QSS-3501 Plus problem prints with strips

[davidlam]

Dear Sirs, we have 1 QSS-3501 Plus that every morning we will have prints come out with many strips (see attached), No error message. After power restart machine becomes normal / good for rest of the day. It happens  again next morning for several days already.  Please advise what could be problem coming from ? ? thank you very much 

see problem prints here      https://app.box.com/s/s1duy6l9cmbto9s3gdi2us7g6y80iwqq   

 

[Dave S]

Is this a 3501i Plus (ibeam model) ?

Edited June 20, 2017 by Dave S

[davidlam]

Dear Dave S  Sir,  it is a common "laser type" laser unit   and   NOT  iBeam model light source.  thank you !

[yustas]

I recommend to check the frequency of each laser in the morning while lab makes such prints.

Report here or to me.

[Dave S]

Go to

Maintenance: 2260 → Extension → Maintenance → Self-diagnostic → Image Path Check

See what the result is.

I would check the LVPECL cable from the Printer I/F Main PCB to Laser control PCB. J/P455 to J/P1513

Check all the cooling fans are operating.

At a guess it could be either the Printer I/F Main PCB or the Laser control PCB or possibly a noisy power supply.

[davidlam]

Reply to Yustas. . . . frequency is once every morning

[davidlam]

Reply to Dave S. . . thank you and we will try what you suggested.

just don't understand why it happens daily  .. once in the morning after QSS- power up 

[yustas]

6 hours ago, davidlam said:

Reply to Yustas. . . . frequency is once every morning

>>>  I  recommend to check the frequency of each laser in the morning while lab makes such prints.

>>>Report here or to me.

 

When I asked to check the frequency I meant to look at the number of rps... 1380 or...?
Not the time when it happens.

[davidlam]

replacing the printer I/F pcb solved the problem, thank you Sirs.