Question about Canon CanoScan 8400F Flatbed Scanner

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The adapter between the power cord and the scanner does not work

There seems to be a break in the adapter and does not permit the flow of electricity to the scanner

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TMA doesn't work ;code 22


If 22 is blinking in the Scanner LCDThe Transparent Materials Adapter (TMA) may be attached incorrectly or is broken.
  1. Disconnect the scanner power cord.
  2. Disconnect the TMA cord from the scanner.
  3. Verify there are no bent or broken pins in the cord plug of the TMA. If the cord has bent or broken pins, it will be necessary to contact HP .
  4. Reconnect the TMA cord to the scanner.
  5. Perform a self-test on the TMA. Click here for instructions to do a self-test on the TMA (bps05670) .
  6. Check that the TMA is properly positioned on the scanner glass; either reposition the TMA in the positioning plate or reposition the positioning plate on the scanner glass.
  7. Reconnect the power cord to the scanner.
  8. Attempt to scan.
If 22 "The scanner could not scan" displays on the screen and the Transparent Materials Adapter (TMA) is being used
  1. Disconnect the scanner power cord.
  2. Disconnect the TMA cord from the scanner.
  3. Verify there are no bent or broken pins in the cord plug of the TMA. If the cord has bent or broken pins, it will be necessary to contact HP .
  4. Reconnect the TMA cord to the scanner.
  5. Reconnect the power cord to the scanner.
  6. Perform a self-test on the TMA. Click here for instructions to do a self-test on the TMA (bps05670) .
  7. Attempt to scan.
  8. If the scanner still does not function, follow the instructions for resolving USB initialization and related communication errors (bps03850) .
If 22 "The Scanner could not scan" displays on the screen and the TMA is not being used
  1. Disconnect both the scanner power cord and the USB cable.
  2. Perform a self-test on the scanner if it has a built in self-test. Click here for instructions on performing a scanner self-test (c00030441) .
  3. If the scanner passes the self-test, reconnect the USB cable and attempt to scan. If the scanner fails the self-test, it will be necessary to contact HP.
  4. If the scanner still does not function, follow the instructions for resolving USB initialization and related communication errors (bps03850) .

May 05, 2012 | HP 4570C Flatbed Scanner

Tip

Troubleshooting Laptop Power Failures - The AC Adapter


Symptom:

Wiggling the AC adapter cord causes the power status LED on the laptop to blink.


Diagnosis & Solution:

The problem could be that the copper wires inside the AC adapter cord became frayed or broken right where they enter the connector on the end of the AC adapter cord. The wires (a number of very thin conductors twisted into a heavier cable) are sized for the amount of power the laptop requires. As thin wires break and lose contact, all of the power must flow through the remaining conductors, leading to overheating, which can cause damage or be a safety hazard.

To make sure that this is the case, first test the output voltage from the connector on the end of the AC adapter cord using a digital multimeter set to measure DC voltage. While measuring, bend the AC adapter cord in various directions. If this causes the reading to jump betwwen zero & the nominal output voltage (written on the label on the AC adapter), then you know that you will need to replace the connector.

In order to get this fixed, you will need a new connector and basic soldering skills, or you can take it to an electronics shop for a cheap repair but get the price before agreeing. If you decide to repair it yourself, then you will have to find a replacement connector. Most of these connectors are easy to find and your local Radio Shack often has them in stock. Just bring your laptop along to make sure you get the right size. However, some laptops use a highly proprietary connector for which you can't easily find a replacement, in which case your best option is to find a failed AC adapter for your laptop model, cut the end off (with plenty of slack) and splice it onto your AC adapter's cable.

If you work on irregular surfaces (like a lap) and allow the cord to dangle, the wires may break just inside the connector due to pulling, despite the fact that the factory connector is encapsulated in molded plastic. You can carefully take apart the molded plastic with a razor knife to temporarily fix a connection, but it's smarter to replace the connector end as soon as you determine it is causing intermittent power failures.

Another possibility might be that the power receptacle in the laptop (where you plug the AC adapter cord) has failed. Sometimes the center pin of the connector breaks off, sometimes the solder joints on the main board fail, sometimes there's a break between the connector contacts and the motherboard contacts. In all these instances, you or the technician has to gain clear access to the laptop's motherboard to make the repair. In order to get this done, you might need clear disassembly instructions, as well as decent soldering skills. You could get a replacement connector usually for less than $10, but the repair charge can be several hundred dollars for some models if you take it to a local shop.

Please Vote for this Tip if you found it helpful.
M. Omran

on Oct 13, 2010 | Computers & Internet

1 Answer

I have 2 Epson V500 Scanners, 1 of them I just have on standby. The one I use daily does not turn on. I tried using the cables of the standby unit already. I checked the fuses on the plugs of both...


  1. Check that the power socket switch is on Make sure your scanner's power cord is securely connected to the scanner and a working electrical outlet.
  2. If your scanner is supplied with a power adapter, make sure your scanner's AC adapter is securely connected to the scanner and a working electrical outlet.
  3. Make sure that the power outlet works. (If necessary, test it by plugging in another electrical device and turning it on.)
  4. Check that the power switch is on at the mains socket. If this is on, carefully check the power cable to ensure it is not damaged and remove then reseat it before attempting to turn the scanner on again. If your scanner has a power button, make sure that the button is depressed so it is turned on. Also, make sure that your outlet works and is not controlled by a wall switch or timer.
  5. Power off the scanner at the mains socket. Unplug the power cable from the socket, then remove and reseat the power cable from the scanner's power cable port. Plug the scanner back in at the mains and ensure the socket is switched on.
  6. If your scanner has a power button, does the power button depress when pressed? Press down firmly on the power button, if it is stiff and does not depress then there may be a problem with the button.

  7. Connect the scanner directly to the mains - not via a surge protector or extension lead. If your unit is connected via a surge protector or a power strip/extension lead, connect the unit directly to the mains socket.
  8. Try another suitable power cable. Check that other electronic devices connected to same power socket have power and try another mains socket and another power cable if necessary. Failing this try another suitable and known-working power cable. Depending on your scanner, a standard "kettle lead" or "figure of eight" power cable is used. If there is power to the scanner (indicated by an illuminated Start light), when a different power cable is used, then the fault is with the original power cable.


If the unit does not power on after following the checks above, contact Epson for support. If your scanner uses an AC adapter, then this may need to be replaced. If your scanner is over 12 months old, you can purchase a replacement AC adapter directly from Epson.

Nov 13, 2010 | Epson Perfection V500 Flatbed Scanner

1 Answer

My little friend Raphi has this player. There is mostly no power to the player. The light will come on once in a while but it seems related to the AC adapter. What does the metallic collar the cord is...


Your little friend Raphi either needs a new power cord or the power input connection at the back of the player needs re-soldering to the board. Basically, there is a partial break in the electrical supply to the DVD player. If you waggle the cable around a little where it enters the back of the unit, the light will probably go on and off.

It needs a little bit of testing to determine exactly where the break is, but it shouldn't cost too much to fix. Any local TV repair shop or a friend with a bit of electronics knowledge should be able to fix it.

Nov 04, 2010 | Bush DVD2038 DVD Player

1 Answer

Adapter not electricity is not passing through adapter. Electricity flows through plug until the adapter is attached and then not connection to the printer....1240.... Part # 21T0615


Make sure you are plugging the power cord straight to the power outlet in the wall, bypass any surge device or power strip as it may cause power loss. If you have already tried this but still no difference, I suggest you contact Lexmark Technical Support to request for the power adapter. They can send you one for free. Thanks.

Jul 02, 2010 | Lexmark X1240 All-In-One InkJet Printer

2 Answers

Where do I get a new power cord for the HP 3970 which has been in storage for a while, but I want to begin using it agains, and can't locate the power cord. HP has discontinued this model and nothing on...


The correct part number for just the "brick style" power module (AC Adapter) for an HP Scanjet 3970 is L1970-80003. It is a specific 12V DC 2 Amp module. Today it can be purchased for $18.06 plus shipping from the HP Parts Store. However, if you are looking for just the power cord to your scanner's AC adapter, this brick style power module AC adapter does require a separate standard C13 detachable power cord to the specifications of your area, for instance, in the USA the power cord to connect the scanner to the power module AC adapter is part number 8120-6260, and it is a common power cord for monitors and computers. I learned all this because I had a scanner error message when I tried to use a different power module on the HP Scanjet 3970 when I lost the power cord to the original module. I hope this info helps somebody else, too.

May 24, 2010 | HP ScanJet 3970 Flatbed Scanner

1 Answer

My hp sacanjet 3970 doesn't work


Most likely cause of the "Scanner could not be initialized" error on the HP Scanjet 3970 is due to using an incorrect power adapter and cord -- the only power module and cord that work for the HP Scanjet 3970 are these part numbers: 8120-6260 for the power cord and L1970-80003 for the power module / AC adapter I hope this info helps you.

May 23, 2010 | HP ScanJet 3970 Flatbed Scanner

1 Answer

What specification is it for me to purchase


Your part should be Epson AC adapter A241B 15.2v 1.4A 30W. The power cord is a generic type cord common with printers and scanners, it should be easy to find if the power adapter doesn't come with one already. You may be able to find it cheaper somewhere online like Ebay.

Mar 05, 2010 | Epson PERFECTION 1670 AC Adapter 2084614...

1 Answer

I need to find a power adapter/cord for a umax 6400 scanner


go to ebay.com and look up your power cord you need
it should work
or go to a store and buy it

Dec 10, 2008 | Umax Astra 6400 Flatbed Scanner

1 Answer

New Power Cord Stopped Working


DO NOT use the HP power adapter that is 19V / 3.95A. That is too much power for the Scanjet, which is expecting 12V DC (and a much lower amperage). It's possible that hooking up this power adapter may further damage the electronics inside the scanner. If the second adapter has stopped working then it is possible that the internal circuit board has damage already and another adapter may not work. If you have access to a multimeter / voltmeter you could check for the 12V coming from the adapter. If you're getting the 12V, then the internal circuit board to the Scanjet is probably defective.

Nov 17, 2007 | HP Scanjet 4470c Flatbed Scanner

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