Introduction
This guide is part of a reverse engineering project for EE 460. We were given a Cuisinart 4-Slice Tandem Toaster, and we broke it down into its most basic components.
Tools
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            This Cuisinart Toaster's technical highlights include: 
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            Tandem, 2-slot toaster 
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            1½" wide toasting slots 
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            Function control dial 
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            Bagel, Defrost and Reheat selections 
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            Blue LED shade control with large, easy-to-read numbers 
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            2 or 4 slice button; cancel button 
 
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            Pull the press handle down and away from the toaster to disconnect the body. 
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            Lift up the body of the toaster. 
 
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            This is the Circuit Board used for controlling each subsystem of the toaster. 
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            The integrated circuit marked 4541 contains an oscillator which oscillates at some hundreds or thousands of oscillations per second, the speed being determined by the browning setting. It also contains a binary counter which can count up to 65,536. 
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            The integrated circuit marked 4066 contains several logic gates which select the count value required for normal, defrost or reheat. 
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            During the count, the logic gates supply a small current to the transistor, causing it to energise the electromagnet. At the end of the selected count, the logic gates switch this current off and the transistor de-energises the electromagnet. 
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            While energised, the electromagnet holds the lever down. When the current is switched off the lever is released and the spring pops the toast up. 
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            Toasters of this age frequently use these "4000-series" integrated circuits as they can run off a wide range of supply voltages. Newer toasters use a microcontroller (essentially a simple micro computer) as this is more flexible in its functions and can also easily drive LEDs to show you what the toaster is doing. 
 
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            Main Element Assembly 
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            Crumb Tray with Power Cord 
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            Circuitry with Heating Component 
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            User Control Interface with Buttons 
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            Press Handle Spring 
 
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3 comments
Have this broken device and would be glad to us this demonstration to fix it!
Thanks for this great post-up. Saved me a lot of time not having to figure out the disassembly. Hope my comments will further help others trying to do the same.
Cheers!
Keith
K Lynch -
Muy detallado desmontaje felicitaciones
Is there a simple fix when the toast won’t stay down.? The handle just keeps popping up.
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