Thursday, 24 September 2015

Bosch IXO teardown

And then. Time to put Bosch IXO into pieces. Warranty ended so no worries. I had plan to modify the stupid yellow led to super bright white.

It's been used quite a lot and that can be seen from outside. Internally everything works fine.
To open the device you remove 4 pieces of TX9 screws. I removed also the rubber thing from the front. Seemed it's pointless and only has something to do to protect workpieces when you screw?

There is sticker next to trigger holding whole thing intact. Cut it in the middle. (This voids your warranty)
After that IXO opens nicely. No glue or tricks. Just little screwdriver. Inside there is familiar looking Li-Ion Cell. There is not much wasted space inside.

On the trigger side there is couple diodes and jumper lead. At the bottom side of the trigger there is bigger switch for the led and on top side there is microswitch for the motor. Motor switch seems to be generic switch from computer mouse.

Inside there is 3.7V 18650 cell from Samsung. These cells are widely available on EBAY for example or inside laptop batteries. If the battery of your IXO dies, it's easy to replace.

Motor markings. Following information was found from the internet:

3,6 VDC
5,5 A
12,8 W
RPM unloaded
11000 U/min
11,1 mNm
Type number
Size of the motor
43x29 mm
Size of the axle
7x2,3 mm 

All of the pieces of plastic enclousure can be removed. Gearbox is attached to motor and can be pulled off.

Didn't go forward taking gearbox apart. But from the back it can be seen there is planetary reduction gearset inside. Gear for motor is metal and rest of them seem to be metal. Seems to be strong enough and keeps costs down.

Axle is straight on one side. So gear is not heat fitted or glued on it. Makes it easier to replace motor if needed.

Button side of the PCB.
Reverse side of PCB. Mosfet on board is LR3802 . Other than that, there is not many components. Some SMD parts.

Replacing led turned out to be harder than i first thought. There is 2V voltage to the led over 68Ohm resistor. I'll propably get back to this when i get more intrest. For now we'll go with crappy yellow one.

In conclusion. Thing is easy to take apart, fix and put back together.

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