MP 5500/Savin 8055 Tandem Tray Problems

[Vulkor]

History:
Customer says SC code (I forget which one) popping when Paper is moved from Left tray to Right tray.

Upon inspection the unit that pushes the paper from LEFT to RIGHT only makes it about halfway across the LEFT Tray and stops thus not pushing the paper all the way over.

Whats Been Done So Far:
Replaced Left and Right Tandem Trays with NEW ones. Replaced Left Tandem Rail.


What is Left?? Right Rail, some board?

[zyqwiz]

there are 2 gears on the end of the shaft and they can start spinning instead of turning the shaft. The two gears have different part numbers so make sure you order the correct one if it has failed

[mikadonovan]

Make sure the screws holding the rails on are tight. It seems the ones at the rear have a tendency to loosen up.

[Venom]

Sometimes just the "D" shaped hole is a little rounded and adding shims to it can correct it.

[imaginemoko]

have we check sir the Sensors at the tandem lct right assy? maybe one of them is misalign or broken, or one of timing wire pully is cut, or timing pulley at left tandem assy was broken.. the one who drive the paper to left assy...

[mikadonovan]

Hers another thing. Maybe theres a little bitty piece of paper stuck in the machine interface connector. I've seen that before.

[Vulkor]

Hers another thing. Maybe theres a little bitty piece of paper stuck in the machine interface connector. I've seen that before.

Yeah seen this before, usually causes an SC, but not always. Been checked, Thanks for suggestions.


As for everyone above, I've replaced BOTH TRAYS, with NEW ones from Savin. So why should any of the mentioned Fixes help? Sounds like they all refer to the trays? Am I right?

[imaginemoko]

does it mean Sir that after you have replaced the Tandem Assy's the problem still occur? SC 501 as per customer says poping up?

[Fearless V K]

Found this on the Global Knowledgebase, don't know if this is the code you are getting, and it sounds like the problem may be different, but it's worth a look...
(Also, for what it's worth, I've fixed 3 machines in the last week with problems that throwing parts at based on sc codes, troubleshooting, or hotline calls could not fix by performing an engine memory clear, just did it as a last resort each time. At least it's worth a shot before spending big $$$ on boards and such. You just have to re-enter the non-default values in SP mode.)

[Symptom]
Sometimes SC515 (Tandem rear fence motor error) is displayed.
The symptom was not reproducible on a visit.
The transport motor and all of the sensors were replaced, but the symptom reoccurs.

[Cause]
The back fence assembly on the right tray is faulty, so that there is no gap with the bottom of the tray. The resulting friction may prevent the right back fence from opening when the paper is transported.
There are scratches from the friction on the bottom of the right tray.

[Resolution]
Loosen one of the stabilizing screws of the back fence on the right tray, and re-affix while lifting up the back fence.
Reassemble the back fence so that there is a gap with the bottom of the right tray.

[zyqwiz]

why should any of the mentioned Fixes help?

Try giving us the actual SC code and maybe we can help. It sounds like the rail has come loose as previously mentioned if you have changed both halves of the tandem tray.

[Vulkor]

Found this on the Global Knowledgebase, don't know if this is the code you are getting, and it sounds like the problem may be different, but it's worth a look...
(Also, for what it's worth, I've fixed 3 machines in the last week with problems that throwing parts at based on sc codes, troubleshooting, or hotline calls could not fix by performing an engine memory clear, just did it as a last resort each time. At least it's worth a shot before spending big $$$ on boards and such. You just have to re-enter the non-default values in SP mode.)

[Symptom]
Sometimes SC515 (Tandem rear fence motor error) is displayed.
The symptom was not reproducible on a visit.
The transport motor and all of the sensors were replaced, but the symptom reoccurs.

[Cause]
The back fence assembly on the right tray is faulty, so that there is no gap with the bottom of the tray. The resulting friction may prevent the right back fence from opening when the paper is transported.
There are scratches from the friction on the bottom of the right tray.

[Resolution]
Loosen one of the stabilizing screws of the back fence on the right tray, and re-affix while lifting up the back fence.
Reassemble the back fence so that there is a gap with the bottom of the right tray.

I will try this! And then the Memory Clear. That is the SC I was getting. 515. Sorry I didn't know if immediately. I've not been out there in a while and we just had the customer using the Right Tandem only.

[tcs04]

Make sure the screws holding the rails on are tight. It seems the ones at the rear have a tendency to loosen up.

I agree with mikadonovan, it could be the rear screw holding the centre rail to the machine frame.

The left edge of the right tandem tray would drop which could cause either the plug not to connect or may foul the rear fence which can give symptoms similar to the bulletin quoted by Fearless.

[Vulkor]

Thanks for the help look forward to testing your expertise out as soon as we get time to address this non pressing problem. Will update with solution as soon as I know it.