Question about HP Scanjet 4370

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Scanned result is cockeyed

Sometimes, not always, the scanned result is cockeyed. The document or picture to be scanned is in perfect alignment with the edge the scanner glass. After scanning the result can be off the vertical by as much as 15 degrees. Is there a solution to this periodic problem?

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See it is bcoz of yuor scnner may be old or its reqiure servicing see if you are able to open it and apply any lubricant oil on the scanner head it will working fine.

Posted on Dec 18, 2007


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Black vertical lines come and go for scans to computer and copies

I suspect the Document Feeder is not aligned properly and light is leaking in. You will need to have a technician in to check the alignment of the scanner to see if it needs to be readjusted. random black lines on edges usually indicate light leaking into the scan area.

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I have a Fujitsu 4220c2 scanner and when scanning multiple documents it'll take one half half/quarter way through and get stuck. The pick roller and pad assembly have been replaced. What could be causing...

Thank you for contacting Fixya.
This error is detected when one of the followings occurs: (TWAIN Error-Paper jammed in the ADF - Code DS32002), Scanner panel error-U1
1) A document does not reach the TOP sensor while the scanner has transported the document about 250 mm to pick. (The scanner performs retry operation.) 2) The trailing edge of a document does not reach the TOP sensor after the scanner transports the document by the length (L) below. (The document may have slipped on the rollers) Check the followings: 1.Scan condition - Transported length (L) before jam 2.ADF fixed size - scanning Approximately 450 mm 3.Long paper scanning -1.2 times of the specified value
If the imprinter is installed, paper jam can occur in the following case. If the scanner starts scanning when the imprinter cable (EXT cable) is not connected to the scanner, it does not rotate the imprinter, since it recognizes the imprinter not installed, which results in paper jam in the imprinter section.
Remove the jammed document and close the ADF. When the error frequently occurs, refer to the followings:
1. Do the documents satisfy paper specification? Please read the operator guide for paper specification. 2. Have the documents been jogged? • Align the edge of documents for stable paper feeding. • Remove documents with crease or dog-ear. • Scanning different width of documents may cause skew and result in paper jam. 3. Is the Imprinter EXT cable correctly connected to the scanner? Check the cables. (only when the Imprinter is installed) 4. Clean rollers in ADF and Imprinter and see if the error is removed. (only when the Imprinter is installed) 5. Replace Pick roller and Pad ASY and see if the error is removed. Check the consumable counter from the TWAIN driver screen. When the counter exceeds the values shown, replace Pick roller or Pad ASY.
If the above do not help, then the issue could be caused by the followings:
6. Malfunction of TOP sensor. 7. Malfunction of Cover open sensor. 8. Faulty Scanner Control PCA.
If Imprinter is installed, then the issue could be caused by the followings:
1. Malfunction of Sensor OPB5 lever (only when the Imprinter is installed). 2. Malfunction of Motor LF if the imprinter roller does not rotate.(only when the Imprinter is installed). 3. Faulty Imprinter Control PCA. (only when the Imprinter is installed).
Hope the above information is helpful.Please revert if you have any doubt.

Aug 10, 2010 | Fujitsu ScanPartner fi-4120C2 Path-Through...

1 Answer

When I scanned through the ADF's why there is always a line results

On these machines, it is likely that the scanner (which carries the light) remains stationery and scanning occurs on the very left edge of the glass platten while the documents pass over the area. The glass over which the documents are being passed for scanning, may have a streak of dirt or commonly, liquid paper residue. In short, just clean the glass with alcohol and a lint free cloth (I use 100% cotton like T-shirt rags).

Feb 17, 2010 | Brother MFC 240C All-In-One InkJet Printer

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Black line through the middle of the document

The thick line is either because of dust sticking to the glass or a module problem. Try different brightness settings and scan white paper. If the thickness varies and also the sides of the black strip are jaggered (step like) then it is dust on Glass. use isopropyl alcohol to clean, dont use solvents. If the teickness is same for all levels of brightness and has a sharp edge always, it could be scan module problem.
S. Mohan

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When it was working correctly, did you see any lamp lighting-up the surface that is being scanned?
Now, do you see that lamp working as before?
If so, then getting an "all-black" scan means that the scanner is not detecting any "light" parts on the document being scanned.

Yes, it's time to take the printer to a recycling-station;
advertise the ink-cartridges and power-cord and power-adapter online, e.g., '' or a local "FreeCycle" mailing-list.

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My Visioneer 8650 flatbed scanner with auto document feed gives a message when I try to scan a document, telling me to move the switch on the bottom from the "locked" to "unlocked" position. The lock is...

Actually a very common problem. Try the following:
1. Power down then re-power up the scanner.
2. Try slightly moving scanner. Sometimes a small change works to fix.
3. Change one of your scan setting to flatbed scan (not adf). Do a test scan under this setting. This will usually kick start scanner unit to unlock.
4. Last resort, by does also work...give it a medium slap on the side, sometimes unjams the scanner light.
5. Super last resort, power down over night, it almost always works the next day. (could be that lock up is heat related to scan lamp, dont know but just a guess).
Excellent scanner, so worth the effort to try these fixes.

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Document Recognition


Here is an OCR software which you can download for free.

Please click on the link to access free OCR (scan to text) software.


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