Question about Sharp AL-1642CS Copier

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Blinks H 4. The lights come on but the copier is silent as can be like it has not powered up.

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  • 79 Answers

This issue is most likely a faulty DC power supply board.

-David.

Posted on Nov 04, 2010

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Posted on Jan 02, 2017

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Those blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices.
https://homenol.blogspot.com/
https://electronicshelponline.blogspot.com/
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Copier won't run. it blinks the letter H and the number 4


H4 Trouble Description
The set temperature is not reached within 90 sec after turning on the power (the heater lamp lights up after 1 sec from turning on the power relay).

After reaching the specified temperature, abnormal temperature is detected.

Cause:
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Hi there you can try this

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Select function with RESUME press POWER to execute:
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All The Best Pineworks

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