Welcome to the SeeMeCNC Community

excuse me , i am a new guy from Taiwan
this is first time assembling rostock max kit
RAMBo controlle require four yellow wires and four black wires in the power supply
to provide power to the the Onyx heated bed and the hot-end.
according to the assembly guide the four black wires on the left most should insert into
pin 1 in the black terminal block connector as pictures indicated, and the four yellow wires insert into
pin 2, then a single black wire for pin 3, then red wire for pin 4 respectively , is that correct? any reply would be appreciated

I think you may have an old or bad copy of the guide.
The latest guide can be downloaded here: http://www.geneb.org/rostock-max/Rostoc ... -Guide.pdf
I have enclosed a picture of what the connector should look like after wired properly.
Welcome to the Forum!

...and I've never used a red wire. Red wires out of PC power supplies are 5V.

g.

Eaglezsoar wrote:I think you may have an old or bad copy of the guide.
The latest guide can be downloaded here: http://www.geneb.org/rostock-max/Rostoc ... -Guide.pdf
I have enclosed a picture of what the connector should look like after wired properly.
Welcome to the Forum!

thanks for the reply
judged by the picture from you , i just need to replace the red wire in pin 4 and pin 6 with yellow wire
and it's done, is that right ?

That should be correct. There should be no red wires. Just follow the picture I sent.
Just out of curiosity, where did you get a guide that told you to use a red wire from
the power supply?

Eaglezsoar wrote:That should be correct. There should be no red wires. Just follow the picture I sent.
Just out of curiosity, where did you get a guide that told you to use a red wire from
the power supply?

actually,the guide has nothing wrong, it was completely my own idea tried to use red wire instead of yellow, by the way, what's wrong with red wire, why it can't be used ? please forgive my silly question

regkit wrote:
actually,the guide has nothing wrong, it was completely my own idea tried to use red wire instead of yellow, by the way, what's wrong with red wire, why it can't be used ? please forgive my silly question

The red wire is 5V and the yellow is 12V. You need 12V for each of the three supply inputs on the Rambo.

Broose wrote:

regkit wrote:
actually,the guide has nothing wrong, it was completely my own idea tried to use red wire instead of yellow, by the way, what's wrong with red wire, why it can't be used ? please forgive my silly question

The red wire is 5V and the yellow is 12V. You need 12V for each of the three supply inputs on the Rambo.

i see, but how do i know exactly how high the voltage a wire actually is ?

The voltage of each wire is dictated by the ATX standard. Each wire has it's own voltage or is dedicated to perform a function. If you Google "ATX wiring standard" you should be able to read about it.

foshon wrote:The voltage of each wire is dictated by the ATX standard. Each wire has it's own voltage or is dedicated to perform a function. If you Google "ATX wiring standard" you should be able to read about it.

thanks for answering my question patiently, i'll do a board search next time before posting question

The standards are what the voltage should be, but that tell you what it actually is. So for the actual voltage (and it's usually just a little over the standard) you'd just have to measure with a multimeter. The hard part is that you measure voltage between wires, so you need to have decided which wire you want to compair against ( typically ground or at least referred to as ground ).

this has a nice color coded table.

http://en.wikipedia.org/wiki/ATX#ATX_po ... _revisions

explains each color, useful if you wanted to wire up some extra stuff