Glory currency sorter UW500 is showing error 8966. Any solution?

check the link, but that error code is not showing.

https://www.google.com/search?q=Glory+WS-21+coin+counter+error+code+E5-416

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Glory UW-500/600 Currency Sorter (No longer available, please see UW-F) dead. it needs service. take it to a shop and get some.
cleaning out is first. money is nasty dirty stuff.

There are a lot of reviews out there indicating the Mag Nif coin sorter works poorly or breaks easily. I recommend returning it. See review at links below

https://www.officedepot.com/a/products/118195/MagNif-Motorized-Coin-Sorter-9-12/
https://www.officedepot.com/a/products/201502/Mag-Nif-Digital-Coin-Sorter/

Let me set the record straight. Brandt invented the 8672, one of the best machines of all time. Unfortunately it was way over priced. Brandt was in business for over 110 years and then sold out to the employees of the company who then sold out to the DeLaRue company in England. DeLaRue then sold out to Talaris. And, finally, Talaris sold out to Glory two years ago. However, the 8672 stopped production before Glory became the owner. All the above took place over 15 year period. Got all that!!
Now back to your question. What kind of manual do you need? I would need to know the full model and serial number for the correct manual.
If your counter say Brandt on it, that is very old. The newest version has the name Talaris on it. Spare parts can be had, but are very rare and somewhat expensive since the machine is no longer made. Here is a picture of a 8672. Good luck.....

Under user tools, system settings make all prints, copies to come out in internal tray, the front and rear covers have to come off to remove screw 1 each side the SC code is shift tray motor error

From what I have read, it seems that what matters the most is the speed of the counter. In this article I found, the fastest counter can count 1500 bills per minute:
http://www.abcoffice.com/office-equipment-news/tag/bill-counter-reviews/

F1 00 Content Sorter communication trouble Detail Communication line test error occurs when power is turned on or after the exit of a simulation mode. Improper communication with sorter Cause Improper connection or broken wire of connector or harness between copier and sorter Sorter control PWB defective Control PWB (PCU) defective Malfunction due to noise Check and remedy Clear by turning the power supply OFF/ON. Check communication line connector and harness. Replace sorter control PWB or PCU PWB. F1 02 Content Sorter transport motor error Detail Transport motor drive trouble Cause Motor lock Check and remedy Check transport motor operation with SIM3-3. F1 03 Content Sorter guide bar rocking motor trouble Detail Sorter guide bar rocking motor drive error Cause Motor lock Motor speed error Overcurrent to motor Sorter control PWB defective Check and remedy Check guide bar motor operation with SIM3-10. F1 04 Content Sorter indexer lower limit detected Detail Indexer has exceeded lower limit. Cause Sensor defective Sorter control PWB defective Check and remedy Check sensor with SIM3-2. F1 05 Content Sorter indexer upper limit detected Detail Indexer has exceeded upper limit Cause Sensor defective Sorter control PWB defective Check and remedy Check sensor with SIM3-2. F1 06 Content Sorter bin shift motor error Detail 1) Bin shift is not completed within 2.5 seconds after bin shift request Cause Motor lock Improper motor speed Overcurrent to motor Sorter control PWB defective Check and remedy Check bin shift motor operation with SIM3-4.

This 20 bin sorter uses an interlock switch and actuator to show that the sorter is properly attached to the machine. Pull the sorter away from the machine and look at the rear side of the copier that faces the sorter. There should be what looks like a spike mounted to the copier. That spike goes into a hole in the sorter which then actuals the switch. Make sure the spike is not broken or loose. Make sure the tray that the sorter sits on is not bent. Correct any issues with these 2 and you should be good to go.

CH - open cover in the paper feed area.OR - Sorter not installed properly
CH blinking - Dev unit is not properlyinstalled.

EE-EU - Low toner density in thedeveloper.

Check/ replace toner cart. Check/ reset Dev. unit. Check covers and doors to make sure all are closed properly. If you have sorter -- make sure sorter is seated properly.

Do you get a paper jam or is the finsher not showing that is empty? You may have a broken bin or a miss alined bin or you have a lazy sensor flag. The copier should give you a idea where the paper jam is... May need more info. on this one..