Question about Panasonic Home Theater System System

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U99error Pleace i have a U99 error on system

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We recommend you remove all speaker cables and HDMI cables from the system. Then turn the system back on and see if the U99 message appears. If it does, then we recommend having the system evaluated by an authorized service center using the below link.

www.panasonic.com/repair Welcome to Panasonic Online Repair

Posted on Mar 26, 2014

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Posted on Jan 02, 2017

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DVD Recorder MODEL no.DMR-EZ27EB has U99 on screen unable to operate it


Hi.

U99 is a general communication failure between processor and timer, and there may be different causes. Common cause is a defective disk. Removing disk from the drive sometimes may fix the problem.

The first reset that you can attempt is disconnecting power for two minutes.

I quote below a post that was originally published in the MyCe forum (here):

"According to the service manual the U99 error is specifically a "hang up" displayed when there is a communication error that has occured between the main microprocessor and the timer microprocessor.

With more than twenty Panasonics (including four DMR-ES15 models) I'll offer my own observations:

There can be any number of causes for the U99 error, including a culmination of reading, writing, finalizing errors--sometimes appearing after U61 or U88 reading errors. The U99 error might also be associated with unusual DVD Drive noises, "grinding" indicating a dirty rubber hub and spindle; "clunking," "chugging" or "errrp" noises indicating a dirty lens or a failed laser assembly (the "optical pick-up").

Initial remedial measures include the routine DVD Drive lens, rubber hub and spindle area cleaning described in other CDFreaks/MyCE and AVS Forum threads. If that does not correct the problem(s) laser assembly or DVD Drive swapping with a direct replacement may be indicated. Also check for a disturbance to a ribbon cable or ribbon cable contact, correct or repair as necessary.

If the Digital PCB has become problematic, model-specific replacement is indicated. If the DVD Drive on-board contoller (if so equipped) has become problematic, model-specific replacement is indicated. In most cases "model-specific" means the same model year DVD Drive and, with problematic Digital PCBs or DVD Drive controller boards, replacements should be from the same model year and the same or very similar model recorder. Laser assemblies should only be replaced with the same model, i.e., 3331A and 3332A "optical pick-ups" might not interchange satisfactorily.

The U99 error may also be displayed when inferior media is in use. (Beginning in 2008 I've used nothing but Taiyo Yuden 8x Premium Line DVD-R media in my Panasonic, Philips and Magnavox DVD Recorders and HDD/DVD Recorders.)

The U99 error may also be displayed when there is an operating system "time out" occasioned when the user attempts to move too quickly between digital and analog channels (in 2007 and newer EZ series models)."

Apr 26, 2011 | Music

1 Answer

Getting an U99 error with a panasonic DMR-ez48v vhs/dvd combo unit. Any idea what this indicates


The U99 error is a "general communications problem". Were you trying to switch sources when you were recording? You shouldn't to avoid this error. That's what we did with my Uncles unit.

Mar 01, 2011 | Panasonic Televison & Video

1 Answer

My panasonic vhs/dvd recorder DMR-ES30V. DVD will not open and shows error code U99


Error indication u99

After development of the DVD drive and the frame lying under this the cause is nearby a horizontally placed circuit board one Elko 630 uF lid which ones probably lifted presumably is.

Jan 11, 2011 | Panasonic DMRES30V DVD Recorder/VCR Combo

1 Answer

I am getting a U99 error code. The only function


The "U99" error code signifies a "general communications failure."
It is not associated with one specific problem.
It can be related to the version of firmware your DVD recorder is currently using and it has been associated with the TV Guide on screen guide.

If your unit displays U99, turn the power off-unplug the
unit for 5 minutes, and reconnect the power.

If U99 reoccurs, please contact the Global Service Center Network for assistance.

Feb 26, 2010 | Panasonic DMR-EZ47V DVD Recorder/VCR

1 Answer

U99


A U99 error code signifies a general communications failure and is not associated with any specific problem. It could even be related to the firmware version of your DVD recorder.

Try turning off the power and unplugging off-unplug for at least five minutes before reconnecting.

If U99 reoccurs, you should contact the Global Service Center Network for assistance.

Good luck!

Jan 27, 2009 | Panasonic DMR-ES10 DVD Recorder

1 Answer

Errors F03 et error U99


After months of U99 errors, I was able to fix my unit by reinitializing the defaults while using a CD-R with a firmware fix downloaded from the internet. Power the unit down, press Skip/Rev + Time Slip + Open/Close for 5 seconds. The CDR should be in the disc drive as you do this.

Jun 14, 2008 | Panasonic Televison & Video

1 Answer

Start up u99 message


Hi there, this is what Panasonic say.... The "U99" error code signifies a "general communications failure."
It is not associated with one specific problem.
It can be related to the version of firmware your DVD recorder is currently using and it has been associated with the TV Guide on screen guide.

If your unit displays U99, turn the power off-unplug the
unit for 5 minutes, and reconnect the power.

If U99 reoccurs, please contact the Global Service Center Network for assistance.

Feb 17, 2008 | Panasonic DMR-E20 DVD Recorder

1 Answer

U99


Hi there, this is what Panasonic say.... The "U99" error code signifies a "general communications failure."
It is not associated with one specific problem.
It can be related to the version of firmware your DVD recorder is currently using and it has been associated with the TV Guide on screen guide.

If your unit displays U99, turn the power off-unplug the
unit for 5 minutes, and reconnect the power.

If U99 reoccurs, please contact the Global Service Center Network for assistance.

Feb 12, 2008 | Panasonic DMR-ES10 DVD Recorder

1 Answer

Panasonic SC-HT1500 System Problem


You have U99 error due to TV GUIDE. Follow manual instruction for new set up, use bogus ZIP 00000 instead of real one, and you will be fine.
You will not have TV Guide working, but you will be able to set up manual timer recording without problem. I used to have that problem since the first day I bought this unit at the end of 2005. Having something "free" is usually not for free.

Jan 08, 2008 | Panasonic SC-HT1500 System

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