Poor quality sound on the cd changer input can occur after the headunit has changed from a second generation headunit to a third generation headunit or vise versa. The fix is simple and requires pins 2 and 3 to be swapped on the head unit connector.
Second generation headunits
Multi-pin connector 4, 12-pin, for CD changer control and CD audio input signals
Third generation headunits
Multi-pin connector 4, 12-pin, for CD changer control and CD audio input signals
1 – AUX signal input, left (yellow)
2 – AUX signal earth (green)
3 – CD changer, audio signal earth
4 – CD changer, voltage supply, positive, terminal 30, contact continuous load greater than 1 A, temporary peak load 5 A
5 – Not assigned
6 – CD changer, DATA OUT
7 – AUX signal input, right (grey)
8 – CD changer, left audio channel, CD/L
9 – CD changer, right audio channel, CD/R
10 – CD changer, control line, switched positive
11 – CD changer, DATA IN
12 – CD changer, CLOCK (internal check protocol for data flow monitoring)
Hi a bit off topic i know but after installing A RNS 510 everything works except the buttons dont illuminate?
does anyone have a fix for this
thanks in advance
[...] drain problem is exist on both firmware ?its woth it to upgrade ? I found some inforomation about pins 2 and 3 to be swapped on the head unit connector for the Poor quality sound on the cd changer input . Do i need to do any [...]