machine see the paper and report a jam? If it does, then I guess the sensor is working.

Another way would be to let it jam, then open and close the doors without removing the jam, does it see the paper still over the sensor?

[Lucas CÃcero]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

The PTB sensor should be a photo reflective sensor located in the bottom of the PTB assembly between the 2 belts just after the PTB entry roller. There is a single 3 lead connector at the front of the PTB assembly that goes to it. The input check table for this model links various sensors together but with no reference as to exactly what SP each sensor will be found on. Each one of the SP codes will be an 8 bit binary with each bit being a different sensor. Whether is it Paper Feed 1 to Paper Feed 10, your guess is as good as mine. I would look for the sensor being loose from its mount or on of the belts out of position.

Thank you very much for leaving your comment!The location of the PTB sensor is correct. It is exactly between the two straps.
Unfortunately I did not understand why the manual was not so clear about the BIT that identifies the PTB SENSOR.
There is an interesting point that I was able to verify today inside the BIT in SP mode.


In other equipment that is working correctly I have the following BITs:
* With the front door open:
SP 5803 153 = 0000 1111
* With the front door closed:
SP 5803 153 = 0000 1011


* When I purposely leave a paper in the PTB SENSOR and close the door.
SP 5803 153 = 000 1111 and J032 APPEARS ON THE SCREEN. (EVERYTHING NORMAL)
This is the way I believe to be the right one.






Now no equipment that features this PTB SENSOR DEAD.
* With the front door open:
SP 5803 153 = 0000 11 ”0” 1 (THERE IS A BIT THAT IS DIFFERENT)
* With the front door closed:
SP 5803 153 = 0000 10 ”0” 1 (THERE IS A BIT THAT IS DIFFERENT)


I wonder if this BIT “0” may be responsible for leaving PTB DEAD.






Another important detail:
I read it on the connector it has and wires. I have the following values: 5.12V and 5.08V (exactly the same values as the other equipment that is working)
The PTB sensor receives signal from the board, but it seems that it cannot send a signal back.
What could kill a sensor like that?


I confess that this real is more boring than I imagined bol.
Today I decided to put the whole set on the service bench and open everything. So I can check all the wires and connectors.
I will try to post some pictures.

[Lucas CÃcero]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

If you place a sheet of paper over the sensor and then turn the power on, does the machine see the paper and report a jam? If it does, then I guess the sensor is working.

Another way would be to let it jam, then open and close the doors without removing the jam, does it see the paper still over the sensor?

Your thought was one of my first tests that I did.When I place a sheet on the PTB SENSOR, nothing happens. The equipment makes its adjustments as if the sheet was not standing there. But a curious fact is that when I send a print, the sheet for PTB SENSOR and PAPER TIMMING SENSOR. And the J-032 appears on the screen. When I open the doors to remove the paper, the jam disappears from the screen and the machine sends the print again. And it stays in that endless jam cycle.


Interesting point:
PAPER TIMMING SENSOR comes first than PTB SENSOR, so I disconnected this sensor and put the machine to print. The sheet stops at the PAPER TIMMING SENSOR and the J-031 appears on the screen. (I TESTED THIS TEST TO CONFIRM IF THE SENSOR BEFORE THE PTB SENSOR WOULD MAKE A DIFFERENCE IF IT WAS NOT CONNECTED)
I can say that I see all the sensors that are in the CN276 working, except the PTB SENSOR that does not seem to carry a signal to the plate.
(Note: The PTB sensor when reading the multimeter receives: 5.12V and 5.08V.


DESCRIPTION:
CN276 = PTB SENSOR / PAPER TIMMING SENSOR / SHIFT UNIT HP SENSOR / REGISTRATION ROLLER HP SENSOR.


I left other comments for the SLIMSLOB user.
I think you will find it interesting too.

[slimslob]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

In other equipment that is working correctly I have the following BITs:
* With the front door open:
SP 5803 153 = 0000 1111
* With the front door closed:
SP 5803 153 = 0000 1011


* When I purposely leave a paper in the PTB SENSOR and close the door.
SP 5803 153 = 000 1111 and J032 APPEARS ON THE SCREEN. (EVERYTHING NORMAL)
This is the way I believe to be the right one.






Now on equipment that features this PTB SENSOR DEAD.00

From that information I would inclined to say yes. Now if Ricoh documented what each of those bits represented in terms of switches/sensors or possible some other component you would know exactly what to replace.

[Lucas CÃcero]

Re: Ricoh PRO 8120s - J032 Sensor Dead.

From that information I would inclined to say yes. Now if Ricoh documented what each of those bits represented in terms of switches/sensors or possible some other component you would know exactly what to replace.

Error resolved.


I managed to get the PTB sensor working again.


Note:
The values of the BITs that were diverging between two machines, made no difference.
I did the complete inversion with another set of other equipment, and the BITs have not changed.
So, I disassembled the entire record set that had a PTB sensor with a problem. I confirmed all connectors and wires. I used the multimeter to confirm continuity. I mapped carefully and retraced my steps in detail.


Conclusion:
In the initial maintenance, something was certainly pending.
*But I can say that there was no damaged inverted connector or wire.
*Connector with poor fit: It may have been the cause.
*Gear positioning.
(I will post a picture of the manual. The indication starts on page 475. This is for the manual I own)
In the manual you can follow step by step the right position of these gears. They work to synchronize the arrival of the paper in the register.


This combination of a possible misplaced connection with the wrong positioning of these two gears, I believe that left the PTB sensor with this problem.


If you have the PTB sensor reaching 5.12V and 5.08V. Make sure the DRB card is working. No "SC" code on the screen and many jams, it is worth confirming the placement of these two gears. If the error still persists, I believe that confirming all the harnesses and connectors in the registration set is the best way.


Detail: In the manual there is a page informing about what to do in excess of (J032 appers), but based on the history of my problem, I was able to evaluate that the tips on this page were not what I was looking for.