AR-168 Document feeder jam

[subaro]

Re: AR-168 Document feeder jam

Replacing both the power and high voltage pwb didn't help.

Ok, so you replaced the entire adf and same issue. my thoughts were you replaced all the parts on the adf hence my earlier reply. Anyway, looking at the schematic for this machine, the adf is connected to CN24 of the mcu[pg 169]. all the solenoid and sensors fro the adf can be checked from there. The 24v to the solenoid and the signal can be checked with a meter.
download the service manual and do service mode checks 02-02 and the rest there. all the info is there to come up with a solution. good hunting.

What are the error code ?

[harleyrider]

Re: AR-168 Document feeder jam

sometimes you can't just throw parts at it you may need to actually use a meter. It is a lost art.

[SwisSeV]

Re: AR-168 Document feeder jam

sometimes you can't just throw parts at it you may need to actually use a meter. It is a lost art.

Thanks for that, really helpful (sarcasm)

[SwisSeV]

Re: AR-168 Document feeder jam

After some more research I found the problem.
Faulty EEPROM didn't allow solenoid to be energized. That's why replacing the MCU PWB didn't work. Weird right? Who would of thought an EEPROM could cause a solenoid in the DF to go to sleep?

Thanks for the help

[subaro]

Re: AR-168 Document feeder jam

After some more research I found the problem.
Faulty EEPROM didn't allow solenoid to be energized. That's why replacing the MCU PWB didn't work. Weird right? Who would of thought an EEPROM could cause a solenoid in the DF to go to sleep?

Thanks for the help

Great that you solved this problem and headache gone. Just browsing through the service manual and saw that service mode 14:00 does a eeprom reset for non u codes. So what this is saying to me [ if i am correct ], is like the kyocera's, when the machine detects trouble after a couple of time it disables those features, so the machine can still function untill the problem is resolved or a reset is perfomed.
I usually don't do sharp so the sharp guys will have to confirm or dismiss my analysis here. so in fact the eeprom may well be good or it may in fact still be the cause.

[Operation]
1) Initial display
14-00 TRBL CANC.
CLEARED

[Function]
Used to cancel troubles other than U2.
∗ Cancel troubles such as H trouble which writes data into EEPROM, and perform hardware reset.

[SwisSeV]

Re: AR-168 Document feeder jam

This machine does not have that feature. The EEprom itself is corrupted. Performing the generic trouble clear is well enough, but no troubles were encountered, so there was no data to clear. Luckily sharp sells these particular roms for less than 5$

[subaro]

Re: AR-168 Document feeder jam

This machine does not have that feature. The EEprom itself is corrupted. Performing the generic trouble clear is well enough, but no troubles were encountered, so there was no data to clear. Luckily sharp sells these particular roms for less than 5$

Thanks for the reply. Weird, the service manual shows 16:00 to cancel u trouble and 14:00 to cancel other than u trouble. page. 88 of service manual.
I would not want to work on a machine that has a service manual that is misleading.


14 00 Cancel of trouble other than U2 (TRBL CANC.)
16 00 U2 trouble cancel (U2 TRBL CANC.)

MODEL
AR-168S
AR-168D

Manuals do have errors, and when they are found must be noted.

[dwarf]

Re: AR-168 Document feeder jam

strange stuff indeed...just wondering the nature of the corruption that would allow it to fire six or seven times in a row and then not fire... and then being able to get past that point with mere mechanical intervention with the solenoid...but just like in sports, a "W" is a "W", and then you move on...

[SwisSeV]

Re: AR-168 Document feeder jam

Thanks for the reply. Weird, the service manual shows 16:00 to cancel u trouble and 14:00 to cancel other than u trouble. page. 88 of service manual.
I would not want to work on a machine that has a service manual that is misleading.


14 00 Cancel of trouble other than U2 (TRBL CANC.)
16 00 U2 trouble cancel (U2 TRBL CANC.)

MODEL
AR-168S
AR-168D

Manuals do have errors, and when they are found must be noted.

You misunderstood what I was trying to say. The copier doesn't have the feature where it turns off trouble so that the machine can be used. sim 14 works to cancel trouble codes, but that doesn't really matter in this case because no codes were thrown or written to the rom.

I found an ancient manuscript from an old archive, you can't find this on sharps new site.

Document ID:	AR168S-13768
Model:	AR168S
Symptom:	jamming in SPF or ADF
Solution:	replace the EE-prom for MCU pwb Sec 26 Item 39 VHIEES02L400P IC chip (IC 3)
Cause:	EE-prom on MCU pwb failed and was not giving correct signal for document feeder to enable the paper feed solenoid to energize

[subaro]

Re: AR-168 Document feeder jam

You misunderstood what I was trying to say. The copier doesn't have the feature where it turns off trouble so that the machine can be used. sim 14 works to cancel trouble codes, but that doesn't really matter in this case because no codes were thrown or written to the rom.

I found an ancient manuscript from an old archive, you can't find this on sharps new site.

Document ID:	AR168S-13768
Model:	AR168S
Symptom:	jamming in SPF or ADF
Solution:	replace the EE-prom for MCU pwb Sec 26 Item 39 VHIEES02L400P IC chip (IC 3)
Cause:	EE-prom on MCU pwb failed and was not giving correct signal for document feeder to enable the paper feed solenoid to energize

Alright, so this clears it up anyway. clear as mud as my former boss would say. so then the machine does have the 14:00 service mode. this is what i was getting at anyway and not questioning the solution any. Thanks again for the info, this is how we progress.