Question about Visioneer OneTouch 7100 Flatbed Scanner
I get Locked scan head error When I try to scan. I figured out that the scanner looks for black, then white on the underside of the flatbed at the beginning of scan cycle not seeing this it assumes the head did not move and it therefore locked. Lamp works. Stepper motor drive system works. One touch software detects scanner as present. I found 4 expled 100 ufd 15 V caps on logic board and replaced them. No help. The circuit appears to be similar to a series 5 V regulator in my Radio Shack Power Supply Book. I think part marked TR3 is blown. TR3 screened onto logic board. Chip is 3 lead + heat sink tab transistor and has B A R U printed on it as part ID in 2 lines. I cannot figure out exactly which lead is which except that tab is collector. I tried replacing with both PNP and NPN transistors and neither help. Unit draws 470- 480 ma at 12 v from a lab quality DC supply.
Um just as a thought, but often there is a physical "head Lock" thats used when transporting the unit, are you sure this hasn't been activated? Just a thought.
Posted on Aug 09, 2007
Save hours of searching online or wasting money on unnecessary repairs by talking to a 6YA Expert who can help you resolve this 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.
Here's a link to this great service
Posted on Jan 02, 2017
Tips for a great answer:
Mar 05, 2011 | Canon CanoScan LiDE 25 Flatbed Scanner
Feb 17, 2010 | HP LaserJet 3330 All-In-One Printer
Nov 20, 2009 | HP OfficeJet 6110 All-In-One InkJet...
Jun 15, 2009 | Toshiba E-STUDIO 450 Copier
Apr 23, 2009 | Office Equipment & Supplies
Mar 09, 2009 | Kodak i 260 Path-Through Scanner
Feb 02, 2009 | Xerox WorkCentre M15i Laser Printer
Jan 10, 2008 | HP OfficeJet 7310 All-In-One InkJet...
Aug 12, 2011 | Visioneer OneTouch 7100 Flatbed Scanner
Apr 02, 2017 | Visioneer OneTouch 7100 Flatbed Scanner
165 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: