Einleitung
This is a guide on how to replace the motherboard in a DYMO LabelWriter 450.
Was du brauchst
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Make sure the device is unplugged. Then, turn over the device so that the label is readable.
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Remove the two 15.7mm screws on the top of the device first, and then the two 26.5mm screws on the bottom (they are in the smaller holes and larger holes respectively) using a Phillips #1 screwdriver.
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You need a spudger to orient the bottom screws so that they can be removed.
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Once the Back Plate has been unscrewed, you will see the components from the top of the device plugged into the motherboard. You will only have 1-2 inches of clearance to unplug the components from the motherboard.
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There are four components to unplug: the power cable connector, the two small no-fuss ribbon cable connectors, and the large no-fuss ribbon cable connector. The order does not matter.
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Unscrew the three 9.8mm screws from the motherboard, then pull out the gray spacers that are between the screws and the motherboard.
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To reassemble your device, follow these instructions in reverse order.
To reassemble your device, follow these instructions in reverse order.
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Team
USF Tampa, Team S1-G4, Leahy Fall 2018 Mitglied von USF Tampa, Team S1-G4, Leahy Fall 2018
USFT-LEAHY-F18S1G4
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3 Kommentare
In our unit the step-down converter, make the incoming 24 Volt to 5 Volt, are in malfunction an kill other components.
On the mainboard, the Q3 has make a shorting on the incoming 24 V powerline. Not shure if the PWM Controller is still OK (IC with 8 pin’s).
The reason for the malfunction is the possible of a shorted capacitor.. Bad circuit for the power!
