Hello,
I am building a player from two cannibalised units that I have acquired.
After replacing clearly faulty parts in one with ones from the other, the player works and plays well.
I was almost ready to turn to the repair of the main board of the 2nd player, but decided to check laser power of my new creation.
Sadly, it was 1.3mW whereas most lasers in players emit around 0.1mW. Some I have seen with 0.2mW or even slightly more (Sony CDP-302ES with BU-1 head) and have been working fine for 30+ years.
But nothing as huge as 13 x the power, and it cannot be good for the longevity of it CDM-9. So I decided to take the swing drawer apart to look for the adjustment pot. There was none.
Does any of your find people have Service Manual for it or at least circuit diagram?
Also, anyone out there with Naim CD-3 (NAC D-3) player and laser power meter who would be able to confirm the laser power of a standard, good working unit?
Cheers
Roman
I am building a player from two cannibalised units that I have acquired.
After replacing clearly faulty parts in one with ones from the other, the player works and plays well.
I was almost ready to turn to the repair of the main board of the 2nd player, but decided to check laser power of my new creation.
Sadly, it was 1.3mW whereas most lasers in players emit around 0.1mW. Some I have seen with 0.2mW or even slightly more (Sony CDP-302ES with BU-1 head) and have been working fine for 30+ years.
But nothing as huge as 13 x the power, and it cannot be good for the longevity of it CDM-9. So I decided to take the swing drawer apart to look for the adjustment pot. There was none.
Does any of your find people have Service Manual for it or at least circuit diagram?
Also, anyone out there with Naim CD-3 (NAC D-3) player and laser power meter who would be able to confirm the laser power of a standard, good working unit?
Cheers
Roman
The circuit off the µcontroller IC TDA8808T is just a NPN transistor
However, I have found a adjusting pot on a ribbon cable, cleverly hidden in a plastic mount.
However, I have found a adjusting pot on a ribbon cable, cleverly hidden in a plastic mount.