Question about Epson UB S01 (C823361) Serial Adapter

1 Answer

No data getting through serial adapter

Believe the serial adapter (epson ub-s01) got a power surge and is damaged. interchanged one from another epson printer and have isolated that the card is the problem. have a local electronic board repairman but want to know if there is a typical part that gets zapped from surges to save time and money in repair. don't see any obvious damage. i have purchased a new one online but want to repair for a backup since this has happened several times with other printers we operate. thanks, doug mitchell

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that has over 10 points.


    An expert whose answer got voted for 2 times.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 11 Answers

We're an EPSON repair center and I can tell you that typically the UB-S01 is the culprit. For the low cost of the part it would be much more expensive and time consuming to fix it. We throw them in the trash can. If you want to avoid the damage from power on the card look at buying an APC PNET1. It protects CAT5 cables. Most EPSON UB-S01 adapaters are connected to a 25 pin to RJ45 adapter. The data is then sent through the CAT5 and converted back at the source end to RS232 DB9. If you place a PNET1 inline with the adapaters it should stop any future spikes on the card. Good luck.

Posted on Aug 11, 2006


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Unable to install Epson TM-U220B[U220 with UB-U02III usb interface] on Windows 7 AND XP!


Are you using a third party USB adapter or a USB interface? On the self test page that you printed does it say USB connection or something that will say about USB? or does it say parallel or serial connection? try to check the dip switches setting if its configured properly. visit site for more info.

Dec 24, 2011 | Epson TM-U220 Matrix Printer

1 Answer

Can the epson projector 8700ub be used in Australia with our power suppy being 230 volts? Thanks. Mr Tay

Rated frequency 50/60 Hz AC Power supply 100 to 120 VAC:
3.1 A (Home Cinema 8350) 3.3 A (Home Cinema 8700 UB) 200 to 240 VAC:
1.3 A (Home Cinema 8350) 1.5 A (Home Cinema 8700 UB) Power consumption 100 to 120 VAC: Operating: 272 W (Home Cinema 8350) 297 W (Home Cinema 8700 UB) Standby: 0.2 W 220 to 240 VAC:
download the manual for this model
thanks for rate me.

Jan 08, 2011 | Epson Power Supply 110/200 VAC Switchable...

2 Answers

Lightning storm seems to have hit earthing or power system of my house (totally knocked out the power in 2 neighbours houses) Computer died, but all other electrical components no problem - including the...

Yes, it's fixable, no , it's not worth it - it will cost you to fix it almost as a new pc. To recover your files just take the hard disk out and put it in a external enclosure  - around $25 - and plug it in in another pc.You will end up with an external disk, just wipe all Windows related stuff and use it as a backup.

Sep 10, 2010 | Acer Ferrari 5000 Notebook

1 Answer

Epson TM-U220PD printer network card problem - recognition

Did you change the dip switches? I believe that for the serial printer to work with ethernet, you need to have switches 2 and 4 on bank 2 set to on.

Jul 13, 2009 | Epson TM-U220 Matrix Printer

1 Answer

Power Surge on Hub Port

hi, Please reinstall the chipset drivers and "Turn off the error messages from Device Manager => USB Host Controller => Advanced Tab => check mark "Don't tell me about USB errors"

Jun 12, 2009 | Compaq NX6110 TFT XGA Notebook

1 Answer

Hook Up possible for EPSON Stylus 880 to new computer w/USB ?

There is no conversion cable that you can use with parallel connector since USB transfers data in Serial mode and the parallel cable handles data in Parallel mode.


Mar 01, 2009 | Epson Stylus Color 760 InkJet Printer

2 Answers

Inspiron 9100 - will not turn on after power surge

try unplugging it from the mains adapter and take the battery out. Leave the battery out for a full two minutes then replace the battery and try turning on with battery only first. If this boots up okay then add your adapter.

Nov 08, 2008 | Dell Inspiron 9100 Notebook

1 Answer


The Interface is interchangeable. Specify a SERIAL Interface when ordering the unit. for more info

Nov 03, 2008 | Epson TM-H6000III Thermal Printer

1 Answer

I search on internet about Epson (C823061) Serial Adapter

It’s going to be a tough find (EPSON discontinued the item).
See if your printer is listed and see if EPSON has something else that will work:

Digi-Key might be able to help:

Nov 11, 2007 | Epson Interface Type B (C823061) Serial...

Not finding what you are looking for?
Epson UB S01 (C823361) Serial Adapter Logo

Related Topics:

1,343 people viewed this question

Ask a Question

Usually answered in minutes!

Top Epson Computers & Internet Experts


Level 2 Expert

108 Answers


Level 3 Expert

102366 Answers

Les Dickinson
Les Dickinson

Level 3 Expert

18420 Answers

Are you an Epson Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides