[CQ] 5053ci intermittent horizontal blanking

[yakyitz]

This machine is just out of warranty and I don’t want to just throw parts at it. It goes from one minute to the next full solid to blanking. I don’t believe it’s a charge issue as it doesn’t go solid to the edge it blanks. It’s got to be either transfer belt which was recently replaced as it somehow got all chewed up,or the HVPWB. I’ve attached full sample set of issue and the maintenance, event log and a good sample set.
Any ideas? Anyone?
HCScq.pdf HCSmntrprtGCQ.pdf
(reposted from printer forum)

[kyotechnz]

First impression I would look at transfer (roller and belt) as it appears to be happening across all colours.
Also it is easier to swap these parts.
Haven't seen this before on a this series, but the Transfer Belt and Roller is where I would start.
Also if I remember right there is a Bulletin about the Transfer Belt connector not making proper connection, you may want to look there.

[toddanderson]

Replace the 2nd transfer high voltage pwb

[yakyitz]

Replace the 2nd transfer high voltage pwb

in the manual there are 3. You obviously don’t mean the one mounted on the transfer belt. Of the other two, which one are you referring to.

Transfer connect PWB Relay circuit for feed image PWB and transfer PWB.

Transfer high-voltage PWB Generating the transfer bias, separation bias and transfer cleaning bias.

Transfer PWB Storing individual information on EEPROM. Relay board the belt cleaning motor/

belt thermistor and feed image PWB.

[tmaged]

302ND94640 I believe is the one he's talking about. Does your repetitive defects guide point to the secondary transfer roller diameter ?

[yakyitz]

302ND94640 I believe is the one he's talking about. Does your repetitive defects guide point to the secondary transfer roller diameter ?

take a look at the image I posted it’s not consistent

[tmaged]

Yeah you're right. Stopping it with the image on the belt should tell you if it's Primary or secondary.

[JR2ALTA]

I don't see transfer. I see developer bias or MC voltage issue. Both are controlled by the Main HV pwb

[JR2ALTA]

Any update on this?

[yakyitz]

I just today replaced the Transfer high-voltage PWB. But we’ll have to wait and see if it actually resolves the issue as it’s intermittent. It was working fine today when I got there, so time will tell. If I get a callback I’ll post an update.