MPC5501 lines when copying....not charge rollers or slip glass!

[Smee]

Anyone seen this?

Only happens intermittantly when COPYING in B&W or full colour - not scanning, not auto colour, and only on one side of the page.

The DF is the single pass unit, and it only occurs on the side that the machine's CIS reads. It never happens off the platen glass, only when copying thru the DF. And they are across the page - not leading edge to trailing edge direction.

When the page passes over the slip glass I can see the lamp flickering causing the lines so I replaced the lamp with no fix. Im also getting intermittant SC101's which relate to this problem. The lamp flickering is causing it but I dunno what is making the lamp flicker - its gotta be either the Lamp Stabilizer Board, the SIO or BICU boards but I cant see any connection - theres nothing logical about this fault but im guessing BICU....and its only a guess.

Any ideas?

[imaginemoko]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

D089 1842 - Stabilizer can we try test or check this one Sir...

[Smee]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Gonna do the stabilizor board and BICU tomorrow....seriously no-one has seen this?

[JustManuals]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

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[teebee1234]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

I'm a little confused. You said it occurs on the side that the CIS reads, which is the back side of a 2 sided original. The lamp flickering under the exposure glass would affect the front side. If it's the 2nd side with the lines then I would replace the CIS unit. If it's the front side and you already replace the lamp w\harness, then replace the stabilizer as suggested.

[Smee]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Sorry, the lines are on the top side - so the lamp inside the scanner, NOT the df, is flickering.

I replaced the stabilizer and BICU with no fix so next I guess its the SIO board - unless someone has seen this before?

[teebee1234]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

This is a strange one. One test you might want to try is to turn on the lamp in output check and see if stays steady (move it under the exposure strip first). If it allows it, then try and do an adf free run in output check with the lamp on and see if it flickers (not sure if the lamp will time out, you may have to be quick). If so then it may be an electrical problem with the adf causing it. It may be better to start the adf free run with paper in the tray and then turn on the exposure lamp.

[Oze]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Tried the IPU yet?
Had something similar on an MPC3002.

[BLADE]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Anyone seen this?

Only happens intermittantly when COPYING in B&W or full colour - not scanning, not auto colour, and only on one side of the page.

The DF is the single pass unit, and it only occurs on the side that the machine's CIS reads. It never happens off the platen glass, only when copying thru the DF.

Any ideas?

maybe the cis unit or df connections

[blackcat4866]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

If it's the exposure lamp that's flickering there are a few more possibilities:

1) Perhaps there's a cracked ribbon cable/harness ... whatever electrically connects light source 1 to the scanner main body. Meter out the wiring.
2) Is there an exposure lamp heater? Perhaps it's part of the lamp. Was it changed?
3) What sort of electrical connections on the lamp? Terminals with pins or connected wires? Pins are susceptible to arcing.
4) Environmental: does it get particularly cold in the machine environment? Xenon and fluorescent lamps don't like temperatures 50F and below.

I'll be curious what you discover. =^..^=

[BLADE]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Sorry, the lines are on the top side - so the lamp inside the scanner, NOT the df, is flickering.

oops didnt read this bit . hurry up n fix it so we know what it is

[Smee]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Lol thanks for the fixes and ideas, ive gotta wait till Monday to change the SIO board. The point to point shows this as the next board in the sequence and I really think its something telling the lamp to turn off and on - or flicker - as opposed to a short. Logically it has to be the SIO!

If not next im going to try the lens assy but I dont think this is related - but I saw it in another thread when I searched.

I will certainly let you know what the fix is!

[Counsel]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

Just my 2 cents you are probably headed the right direction ive never seen the issue, i only notice right off the bat the lines are inside the erase margin so its definitly seeing/not seeing something that is making the lines, i guess i would check wall voltage and make sure its normal and not a ton of stuff plugged see if any drops when running the machine or adf, if thats good, i would try the output like mentioned to make sure the lamp comes on and then maybe rattle the machine a bit and see if it flickers when disturbed thats all the comes to mind anyway but your probably on the right track.

[techsass]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

We had a very similar issue years ago when the 1060 first came out. It was caused by the width sensors in the DF.

[kannuki2]

Re: MPC5501 lines when copying....not charge rollers or slip glass!

I doubted sio board. It only supply power to the lamp. If the board messed up it will give you an error code. I would double check the scanner rail if it is in correct position. I would replace the ccd board and unplug one memory SIMM and run a copy. Sometimes a bad memory chip will cause the problem.