Question about Epson LQ 680 Matrix Printer

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Epson LQ 680 pro - not functional and all signal led blinking

When i turn on my dot matrix printer it won functional like usual and all led signal was blinking. It is got problem with the circuit board?

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  • Anonymous Oct 23, 2008

    When i switch on epson 680 printer all lights are blinking with beep sound.

    couldnt continue....

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  • 5 Answers

This may be problem with head cable or home position sensor.

Posted on Jul 01, 2009

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1 Answer

All LEDs are blinking and printer goes to pause mode?


TANVIR, UNPLUG PRINTER FOR 3-4 MINUTES THEN RE-PLUG SHOULD RESET,, IF NOT TOMORROW CALL EPSON CUSTOMER SUPPORT GET NUMBER IN MANUEL FOR PRINTER THANKS

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How can i fix my LQ 680 ?


Turn off the printer and leave it off for several
minutes; then turn on the printer again.

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1999 honda rebel 250 signal relay is bad the turn signals stay on and don't blink


Hi, Anonymous before testing any electrical component in the Light Circuit it is "IMPERATIVE" that you have a fully charged battery of 12.5 volts or more and be able to pass a proper "LOAD" test because your battery may have 12.5 volts or more but little or zero amps causing the battery to be faulty and must be replaced, especially "AGM" batteries, also before diagnosing any turn signal/running light/parking light issue make sure the bulb is good and the light fuse has continuity with a test light. If you have replaced your OEM lights with one or all LED lights you are going to need a load equalizer.
If no turn signals work the cause could be a faulty turn signal module or the connector going to it, look for corroded, loose, or broken pins/sockets. Contact spray cleaner is great for removing corrosion.
If all four turn signals flash at the same time like hazard lights even though you only pressed one turn signal button then you have a LED light in the circuit and need a load equalizer that can be purchased from any motorcycle parts supplier.
If your speedometer does not function properly it will have to be fixed first because your turn signal module gets the data from the speedometer for normal turn signal function.
If your front turn signals don't work use a test light to check for power and ground at the bulb socket, then start backtracking the wiring through every wire connector to the turn signal switch/button and check for continuity, go all the way back to the fuse if necessary to find the cause of the malfunction.
If your rear turn signals don't work check your rear fender wiring harness connector first for corroded, broken, loose pins/sockets, power, and a good ground, the harness connector is usually located under the seat on the front of the rear fender then keep tracing the wiring look for obvious harness damage caused by the rear tire.
If you still can't find the malfunction backtrack from the rear fender wiring harness connector.
If one side does not work you could have a faulty turn signal switch or module check for continuity.
For more information about your issue and valuable "FREE" downloads that you will need for viewing or printing please click on the blue links below. Good luck and have a wonderful day.
250 turn signals don blink
Honda Rebel 125 250 450 View topic Turn signal won blink
Honda rebel 250 Service Manual
http://www.partsfish.com/page/oem-parts-for-honda
http://www.rebelmotos.com/www_RebelMotos/2007_Honda_Rebel_CMX250C_OwnersManual%20.pdf

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carriage home sensor (near ribbon drive assy) may defective

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TV won't turn on. flashes a series of 5 red lights instead of turning green


Usually Sony and LG Blinking Codes are the same. Here is what I have.
  • Unit is dead, No blinks - Problem in the standby power section. Might check fuse,
  • Continuous blink once a second, no pausing - No reply from the jungle IC301 (data bus is busy, shorted to ground, or held high), IK video path is defective.
  • One blink - not used for the self-diagnosis
  • Two blinks - B+ over current protection (OCP), unit goes to the standby mode then displays the 2 blink fault. Could be a short in the power supply of any of the circuits.
  • Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit,
  • Four blinks - No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted.
  • Five blinks - AKB circuit (automatic kine bias), the timer/standby indicator blinks for about 30 seconds then goes to the self-diagnosis function. Something is wrong with the video. In addition, unit could be in IK blanking, try turning up screen slightly.
  • Six blinks - No Horizontal (H STOP), no raster, goes to the blinking self-diagnosis function immediately.
  • Seven blinks - High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
  • Eight blinks - Problem with the audio (AUDIO), unit goes to standby and blinks the self-diagnosis code.
  • Nine blinks - Panel Module Error or Thermal Error. If it is intermittent 9 blinks, meaning sometimes the TV comes on and other times you get flashing Make sure the regulator is -12 or -13 (negitive).
  • Ten blinks - Check Q8014 and Q8013 for shorts, leakage, or bad solder connections on the " D" board. If the transistors are bad, check R8051 and IC8005, also on the "D" board.

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2 Answers

Hi I have a DP100 and some of the pixels on the projection dont work - the clock is new this week but the supplier doesnt appear to have come across this before - any ideas?


I had same problem with projection on my DP200. Pixels began slowly disapear after year of functioning. I found source of the problem. Contact between LCD matrix (it stays next to red LED) and circuit board with controller is poor.It is easy to fix. 1) turn-off device2) remove front (where the lens) and back plastic element (both are on glue)3) disassemble projection unit
4) press down "cable" to the board by your nail, and move it over it to make sure that each path has contact.
5) repeat #4 for second end of cable (on lcd matrix)
6) repeat #4,5 for second cable and second circuit board
7) turn-on device, avoid looking to LED light, and check picture on matrix (flashlight can help to see picture on matrix).
8) assemble it back

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1 Answer

Today I cannot print to epson lq 680 and cannot detect printer


turn off the printer remove the cable into computer. turn on the printer again. maybe the cable it cause of the problem

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1 Answer

Paper out led blinking when press load/eject button


may be problem with detector cable or paper sensor.

Apr 20, 2009 | Epson LQ 680 Matrix Printer

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