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Diac to install printer scanner is scrathed badly when i opened it

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Most software discs packaged with printers and scanners are outdated by the time you by them from the store.New driver downloads can be found that are up to date by visiting that products website and downloading new drivers.Vista is good at automatically finding drivers when you plug into a usb port. Sometimes no disc is needed.

Posted on Nov 07, 2008

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Device powers on and goes through startup but no light. lamp is new. scanner moves but no light


Yep... I got one on the bench and also another I have just fixed. The one that is still sick has a lamp power supply that is inoperative. There are two supplies in this unit. One powers the electronics and the motors, the other the lamp. The lamp one is mounted bottom side under the lamp. I have partially traced out the circuit and I am trying to analyze it. It appears to have two transistors that drive the step down transformer that generates the 24 volts for the lamp. It appears they MAY use a Diac as a relaxation oscillator driving the bases of the large switching transistors. The circuit is fairly simple and has a small transformer for driving the bases as well as the larger output transformer. This supply operates directly off the line input so one needs to use an isolation transformer for personal safety when troubleshooting. I suspect the Diac might be gone in mine. The one I just fixed had been dropped and the plastic standoffs for BOTH power supplies were broken. The smaller supply on the one I repaired had the power transistors fracturing the circuit traces they were attached to so supply would not operate. Jumpering the breaks fixed the problem. Also on that one the audio sensitivity pot was smashed. Replaced that. I will be working on the one with the bad 24 volt lamp power supply again. In the meantime, see if on yours the ONLY problem MIGHT be the big power transistor leads have broken loose from the circuit board
The supply is mounted on three standoff plastic pins to the cover with the grill punching on the back side. Remove BOTH long side aluminum extrusions (8 screws +1 more) to free the long plate with the supply on it. Chauvet STUPIDLY have the heatsink aluminum dangling by the two power transistors so bumps flex the transistors... you will see it when you open it... You can contact me as fredy2 at the AOL.com.

Apr 27, 2011 | Chauvet Dmx-600 Intimidator 1.0 Color...

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My officeprinter is not scanning


the drivers for the scanner might have been corrupted
you might have to uninstall the printer/scanner restart your computer then reinstall the printer/scanner and its drivers
click start control panel administrive tools computer management device manager scroll to ports(COM&LPT) + to expand you should see a communication port and Ecp printer port you might see a yellow?question mark this will mean you need to install a new driver for this device right click you will have options to update driver,disable,uninstall or select properties again you will have the similiar options plus you can troubleshoot
click start all programs scroll to HP Officejet you should be able to see your scanner there click on open scanner driver the scanner should open make sure its turned on and that all leads attached 240 volt/USB have a secure seating and are not bad/faulty
hope this helps

Jan 24, 2011 | HP Officejet J3680 Multifunction Printer...

3 Answers

Sunbeam LC6200 won't turn off. Only runs at full speed unless the bowl lid is disengaged (the safety swtich still works). Have opened it up and the Pulse microswitch seems ok, as does the rotary speed/off...


OK this is the fix for the LC6200 that worked for me. Unscrew top cover (2 screws) then another screw holding internals to external case. Carefully remove safety switch lever (use long nose pliers from the top next to lever to squeeze plastic barb that holds the levers in to the plastic body). Remove all screws on the bottom. Open and undo the drive shaft pully nut clockwise. Pull out shaft and remove belt. Unscrew motor from chassis plate. From the bottom push out the plastic speed control dial with screwdriver. Remove motor and component boards. Check microswitches. Then remove diac DB3 and replace. Remove triac BT137 600v and replace. PS I used a 800v motorola MAC228 instead. Assemble in reverse. Good Luck.
denisprod

Feb 20, 2010 | Sunbeam Food Processors

1 Answer

I WANT TO USE THE SCANNER BUT, I DON'T NOW HOW, It go to the printer all the time, could you please help me ? I have the EPSOM STYLUS BX300F PROFESSIONAL, PRINTER,SCANNER,FAX,PHOTOCOPIER.


Basically, you can use the scanner in two ways. Please open the scanner cover and place the document or image you want to scan face down.

1. Press the SCAN button (color button = color scanning, black button = monochrome scanning). then your scanner will scan the document or image in the scanner tray.

2. Go to the scanner program installed in your computer when you installed the printer. Open it and then click the command button SCAN.

Note: Make sure that you installed the Scanner software when you installed the printer. Without the software, your scanner will not work. Please reinstall the printer including the scanner software.

Feb 06, 2010 | Epson Stylus Multifunction Inkjet Printer/...

1 Answer

Unable to print from pc, It is givinging me an error saying Output file name, print to file. Then it just does not want to print. I have tried different usb ports aswell as making sure that it is the...


Is print to file checked in print options?  Is the printer you installed selected as default printer in Start > Control Panel > Printers / Faxes.

If all else fails, uninstall everything and start from scrath....

Jul 14, 2009 | Canon Office Equipment & Supplies

2 Answers

Reinstalling ink


I put a new magenta cartridge in the printer. It says to open the scanner cover, then reinstall ink cartridge. when i open the scanner cover nothing happens and i dont know how to install the ink.

Oct 03, 2008 | Brother DCP 115C All-In-One InkJet Printer

1 Answer

Error message when scanning


hello...

uninstall the printer driver and install agn..

clean the glass scanner

scan with the scanner open and see if the lamp moving...is not then the printer failure and need repair..

generaly is bad drivers install..

excuse my bad english..

73 from victores in Cuba

Jan 04, 2008 | Lexmark X2470 All-In-One InkJet Printer

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