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Zeiss auto refractor keeps displaying motor/board/cable/chip failed. when machine is started

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If you are no good at chasing wires and signals or deciphering trouble codes, call your favorite local appliance repairman. Otherwise, google searching your model number along with another keyword such as:
you will find solutions

Posted on Dec 07, 2014


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Posted on Jan 02, 2017


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"Y motor failed to home" error message on auto refractor/keratometer model 599

This means that there is a sensor in the unit that cannot detect the Y axis stepping motor location at startup. This unit is very delicate and needs to be serviced and recalibrated. It wont be cheap to have done.

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Check for proper resistance across pins 3&4 at the motor plug (2 red wires). Should be 150 ohms.

If proper resistance, could check connections at board and board itself.

Though I wonder what the error would be if the motor wasn't turning and this looked like an error with the tach. Would this this be an EA error too?

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Where are the ports on a zeiss 599 refractor

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The printer is termic, if it does not print well, vlean witj an alcohol and brushteeth and try again

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My Vostro 1000 dell Laptop monitor keeps on having a blackscreen, It is on but I cannot see it on my screen

First connect to an external monitor, is there a picture?

If yes, Us the Fn keys to switch to the on board display. Have you got your display back.?

If no to both, your graphics chip/card has probably failed. If no to just the laptop display, then possibly the inverter has failed or the connection has been broken.

FIrst, Its easier to check the connections to *********** board, unclip the plate between the keyboard and screen, carefully. Then remove the keyboard retaining screws. Make sure all ribbon connections are good. If already good, then its down to checking at the screen end of the cables.

You should find some help here:-

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My Lamar L1400 treadmill stopped working. The display functions properly, but after it countdowns to start, the belt does not move; then the message "lose speed" scrolls across the display. I...

Hi, please open the cover where is motor and controller board motor, and see if there are some loose cable. And if NOT tight very well all connector, and wires with a plier.
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