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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: amiman99 on December 17, 2011, 06:06:12 PM

Title: A1000 keyboard cable
Post by: amiman99 on December 17, 2011, 06:06:12 PM

Can anyone check A1000 keyboard cable for me? I need to know if the cable is straight through or rolled.
Using volt meter check if RJ12 connector is: pin 1-1, 2-2, 3-3, 4-4 or rolled pin 1-4, 2-3, 3-2, 4-1.
I'm trying to see if I could use headset cable or I need to modify one end. the headset cable is rolled by default.
Got one A1000 recently, trying to restore it.
Thank you

Title: Re: A1000 keyboard cable
Post by: JimS on December 17, 2011, 06:51:48 PM

I believe it's compatible with a telephone handset cable, but I don't have one handy to check.

Title: Re: A1000 keyboard cable
Post by: motrucker on December 17, 2011, 07:09:21 PM

Quote from: JimS;671734

I believe it's compatible with a telephone handset cable, but I don't have one handy to check.

It is, indeed, a standard old style telephone handset cable. Makes it easy and cheap to replace.

Title: Re: A1000 keyboard cable
Post by: amiman99 on December 17, 2011, 08:30:25 PM

The cable fits that I know, but the headset cable is "rolled", so I need to know for sure if it's straight or "rolled".
I got a dsl adapter I can hack for correct pin-out, because I don't have a rj12 splicer.
The pins 1 and 4 are GND and 5V, so I dont want to reverse the polarities and burn my keyboard.

Title: Re: A1000 keyboard cable
Post by: amiman99 on December 17, 2011, 09:56:06 PM

OK, I used the volt meter to find out myself.
The results:
GND on A1000 is on pin 4
GND on Keyboard is Pin 1
Required keyboard cable for A1000 is the rolled cable found in telephone head sets.
Got the cable for $2 in Goodwill, plugged in, works great.