ICD 4: Six Questions To Answer First

Which device are you working with?

Often an upgrade to a newer version of MPLAB® X IDE is required to support newer devices.

Are you using a Microchip demo board or one of your own design?

Have you followed the guidelines for resistors/capacitors for communications connections? See Operation.

Have you powered the target?

An external power supply must be connected to the target (preferred) or the debugger.

Are you using a Universal Serial Bus (USB) hub in your set up? Is it powered?

If you continue to have problems, try using the debugger without the hub (plugged directly into the computer).

Are you using the standard communication cable (RJ-11 type) shipped by Microchip with the debugger?

If you have made a longer cable, it could cause communications errors.

Are you using the original USB communication cable shipped by Microchip with the debugger?

Microchip ships a high quality shielded USB cable together with ICD4 to reduce 5V voltage drop and USB communication errors

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